Bug 212375 [Automation][Regression]Exception occurs when preview a outputParams["xxx"]
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedOdaDSQuery.java
}
			}
				
			
	        odiDSQuery.setResultProjection( getReportQueryDefn().getColumnProjection() );
			
		}
		/*
		 * @see org.eclipse.birt.data.engine.impl.PreparedQuery.Executor#executeOdiQuery()
		 */
		protected IResultIterator executeOdiQuery( IEventHandler eventHandler, StopSign stopSign )
				 throws DataException
		{
			dataSet.afterOpen();
			OdaDataSetRuntime odaDataSet = (OdaDataSetRuntime) dataSet;
			assert odaDataSet != null;
			
			assert odiPreparedQuery != null;
			return odiPreparedQuery.execute( eventHandler, stopSign );			
		}
		
		/*
		 * @see org.eclipse.birt.data.engine.impl.PreparedQuery.Executor#prepareOdiQuery()
		 */
		protected void prepareOdiQuery( ) throws DataException
		{
			IDataSourceQuery odiDSQuery = (IDataSourceQuery) odiQuery;
			assert odiDSQuery != null;
		    
			assert odiPreparedQuery == null;