HostSession (Micro Focus Verastream Host Integrator v99.9.6798 Event Handlers API)

All Known Subinterfaces:

RemoteHostSession, ScriptHostSession
```
public interface HostSession
```
Provides information about a host session and allows for the manipulation of the terminal at various levels (direct, model, table).

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ANY_COLUMN` Specifies any column for those methods that allow it as a column value.
`static int`	`ANY_ROW` Specifies any row for those methods that allow it as a row value.
`static int`	`CURRENT_COLUMN` Specifies the current column for those methods that allow it as a column value.
`static int`	`CURRENT_ROW` Specifies the current row for those methods that allow it as a row value.
`static int`	`DESIGN_TOOL_AND_SERVER` `context` parameter for the `defaultValue(java.lang.String, java.lang.String, int)` method which specifies a value to be used only when using both the Design Tool and Server.
`static int`	`DESIGN_TOOL_ONLY` `context` parameter for the `defaultValue(java.lang.String, java.lang.String, int)` method which specifies a value to be used only when using the Design Tool.
`static int`	`DONT_WAIT_FOR_ECHO` `echoType` which means not to wait for the data written to the terminal to be echoed.
`static int`	`LINEAR_REGION` `regionType` parameter for the `waitForUpdate(int, int, int, int, int, boolean, int)` method which specifies a linear region.
`static int`	`RECTANGULAR_REGION` `regionType` parameter for the `waitForUpdate(int, int, int, int, int, boolean, int)` method which specifies a rectangular region.
`static int`	`SCROLL_END` `movement` parameter for the `moveCurrentRecordIndex(int)` method which specifies to execute the recordset's End operation.
`static int`	`SCROLL_HOME` `movement` parameter for the `moveCurrentRecordIndex(int)` method which specifies to execute the recordset's Home operation.
`static int`	`SCROLL_LINE_DOWN` `movement` parameter for the `moveCurrentRecordIndex(int)` method which specifies to execute the recordset's Line Down operation.
`static int`	`SCROLL_LINE_UP` `movement` parameter for the `moveCurrentRecordIndex(int)` method which specifies to execute the recordset's Line Up operation.
`static int`	`SCROLL_PAGE_DOWN` `movement` parameter for the `moveCurrentRecordIndex(int)` method which specifies to execute the recordset's Page Up operation.
`static int`	`SCROLL_PAGE_UP` `movement` parameter for the `moveCurrentRecordIndex(int)` method which specifies to execute the recordset's Page Down operation.
`static int`	`SYNC_TO_HOST` `index` parameter for the `setCurrentRecordIndex(int)` method which specifies to set the current index to the current host record.
`static int`	`WAIT_FOR_CURSOR_AUTOTAB` `echoType` which means to wait until the cursor reaches the next tabstop.
`static int`	`WAIT_FOR_CURSOR_MOVE` `echoType` which means to wait after writing only until the cursor moves.
`static int`	`WAIT_FOR_ECHO_BEHIND_CURSOR` `echoType` which means to wait until the data written appears behind the cursor.
`static int`	`WAIT_FOR_ECHO_SAME_NUMBER` `echoType` which means to wait for the same number of characters which were written are echoed.
`static int`	`WAIT_FOR_ECHO_TAB_OR_BEHIND_CURSOR` `echoType` which means to wait for the same data to be echoed or for the cursor to appear at the next tabstop.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`checkOperationConditions()` Verifies that operation conditions, as defined in the model, are satisfied.
`void`	`defaultValue(java.lang.String attribute, java.lang.String value, int context)` Transmits a value to an attribute when unmodified.
`void`	`executeCommandList(CommandList list)` Executes the specified command list.
`void`	`executeOperation(java.lang.String operation)` Performs an operation on the current entity.
`ProcedureRecordSet`	`executeSQLStatement(java.lang.String sqlStatement)` Executes an SQL statement on a table defined in the model.
`ProcedureRecordSet`	`executeTableProcedure(java.lang.String tableName, java.lang.String procedureName, java.util.Map dataInputValues, java.util.Map filterValues, boolean filterIsCaseSensitive, java.util.List outputColumnNames, int maxRows)` Performs a procedure on a table defined in the model.
`ModelRecordSet`	`fetchRecords(int maxRows, java.util.List fields, java.lang.String filterExpression)` Fetches up to the maximum number of rows specified from the current recordset starting with the next record.
`java.lang.String`	`getAttribute(java.lang.String attribute)` Reads the specified attribute on the current entity and returns the value.
`java.lang.String`	`getAttributeAtCursor()` Gets the name of the attribute at the current cursor position.
`AttributeMetaData`	`getAttributeMetaData(java.lang.String entity, java.lang.String attribute)` Gets the metadata for the specified attribute.
`TerminalRegion`	`getAttributeRegion(java.lang.String attribute)` Gets the location and contents of the specified attribute.
`java.util.Map`	`getAttributeRegions(java.util.List attributes)` Gets the location and contents of the specified attributes.
`java.util.Map`	`getAttributes()` Reads all the attributes on the current entity and returns their values.
`java.util.Map`	`getAttributes(java.util.List attributes)` Reads the specified attributes on the current entity and returns their values.
`ColumnMetaData`	`getColumnMetaData(java.lang.String table, java.lang.String column)` Gets the metadata for the specified column in a table.
`java.lang.String`	`getCurrentEntity()` Gets the current entity (screen) of the legacy application.
`ModelRecord`	`getCurrentRecord()` Fetches the current record in the current recordset.
`int`	`getCurrentRecordIndex()` Gets the index of the current record in the current recordset.
`java.lang.String`	`getCurrentRecordSet()` Gets the name of the current recordset.
`CursorPosition`	`getCursorPosition()` Gets the current position of the cursor on the terminal screen.
`java.util.List`	`getEntityAttributes(java.lang.String entity)` Gets the names of all attributes on the specified entity.
`java.lang.String`	`getEntityDescription(java.lang.String entity)` Gets the description for an entity.
`java.util.List`	`getEntityOperations(java.lang.String entity)` Gets the names of all operations on the specified entity.
`java.util.List`	`getEntityRecordSets(java.lang.String entity)` Gets the names of all recordsets on the specified entity.
`FieldMetaData`	`getFieldMetaData(java.lang.String entity, java.lang.String recordset, java.lang.String field)` Gets the metadata for the specified recordset field.
`TerminalRegion`	`getFieldRegion(java.lang.String field)` Gets the location and contents of the specified field in the current record of the current recordset.
`java.util.Map`	`getFieldRegions(java.util.List fields)` Gets the location and contents of the specified fields in the current record of the current recordset.
`java.lang.String`	`getHomeEntity()` Gets the name of the home entity for the model.
`LinearTerminalRegion`	`getLinearTerminalRegion(int offset, int length)` Gets the contents of a linear region of the terminal screen.
`java.util.List`	`getModelEntities()` Gets the names of all entities in the model.
`java.lang.String`	`getModelVariable(java.lang.String variable)` Gets the value of a model variable.
`java.util.List`	`getModelVariableNames()` Gets the names of all variables in the model.
`java.util.Map`	`getModelVariables()` Gets the values of all model variables.
`OperationMetaData`	`getOperationMetaData(java.lang.String entity, java.lang.String operation)` Gets the metadata for the specified operation.
`TerminalRegion`	`getPatternRegion(java.lang.String pattern)` Gets the location and contents of the specified pattern.
`java.util.Map`	`getPatternRegions(java.util.List patterns)` Gets the location and contents of the specified patterns.
`ProcedureMetaData`	`getProcedureMetaData(java.lang.String table, java.lang.String procedure)` Gets the metadata for the specified procedure in a table.
`TerminalRegion`	`getRecordRegion(java.lang.String recordset)` Gets the location and contents of the current record in the specified recordset.
`RecordSetMetaData`	`getRecordSetMetaData(java.lang.String entity, java.lang.String recordset)` Gets the metadata for the specified recordset.
`TerminalRegion`	`getRecordSetRegion(java.lang.String recordset)` Gets the location and contents of the specified recordset.
`RectangularTerminalRegion`	`getRectangularTerminalRegion(int topRow, int leftColumn, int numRows, int numColumns)` Gets the contents of a rectangular region of the terminal screen.
`java.lang.String`	`getStringAtCursor(int length)` Gets a string from a linear region of the terminal screen starting at the current cursor position.
`java.lang.String`	`getStringAtLocation(int topRow, int leftColumn, int numRows, int numColumns)` Gets a string from a rectangular region of the terminal screen starting at the given row and column.
`java.lang.String`	`getStringAtOffset(int offset, int length)` Gets a string from a linear region of the terminal screen starting at the given offset.
`java.util.List`	`getTableColumns(java.lang.String table)` Gets the names of all columns in the specified table.
`java.lang.String`	`getTableDescription(java.lang.String table)` Gets the description for a table.
`java.util.List`	`getTableNames()` Gets the names of all tables in the model.
`java.util.List`	`getTableProcedures(java.lang.String table)` Gets the names of all procedures in the specified table.
`RectangularTerminalRegion`	`getTerminalScreen()` Gets the size and contents of the terminal screen.
`ScreenSize`	`getTerminalScreenSize()` Gets the size of the terminal screen without the contents.
`VariableMetaData`	`getVariableMetaData(java.lang.String variable)` Gets the metadata for the specified variable.
`void`	`insertRecord(java.util.Map record)` Inserts a record into the current recordset.
`void`	`insertRecords(java.util.List records)` Inserts multiple records into the current recordset.
`void`	`moveCurrentRecordIndex(int movement)` Moves the current record index to a new position in the current recordset.
`void`	`moveCursor(int row, int column)` Sets the position of the cursor using row-column coordinates.
`void`	`navigate(java.lang.String entity)` Equivalent to calling the `setCurrentEntity(java.lang.String)` method.
`ModelRecord`	`nextRecord(java.lang.String filterExpression)` Finds and return a record in the current recordset using a filter expression starting with the record following the current record.
`void`	`readFromMappedAttribute(java.lang.String attribute)` Reads an attribute on the current entity and stores its value into the variable mapped to that attribute.
`void`	`readVariableFromAttribute(java.lang.String attribute, java.lang.String variable)` Reads an attribute on the current entity and stores its contents in a variable.
`void`	`readVariableFromField(java.lang.String recordset, java.lang.String field, java.lang.String variable)` Reads a field from the current record and stores its contents in a variable.
`void`	`readVariableFromLocation(java.lang.String variable, int row, int column, int length)` Reads data directly from the terminal and stores it in a variable.
`void`	`readVariableFromTerminal(java.lang.String variable, int length)` Reads terminal data at the current cursor position and stores it in a variable.
`void`	`resetRecordSet(java.lang.String recordset)` Resets the state of a recordset on the current entity.
`void`	`selectCurrentRecord()` Performs the model-defined selection operation for the current recordset.
`boolean`	`selectRecordByFilter(java.lang.String filterExpression)` Finds a record in the current recordset using a filter expression and performs the model-defined selection operation.
`boolean`	`selectRecordByIndex(int index)` Sets the current record in the current recordset by index and then performs the model-defined selection operation.
`void`	`setAttribute(java.lang.String attribute, java.lang.String value)` Writes a value to the specified attribute on the current entity.
`void`	`setAttributeDelayed(java.lang.String entity, java.lang.String attribute, java.lang.String value)` Queues a value to be written to the specified attribute on the specified entity.
`void`	`setAttributes(java.util.Map attributes)` Writes values to the specified attributes on the current entity.
`void`	`setAttributesDelayed(java.lang.String entity, java.util.Map attributes)` Queues values to be written to the specified attributes on the specified entity.
`void`	`setCurrentEntity(java.lang.String entity)` Sets the current entity.
`boolean`	`setCurrentRecordIndex(int index)` Sets the current record in the current recordset by index.
`void`	`setCurrentRecordSet(java.lang.String recordset)` Sets the current recordset by name.
`void`	`setModelVariable(java.lang.String variable, java.lang.String value)` Sets the value of a variable.
`void`	`setModelVariables(java.util.Map variables)` Sets the values of one or more variables.
`void`	`shiftCursor(int vertical, int horizontal)` Moves the cursor relative to its current position.
`void`	`transmit(java.lang.String string)` Writes a string to the terminal at the current cursor position using `DONT_WAIT_FOR_ECHO`.
`void`	`transmit(java.lang.String string, int echoType)` Writes a string to the terminal at the current cursor position.
`void`	`transmitTerminalKey(int key)` Sends a non-alphanumeric terminal key (for example, a Program Function key or a 3270 AID key) to the host.
`void`	`transmitToAttribute(java.lang.String attribute, java.lang.String value)` Writes a string to an attribute on the current entity.
`void`	`transmitToField(java.lang.String recordset, java.lang.String field, java.lang.String value)` Writes a string to a field in the current record in the current recordset.
`void`	`transmitToLocation(java.lang.String string, int row, int column)` Transmits a string to the terminal at the specified screen location using `DONT_WAIT_FOR_ECHO`.
`void`	`transmitToLocation(java.lang.String string, int row, int column, int echoType)` Transmits a string to the terminal at the specified screen location.
`void`	`transmitToOffset(java.lang.String string, int offset)` Transmits a string to the terminal at the specified offset using `DONT_WAIT_FOR_ECHO`.
`void`	`transmitToOffset(java.lang.String string, int offset, int echoType)` Transmits a string to the terminal at the specified offset.
`void`	`updateAttribute(java.lang.String attribute)` Writes the current entity's cached attribute data for the specified attribute.
`void`	`updateAttributes()` Writes the current entity's cached attribute data for all attributes.
`void`	`updateAttributes(java.util.Collection attributes)` Writes the current entity's cached attribute data for the specified attributes.
`void`	`updateCurrentRecord(java.util.Map record)` Updates the field values of the current record in the current recordset.
`boolean`	`updateRecordByFilter(java.util.Map record, java.lang.String filterExpression)` Finds a record in the current recordset using a filter expression and updates its field values.
`boolean`	`updateRecordByIndex(java.util.Map record, int index)` Updates the field values of the record at the specified index.
`int`	`updateRecords(java.util.Map record, java.lang.String filterExpression)` Finds records in the current recordset using a filter expression and update their field values.
`void`	`updateRecordSetField(java.lang.String recordset, java.lang.String field)` Writes the cached field data for the specified field in the recordset.
`void`	`updateRecordSetFields(java.lang.String recordset)` Writes the cached field data for all fields in the recordset.
`void`	`updateRecordSetFields(java.lang.String recordset, java.util.Collection fields)` Writes the cached field data for the specified fields in the recordset.
`void`	`wait(int duration)` Waits for the specified number of seconds.
`void`	`waitForCommString(java.lang.String string, int timeout)` Waits until the given string is received from the host.
`void`	`waitForCommString(java.lang.String string, int timeout, int count)` Waits until the given string is received from the host a specific number of times.
`void`	`waitForCondition(java.lang.String entity, java.lang.String condition, int timeout)` Waits for an expression to become true for the specified entity.
`void`	`waitForCursorAtAttribute(java.lang.String entity, java.lang.String attribute, int timeout)` Waits until the cursor is positioned within an attribute.
`void`	`waitForCursorAtLocation(int row, int column, int timeout)` Waits until the cursor is at the specified location.
`void`	`waitForCursorAtRecordSetField(java.lang.String entity, java.lang.String recordset, java.lang.String field, int timeout)` Waits until the cursor is positioned within a recordset field.
`void`	`waitForCursorAtTerminalField(int row, int column, int timeout)` Waits until the cursor is within the terminal field at the specified location.
`void`	`waitForCursorNotAtLocation(int row, int column, int timeout)` Waits until the cursor is not at the specified location.
`void`	`waitForCursorNotAtTerminalField(int row, int column, int timeout)` Waits until the cursor is not within the terminal field at the specified location.
`void`	`waitForDisplayString(java.lang.String string, int row, int column, boolean relative, int timeout)` Waits for the presence of a string starting at a particular terminal screen row and column.
`java.lang.String`	`waitForEntities(java.util.List entities, int timeout)` Waits until one of the specified entities is recognized.
`void`	`waitForEntity(java.lang.String entity, int timeout)` Waits until specified entity is recognized.
`void`	`waitForHostData(int timeout)` Processes any pending data received from the host.
`void`	`waitForHostSilence(int duration, int timeout)` Waits until data communication with the host is silent for the specified duration.
`void`	`waitForKeyboardEnabled(int duration, int timeout)` Waits for the keyboard to be enabled for the specified duration of time.
`void`	`waitForMultipleEvents(java.lang.String expression, int timeout)` Waits until the specified sequence of event expressions are satisfied.
`void`	`waitForNewHostScreen(int timeout)` Processes any pending data from the host.
`void`	`waitForUpdate(int topRow, int leftColumn, int bottomRow, int rightColumn, int regionType, boolean relative, int timeout)` Waits for the host to update a specified region on the terminal screen.
`void`	`waitMS(int duration)` Waits for the specified number of milliseconds.
`void`	`writeToMappedAttribute(java.lang.String attribute)` Writes to an attribute from its mapped variable.
`void`	`writeVariableToAttribute(java.lang.String attribute, java.lang.String variable)` Writes the contents of a variable to an attribute.
`void`	`writeVariableToField(java.lang.String recordset, java.lang.String field, java.lang.String variable)` Writes the contents of a variable to a field in the current record of a recordset defined on the current entity.
`void`	`writeVariableToLocation(java.lang.String variable, int row, int column, int maxLength, boolean erase, int echoType)` Writes the contents of a variable to the terminal at a specified location.
`void`	`writeVariableToTerminal(java.lang.String variable, int maxLength, boolean erase, int echoType)` Writes the contents of a variable to the terminal at the current cursor position.

