Bug 137464 apply a filter on a Join dataset in chart editor's select data page, the data preview part is not refresh
Description: use the attach file.When apply a filter on a Join dataaset in chart editor's select data page, the data preview part is not refresh. Step to reproduce: 1. open the attach file 2. creat a chart and choose select data page 3. use the Jiondataset and set the X Y series 4. chilck a filter with row["Data Set1::EMPLOYEEID"] =1 Actual result: look at the data preview after you apply the filter,you will find it haven't change any more but the filter has effect Ecepted result: the data preview should refresh after set a filter
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedJointDataSourceQuery.java
if ( doesLoadFromCache( ) == false )
				initialize( dataEngine, appContext );
			return new JointDataSetQuery( resultClass );
		}
		
		/*
		 * @see org.eclipse.birt.data.engine.impl.PreparedQuery.Executor#executeOdiQuery()
		 */
		protected org.eclipse.birt.data.engine.odi.IResultIterator executeOdiQuery(
				IEventHandler eventHandler ) throws DataException
		{
			if ( doesLoadFromCache( ) == true )
			{
				DataSourceQuery dsQuery = new DataSourceQuery( );
				dsQuery.setExprProcessor( new ExpressionProcessor( null,
						null,
						dataSet,
						null ) );
				return dsQuery.execute( eventHandler );
			}
			
			JointResultMetadata jrm = getJointResultMetadata( left, right );
			resultClass = jrm.getResultClass( );
			populator = JointDataSetPopulatorFactory.getBinaryTreeDataSetPopulator( left.getOdiResult( ),
					right.getOdiResult( ),
					jrm,
					matcher,
					joinType );
			
			if ( doesSaveToCache( ) == false )