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
* Each in the returned list is the instance of <code>LibraryHandle</code>.
	 * 
	 * @return the libraries this report design includes directly or indirectly.
	 */
	public List getAllLibraries( )
	{
		return getLibraries( IModuleNameSpace.ARBITARY_LEVEL );
	}
	/**
	 * Returns included libaries this report design includes directly or
	 * indirectly within the given depth.
	 * 
	 * @param level
	 *            the given depth
	 * @return list of libraries.
	 */
	protected List getLibraries( int level )
	{
		List libraries = module.getLibraries( level );
		List retLibs = new ArrayList( );
		Iterator iter = libraries.iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			retLibs.add( library.handle( ) );
		}
		return Collections.unmodifiableList( retLibs );
	}
	/**
	 * Returns the libraries this report design includes directly. Each in the