- Field Detail
  - DONT_WAIT_FOR_ECHO
```
static final int DONT_WAIT_FOR_ECHO
```
    echoType which means not to wait for the data written to the terminal to be echoed.
  - WAIT_FOR_CURSOR_MOVE
```
static final int WAIT_FOR_CURSOR_MOVE
```
    echoType which means to wait after writing only until the cursor moves.
  - WAIT_FOR_CURSOR_AUTOTAB
```
static final int WAIT_FOR_CURSOR_AUTOTAB
```
    echoType which means to wait until the cursor reaches the next tabstop.
  - WAIT_FOR_ECHO_BEHIND_CURSOR
```
static final int WAIT_FOR_ECHO_BEHIND_CURSOR
```
    echoType which means to wait until the data written appears behind the cursor.
  - WAIT_FOR_ECHO_SAME_NUMBER
```
static final int WAIT_FOR_ECHO_SAME_NUMBER
```
    echoType which means to wait for the same number of characters which were written are echoed. The characters need not be the same, which is useful for things like password fields.
  - WAIT_FOR_ECHO_TAB_OR_BEHIND_CURSOR
```
static final int WAIT_FOR_ECHO_TAB_OR_BEHIND_CURSOR
```
    echoType which means to wait for the same data to be echoed or for the cursor to appear at the next tabstop.
  - LINEAR_REGION
```
static final int LINEAR_REGION
```
    regionType parameter for the waitForUpdate(int, int, int, int, int, boolean, int) method which specifies a linear region.
  - RECTANGULAR_REGION
```
static final int RECTANGULAR_REGION
```
    regionType parameter for the waitForUpdate(int, int, int, int, int, boolean, int) method which specifies a rectangular region.
  - DESIGN_TOOL_ONLY
```
static final int DESIGN_TOOL_ONLY
```
    context parameter for the defaultValue(java.lang.String, java.lang.String, int) method which specifies a value to be used only when using the Design Tool.
  - DESIGN_TOOL_AND_SERVER
```
static final int DESIGN_TOOL_AND_SERVER
```
    context parameter for the defaultValue(java.lang.String, java.lang.String, int) method which specifies a value to be used only when using both the Design Tool and Server.
  - SCROLL_HOME
```
static final int SCROLL_HOME
```
    movement parameter for the moveCurrentRecordIndex(int) method which specifies to execute the recordset's Home operation.
  - SCROLL_END
```
static final int SCROLL_END
```
    movement parameter for the moveCurrentRecordIndex(int) method which specifies to execute the recordset's End operation.
  - SCROLL_LINE_UP
```
static final int SCROLL_LINE_UP
```
    movement parameter for the moveCurrentRecordIndex(int) method which specifies to execute the recordset's Line Up operation.
  - SCROLL_LINE_DOWN
```
static final int SCROLL_LINE_DOWN
```
    movement parameter for the moveCurrentRecordIndex(int) method which specifies to execute the recordset's Line Down operation.
  - SCROLL_PAGE_UP
```
static final int SCROLL_PAGE_UP
```
    movement parameter for the moveCurrentRecordIndex(int) method which specifies to execute the recordset's Page Down operation.
  - SCROLL_PAGE_DOWN
```
static final int SCROLL_PAGE_DOWN
```
    movement parameter for the moveCurrentRecordIndex(int) method which specifies to execute the recordset's Page Up operation.
  - SYNC_TO_HOST
```
static final int SYNC_TO_HOST
```
    index parameter for the setCurrentRecordIndex(int) method which specifies to set the current index to the current host record.
  - ANY_ROW
```
static final int ANY_ROW
```
    Specifies any row for those methods that allow it as a row value.
  - ANY_COLUMN
```
static final int ANY_COLUMN
```
    Specifies any column for those methods that allow it as a column value.
  - CURRENT_ROW
```
static final int CURRENT_ROW
```
    Specifies the current row for those methods that allow it as a row value.
  - CURRENT_COLUMN
```
static final int CURRENT_COLUMN
```
    Specifies the current column for those methods that allow it as a column value.
- Method Detail
  - checkOperationConditions
```
void checkOperationConditions()
                       throws ApptrieveException
```
    Verifies that operation conditions, as defined in the model, are satisfied. This method should only be called during an operation.
    This method is identical to the CheckOperationConditions command.
    
