Bug 149251 Inconsistent Handling of a Non-inheritable ROM Property
For a ROM property defined to be non-inheritable, an empty string property value should be consistently handled as an empty string, not as null. For example, an oda.dataSource extension defines a data source property with canInherit=false. When a oda-data-source handle get saved in a report design, it correctly includes the tag for such property, even when an empty string value is specified. <oda-data-source extensionID="my.oda.plugin" name="my Data Source" id="24"> ... <property name="ApplicationServer"></property> </oda-data-source> However, later when using the DE API to read its property value, a null is returned. Then when the report design is subsequently saved, the property tag is lost. Expects that an empty string value of a non-inhertiable property should be preserved.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
triggerDefn.setValidator( validator );
			getTriggerDefnSet( ).add( triggerDefn );
		}
		
		List propList = getProperties( );
		Iterator iter = propList.iterator( );
		while ( iter.hasNext( ) )
		{
			PropertyDefn propDefn = (PropertyDefn) iter.next( );
			mergeTriggerDefnSet( propDefn.getTriggerDefnSet( ) );
		}
		
		int slotCount = getSlotCount( );
		for ( int i = 0; i < slotCount; i++ )
		{
			SlotDefn slotDefn = (SlotDefn) getSlot( i );
			mergeTriggerDefnSet( slotDefn.getTriggerDefnSet( ) );
		}
	}
	/**
	 * Merges the trigger definition set with the given one. The duplicate
	 * trigger and the trigger whose target is not this element definition will
	 * not be merged.
	 * 
	 * @param toMerge
	 *            the trigger definition set to merge
	 */
	private void mergeTriggerDefnSet( SemanticTriggerDefnSet toMerge )
	{
		List triggerDefns = toMerge.getTriggerList( );