Bug 145520 Group name will not show up in group list if the group use default name and key expression has no value
Description: Group name will not show up in group list if key expression has no value. Steps to reproduce: 1. Insert a table into report, bind it to a data set 2. Switch to property editor -> groups 3. Click on add button to open new group dialog, then press ok button Expected result: A new group with default name will be added to group list Actual result: A new group is added to group list, but without group name. But when let group tab lost focus and get focus again, you can see the group name.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
else
			module.theme = null;
		
		if ( libraries != null )
		{
			for ( int i = 0; i < libraries.size( ); i++ )
			{
				module.libraries = new ArrayList( );
				Library lib = (Library) ( (Library) libraries.get( i ) )
						.doClone( policy );
				lib.setHost( module );
				module.libraries.add( lib );
			}
		}
		else
			module.libraries = null;
		
		IElementDefn defn = module.getDefn( );
		for ( int i = 0; i < defn.getSlotCount( ); i++ )
		{
			ContainerSlot slot = module.getSlot( i );
			if ( slot == null )
				continue;
			for ( int pos = 0; pos < slot.getCount( ); pos++ )
			{
				DesignElement innerElement = slot.getContent( pos );
				buildNameSpaceAndIDMap( module, innerElement );
			}
		}