Bug 180408 After correct the expression of dimension, NPE throws out and the x-tab can not be previewed anymore[1102]
Description: After correct the expression of level, NPE throws out and the x-tab can not be previewed anymore[1102] Build number: 2.2.0.v20070402-0630 Steps to reproduce: 1, New a cube with two report design 2, New a x-tab using the cube 3, Change the level's name to CUSTOMER_REGION1 4, Preview the report 5, Correct the expression in x-tab: dimension["Customer"]["CUSTOMER_REGION1"] 6, Preview the report Expected result: After step4, the report can not be previewed but not shown up the NPE message After step5 and 6, the report can be previewed successfully Actual result: After step4, NPE pops up After step6, NPE still pops up Error log:
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataSetIterator.java
}
			}
		}
		this.metadata = new ResultMeta( resultMetaList );
	}
	/**
	 * 
	 * @param query
	 * @param resultMetaList
	 * @param levelNameColumnNamePair
	 * @param hierHandle
	 */
	private void prepareLevels( QueryDefinition query, List resultMetaList,
			Map levelNameColumnNamePair, TabularHierarchyHandle hierHandle )
	{
		
		List levels = hierHandle.getContents( TabularHierarchyHandle.LEVELS_PROP );
		for ( int j = 0; j < levels.size( ); j++ )
		{
			TabularLevelHandle level = (TabularLevelHandle) levels.get( j );
			ColumnMeta temp = new ColumnMeta( level.getName( ) );
			resultMetaList.add( temp );
			levelNameColumnNamePair.put( level.getColumnName( ), temp );
			Iterator it = level.attributesIterator( );
			while ( it.hasNext( ) )
			{
				LevelAttributeHandle levelAttr = (LevelAttributeHandle) it.next( );
				ColumnMeta meta = new ColumnMeta( level.getName( )
						+ "/" + levelAttr.getName( ) );
				meta.setDataType( ModelAdapter.adaptModelDataType( levelAttr.getDataType( ) ) );