Bug 134988 [regression]Available items in Query didn't change when change data source in Edit Data Set Dialog.
Description: Available items in Query didn't change when change data source in Edit Data Set Dialog. Steps to reproduce: 1. New two different data sources. 2. New a dataset, change data source, view Available Items in Query pane. Expected result: Available Items in Query pane changed according to new Data source. Actual result: Available Items in Query pane kept unchanged.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
ruler.addDecorator( 0, lineNumbers );
		viewer = new SourceViewer( composite, ruler, SWT.H_SCROLL
				| SWT.V_SCROLL );
		sourceViewerConfiguration = new JdbcSQLSourceViewerConfiguration( this.getDataSetDesign( ) );
		viewer.configure( sourceViewerConfiguration );
		
		doc = new Document( getQueryText() );
		FastPartitioner partitioner = new FastPartitioner( new SQLPartitionScanner( ),
				new String[]{
						SQLPartitionScanner.SINGLE_LINE_COMMENT1,
						SQLPartitionScanner.SINGLE_LINE_COMMENT2,
						SQLPartitionScanner.MULTI_LINE_COMMENT,
						IDocument.DEFAULT_CONTENT_TYPE
				} );
		partitioner.connect( doc );
		doc.setDocumentPartitioner( partitioner );
		viewer.setDocument( doc );
		viewer.getTextWidget( ).setFont( JFaceResources.getTextFont( ) );
		attachMenus( viewer );
        
        GridData data = new GridData(GridData.FILL_BOTH);
        viewer.getControl().setLayoutData(data);
        
        
        addDropSupportToViewer();
        
        if(isExternalEditorConfigured())
        {
            Button btnExternalEditor = new Button(composite, SWT.NONE);
            btnExternalEditor.setText("Edit with external editor");