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
* 
	 * @param theLocation
	 *            the location path to find
	 * @return the library with the given location path if found, otherwise null
	 */
	public Library getLibraryByLocation( String theLocation )
	{
		
		if ( StringUtil.isBlank( theLocation ) )
			return null;
		
		
		List libraries = getLibraries( );
		for ( int i = 0; i < libraries.size( ); i++ )
		{
			Library library = (Library) libraries.get( i );
			if ( theLocation.equalsIgnoreCase( library.getLocation( ) ) )
				return library;
		}
		
		return null;
	}
	/**
	 * Finds a template parameter definition by name in this module and the
	 * included modules.
	 * 
	 * @param name
	 *            name of the template parameter definition to find
	 * @return the template parameter definition, if found, otherwise null.
	 */