    Throws:
    
    ApptrieveException
  - defaultValue
```
void defaultValue(java.lang.String attribute,
                  java.lang.String value,
                  int context)
           throws ApptrieveException
```
    Transmits a value to an attribute when unmodified. An attribute is considered modified if it has been written since arriving at the current entity. Direct updates to the terminal via methods such as transmit() do not trigger the modified flag. If the attribute has not been modified, this method will trigger the AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handler assuming the model is not configured to cache attribute writes. This method will not, however, trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    This method is identical to the DefaultValue command.
    Parameters:
    
    attribute - name of attribute to be modified
    
    value - the value to be transmitted
    context - selects when the command will be executed:
    
    DESIGN_TOOL_ONLY - perform only in the design tool
    
    DESIGN_TOOL_AND_SERVER - perform in both the design tool and server
    Throws:
    
    ApptrieveException
  - moveCursor
```
void moveCursor(int row,
                int column)
         throws ApptrieveException
```
    Sets the position of the cursor using row-column coordinates.
    This method is identical to the MoveCursor command.
    
    Parameters:
    
    row - one-based vertical position of the cursor (CURRENT_ROW means the current cursor row).
    
    column - one-based horizontal position of the cursor (CURRENT_COLUMN means the current cursor column).
    
    Throws:
    
    ApptrieveException
  - navigate
```
void navigate(java.lang.String entity)
       throws ApptrieveException
```
    Equivalent to calling the setCurrentEntity(java.lang.String) method.
    This method is identical to the Navigate command.
    
    Parameters:
    
    entity - name of the entity
    
    Throws:
    
    ApptrieveException
  - readFromMappedAttribute
```
void readFromMappedAttribute(java.lang.String attribute)
                      throws ApptrieveException
```
    Reads an attribute on the current entity and stores its value into the variable mapped to that attribute.
    This method is identical to the ReadFromMappedAttr command.
    
    Parameters:
    
    attribute - name of mapped attribute (on current entity) to read
    
    Throws:
    
    ApptrieveException
  - readVariableFromAttribute
```
void readVariableFromAttribute(java.lang.String attribute,
                               java.lang.String variable)
                        throws ApptrieveException
```
    Reads an attribute on the current entity and stores its contents in a variable.
    This method is identical to the ReadVarFromAttr command.
    
    Parameters:
    
    attribute - name of attribute on current entity to be read
    
    variable - name of variable to be updated
    
    Throws:
    
    ApptrieveException
  - readVariableFromField
```
void readVariableFromField(java.lang.String recordset,
                           java.lang.String field,
                           java.lang.String variable)
                    throws ApptrieveException
```
    Reads a field from the current record and stores its contents in a variable.
    This method is identical to the ReadVarFromRecordSetField command.
    
    Parameters:
    
    recordset - name of recordset on current entity containing field to be read
    
    field - name of field to be read
    
    variable - name of variable to be updated
    
    Throws:
    
    ApptrieveException
  - readVariableFromLocation
```
void readVariableFromLocation(java.lang.String variable,
                              int row,
                              int column,
                              int length)
                       throws ApptrieveException
```
    Reads data directly from the terminal and stores it in a variable.
    This method is identical to the ReadVarFromLocation command.
    
    Parameters:
    
    variable - name of variable to be updated
    
    row - the one-based row of the location to be read
    
    column - the one-based column of the location to be read
    
    length - the number of characters to be read
    
    Throws:
    
    ApptrieveException
  - readVariableFromTerminal
```
void readVariableFromTerminal(java.lang.String variable,
                              int length)
                       throws ApptrieveException
```
    Reads terminal data at the current cursor position and stores it in a variable.
    This method is identical to the ReadVarFromTerminal command.
    
    Parameters:
    
    variable - name of variable to be updated
    
    length - the number of characters to be read
    
    Throws:
    
    ApptrieveException
  - resetRecordSet
```
void resetRecordSet(java.lang.String recordset)
             throws ApptrieveException
```
    Resets the state of a recordset on the current entity. All cached information about the recordset will be discarded, including information about what page number is current.
    This method is identical to the ResetRecordset command.
    
    Parameters:
    
    recordset - name of recordset to be reset
    
    Throws:
    
    ApptrieveException
  - shiftCursor
```
void shiftCursor(int vertical,
                 int horizontal)
          throws ApptrieveException
```
    Moves the cursor relative to its current position.
    This method is identical to the ShiftCursor command.
    
    Parameters:
    
    vertical - offset of the cursor (CURRENT_ROW means the current cursor row).
    
    horizontal - offset of the cursor (CURRENT_COLUMN means the current cursor column).
    
    Throws:
    
    ApptrieveException
  - transmit
```
void transmit(java.lang.String string)
       throws ApptrieveException
```
    Writes a string to the terminal at the current cursor position using DONT_WAIT_FOR_ECHO.
    This method is identical to the TransmitANSI command with the rcDontWaitForEcho parameter.
    
    Parameters:
    
    string - the string to transmit
    
    Throws:
    
    ApptrieveException
  - transmit
```
void transmit(java.lang.String string,
              int echoType)
       throws ApptrieveException
```
    Writes a string to the terminal at the current cursor position. The echoType parameter describes whether or not to wait for characters to be echoed, and must be one of the following integer constants:
    This method is identical to the TransmitANSI command.
    Parameters:
    
    string - the string to transmit
    
    echoType - specifies if VHI should wait for the characters to be echoed before returning. This parameter only has an effect on character mode hosts.
    
    Throws:
    
    ApptrieveException
  - transmitTerminalKey
```
void transmitTerminalKey(int key)
                  throws ApptrieveException
```
    Sends a non-alphanumeric terminal key (for example, a Program Function key or a 3270 AID key) to the host. The key is one of the terminal key constants defined in AppConnAidKey.
    This method is identical to the TransmitTerminalKey command.
    
    Parameters:
    
    key - the AppConnAidKey constant for the terminal key
    
    Throws:
    
    ApptrieveException
  - transmitToAttribute
```
void transmitToAttribute(java.lang.String attribute,
                         java.lang.String value)
                  throws ApptrieveException
```
    Writes a string to an attribute on the current entity. This method will trigger the AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handler assuming the model is not configured to cache attribute writes. This method will not, however, trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    This method is identical to the TransmitToAttr command.
    
    Parameters:
    
    attribute - the attribute to be written
    
    value - the value to write
    
    Throws:
    
    ApptrieveException
  - transmitToField
```
void transmitToField(java.lang.String recordset,
                     java.lang.String field,
                     java.lang.String value)
              throws ApptrieveException
```
    Writes a string to a field in the current record in the current recordset. This method will trigger the FieldEventHandler.writeField(com.wrq.vhi.script.api.WriteFieldEvent) event handler assuming the model is not configured to cache field writes. This method will not, however, trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler.
    This method is identical to the TransmitToField command.
    
