Bug 207897 [Automation][Regression]A DataException is thrown out when preview reportdesign
Description: A DataException is thrown out when preview reportdesign Test Date: 20071030 Test Build: BIRT2.2.2 v20071029 Step to reproduce: 1. Use the reportdesign attached 2. Preview it Expect result: Report can be previewed without any exception. Actual result: A DataException is thrown out.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
/**
	 * Add a page break listener.
	 * 
	 * @param listener
	 *            the page break listener.
	 */
	public void addPageBreakListener( IPageBreakListener listener )
	{
		if ( pageBreakListeners == null )
		{
			pageBreakListeners = new ArrayList( );
		}
		pageBreakListeners.add( listener );
	}
	
	/**
	 * Notify page break listeners that page is broken.
	 */
	public void firePageBreakEvent( )
	{
		if ( pageBreakListeners != null )
		{
			for ( int i = 0; i < pageBreakListeners.size( ); i++ )
			{
				( (IPageBreakListener) pageBreakListeners.get( i ) )
						.onPageBreak( );
			}
		}
	}