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
this.baseId = baseId;
	}
	/**
	 * @return Returns the idRef.
	 */
	public long getBaseId( )
	{
		return baseId;
	}
	/**
	 * Clears local properties of the element.
	 */
	public void clearAllProperties( )
	{
		this.name = null;
		this.extendsRef = null;
		propValues.clear( );
	}
	/**
	 * Determines whether this element and its contents are managed by
	 * namespace. If this element is a pending node and not in any module, or it
	 * is contained in a slot that is not managed by namespace, then return
	 * false. Otherwise true.
	 * 
	 * @param slotID
	 *            the slot ID in this element
	 * @return true if this element and its contents are managed by namespace,
	 *         otherwise false
	 */
	public boolean isManagedByNameSpace( int slotID )