Bug 179629 After create a x-tab with a cube, a error occurs in Problems sheet[1102]
Description: After create a x-tab with a cube, a error occurs in Problems sheet[1102] Build number: 2.2.0.v20070328-0630 Steps to reproduce: 1, Create a cube 2, Create a x-tab using the cube 3, Check the error message in Problems sheet Expected result: No error occurs after create a x-tab Actual result: The error message is "The ExtendedItem must be able to access one data set."
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/extension/ReportItemExtensionTest.java
}
	/**
	 * Tests the function of TestPeerElement and ExtendedItem to get/set
	 * property.
	 * 
	 * @throws Exception
	 */
	public void testExtension( ) throws Exception
	{
		openDesign( fileName );
		ExtendedItemHandle extendedHandle = (ExtendedItemHandle) designHandle
				.findElement( "right extended item" ); 
		assertNotNull( extendedHandle );
		try
		{
			extendedHandle.setProperty( ExtendedItem.EXTENSION_NAME_PROP,
					"TestingMatrix" ); 
			fail( );
		}
		catch ( PropertyValueException e )
		{
			assertEquals(