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
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			}
		} );
	}
    
    private final boolean isExternalEditorConfigured()
    {
    	return false;
 
    }
	private final void attachMenus( SourceViewer viewer )
	{
		StyledText widget = viewer.getTextWidget( );
		MenuManager manager = new MenuManager( );
		Separator separator = new Separator( "undo" );
		manager.add( separator );
		separator = new Separator( "copy" );
		manager.add( separator );
		separator = new Separator( "select" );
		manager.add( separator );
		manager.appendToGroup( "undo", getAction( "undo", viewer, JdbcPlugin.getResourceString( "sqleditor.action.undo" ), ITextOperationTarget.UNDO ) );
		manager.appendToGroup( "undo", getAction( "redo", viewer, JdbcPlugin.getResourceString( "sqleditor.action.redo" ), ITextOperationTarget.REDO ) );
		manager.appendToGroup( "copy", getAction( "cut", viewer, JdbcPlugin.getResourceString( "sqleditor.action.cut" ), ITextOperationTarget.CUT ) );
		manager.appendToGroup( "copy", getAction( "copy", viewer, JdbcPlugin.getResourceString( "sqleditor.action.copy" ), ITextOperationTarget.COPY ) );
		manager.appendToGroup( "copy", getAction( "paste", viewer, JdbcPlugin.getResourceString( "sqleditor.action.paste" ), ITextOperationTarget.PASTE ) );
		manager.appendToGroup( "select", getAction( "selectall", viewer, JdbcPlugin.getResourceString( "sqleditor.action.selectAll" ), ITextOperationTarget.SELECT_ALL ) );
		Menu menu = manager.createContextMenu( widget );
		manager.addMenuListener( new IMenuListener( ) {
			public void menuAboutToShow( IMenuManager manager )
			{