Bug 182687 Exception thrown out when preview crosstab with toc setting
When preview crosstab which has set the toc property, exception will be thrown. Engine need to handle the case during toc processing while no IR object is associated with current content object. java.lang.NullPointerException at org.eclipse.birt.report.engine.executor.ReportItemExecutor.startTOCEntry(ReportItemExecutor.java:591) at org.eclipse.birt.report.engine.executor.ExtendedItemExecutor.execute(ExtendedItemExecutor.java:140) at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportItemExecutor.execute(LocalizedReportItemExecutor.java:36) at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layoutChildren(HTMLPageLM.java:124) at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ReportItemExecutor.java
close( );
	}
	/**
	 * does the executor has child executor
	 * 
	 * @return
	 */
	public boolean hasNextChild( )
	{
		return false;
	}
	public IReportItemExecutor getNextChild( )
	{
		return null;
	}
	
	/**
	 * reset the state of the report item executor. This operation will reset
	 * all property of this object
	 * 
	 */
	void reset( )
	{
		tocEntry = null;
	}
	
	IContent getParentContent()
	{
		if (parent != null)
		{