    Parameters:
    
    recordset - the field's recordset
    
    field - the field in the recordset to be written
    
    value - the value to write
    
    Throws:
    
    ApptrieveException
  - transmitToLocation
```
void transmitToLocation(java.lang.String string,
                        int row,
                        int column)
                 throws ApptrieveException
```
    Transmits a string to the terminal at the specified screen location using DONT_WAIT_FOR_ECHO.
    This method is identical to the TransmitToLocation command with the rcDontWaitForEcho parameter.
    
    Parameters:
    
    string - the string to transmit
    
    row - the row number of the starting location for insertion
    
    column - the column number of the starting location for insertion
    
    Throws:
    
    ApptrieveException
  - transmitToLocation
```
void transmitToLocation(java.lang.String string,
                        int row,
                        int column,
                        int echoType)
                 throws ApptrieveException
```
    Transmits a string to the terminal at the specified screen location.
    This method is identical to the TransmitToLocation command.
    
    Parameters:
    
    string - the string to transmit
    
    row - the row number of the starting location for insertion (CURRENT_ROW means the current cursor row).
    
    column - the column number of the starting location for insertion (CURRENT_COLUMN means the current cursor column).
    
    echoType - specifies if VHI should wait for the characters to be echoed before returning. This parameter only has an effect on character mode hosts. See transmit(java.lang.String) for the list of valid echo types.
    
    Throws:
    
    ApptrieveException
  - transmitToOffset
```
void transmitToOffset(java.lang.String string,
                      int offset)
               throws ApptrieveException
```
    Transmits a string to the terminal at the specified offset using DONT_WAIT_FOR_ECHO.
    This method is identical to the TransmitToOffset command with the rcDontWaitForEcho parameter.
    
    Parameters:
    
    string - the string to transmit
    
    offset - character from the start of the screen buffer
    
    Throws:
    
    ApptrieveException
  - transmitToOffset
```
void transmitToOffset(java.lang.String string,
                      int offset,
                      int echoType)
               throws ApptrieveException
```
    Transmits a string to the terminal at the specified offset.
    This method is identical to the TransmitToOffset command.
    
    Parameters:
    
    string - the string to transmit
    
    offset - character from the start of the screen buffer
    
    echoType - specifies if VHI should wait for the characters to be echoed before returning. This parameter only has an effect on character mode hosts. See transmit(java.lang.String) for the list of valid echo types.
    
    Throws:
    
    ApptrieveException
  - updateAttribute
```
void updateAttribute(java.lang.String attribute)
              throws ApptrieveException
```
    Writes the current entity's cached attribute data for the specified attribute. If data is cached for the attribute, this method will trigger the AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handler. This method will not, however, trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    This method is identical to the UpdateAttribute command.
    
    Parameters:
    
    attribute - name of the attribute to update
    
    Throws:
    
    ApptrieveException
  - updateAttributes
```
void updateAttributes(java.util.Collection attributes)
               throws ApptrieveException
```
    Writes the current entity's cached attribute data for the specified attributes. If data is cached for one or more of the attributes, this method will trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    
    Parameters:
    
    attributes - Collection of attribute names to update
    
    Throws:
    
    ApptrieveException
  - updateAttributes
```
void updateAttributes()
               throws ApptrieveException
```
    Writes the current entity's cached attribute data for all attributes. If data is cached for one or more of the attributes, this method will trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    This method is identical to the UpdateAttributes command.
    
    Throws:
    
    ApptrieveException
  - updateRecordSetField
```
void updateRecordSetField(java.lang.String recordset,
                          java.lang.String field)
                   throws ApptrieveException
```
    Writes the cached field data for the specified field in the recordset. If data is cached for the field, this method will trigger the FieldEventHandler.writeField(com.wrq.vhi.script.api.WriteFieldEvent) event handler. This method will not, however, trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler.
    This method is identical to the UpdateRecordSetField command.
    
    Parameters:
    
    recordset - name of recordset on current entity
    
    field - name of the field to update
    
    Throws:
    
    ApptrieveException
  - updateRecordSetFields
```
void updateRecordSetFields(java.lang.String recordset,
                           java.util.Collection fields)
                    throws ApptrieveException
```
    Writes the cached field data for the specified fields in the recordset. If data is cached for one or more of the fields, this method will trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler.
    
    Parameters:
    
    recordset - name of recordset on current entity
    
    fields - collection of attribute names to update
    
    Throws:
    
    ApptrieveException
  - updateRecordSetFields
```
void updateRecordSetFields(java.lang.String recordset)
                    throws ApptrieveException
```
    Writes the cached field data for all fields in the recordset. If data is cached for one or more of the fields, this method will trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler.
    This method is identical to the UpdateRecordSetFields command.
    
    Parameters:
    
    recordset - name of recordset on current entity
    
    Throws:
    
    ApptrieveException
  - wait
```
void wait(int duration)
   throws ApptrieveException
```
    Waits for the specified number of seconds.
    This method is identical to the Wait command.
    
    Parameters:
    
    duration - the amount of time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitMS
```
void waitMS(int duration)
     throws ApptrieveException
```
    Waits for the specified number of milliseconds.
    This method is identical to the WaitMS command.
    
    Parameters:
    
    duration - the amount of time to wait in milliseconds
    
    Throws:
    
    ApptrieveException
  - waitForCommString
```
void waitForCommString(java.lang.String string,
                       int timeout)
                throws ApptrieveException
```
    Waits until the given string is received from the host.
    This method is identical to the WaitForCommString command.
    
    Parameters:
    
    string - the string to wait for
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCommString
```
void waitForCommString(java.lang.String string,
                       int timeout,
                       int count)
                throws ApptrieveException
```
    Waits until the given string is received from the host a specific number of times.
    This method is identical to the WaitForCommString command.
    
    Parameters:
    
    string - the string to wait for
    
    timeout - the maximum time to wait in seconds
    
    count - the number of times the string must be found
    
    Throws:
    
    ApptrieveException
  - waitForDisplayString
```
void waitForDisplayString(java.lang.String string,
                          int row,
                          int column,
                          boolean relative,
                          int timeout)
                   throws ApptrieveException
```
    Waits for the presence of a string starting at a particular terminal screen row and column.
    This method is identical to the WaitForDisplayString command.
    
    Parameters:
    
    string - the string to wait for
    
    row - if relative is true, offset to cursor row; if relative is false, the one-based screen row (ANY_ROW matches any row)
    
    column - if relative is true, offset to cursor column; if relative is false, the one-based screen column (ANY_COLUMN matches any column)
    
    relative - looks for the string relative to the cursor if true
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCursorAtLocation
```
void waitForCursorAtLocation(int row,
                             int column,
                             int timeout)
                      throws ApptrieveException
```
    Waits until the cursor is at the specified location. If the cursor is already at the specified location this method returns immediately
    This method is identical to the WaitForCursorAtLocation command.
    
    Parameters:
    
    row - the one-based screen row (ANY_ROW matches any row)
    
    column - the one-based screen column (ANY_COLUMN matches any column)
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCursorNotAtLocation
```
void waitForCursorNotAtLocation(int row,
                                int column,
                                int timeout)
                         throws ApptrieveException
```
    Waits until the cursor is not at the specified location. If the cursor is already not at the specified location this method returns immediately.
    This method is identical to the WaitForCursorNotAtLocation command.
    
    Parameters:
    
    row - the one-based screen row (ANY_ROW matches any row)
    
    column - the one-based screen column (ANY_COLUMN matches any column)
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCursorAtTerminalField
```
void waitForCursorAtTerminalField(int row,
                                  int column,
                                  int timeout)
                           throws ApptrieveException
```
    Waits until the cursor is within the terminal field at the specified location. This method only applies to block mode host applications.
    This method is identical to the WaitForCursorAtTerminalField command.
    
    Parameters:
    
    row - the one-based screen row (ANY_ROW matches any row)
    
    column - the one-based screen column (ANY_COLUMN matches any column)
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCursorNotAtTerminalField
```
void waitForCursorNotAtTerminalField(int row,
                                     int column,
                                     int timeout)
                              throws ApptrieveException
```
    Waits until the cursor is not within the terminal field at the specified location. This method only applies to block mode host applications.
    This method is identical to the WaitForCursorNotAtTerminalField command.
    
    Parameters:
    
    row - the one-based screen row (ANY_ROW matches any row)
    
    column - the one-based screen column (ANY_COLUMN matches any column)
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForKeyboardEnabled
```
void waitForKeyboardEnabled(int duration,
                            int timeout)
                     throws ApptrieveException
```
    Waits for the keyboard to be enabled for the specified duration of time.
    This method is identical to the WaitForKeyboardEnabled command.
    
    Parameters:
    
    duration - the duration in seconds that the keyboard must remain enabled before returning.
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForNewHostScreen
```
void waitForNewHostScreen(int timeout)
                   throws ApptrieveException
```
    Processes any pending data from the host. If no data is currently pending, or the amount of data is not sufficient enough to have changed the contents of the screen, wait until the specified timeout for such data. For block mode hosts, any data received from the host is sufficient to consider the screen changed. For character mode hosts anything other than change the cursor position is considered sufficient.
    This method is identical to the WaitForNewHostScreen command.
    
    Parameters:
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
    
    See Also:
    
    waitForHostData(int)
  - waitForHostSilence
```
void waitForHostSilence(int duration,
                        int timeout)
                 throws ApptrieveException
```
    Waits until data communication with the host is silent for the specified duration.
    This method is identical to the WaitForHostSilence command.
    
