Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
{
			
			dataHandle.setDataSet( dataSet );
		}
		InsertInLayoutRule rule = new LabelAddRule( target );
		if ( rule.canInsert( ) )
		{
			
			
			
			
			LabelHandle label = DesignElementFactory.getInstance( )
					.newLabel( null );
			label.setText( model.getDisplayName( ) );
			rule.insert( label );
		}
		rule = new GroupKeySetRule( target, model );
		if ( rule.canInsert( ) )
		{
			rule.insert( model );
		}
		return dataHandle;
	}
	/**
	 * Inserts invalid column string into the target. Add label if possible
	 * 
	 * @param expression
	 *            invalid column or other expression
	 * @param target
	 *            insert target like cell or ListBandProxy