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
expgd.widthHint = 100;
		addExpressionValue = new Combo( group, SWT.NONE );
		addExpressionValue.setLayoutData( expgd );
		addBtn = new Button( group, SWT.PUSH );
		addBtn.setText( Messages.getString( "FilterConditionBuilder.button.add" ) );
		addBtn.setToolTipText( Messages.getString( "FilterConditionBuilder.button.add.tooltip" ) );
		setButtonLayoutData( addBtn );
		addBtn.addSelectionListener( new SelectionListener( ) {
			public void widgetDefaultSelected( SelectionEvent e )
			{
				
			}
			public void widgetSelected( SelectionEvent e )
			{
				
				String value = addExpressionValue.getText( ).trim( );
				if ( valueList.indexOf( value ) < 0 )
				{
					valueList.add( value );
					tableViewer.refresh( );
					updateButtons( );
					addExpressionValue.setFocus( );
					addExpressionValue.setText( "" );
				}
				else
				{
					addBtn.setEnabled( false );
				}
			}
		} );