    Parameters:
    
    duration - the duration in seconds that the communication must be silent before returning
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForMultipleEvents
```
void waitForMultipleEvents(java.lang.String expression,
                           int timeout)
                    throws ApptrieveException
```
    Waits until the specified sequence of event expressions are satisfied. This method utilizes the host events defined in the model to create an expected sequence of host events for which to wait.
    The expression is composed of a sequence of event statements separated by semicolons. The syntax for the expression is as follows:
```
 expression:
     <event_sequence>

 event_sequence:
     <event_statement>
     <event_sequence> ; <event_statement>

 event_statement:
     <event_statement> OR <event_statement>
     <event_statement> AND <event_statement>
     <event_statement> THEN <event_statement>
     NOT <event_statement>
     ( <event_statement> )
     <event>
 
```
    VHI will wait for each event statement to be satisfied before moving on to the next event statement. This method returns once all event statements have been satisfied in the order specified. If all the event statements are not satisfied within the specified timeout, an ApptrieveException will be thrown.
    Note that AND and OR do not imply event sequencing. Events are processed in the order that they are received from the host. If the event sequence is critical, use the THEN operator, which requires the expression on the left to be satisfied before the expression on the right is considered, or use the semicolon statement separator, which has a similar effect.
    This method is identical to the WaitForMultipleEvents command.
    Parameters:
    
    expression - the expression of events to wait for
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForUpdate
```
void waitForUpdate(int topRow,
                   int leftColumn,
                   int bottomRow,
                   int rightColumn,
                   int regionType,
                   boolean relative,
                   int timeout)
            throws ApptrieveException
```
    Waits for the host to update a specified region on the terminal screen.
    This method is identical to the WaitForUpdate command.
    
    Parameters:
    
    topRow - the top row of the region to watch
    
    leftColumn - the left column of the region to watch
    
    bottomRow - the bottom row of the region to watch
    
    rightColumn - the right column of the region to watch
    
    regionType - the type of region to use: LINEAR_REGION or RECTANGULAR_REGION.
    
    relative - true if the region is relative to the cursor position
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCondition
```
void waitForCondition(java.lang.String entity,
                      java.lang.String condition,
                      int timeout)
               throws ApptrieveException
```
    Waits for an expression to become true for the specified entity.
    This method is identical to the WaitForCondition command.
    
    Parameters:
    
    entity - the name of the entity to use as the context for the expression.
    
    condition - the expression to wait for
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCursorAtAttribute
```
void waitForCursorAtAttribute(java.lang.String entity,
                              java.lang.String attribute,
                              int timeout)
                       throws ApptrieveException
```
    Waits until the cursor is positioned within an attribute.
    This method is identical to the WaitForCursorAtAttribute command.
    
    Parameters:
    
    entity - the name of the entity on which the attribute is defined
    
    attribute - the name of the attribute
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForCursorAtRecordSetField
```
void waitForCursorAtRecordSetField(java.lang.String entity,
                                   java.lang.String recordset,
                                   java.lang.String field,
                                   int timeout)
                            throws ApptrieveException
```
    Waits until the cursor is positioned within a recordset field.
    This method is identical to the WaitForCursorAtRecordSetField command.
    
    Parameters:
    
    entity - the name of the entity on which the recordset is defined
    
    recordset - the name of the recordset on which the field is defined
    
    field - the name of the field that can terminate the wait
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - writeToMappedAttribute
```
void writeToMappedAttribute(java.lang.String attribute)
                     throws ApptrieveException
```
    Writes to an attribute from its mapped variable. This method will trigger the AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handler assuming the model is not configured to cache attribute writes. This method will not, however, trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    This method is identical to the WriteToMappedAttr command.
    
    Parameters:
    
    attribute - name of mapped attribute to be written
    
    Throws:
    
    ApptrieveException
  - writeVariableToAttribute
```
void writeVariableToAttribute(java.lang.String attribute,
                              java.lang.String variable)
                       throws ApptrieveException
```
    Writes the contents of a variable to an attribute. This method will trigger the AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handler assuming the model is not configured to cache attribute writes. This method will not, however, trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) event handler.
    This method is identical to the WriteVarToAttr command.
    
    Parameters:
    
    attribute - name of attribute to be written to
    
    variable - name of variable containing value to be written
    
    Throws:
    
    ApptrieveException
  - writeVariableToField
```
void writeVariableToField(java.lang.String recordset,
                          java.lang.String field,
                          java.lang.String variable)
                   throws ApptrieveException
```
    Writes the contents of a variable to a field in the current record of a recordset defined on the current entity. This method will trigger the FieldEventHandler.writeField(com.wrq.vhi.script.api.WriteFieldEvent) event handler assuming the model is not configured to cache field writes. This method will not, however, trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler.
    This method is identical to the WriteVarToField command.
    
    Parameters:
    
    recordset - name of recordset on current entity containing the field to be written to
    
    field - name of field to be written to
    
    variable - name of variable containing value to be written
    
    Throws:
    
    ApptrieveException
  - writeVariableToTerminal
```
void writeVariableToTerminal(java.lang.String variable,
                             int maxLength,
                             boolean erase,
                             int echoType)
                      throws ApptrieveException
```
    Writes the contents of a variable to the terminal at the current cursor position.
    This method is identical to the WriteVarToTerminal command.
    
    Parameters:
    
    variable - name of variable to be read.
    
    maxLength - the maximum number of characters to write
    
    erase - if true and if the length of the string contained in variable is less than maxLength, pad the value written with spaces until maxLength characters have been written.
    
    echoType - type of wait for echo to perform. See transmit(java.lang.String) for values.
    
    Throws:
    
    ApptrieveException
  - writeVariableToLocation
```
void writeVariableToLocation(java.lang.String variable,
                             int row,
                             int column,
                             int maxLength,
                             boolean erase,
                             int echoType)
                      throws ApptrieveException
```
    Writes the contents of a variable to the terminal at a specified location.
    This method is identical to the WriteVarToLocation command.
    
    Parameters:
    
    variable - name variable containing value to be written
    
    row - the row of the location to be written to
    
    column - the starting column of the location to be written to
    
    maxLength - the maximum number of characters to write
    
    erase - if true and if the length of the string contained in variable is less than maxLength, pad the value written with spaces until maxLength characters have been written.
    
    echoType - type of wait for echo to perform. See transmit(java.lang.String) for values.
    
    Throws:
    
    ApptrieveException
  - executeCommandList
```
void executeCommandList(CommandList list)
                 throws ApptrieveException
```
    Executes the specified command list. This is more efficient for executing multiple commands. Using command lists also allows for the execution of back-to-back data stream based wait commands such as WaitForCommString.
    A command list can be constructed as follows: CommandList list = new CommandList(); list.add(new WaitForDisplayString("prompt> ", 5, 0, -8, true)); list.add(new Transmit("run"));
    
    Parameters:
    
    list - the command list to execute.
    
    Throws:
    
    ApptrieveException
  - getStringAtCursor
```
java.lang.String getStringAtCursor(int length)
                            throws ApptrieveException
```
    Gets a string from a linear region of the terminal screen starting at the current cursor position.
    
    Parameters:
    
    length - the length of the string
    
    Returns:
    
    the display string
    
    Throws:
    
    ApptrieveException
  - getStringAtOffset
```
java.lang.String getStringAtOffset(int offset,
                                   int length)
                            throws ApptrieveException
```
    Gets a string from a linear region of the terminal screen starting at the given offset.
    
    Parameters:
    
    offset - the offset from the start of the screen
    
    length - the length of the string
    
    Returns:
    
    the display string
    
    Throws:
    
    ApptrieveException
  - getStringAtLocation
```
java.lang.String getStringAtLocation(int topRow,
                                     int leftColumn,
                                     int numRows,
                                     int numColumns)
                              throws ApptrieveException
```
    Gets a string from a rectangular region of the terminal screen starting at the given row and column.
    
    Parameters:
    
    topRow - the starting row on the screen
    
    leftColumn - the starting column on the screen
    
    numRows - the number of rows to get relative to the starting row
    
    numColumns - the number of columns to get relative to the starting column
    
    Returns:
    
    the display string
    
    Throws:
    
    ApptrieveException
  - getCursorPosition
```
CursorPosition getCursorPosition()
                          throws ApptrieveException
```
    Gets the current position of the cursor on the terminal screen.
    
    Returns:
    
    the cursor position
    
    Throws:
    
    ApptrieveException
  - getLinearTerminalRegion
```
LinearTerminalRegion getLinearTerminalRegion(int offset,
                                             int length)
                                      throws ApptrieveException
```
    Gets the contents of a linear region of the terminal screen. This method gets both the character and terminal attribute content of the region.
    
    Parameters:
    
    offset - the zero-based offset
    
    length - the length
    
    Returns:
    
    the contents of the specified region
    
    Throws:
    
    ApptrieveException
  - getRectangularTerminalRegion
```
RectangularTerminalRegion getRectangularTerminalRegion(int topRow,
                                                       int leftColumn,
                                                       int numRows,
                                                       int numColumns)
                                                throws ApptrieveException
```
    Gets the contents of a rectangular region of the terminal screen. This method gets both the character and terminal attribute content of the region.
    
    Parameters:
    
    topRow - the one-based screen row
    
    leftColumn - the one-based screen column
    
    numRows - the number of rows to get relative to topRow
    
    numColumns - the number of columns to get relative to leftColumn
    
    Returns:
    
    the contents of the specified region
    
    Throws:
    
    ApptrieveException
  - getTerminalScreenSize
```
ScreenSize getTerminalScreenSize()
                          throws ApptrieveException
```
    Gets the size of the terminal screen without the contents.
    
