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.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/property/AbstractPropertyDialog.java
/**
	 * Called when the user pressed the Ok button. It is called only if all the
	 * pages return true for their individual
	 * {@link org.eclipse.birt.report.designer.data.ui.property.IPropertyPage#performOk() performOk}
	 * methods. Derived classes can save the contents of the dialog and perform
	 * any validation if necessary on the contents. <br/>The dialog is closed if
	 * this method returns true.
	 * 
	 * @return boolean indicating whether the method was successful or not.
	 */
	public abstract boolean performOk( );
	/**
	 * Called when the user presses the Cancel button. It is called only if all
	 * the pages return true for their individual
	 * {@link org.eclipse.birt.report.designer.data.ui.property.IPropertyPage#performCancel() performCancel()}
	 * methods. <br/>The dialog is closed if this method returns true.
	 * 
	 * @return boolean indicating whether the method was successful or not.
	 */
	public abstract boolean performCancel( );
	private final void performHelp( )
	{
		
		if ( currentNode != null )
		{
			currentNode.getPage( ).performHelp( );
		}
	}
	/*
	 * (non-Javadoc)