Bug 209126 DataException throws out when set highlight condition in sub-report[0302]
Description: Set highlight condition in sub-report, when "select value..." in the highlight dialog, DataException throws out. Build version:2.3.0.v20071108-0800 Steps to reproduce: 1.Get the attached report design file, which contains a sub-report. 2.Select the inner table, and then go to "highlight" tab in the property editor view to set a highlight rule. When click "select value...", DataException throws out. Error: The expression's value can not be retrieved. An error happened in data type conversion. Can not convert the value of org.eclipse.birt.data.engine.script.DataExceptionMocker@79c17b to Integer type.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HighlightRuleBuilder.java
* @return highlight rule handle.
	 */
	public HighlightRuleHandle getHandle( )
	{
		return handle;
	}
	private Text createText( Composite parent )
	{
		Text txt = new Text( parent, SWT.BORDER );
		GridData gdata = new GridData( GridData.FILL_HORIZONTAL );
		gdata.widthHint = 100;
		txt.setLayoutData( gdata );
		return txt;
	}
	private void fillStyles( Combo stylesChooser )
	{
		stylesChooser.removeAll( );
		styles.clear( );
		stylesChooser.add( NONE_DISPLAY_TEXT );
		for ( Iterator iter = DEUtil.getStyles( ); iter.hasNext( ); )
		{
			StyleHandle styleHandle = (StyleHandle) iter.next( );
			if ( styleHandle.isPredefined( ) )
			{
				continue;
			}
			String styleName = styleHandle.getName( );
			stylesChooser.add( styleName );
			styles.put( styleName, styleHandle );
		}