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/api/ModuleHandle.java
/**
	 * Drops the given library from the design and break all the parent/child
	 * relationships. All child element will be localized in the module.
	 * 
	 * @param library
	 *            the given library to drop
	 * @throws SemanticException
	 *             if errors occured when drop the library.It may be because
	 *             that the library is not found in the design or that some
	 *             elements can not be localized properly.
	 */
	public void dropLibraryAndBreakExtends( LibraryHandle library )
			throws SemanticException
	{
		if ( library == null )
			return;
		LibraryCommand command = new LibraryCommand( module );
		command.dropLibraryAndBreakExtends( (Library) library.getElement( ) );
	}
	/**
	 * Adds one attribute listener. The duplicate listener will not be added.
	 * 
	 * @param listener
	 *            the attribute listener to add
	 */
	public void addAttributeListener( IAttributeListener listener )
	{
		getModule( ).addAttributeListener( listener );
	}
	/**