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 name
	 *            The parameter name.
	 * @return The parameter, if found, otherwise null.
	 */
	public DesignElement findParameter( String name )
	{
		return resolveNativeElement( name, PARAMETER_NAME_SPACE );
	}
	/**
	 * Gets a name space.
	 * 
	 * @param ns
	 *            The name space ID.
	 * @return The name space.
	 */
	public NameSpace getNameSpace( int ns )
	{
		assert ns >= 0 && ns < NAME_SPACE_COUNT;
		return nameSpaces[ns];
	}
	/**
	 * Returns the module name space instance for the given name space in this
	 * module.
	 * 
	 * @param nameSpace
	 *            the name space ID
	 * @return the module name space for the given name space
	 */
	public IModuleNameSpace getModuleNameSpace( int nameSpace )
	{