Bug 124067 When select the XML file, the relative path should be supported.
Description: When select the XML file, the relative path should be supported. Step to reproduce: 1. new a report 2. new a datasource and dataset based on a XML file 3. select the XML file, the file relative path should be used. Actual result: only the absolute path is supported. Expect result: the relative and absolute path are supported.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
/**
	 * Default constructor. Constructs an adaptor which uses no associated
	 * Javascript scope and no report context.
	 */
	public ModelDteApiAdapter( )
	{
	}
	/**
	 * Constructs an instance with the given report context and scope
	 * 
	 * @param context
	 *            Context for event handlers. May be null
	 * @param jsScope
	 *            Scope for evaluting property binding expressions. If null,
	 *            property bindings have no effect
	 */
	public ModelDteApiAdapter( ExecutionContext context, Scriptable jsScope )
	{
		this.context = context;
		this.jsScope = jsScope;
	}
	/**
	 * Adapts the specified Model Data Source to a Data Engine API data source
	 * design object
	 */
	public IBaseDataSourceDesign createDataSourceDesign(
			DataSourceHandle dataSource ) throws BirtException
	{
		if ( dataSource instanceof OdaDataSourceHandle )
			return newExtendedDataSource( ( OdaDataSourceHandle ) dataSource );