Bug 212375 [Automation][Regression]Exception occurs when preview a outputParams["xxx"]
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedDataSourceQuery.java
}
	
	/**
	 * @param dataEngine
	 * @param baseQueryDefn
	 * @param queryDefn
	 * @param dataSetDesign
	 * @param appContext
	 * @throws DataException
	 */
	PreparedDataSourceQuery( DataEngineImpl dataEngine,
			IBaseQueryDefinition baseQueryDefn, IQueryDefinition queryDefn,
			IBaseDataSetDesign dataSetDesign,
			Map appContext )
			throws DataException
	{
		Object[] params = {
				dataEngine, baseQueryDefn, queryDefn, dataSetDesign, appContext
		};
		logger.entering( PreparedDataSourceQuery.class.getName( ),
				"PreparedDataSourceQuery",
				params );
		this.dataSetDesign = dataSetDesign;
		this.queryDefn = queryDefn;
		this.dataEngine = dataEngine;
		this.appContext = appContext;
		
		preparedQuery = new PreparedQuery( dataEngine.getSession( ), dataEngine.getContext( ),
				baseQueryDefn,
				this,