    Returns:
    
    the height and width of the terminal screen in characters
    
    Throws:
    
    ApptrieveException
  - getTerminalScreen
```
RectangularTerminalRegion getTerminalScreen()
                                     throws ApptrieveException
```
    Gets the size and contents of the terminal screen. This method gets both the character and terminal attribute content of the screen.
    
    Returns:
    
    the contents of the entire terminal screen
    
    Throws:
    
    ApptrieveException
  - waitForHostData
```
void waitForHostData(int timeout)
              throws ApptrieveException
```
    Processes any pending data received from the host. If no data is currently pending, wait until the specified timeout for any data to arrive.
    
    Parameters:
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException - if a Host Integrator server error occurs
    
    See Also:
    
    waitForNewHostScreen(int)
  - waitForEntity
```
void waitForEntity(java.lang.String entity,
                   int timeout)
            throws ApptrieveException
```
    Waits until specified entity is recognized.
    
    Parameters:
    
    entity - the name of the entity to wait for
    
    timeout - the maximum time to wait in seconds
    
    Throws:
    
    ApptrieveException
  - waitForEntities
```
java.lang.String waitForEntities(java.util.List entities,
                                 int timeout)
                          throws ApptrieveException
```
    Waits until one of the specified entities is recognized.
    
    Parameters:
    
    entities - array of entity names for which to wait
    
    timeout - the maximum time to wait in seconds
    
    Returns:
    
    the name of the entity recognized
    
    Throws:
    
    ApptrieveException - if a Host Integrator server error occurs
  - getHomeEntity
```
java.lang.String getHomeEntity()
                        throws ApptrieveException
```
    Gets the name of the home entity for the model.
    
    Returns:
    
    the name of the home entity
    
    Throws:
    
    ApptrieveException
  - getModelEntities
```
java.util.List getModelEntities()
                         throws ApptrieveException
```
    Gets the names of all entities in the model.
    
    Returns:
    
    a list of entity names
    
    Throws:
    
    ApptrieveException
  - getEntityDescription
```
java.lang.String getEntityDescription(java.lang.String entity)
                               throws ApptrieveException
```
    Gets the description for an entity.
    
    Parameters:
    
    entity - the name of the entity
    
    Returns:
    
    the description for the entity
    
    Throws:
    
    ApptrieveException
  - getCurrentEntity
```
java.lang.String getCurrentEntity()
                           throws ApptrieveException
```
    Gets the current entity (screen) of the legacy application.
    
    Returns:
    
    the name of the current entity or an empty string if none
    
    Throws:
    
    ApptrieveException
  - setCurrentEntity
```
void setCurrentEntity(java.lang.String entity)
               throws ApptrieveException
```
    Sets the current entity. VHI will determine the sequence of operations needed to arrive at the specified entity and execute them.
    
    Parameters:
    
    entity - name of the entity
    
    Throws:
    
    ApptrieveException
  - getPatternRegion
```
TerminalRegion getPatternRegion(java.lang.String pattern)
                         throws ApptrieveException
```
    Gets the location and contents of the specified pattern. If the specified pattern does not match the contents of the current screen, this method will return null. Entity signature patterns will always match and thus will always return a non-null value.
    
    Parameters:
    
    pattern - a pattern on the current entity
    
    Returns:
    
    the location and contents of the pattern or null if the pattern does not match the current screen.
    
    Throws:
    
    ApptrieveException
  - getPatternRegions
```
java.util.Map getPatternRegions(java.util.List patterns)
                         throws ApptrieveException
```
    Gets the location and contents of the specified patterns. If a pattern does not match the contents of the current screen, its value in the returned map will be null. Entity signature patterns will always match and thus will always have a non-null value.
    
    Parameters:
    
    patterns - a list of patterns on the current entity
    
    Returns:
    
    a map of pattern names to TerminalRegion objects containing the location and contents of the pattern. If a pattern cannot be located on the current screen, the value in the map will be null.
    
    Throws:
    
    ApptrieveException
  - getEntityAttributes
```
java.util.List getEntityAttributes(java.lang.String entity)
                            throws ApptrieveException
```
    Gets the names of all attributes on the specified entity.
    
    Parameters:
    
    entity - name of the entity
    
    Returns:
    
    a list of attribute names
    
    Throws:
    
    ApptrieveException
  - getAttributeMetaData
```
AttributeMetaData getAttributeMetaData(java.lang.String entity,
                                       java.lang.String attribute)
                                throws ApptrieveException
```
    Gets the metadata for the specified attribute.
    
    Parameters:
    
    entity - name of the entity
    
    attribute - name of the attribute on the entity
    
    Returns:
    
    the metadata for the attribute
    
    Throws:
    
    ApptrieveException
  - getAttributeAtCursor
```
java.lang.String getAttributeAtCursor()
                               throws ApptrieveException
```
    Gets the name of the attribute at the current cursor position. Returns null if the cursor is not currently within one of the attributes on the current entity.
    
    Returns:
    
    the attribute name
    
    Throws:
    
    ApptrieveException
  - getAttributeRegion
```
TerminalRegion getAttributeRegion(java.lang.String attribute)
                           throws ApptrieveException
```
    Gets the location and contents of the specified attribute.
    
    Parameters:
    
    attribute - an attribute on the current entity
    
    Returns:
    
    the location and contents of the attribute or null if the attribute is relative to a pattern that cannot be located on the current screen.
    
    Throws:
    
    ApptrieveException
  - getAttributeRegions
```
java.util.Map getAttributeRegions(java.util.List attributes)
                           throws ApptrieveException
```
    Gets the location and contents of the specified attributes.
    
    Parameters:
    
    attributes - a list of attributes on the current entity
    
    Returns:
    
    a map of attribute names to TerminalRegion objects containing the location and contents of the attribute. If an attribute is relative to a pattern that cannot be located on the current screen, the value in the map will be null.
    
    Throws:
    
    ApptrieveException
  - getAttribute
```
java.lang.String getAttribute(java.lang.String attribute)
                       throws ApptrieveException
```
    Reads the specified attribute on the current entity and returns the value. This method will trigger the AttributeEventHandler.readAttribute(com.wrq.vhi.script.api.ReadAttributeEvent) event handler if defined.
    
    Parameters:
    
    attribute - an attribute on the current entity
    
    Returns:
    
    the attribute value
    
    Throws:
    
    ApptrieveException
  - getAttributes
```
java.util.Map getAttributes()
                     throws ApptrieveException
```
    Reads all the attributes on the current entity and returns their values. This method will trigger the AttributeEventHandler.readAttribute(com.wrq.vhi.script.api.ReadAttributeEvent) event handler for each attribute if defined.
    
    Returns:
    
    a map of attribute names to attribute values
    
    Throws:
    
    ApptrieveException
  - getAttributes
```
java.util.Map getAttributes(java.util.List attributes)
                     throws ApptrieveException
```
    Reads the specified attributes on the current entity and returns their values. This method will trigger the AttributeEventHandler.readAttribute(com.wrq.vhi.script.api.ReadAttributeEvent) event handler for each attribute if defined.
    
    Parameters:
    
    attributes - a list of attributes on the current entity
    
    Returns:
    
    a map of attribute names to attribute values
    
    Throws:
    
    ApptrieveException
  - setAttribute
```
void setAttribute(java.lang.String attribute,
                  java.lang.String value)
           throws ApptrieveException
```
    Writes a value to the specified attribute on the current entity. This method will trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) and AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handlers if defined.
    
    Parameters:
    
    attribute - an attribute on the current entity
    
    value - the value to write
    
    Throws:
    
    ApptrieveException
  - setAttributes
```
void setAttributes(java.util.Map attributes)
            throws ApptrieveException
```
    Writes values to the specified attributes on the current entity. This method will trigger the EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) and AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handlers if defined.
    
    Parameters:
    
    attributes - a map of attribute names to values
    
    Throws:
    
    ApptrieveException
  - setAttributeDelayed
```
void setAttributeDelayed(java.lang.String entity,
                         java.lang.String attribute,
                         java.lang.String value)
                  throws ApptrieveException
```
    Queues a value to be written to the specified attribute on the specified entity. The next time VHI recognizes the specified entity, VHI will write the value to the attribute. The EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) and AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handlers will be triggered if defined.
    
    Parameters:
    
    entity - the entity name
    
    attribute - an attribute on the specified entity
    
    value - the value to write
    
    Throws:
    
    ApptrieveException
  - setAttributesDelayed
```
void setAttributesDelayed(java.lang.String entity,
                          java.util.Map attributes)
                   throws ApptrieveException
```
    Queues values to be written to the specified attributes on the specified entity. The next time VHI recognizes the specified entity, VHI will write the values to the attributes. The EntityEventHandler.writeAttributes(com.wrq.vhi.script.api.WriteAttributesEvent) and AttributeEventHandler.writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent) event handlers will be triggered if defined.
    
    Parameters:
    
    entity - the entity name
    
    attributes - a map of attribute names to values
    
    Throws:
    
    ApptrieveException
  - getEntityOperations
```
java.util.List getEntityOperations(java.lang.String entity)
                            throws ApptrieveException
```
    Gets the names of all operations on the specified entity.
    
    Parameters:
    
    entity - name of the entity
    
    Returns:
    
    a list of operation names
    
    Throws:
    
    ApptrieveException
  - getOperationMetaData
```
OperationMetaData getOperationMetaData(java.lang.String entity,
                                       java.lang.String operation)
                                throws ApptrieveException
```
    Gets the metadata for the specified operation.
    
    Parameters:
    
    entity - name of the entity
    
    operation - name of the operation on the entity
    
    Returns:
    
    the metadata for the operation
    
    Throws:
    
    ApptrieveException
  - executeOperation
```
void executeOperation(java.lang.String operation)
               throws ApptrieveException
```
    Performs an operation on the current entity. This method will trigger the OperationEventHandler.executeOperation(com.wrq.vhi.script.api.ExecuteOperationEvent) event handler if defined.
    
