Bug 121273 Script modification of style properties does not work for data item
Create a report with a lable and a data item. In the onCreate method for both items, put this.style.color="red" The label item works, but the data item does not.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/DataEngineImpl.java
DataSetCacheManager.getInstance( )
					.setAlwaysCacheRowCount( context.getCacheCount( ) );
		}
		else if ( cacheOption == DataEngineContext.CACHE_USE_DISABLE )
		{
			DataSetCacheManager.getInstance( )
					.setCacheOption( DataSetCacheManager.DISABLE );
		}
		else if ( appContext != null )
		{
			Object option = appContext.get( DataEngine.DATASET_CACHE_OPTION );
			if ( option != null && option.toString( ).equals( "true" ) )
				DataSetCacheManager.getInstance( )
						.setCacheOption( DataSetCacheManager.DEFAULT );
			else
				DataSetCacheManager.getInstance( )
						.setCacheOption( DataSetCacheManager.DISABLE );
		}
		else
		{
			DataSetCacheManager.getInstance( )
					.setCacheOption( DataSetCacheManager.DISABLE );
		}
	}
	
	/**
	 * Provides a hint to DtE that the consumer is done with the given 
	 * data source connection, and 
	 * that its resources can be safely released as appropriate.
	 * This tells DtE that there is no more ReportQuery