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
private int MAX_ERRORS = 100;
	/**
	 * 
	 */
	private IDocArchiveReader dataSource;
	
	/**
	 * All page break listeners.
	 */
	private List pageBreakListeners;
	
	/**
	 * create a new context. Call close to finish using the execution context
	 */
	public ExecutionContext( )
	{
		this( null );
	}
	/**
	 * create a new context. Call close to finish using the execution context
	 */
	public ExecutionContext( EngineTask engineTask )
	{
		if ( engineTask != null )
		{
			task = engineTask;
			engine = task.getEngine( );
			log = task.getLogger( );
		}
		else