Bug 153040 Template definition should be removed after the report item is deleted
Steps to reproduce: 1.New a report, extends lib.label 2.Convert the label to template report item, and revert it back to the report item 3.Delete the label 4.Remove the included library Expected result: Library can be removed Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.v20060808-0630 Error Code:Error.LibraryException.LIBRARY_HAS_DESCENDENTS Error Message:The library "Lib" can no be dropped because it has descendents "NewLabel" in the current module.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentCommand.java
Object value = element.getLocalProperty( module,
						(ElementPropertyDefn) propDefn );
				if ( value != null )
				{
					if ( ( value instanceof StructRefValue )
							|| ( (ElementRefValue) value ).isResolved( ) )
					{
						try
						{
							
							
							PropertyCommand cmd = new PropertyCommand( module,
									element );
							cmd.setProperty( propDefn.getName( ), null );
						}
						catch ( SemanticException e )
						{
							assert false;
						}
					}
				}
			}
			else if ( propDefn.getTypeCode( ) == PropertyType.LIST_TYPE
					&& propDefn.getSubTypeCode( ) == PropertyType.ELEMENT_REF_TYPE )
			{
				List valueList = (List) element.getLocalProperty( module,
						(ElementPropertyDefn) propDefn );
				if ( valueList != null )
				{
					for ( int i = valueList.size( ) - 1; i >= 0; i-- )