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
private String getFontFamily( )
	{
		String rfm = getRawFontFamily( );
		if ( rfm == null )
		{
			if ( designHandle != null )
			{
				if ( designHandle instanceof StyleHandle )
				{
					rfm = ( (StyleHandle) designHandle ).getFontFamilyHandle( )
							.getStringValue( );
				}
				else
				{
					rfm = designHandle.getPrivateStyle( )
							.getFontFamilyHandle( )
							.getStringValue( );
				}
			}
			else
			{
				rfm = DesignChoiceConstants.FONT_FAMILY_SERIF;
			}
		}
		return HighlightHandleProvider.getFontFamily( rfm );
	}
	private String getRawFontFamily( )
	{
		String ftName = font.getText( );
		IChoiceSet cs = (IChoiceSet) font.getData( );