org.jfree.report.flow.layoutprocessor

Class ContentElementLayoutController

Implemented Interfaces:
Cloneable, LayoutController

public class ContentElementLayoutController
extends ElementLayoutController

Creation-Date: 24.11.2006, 15:06:56
Author:
Thomas Morgner

Nested Class Summary

Nested classes/interfaces inherited from class org.jfree.report.flow.layoutprocessor.ElementLayoutController

ElementLayoutController.ElementPrecomputeKey

Field Summary

Fields inherited from class org.jfree.report.flow.layoutprocessor.ElementLayoutController

FINISHED, FINISHING, NOT_STARTED, OPENED, WAITING_FOR_JOIN

Constructor Summary

ContentElementLayoutController()

Method Summary

LayoutController
join(FlowController flowController)
Joins with a delegated process flow.
protected LayoutController
processContent(ReportTarget target)
Processes any content in this element.

Methods inherited from class org.jfree.report.flow.layoutprocessor.ElementLayoutController

advance, clone, computeAttributes, createPrecomputeInstance, finishElement, getAttributeMap, getElement, getExpressionsCount, getFlowController, getIterationCount, getNode, getParent, getProcessingState, handleDefaultEndElement, initialize, isAdvanceable, isPrecomputing, performElementPrecomputation, processContent, setFlowController, setParent, setProcessingState, startData, startElement, toString, tryRepeatingCommit

Constructor Details

ContentElementLayoutController

public ContentElementLayoutController()

Method Details

join

public LayoutController join(FlowController flowController)
Joins with a delegated process flow. This is generally called from a child flow and should *not* (I mean it!) be called from outside. If you do, you'll suffer.
Specified by:
join in interface LayoutController
Parameters:
flowController - the flow controller of the parent.
Returns:
the joined layout controller that incorperates all changes from the delegate.

processContent

protected LayoutController processContent(ReportTarget target)
            throws DataSourceException,
                   ReportProcessingException,
                   ReportDataFactoryException
Processes any content in this element. This method is called when the processing state is 'OPENED'. The returned layout controller will retain the 'OPENED' state as long as there is more content available. Once all content has been processed, the returned layout controller should carry a 'FINISHED' state.
Overrides:
processContent in interface ElementLayoutController
Parameters:
target - the report target that receives generated events.
Returns:
the new layout controller instance representing the new state.
Throws:
DataSourceException - if there was a problem reading data from the datasource.
ReportProcessingException - if there was a general problem during the report processing.
ReportDataFactoryException - if a query failed.