Bug 168148 [regression]Table with chart from library fails to preview.[01][0001]
Description: Table with chart from library fails to preview. Build number:2.1.2.v20061215 and 2.2.0.v20061213 Steps to reproduce: 1.Create a library, create a sample DB data source and data set: select * from orders 2.Insert a tabel to the library, bind data set to the table 3.Insert a group for the tabel ,group by "row["OrderDate"]", Interval: Year, Range:1 4.Drag a chart into 3rd cell on group row, bar chart, go to "Select Data" tab , bind data set, X Series:row["OrderDate"], Y Series:row["OrderNumger"]; click "Finish" button 5.Create a new report, use the library 6.Drag the table in the library to the report. 7.Preview in html. Expected Result: Report content displays without errors. Actual result: Error happened while running the report.(same for 2.1.2 and 2.2.0) Error log: org.eclipse.birt.report.service.api.ReportServiceException: Error happened while running the report
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/extension/PeerExtensibilityProvider.java
{
		if ( reportItem != null )
		{
			IPropertyDefinition[] extProps = reportItem
					.getPropertyDefinitions( );
			if ( extProps != null )
			{
				for ( int i = 0; i < extProps.length; i++ )
				{
					IPropertyDefinition extProp = extProps[i];
					assert extProp != null;
					if ( propName.equals( extProp.getName( ) ) )
						return true;
				}
			}
		}
		return false;
	}
	/**
	 * Tests whether the property is the extension property which holds the
	 * serialized XML value for extension model properties. The property type
	 * should be XML.
	 * 
	 * @param propName
	 *            name of the property to check
	 * @return true if the property is XML type and holds the serialized XML
	 *         value for extension model properties, otherwise false
	 */
	public boolean isExtensionXMLProperty( String propName )
	{