    Parameters:
    
    operation - the operation name
    
    Throws:
    
    ApptrieveException
  - getEntityRecordSets
```
java.util.List getEntityRecordSets(java.lang.String entity)
                            throws ApptrieveException
```
    Gets the names of all recordsets on the specified entity.
    
    Parameters:
    
    entity - name of the entity
    
    Returns:
    
    a list of recordset names
    
    Throws:
    
    ApptrieveException
  - getRecordSetMetaData
```
RecordSetMetaData getRecordSetMetaData(java.lang.String entity,
                                       java.lang.String recordset)
                                throws ApptrieveException
```
    Gets the metadata for the specified recordset.
    
    Parameters:
    
    entity - name of the entity
    
    recordset - name of the recordset on the entity
    
    Returns:
    
    the metadata for the recordset
    
    Throws:
    
    ApptrieveException
  - getFieldMetaData
```
FieldMetaData getFieldMetaData(java.lang.String entity,
                               java.lang.String recordset,
                               java.lang.String field)
                        throws ApptrieveException
```
    Gets the metadata for the specified recordset field.
    
    Parameters:
    
    entity - name of the entity
    
    recordset - name of the recordset on the entity
    
    field - name of the field on the recordset
    
    Returns:
    
    the metadata for the recordset field
    
    Throws:
    
    ApptrieveException
  - getCurrentRecordSet
```
java.lang.String getCurrentRecordSet()
                              throws ApptrieveException
```
    Gets the name of the current recordset.
    
    Returns:
    
    the name of the current recordset or an empty string if none
    
    Throws:
    
    ApptrieveException
  - setCurrentRecordSet
```
void setCurrentRecordSet(java.lang.String recordset)
                  throws ApptrieveException
```
    Sets the current recordset by name.
    
    Parameters:
    
    recordset - the name of the recordset to make current
    
    Throws:
    
    ApptrieveException
  - fetchRecords
```
ModelRecordSet fetchRecords(int maxRows,
                            java.util.List fields,
                            java.lang.String filterExpression)
                     throws ApptrieveException
```
    Fetches up to the maximum number of rows specified from the current recordset starting with the next record. If the maximum number of rows to fetch is zero, all remaining records will be fetched. The last record fetched will be the current record unless the end of the recordset was reached.
    Filter Expression Syntax:
```
 expression:
     <expression> OR <expression>
     <expression> AND <expression>
     NOT <expression>
     ( <expression> )
     <value_expression> = <value_expression>
     <value_expression> =* <value_expression>
     <value_expression> != <value_expression>
     <value_expression> < <value_expression>
     <value_expression> > <value_expression>
     <value_expression> <= <value_expression>
     <value_expression> >= <value_expression>

 value_expression:
     <value_expression> + <value_expression>
     <value_expression> - <value_expression>
     <value_expression> * <value_expression>
     <value_expression> / <value_expression>
     <variable_reference>
     <attribute_reference>
     <field_reference>
     <constant>

 variable_reference:
     Variables.<variable_name>

 field_reference:
     <recordset_name>.<field_name>

 attribute_reference:
     <attribute_name>

 constant:
     " <string> "
     <number>
 
```
    Filter Expression Examples:
```
 patients.LastName <> "smith"
 All recordset fields in the patients recordset that are not "smith."

 NOT (patients.LastName = "smith")
 All recordset fields in the patients recordset that are not "smith."

 (SearchResults.LastName = "smith") and (SearchResults.FirstName = "Steven")
 All records in the SearchResults recordset with the last name "smith" and first name "Steven."

 AccountNumbers.Accounts >= 10000 and AccountNumbers.Accounts <= 20000
 All fields in the AccountNumbers recordset greater than or equal to 10000 and less than or equal to 20000.

 (AccountNumbers.AcctNum >= variables.MinAccount) and (AccountNumbers.AcctNum <= variables.MaxAccount)
 AcctNum field in the AccountNumbers recordset greater than or equal to variable
 MinAccount and less than or equal to variable MaxAccount
 
```
    Parameters:
    
    maxRows - the maximum number of rows to fetch
    
    fields - list of the field names to fetch or null for all
    
    filterExpression - an expression that qualifies the records to fetch
    
    Returns:
    
    the resulting records fetched. If no records are fetched the ModelRecordSet object returned will have no records.
    
    Throws:
    
    ApptrieveException
  - getCurrentRecordIndex
```
int getCurrentRecordIndex()
                   throws ApptrieveException
```
    Gets the index of the current record in the current recordset.
    
    Returns:
    
    the index of the current record
    
    Throws:
    
    ApptrieveException
  - setCurrentRecordIndex
```
boolean setCurrentRecordIndex(int index)
                       throws ApptrieveException
```
    Sets the current record in the current recordset by index.
    
    Parameters:
    
    index - the index of the record to make current or SYNC_TO_HOST to make the current host record current
    
    Returns:
    
    true if the current record was changed to the corresponding to index
    
    Throws:
    
    ApptrieveException
  - nextRecord
```
ModelRecord nextRecord(java.lang.String filterExpression)
                throws ApptrieveException
```
    Finds and return a record in the current recordset using a filter expression starting with the record following the current record. If the current record is before the first record in the recordset, searching starts with the first record.
    See fetchRecords(int, java.util.List, java.lang.String) for filter expression syntax.
    
    Parameters:
    
    filterExpression - an expression that qualifies the record to find
    
    Returns:
    
    the first record that matches the filter expression. If no record matches the filter expression, the method returns null.
    
    Throws:
    
    ApptrieveException
  - moveCurrentRecordIndex
```
void moveCurrentRecordIndex(int movement)
                     throws ApptrieveException
```
    Moves the current record index to a new position in the current recordset. The movement can be one of the following:
    Parameters:
    
    movement - the type of movement to perform
    
    Throws:
    
    ApptrieveException
  - getCurrentRecord
```
ModelRecord getCurrentRecord()
                      throws ApptrieveException
```
    Fetches the current record in the current recordset.
    
    Returns:
    
    the current record or null if there is no current record
    
    Throws:
    
    ApptrieveException
  - selectCurrentRecord
```
void selectCurrentRecord()
                  throws ApptrieveException
```
    Performs the model-defined selection operation for the current recordset.
    
    Throws:
    
    ApptrieveException
  - selectRecordByFilter
```
boolean selectRecordByFilter(java.lang.String filterExpression)
                      throws ApptrieveException
```
    Finds a record in the current recordset using a filter expression and performs the model-defined selection operation. The search starts with the record following the current record. If the current record is before the first record in the recordset, searching starts with the first record.
    See fetchRecords(int, java.util.List, java.lang.String) for filter expression syntax.
    
    Parameters:
    
    filterExpression - an expression that qualifies the record to select
    
    Returns:
    
    true if a matching record is found and the selection succeeds
    
    Throws:
    
    ApptrieveException
  - selectRecordByIndex
```
boolean selectRecordByIndex(int index)
                     throws ApptrieveException
```
    Sets the current record in the current recordset by index and then performs the model-defined selection operation.
    
    Parameters:
    
    index - the index of the record to select
    
    Returns:
    
    true if the record is found and the selection succeeds
    
    Throws:
    
    ApptrieveException
  - insertRecord
```
void insertRecord(java.util.Map record)
           throws ApptrieveException
```
    Inserts a record into the current recordset. This method will trigger the RecordSetEventHandler.insertRecord(com.wrq.vhi.script.api.InsertRecordEvent) event handler if defined, otherwise the model-defined insertion method will be used.
    
    Parameters:
    
    record - a map of field names to values
    
    Throws:
    
    ApptrieveException
  - insertRecords
```
void insertRecords(java.util.List records)
            throws ApptrieveException
```
    Inserts multiple records into the current recordset. This method will trigger the RecordSetEventHandler.insertRecord(com.wrq.vhi.script.api.InsertRecordEvent) event handler for each record if defined, otherwise the model-defined insertion method will be used.
    
    Parameters:
    
    records - a list of java.util.Map objects, one for each record to insert into the entity. Each map should contain a set of field name and value pairs.
    
    Throws:
    
    ApptrieveException
  - updateCurrentRecord
```
void updateCurrentRecord(java.util.Map record)
                  throws ApptrieveException
```
    Updates the field values of the current record in the current recordset. This method will trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler for each record if defined, otherwise the model-defined update method will be used.
    
    Parameters:
    
    record - a map of field names to values
    
    Throws:
    
    ApptrieveException
  - updateRecordByFilter
```
boolean updateRecordByFilter(java.util.Map record,
                             java.lang.String filterExpression)
                      throws ApptrieveException
```
    Finds a record in the current recordset using a filter expression and updates its field values. The search starts with the record following the current record. If the current record is before the first record in the recordset, searching starts with the first record.
    This method will trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler for the record found, otherwise the model-defined update method will be used.
    See fetchRecords(int, java.util.List, java.lang.String) for filter expression syntax.
    
    Parameters:
    
    record - a map of field names to values
    
    filterExpression - an expression that qualifies the record to update
    
    Returns:
    
    true if a matching record is found and the update succeeds
    
    Throws:
    
    ApptrieveException
  - updateRecordByIndex
```
boolean updateRecordByIndex(java.util.Map record,
                            int index)
                     throws ApptrieveException
```
    Updates the field values of the record at the specified index. This method will trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler if defined, otherwise the model-defined update method will be used.
    
