Bug 187445 The joint result of script computed column is incorrect[07]
Description: 1, Each dataset including a computed column: name: index; type:integer; expression:0 2, Specify the script of datasets to: beforeOpen: index=0; onFetch: row["index"] = index; index++; 3, Join the two datasets Build number: 2.2.0.v20070516-0630 Steps to reproduce: 1, open the attached report design 2, open the joint dataset and preview Actual result: The result of column Data "Set1::index" is all 0 but no value 1.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/executor/transform/pass/DataSetProcessUtil.java
for ( int j = offset; j < args.size( )+offset; j++ )
				{
					exprs[j] = (IBaseExpression) args.get( j - offset );
				}
				for ( int j = 0; j < exprs.length; j++ )
				{
					if ( exprs[j] instanceof IScriptExpression )
					{
						IScriptExpression scriptExpr = (IScriptExpression) exprs[j];
						if ( scriptExpr.getText( ) == null )
							continue;
					}
					compiler.compile( exprs[j], cx );
				}
				if ( cc.getAggregateFilter( )!= null )
					compiler.compile( cc.getAggregateFilter( ), cx );
				IAggregation aggrFunction = AggregationFactory.getInstance( )
						.getAggregation( cc.getAggregateFunction( ) );
				IAggrInfo aggrInfo = new AggrInfo( cc.getName( ),
						0,
						aggrFunction,
						exprs,
						cc.getAggregateFilter( ) );
				aggrInfos.add( aggrInfo );
				aggrNames.add( cc.getName( ) );
			}
			
			if ( !psController.needDoOperation( PassStatusController.DATA_SET_FILTERING ) )
				PassUtil.pass( populator,
						new OdiResultSetWrapper( populator.getResultIterator( ) ),