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
*/
	public void setID( long newID )
	{
		id = newID;
	}
	/**
	 * Returns the unique element ID. The ID will be valid only if element IDs
	 * were enabled in the MetaDataDictionary.
	 * 
	 * @return The unique ID. Returns 0 if element IDs are not enabled.
	 */
	public long getID( )
	{
		return this.id;
	}
	/**
	 * Determines if this element is contained in the given element. Checks up
	 * the containment hierarchy.
	 * 
	 * @param element
	 *            The potential container.
	 * @return True if this element is contained in the container either
	 *         directly or indirectly. False if this element is not contained.
	 *         If the given element is this element itself, return true.
	 */
	public boolean isContentOf( DesignElement element )
	{
		DesignElement e = this;
		while ( e != null )
		{