    Parameters:
    
    record - a map of field names to values
    
    index - the index of the record to update
    
    Returns:
    
    true if the record is found and the update succeeds
    
    Throws:
    
    ApptrieveException
  - updateRecords
```
int updateRecords(java.util.Map record,
                  java.lang.String filterExpression)
           throws ApptrieveException
```
    Finds records in the current recordset using a filter expression and update their field values. The search starts with the record following the current record and proceeds until the end of the recordset. If the current record is before the first record in the recordset, searching starts with the first record. Any record found that matches the filter expression is updated with the specified values.
    This method will trigger the RecordSetEventHandler.updateRecord(com.wrq.vhi.script.api.UpdateRecordEvent) event handler for the record found, otherwise the model-defined update method will be used.
    See fetchRecords(int, java.util.List, java.lang.String) for filter expression syntax.
    
    Parameters:
    
    record - a map of field names to values
    
    filterExpression - an expression that qualifies which records to update
    
    Returns:
    
    the number of records updated
    
    Throws:
    
    ApptrieveException
  - getRecordSetRegion
```
TerminalRegion getRecordSetRegion(java.lang.String recordset)
                           throws ApptrieveException
```
    Gets the location and contents of the specified recordset.
    
    Parameters:
    
    recordset - a recordset on the current entity
    
    Returns:
    
    the location and contents of the recordset or null if the recordset is relative to a pattern that cannot be located on the current screen.
    
    Throws:
    
    ApptrieveException
  - getRecordRegion
```
TerminalRegion getRecordRegion(java.lang.String recordset)
                        throws ApptrieveException
```
    Gets the location and contents of the current record in the specified recordset.
    
    Parameters:
    
    recordset - recordset on the current entity
    
    Returns:
    
    the location and contents of the current record
    
    Throws:
    
    ApptrieveException
  - getFieldRegion
```
TerminalRegion getFieldRegion(java.lang.String field)
                       throws ApptrieveException
```
    Gets the location and contents of the specified field in the current record of the current recordset.
    
    Parameters:
    
    field - field in the current recordset
    
    Returns:
    
    the location and contents of the field in the current record
    
    Throws:
    
    ApptrieveException
  - getFieldRegions
```
java.util.Map getFieldRegions(java.util.List fields)
                       throws ApptrieveException
```
    Gets the location and contents of the specified fields in the current record of the current recordset.
    
    Parameters:
    
    fields - a list of fields in the current recordset
    
    Returns:
    
    a map of field names to TerminalRegion objects containing the location and contents of each field
    
    Throws:
    
    ApptrieveException
  - getModelVariableNames
```
java.util.List getModelVariableNames()
                              throws ApptrieveException
```
    Gets the names of all variables in the model.
    
    Returns:
    
    a list of variable names
    
    Throws:
    
    ApptrieveException
  - getVariableMetaData
```
VariableMetaData getVariableMetaData(java.lang.String variable)
                              throws ApptrieveException
```
    Gets the metadata for the specified variable.
    
    Parameters:
    
    variable - name of the variable
    
    Returns:
    
    the metadata for the variable
    
    Throws:
    
    ApptrieveException
  - getModelVariable
```
java.lang.String getModelVariable(java.lang.String variable)
                           throws ApptrieveException
```
    Gets the value of a model variable. If multiple values are needed it is more efficient to call getModelVariables().
    
    Parameters:
    
    variable - the model variable name
    
    Returns:
    
    the model variable value
    
    Throws:
    
    ApptrieveException
  - getModelVariables
```
java.util.Map getModelVariables()
                         throws ApptrieveException
```
    Gets the values of all model variables.
    
    Returns:
    
    a map of variable names to values
    
    Throws:
    
    ApptrieveException
  - setModelVariable
```
void setModelVariable(java.lang.String variable,
                      java.lang.String value)
               throws ApptrieveException
```
    Sets the value of a variable.
    
    Parameters:
    
    variable - the model variable name
    
    value - the model variable value
    
    Throws:
    
    ApptrieveException
  - setModelVariables
```
void setModelVariables(java.util.Map variables)
                throws ApptrieveException
```
    Sets the values of one or more variables.
    
    Parameters:
    
    variables - a map of variable names to values
    
    Throws:
    
    ApptrieveException
  - getTableNames
```
java.util.List getTableNames()
                      throws ApptrieveException
```
    Gets the names of all tables in the model.
    
    Returns:
    
    a list of table names
    
    Throws:
    
    ApptrieveException
  - getTableDescription
```
java.lang.String getTableDescription(java.lang.String table)
                              throws ApptrieveException
```
    Gets the description for a table.
    
    Parameters:
    
    table - name of the table
    
    Returns:
    
    the description for the table
    
    Throws:
    
    ApptrieveException
  - getTableProcedures
```
java.util.List getTableProcedures(java.lang.String table)
                           throws ApptrieveException
```
    Gets the names of all procedures in the specified table.
    
    Parameters:
    
    table - name of the table
    
    Returns:
    
    a list of procedure names
    
    Throws:
    
    ApptrieveException
  - getProcedureMetaData
```
ProcedureMetaData getProcedureMetaData(java.lang.String table,
                                       java.lang.String procedure)
                                throws ApptrieveException
```
    Gets the metadata for the specified procedure in a table.
    
    Parameters:
    
    table - name of the table
    
    procedure - name of the procedure in the table
    
    Returns:
    
    the metadata for the procedure
    
    Throws:
    
    ApptrieveException
  - getTableColumns
```
java.util.List getTableColumns(java.lang.String table)
                        throws ApptrieveException
```
    Gets the names of all columns in the specified table.
    
    Parameters:
    
    table - name of the table
    
    Returns:
    
    a list of column names
    
    Throws:
    
    ApptrieveException
  - getColumnMetaData
```
ColumnMetaData getColumnMetaData(java.lang.String table,
                                 java.lang.String column)
                          throws ApptrieveException
```
    Gets the metadata for the specified column in a table.
    
    Parameters:
    
    table - name of the table
    
    column - name of the column in the table
    
    Returns:
    
    the metadata for the column
    
    Throws:
    
    ApptrieveException
  - executeTableProcedure
```
ProcedureRecordSet executeTableProcedure(java.lang.String tableName,
                                         java.lang.String procedureName,
                                         java.util.Map dataInputValues,
                                         java.util.Map filterValues,
                                         boolean filterIsCaseSensitive,
                                         java.util.List outputColumnNames,
                                         int maxRows)
                                  throws ApptrieveException
```
    Performs a procedure on a table defined in the model. This method will trigger the ProcedureEventHandler.executeProcedure(com.wrq.vhi.script.api.ExecuteProcedureEvent) event handler for the procedure if defined.
    
    Parameters:
    
    tableName - name of the table
    
    procedureName - name of the procedure to perform
    
    dataInputValues - set of data input column name-value pairs to use (not required for SELECT and DELETE procedures)
    
    filterValues - set of filter column name-value pairs to use (not required for INSERT procedures)
    
    filterIsCaseSensitive - true means that filter comparisons are case sensitive
    
    outputColumnNames - list of the table's column names to return as output (not required for UPDATE, INSERT or DELETE procedures)
    
    maxRows - the maximum number of rows to return
    
    Returns:
    
    the records retrieved for SELECT procedures, otherwise null
    
    Throws:
    
    ApptrieveException
  - executeSQLStatement
```
ProcedureRecordSet executeSQLStatement(java.lang.String sqlStatement)
                                throws ApptrieveException
```
    Executes an SQL statement on a table defined in the model. The SQL statement will be resolved into a set of one or more procedures.
    
    Parameters:
    
    sqlStatement - the SQL statement to execute
    
    Returns:
    
    the results of the query
    
    Throws:
    
    ApptrieveException

Interface HostSession

Field Summary

Method Summary

Field Detail

DONT_WAIT_FOR_ECHO

WAIT_FOR_CURSOR_MOVE

WAIT_FOR_CURSOR_AUTOTAB

WAIT_FOR_ECHO_BEHIND_CURSOR

WAIT_FOR_ECHO_SAME_NUMBER

WAIT_FOR_ECHO_TAB_OR_BEHIND_CURSOR

LINEAR_REGION

RECTANGULAR_REGION

DESIGN_TOOL_ONLY

DESIGN_TOOL_AND_SERVER

SCROLL_HOME

SCROLL_END

SCROLL_LINE_UP

SCROLL_LINE_DOWN

SCROLL_PAGE_UP

SCROLL_PAGE_DOWN

SYNC_TO_HOST

ANY_ROW

ANY_COLUMN

CURRENT_ROW

CURRENT_COLUMN

Method Detail

checkOperationConditions

defaultValue

moveCursor

navigate

readFromMappedAttribute

readVariableFromAttribute

readVariableFromField

readVariableFromLocation

readVariableFromTerminal

resetRecordSet

shiftCursor

transmit

transmit

transmitTerminalKey

transmitToAttribute

transmitToField

transmitToLocation

transmitToLocation

transmitToOffset

transmitToOffset

updateAttribute

updateAttributes

updateAttributes

updateRecordSetField

updateRecordSetFields

updateRecordSetFields

wait

waitMS

waitForCommString

waitForCommString

waitForDisplayString

waitForCursorAtLocation

waitForCursorNotAtLocation

waitForCursorAtTerminalField

waitForCursorNotAtTerminalField

waitForKeyboardEnabled

waitForNewHostScreen

waitForHostSilence

waitForMultipleEvents

waitForUpdate

waitForCondition

waitForCursorAtAttribute

waitForCursorAtRecordSetField

writeToMappedAttribute

writeVariableToAttribute

writeVariableToField

writeVariableToTerminal

writeVariableToLocation

executeCommandList

getStringAtCursor

getStringAtOffset

getStringAtLocation

getCursorPosition

getLinearTerminalRegion