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
{
			if ( OPERATOR[i][1].equals( value ) )
			{
				return i;
			}
		}
		return 0;
	}
	private HighlightRuleHandle handle;
	private HighlightHandleProvider provider;
	private int handleCount;
	protected Combo expression, stylesChooser;
	private Combo operator;
	
	protected Composite valueListComposite;
	protected Combo addExpressionValue;
	protected Button addBtn, editBtn, delBtn, delAllBtn;
	protected Table table;
	protected TableViewer tableViewer;
	protected int valueVisible;
	protected List compositeList = new ArrayList( );
	
	private Combo expressionValue1, expressionValue2;
	private Label andLable;
	private Combo font;
	private FontSizeBuilder size;
	private ColorBuilder color;
	private ColorBuilder backColor;
	private Button bold, italic, underline, linethrough;
	private PreviewLabel previewLabel;