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/core/Module.java
if ( element.getID( ) <= NO_ID
					|| ( getElementByID( element.getID( ) ) != null && getElementByID( element
							.getID( ) ) != element ) )
			{
				element.setID( getNextID( ) );
				assert getElementByID( element.getID( ) ) == null;
			}
			if ( getElementByID( element.getID( ) ) == null )
				addElementID( element );
		}
		else
		{
			dropElementID( element );
		}
		for ( int i = 0; i < defn.getSlotCount( ); i++ )
		{
			ContainerSlot slot = element.getSlot( i );
			if ( slot == null )
				continue;
			for ( int pos = 0; pos < slot.getCount( ); pos++ )
			{
				DesignElement innerElement = slot.getContent( pos );
				manageId( innerElement, isAdd );
			}
		}
	}
	/**
	 * Gets the location information of the module.
	 *