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
{
		return it.getValue( this.metadata == null ? it.getResultMetaData( )
				.getColumnName( fieldIndex )
				: this.metadata.getFieldName( fieldIndex ) );
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.olap.api.cube.IDatasetIterator#next()
	 */
	public boolean next( ) throws BirtException
	{
		if ( it.getQueryResults( )
				.getPreparedQuery( )
				.getReportQueryDefn( )
				.getGroups( )
				.size( ) == 0 )
			return it.next( );
		if ( !started )
		{
			started = true;
			return it.next( );
		}
		else
		{
			it.skipToEnd( it.getQueryResults( )
					.getPreparedQuery( )
					.getReportQueryDefn( )
					.getGroups( )
					.size( ) );
			return it.next( );