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
sortExpression = condition.getRightExpression( );
		}
		SortDefinition sort = new SortDefinition( );
		sort.setExpression( sortExpression.getText( ) );
		preparedQuery.getReportQueryDefn( ).getSorts( ).add( sort );
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.impl.PreparedDataSourceQuery#newExecutor()
	 */
	protected QueryExecutor newExecutor( )
	{
		return new JointDataSetQueryExecutor( );
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.api.IPreparedQuery#getParameterMetaData()
	 */
	public Collection getParameterMetaData( ) throws BirtException
	{
		return null;
	}
	 /**
     * 
	 * Concrete class of DSQueryExecutor used in PreparedExtendedDSQuery
	 * 
	 */
	private class JointDataSetQueryExecutor extends DSQueryExecutor
	{