Examples of org.jfree.report.structure.Group

org.jfree.report.structure.Group
A report group. A group is a repeated section which is bound to an expression.

Default Behaviour
Whether a new group should be started is evaluated by the group's expression. If that expression returns Boolean.TRUE, a new group instance is started. (That expression answers the Questions: 'Does this group instance end here?').
If the group expression is invalid or there is no group expression at all, a group will consume all rows until the datasource is no longer advanceable. @author David Gilbert @author Thomas Morgner

  private Group group;
  private GroupingExpressionReadHandler groupingExpressionReadHandler;


  public GroupReadHandler()
  {
    group = new Group();
  }

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      throw new ParseException
          ("Required element 'grouping-expression' is missing.", getLocator());
    }


    super.doneParsing();
    Group group = (Group) getElement();
    group.setGroupingExpression(groupingExpressionReadHandler.getExpression());
  }

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    final Node nodeParent = node.getParent();
    if (nodeParent == null)
    {
      return false;
    }
    Group group = nodeParent.getGroup();
    if (group == null)
    {
      return false;
    }


    // maybe we can move this state into the layoutstate itself so that
    // we do not have to rebuild that crap all the time.
    LayoutExpressionRuntime ler = null;


    // OK, now we are almost complete.
    while (group != null)
    {
      if (ler == null)
      {
        ler = getExpressionRuntime(fc, node);
      }


      ler.setDeclaringParent(group);


      final Expression groupingExpression = group.getGroupingExpression();
      if (groupingExpression != null)
      {
        groupingExpression.setRuntime(ler);
        final Object groupFinished;
        try
        {
          groupFinished = groupingExpression.computeValue();
        }
        finally
        {
          groupingExpression.setRuntime(null);
        }


        if (Boolean.TRUE.equals(groupFinished))
        {
          // If the group expression returns true, we should pack our belongings
          // and stop with that process. The group is finished.


          // In Cobol, this would mean that one of the group-fields has changed.
          return true;
        }
      }


      final Node parent = group.getParent();
      if (parent == null)
      {
        group = null;
      }
      else

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  private Group group;
  private GroupingExpressionReadHandler groupingExpressionReadHandler;


  public GroupReadHandler()
  {
    group = new Group();
  }

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      throw new ParseException
          ("Required element 'grouping-expression' is missing.", getLocator());
    }


    super.doneParsing();
    Group group = (Group) getElement();
    group.setGroupingExpression(groupingExpressionReadHandler.getExpression());
  }

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  private Group group;
  private GroupingExpressionReadHandler groupingExpressionReadHandler;


  public GroupReadHandler()
  {
    group = new Group();
  }

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      throw new ParseException
          ("Required element 'grouping-expression' is missing.", getLocator());
    }


    super.doneParsing();
    final Group group = (Group) getElement();
    group.setGroupingExpression(groupingExpressionReadHandler.getExpression());
  }

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    final Node nodeParent = node.getParent();
    if (nodeParent == null)
    {
      return false;
    }
    Group group = nodeParent.getGroup();
    if (group == null)
    {
      return false;
    }


    // maybe we can move this state into the layoutstate itself so that
    // we do not have to rebuild that crap all the time.
    LayoutExpressionRuntime ler = null;


    // OK, now we are almost complete.
    while (group != null)
    {
      if (ler == null)
      {
        ler = getExpressionRuntime(fc, node);
      }


      ler.setDeclaringParent(group);


      final Expression groupingExpression = group.getGroupingExpression();
      if (groupingExpression != null)
      {
        groupingExpression.setRuntime(ler);
        final Object groupFinished;
        try
        {
          groupFinished = groupingExpression.computeValue();
        }
        finally
        {
          groupingExpression.setRuntime(null);
        }


        if (Boolean.TRUE.equals(groupFinished))
        {
          // If the group expression returns true, we should pack our belongings
          // and stop with that process. The group is finished.


          // In Cobol, this would mean that one of the group-fields has changed.
          return true;
        }
      }


      final Node parent = group.getParent();
      if (parent == null)
      {
        group = null;
      }
      else

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    final Node nodeParent = node.getParent();
    if (nodeParent == null)
    {
      return false;
    }
    Group group = nodeParent.getGroup();
    if (group == null)
    {
      return false;
    }


    // maybe we can move this state into the layoutstate itself so that
    // we do not have to rebuild that crap all the time.
    LayoutExpressionRuntime ler = null;


    // OK, now we are almost complete.
    while (group != null)
    {
      if (ler == null)
      {
        ler = getExpressionRuntime(fc, node);
      }


      ler.setDeclaringParent(group);


      final Expression groupingExpression = group.getGroupingExpression();
      if (groupingExpression != null)
      {
        groupingExpression.setRuntime(ler);
        final Object groupFinished;
        try
        {
          groupFinished = groupingExpression.computeValue();
        }
        finally
        {
          groupingExpression.setRuntime(null);
        }


        if (Boolean.TRUE.equals(groupFinished))
        {
          // If the group expression returns true, we should pack our belongings
          // and stop with that process. The group is finished.


          // In Cobol, this would mean that one of the group-fields has changed.
          return true;
        }
      }


      final Node parent = group.getParent();
      if (parent == null)
      {
        group = null;
      }
      else

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Related Classes of org.jfree.report.structure.Group

org.jfree.report.flow.layoutprocessor.LayoutControllerUtil

org.jfree.report.modules.factories.report.flow.GroupReadHandler

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Examples of org.jfree.report.structure.Group

Default Behaviour

Related Classes of org.jfree.report.structure.Group