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
String lingthroughValue = linethrough.getSelection( ) ? DesignChoiceConstants.TEXT_LINE_THROUGH_LINE_THROUGH
					: DesignChoiceConstants.TEXT_LINE_THROUGH_NONE;
			
			
			if ( handle == null )
			{
				HighlightRule rule = StructureFactory.createHighlightRule( );
				rule.setProperty( HighlightRule.OPERATOR_MEMBER,
						DEUtil.resolveNull( getValueForOperator( operator.getText( ) ) ) );
				if ( valueVisible == 3 )
				{
					rule.setValue1( valueList );
					rule.setValue2( "" );
				}
				else
				{
					if ( expressionValue1.isVisible( ) )
					{
						rule.setProperty( MapRule.VALUE1_MEMBER,
								DEUtil.resolveNull( expressionValue1.getText( ) ) );
					}
					if ( expressionValue2.isVisible( ) )
					{
						rule.setProperty( MapRule.VALUE2_MEMBER,
								DEUtil.resolveNull( expressionValue2.getText( ) ) );
					}
				}
				
				rule.setTestExpression( DEUtil.resolveNull( expression.getText( ) ) );