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
}
	/**
	 * Insert a text string into the text area
	 * 
	 * @param text
	 */
	private void insertText( String text )
	{
		StyledText textWidget = viewer.getTextWidget( );
		int selectionStart = textWidget.getSelection( ).x;
		textWidget.insert( text );
		textWidget.setSelection( selectionStart + text.length( ) );
		textWidget.setFocus( );
	}
	{
	}
	/**
	 * Creates the textual query editor 
	 * @param parent
	 */
	private void createTextualQueryComposite( Composite parent )
	{
		
        Composite composite = new Composite(parent, SWT.FILL);
        GridLayout layout = new GridLayout();
        layout.numColumns = 1;
        composite.setLayout(layout);
        
		CompositeRuler ruler = new CompositeRuler( );
		LineNumberRulerColumn lineNumbers = new LineNumberRulerColumn( );