org.jfree.report.flow

Interface FlowController

public interface FlowController

A flow-controller is an immutable object. Whenever an method, that may change the internal state of the controller, is invoked, a new instance of the controller is returned.

Author: Thomas Morgner

Method Summary
FlowController	activateExpressions(ExpressionSlot[] expressions) Activates expressions that compute running values.
FlowController	createPrecomputeInstance()
FlowController	deactivateExpressions()
ExpressionSlot[]	getActiveExpressions() Returns the current expression slots of all currently active expressions.
String	getExportDescriptor()
GlobalMasterRow	getMasterRow()
PrecomputedValueRegistry	getPrecomputedValueRegistry()
ReportContext	getReportContext()
ReportJob	getReportJob()
boolean	isAdvanceRequested()
FlowController	performOperation(FlowControlOperation operation)
FlowController	performQuery(String query)
FlowController	performReturnFromQuery()
FlowController	performSubReportQuery(String query, ParameterMapping[] inputParameters, ParameterMapping[] outputParameters)

Method Detail

activateExpressions

public FlowController activateExpressions(ExpressionSlot[] expressions)

Activates expressions that compute running values. This does not activate precomputed expressions.

Parameters: expressions

Returns:

Throws: DataSourceException

createPrecomputeInstance

public FlowController createPrecomputeInstance()

deactivateExpressions

public FlowController deactivateExpressions()

getActiveExpressions

public ExpressionSlot[] getActiveExpressions()

Returns the current expression slots of all currently active expressions. (Maybe we should limit the access to the name and value of the expression instead?)

Returns:

Throws: DataSourceException