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/DesignElement.java
|| tmpContainer instanceof MasterPage )
			{
				errors = tmpContainer.checkContent( module, this, slotId,
						element );
				return errors;
			}
			tmpContainer = tmpContainer.getContainer( );
		}
		return Collections.EMPTY_LIST;
	}
	/**
	 * Checks whether the root of the current element is included by
	 * report/library.
	 * 
	 * @return <code>true</code> if the root of the current element is
	 *         included by report/library. Otherwise <code>false</code>.
	 */
	private boolean isRootIncludedByModule( )
	{
		DesignElement tmpContainer = getRoot( );
		if ( tmpContainer instanceof Library
				&& ( (Library) tmpContainer ).getHost( ) != null )
		{
			return true;
		}
		return false;
	}
	/**
	 * Determines if the current element can contain an element with the
	 * definition of <code>elementType</code> on context containment.