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
* <code>SemanticException</code>.
	 */
	protected List errors;
	/**
	 * The set of slots for the design element. If the design element has no
	 */
	protected ContainerSlot slots[] = null;
	/**
	 * Support for id inheritance. If it is set, base id must be larger than
	 * <code>0</code>.
	 */
	protected long baseId = NO_BASE_ID;
	/**
	 * Default constructor.
	 */
	public DesignElement( )
	{
		
	}
	/**
	 * Constructs the design element with the name.
	 * 
	 * @param theName
	 *            initial element name
	 */
	public DesignElement( String theName )
	{
		name = theName;
	}
	/**