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/api/ModuleHandle.java
* @param name
	 *            the config variable name
	 * @return the index ( from 0 ) of config variable with the given name.
	 *         Return -1, if not found.
	 * 
	 */
	private int findConfigVariablePos( String name )
	{
		List configVars = (List) module.getLocalProperty( module,
				CONFIG_VARS_PROP );
		if ( configVars == null )
			return -1;
		int i = 0;
		for ( Iterator iter = configVars.iterator( ); iter.hasNext( ); i++ )
		{
			ConfigVariable var = (ConfigVariable) iter.next( );
			if ( var.getName( ).equals( name ) )
			{
				return i;
			}
		}
		return -1;
	}
	/**
	 * Finds a data set by name in this module and the included modules.
	 * 
	 * @param name
	 *            name of the data set
	 * @return a handle to the data set, or <code>null</code> if the data set
	 *         is not found