Bug 180608 [Regression]NPE throws out when preview the result in dataset[07]
Description: [Regression]NPE throws out when preview the result in dataset[07] Build number: 2.2.0.v20070403-0630 Steps to reproduce: 1, Use attached report 2, Edit Data Set 3, Preview the Data Set Expected result: The preview should be success Actual result: NPE throws out Error log:
data/org.eclipse.birt.data.tests/test/org/eclipse/birt/data/engine/binding/FeaturesTest.java
};
		QueryDefinition queryDefn = this.createQuery( bindingNameGroup,
				bindingExprGroup,
				groupDefn,
				null,
				null,
				null,
				null,
				null,
				null,
				bindingNameRow,
				bindingExprRow );
		queryDefn.setUsesDetails( false );
		IResultIterator it = executeQuery( queryDefn );
		while ( it.next( ) )
		{
			int start1 = it.getStartingGroupLevel( );
			it.getEndingGroupLevel( );
			int start2 = it.getStartingGroupLevel( );
			assertEquals( start1, start2 );
		}
	}
	/**
	 * @param it
	 * @param keyValues
	 * @param restRowCount
	 * @throws DataException
	 * @throws BirtException
	 */
	private void testFindGroup( IResultIterator it, Object[] keyValues,