Bug 204229 [Automation][Regression]Exception is thrown when preview reportdesign in webviewer
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/document/RDSave.java
int[] subQueryInfo ) throws DataException
	{
		this.rdSaveUtil.saveResultIterator( odiResult, groupLevel, subQueryInfo );
	}
	
	/**
	 * @return
	 */
	private Set getExprNameSet( )
	{
		Set set = new HashSet( );
		Iterator it = this.queryDefn.getBindings( )
				.entrySet( )
				.iterator( );
		while ( it.hasNext( ) )
		{
			Map.Entry entry = (Map.Entry) it.next( );
			set.add( entry.getKey( ) );
		}
		return set;
	}
	public void saveStart( ) throws DataException
	{
		if ( this.streamManager.isSubquery( ) == false )
			this.rdSaveUtil.saveQueryDefn( );
		
	}
	
}