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
assert extDataSet != null;
			assert odiDataSource != null;
			
			IDataSourceQuery odiQuery = null;
			String dataSetType = extDataSet.getExtensionID( );
			String dataText = extDataSet.getQueryText( );
			odiQuery = odiDataSource.newQuery( dataSetType, dataText );
			return odiQuery;
	 	}
		
		
		/*
		 * @see org.eclipse.birt.data.engine.impl.PreparedQuery.Executor#populateOdiQuery()
		 */
		protected void populateOdiQuery( ) throws DataException
		{
			super.populateOdiQuery( );
			
			OdaDataSetRuntime extDataSet = (OdaDataSetRuntime) dataSet;
			assert extDataSet != null;
			
			IDataSourceQuery odiDSQuery = (IDataSourceQuery) odiQuery;
			assert odiDSQuery != null;
			
			
		    addProperty( odiDSQuery, extDataSet.getPublicProperties() );
		    addProperty( odiDSQuery, extDataSet.getPrivateProperties() );
		   
     		
		    odiDSQuery.setParameterHints(