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
public TemplateParameterDefinition findTemplateParameterDefinition(
			String name )
	{
		return (TemplateParameterDefinition) resolveNativeElement( name,
				TEMPLATE_PARAMETER_NAME_SPACE );
	}
	/**
	 * Returns whether the namespace to check is duplicate in target module.
	 * This method helps to judge whether the library to check can be included
	 * in target module.
	 * 
	 * @param namespaceToCheck
	 *            the namespace to check
	 * @return true if the namespace to check is duplicate.
	 */
	public boolean isDuplicateNamespace( String namespaceToCheck )
	{
		Module rootHost = this;
		while ( rootHost instanceof Library
				&& ( (Library) rootHost ).getHost( ) != null )
			rootHost = ( (Library) rootHost ).getHost( );
		
		List libraries = rootHost
				.getLibraries( IModuleNameSpace.ARBITARY_LEVEL );
		Iterator iter = libraries.iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			if ( library.getNamespace( ).equals( namespaceToCheck ) )
				return true;