Class BufferingLayoutController

Method Details

• advance

  public LayoutController advance(ReportTarget target) throws DataSourceException, ReportDataFactoryException, ReportProcessingException

  Advances the processing position.

  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.

• joinWithParent

  protected LayoutController joinWithParent() throws ReportProcessingException, ReportDataFactoryException, DataSourceException

  Joins the layout controller with the parent. This simply calls join(org.jfree.report.flow.FlowController) on the parent. A join operation is necessary to propagate changes in the flow-controller to the parent for further processing.

  Returns:

  the joined parent.

  Throws:

  IllegalStateException - if this layout controller has no parent.

  ReportProcessingException

  ReportDataFactoryException

  DataSourceException

• initialize

  public void initialize(Object node, FlowController flowController, LayoutController parent) throws DataSourceException, ReportDataFactoryException, ReportProcessingException

  Initializes the layout controller. This method is called exactly once. It is the creators responsibility to call this method.

  Calling initialize after the first advance must result in a IllegalStateException.

  Specified by:

  initialize in interface LayoutController

  Overrides:

  initialize in class AbstractLayoutController

  Parameters:

  node - the currently processed object or layout node.

  flowController - the current flow controller.

  parent - the parent layout controller that was responsible for instantiating this controller.

  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.

• getInitialDelegate

  protected abstract LayoutController getInitialDelegate()

• isAdvanceable

  public boolean isAdvanceable()

  Description copied from interface: LayoutController

  Checks, whether the layout controller would be advanceable. If this method returns true, it is generally safe to call the 'advance()' method.

  Returns:

  true, if the layout controller is advanceable, false otherwise.

• join

  public LayoutController join(FlowController flowController) throws ReportProcessingException, DataSourceException

  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.

  Parameters:

  flowController - the flow controller of the parent.

  Returns:

  the joined layout controller that incorperates all changes from the delegate.

  Throws:

  ReportProcessingException

  DataSourceException

• clone

  public Object clone()

  Description copied from interface: LayoutController

  Creates a copy of this layout controller.

  Specified by:

  clone in interface LayoutController

  Overrides:

  clone in class AbstractLayoutController

  Returns:

  a copy.