sources.put( "lhs", sourceLhs );
sources.put( "rhs", sourceRhs );
Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "joinsintocogrouplhsswappedjoin" ), SinkMode.REPLACE );
Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );
Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );
Pipe pipeUpper = new Each( new Pipe( "upper" ), new Fields( "line" ), splitter );
Pipe pipeLhs = new Each( new Pipe( "lhs" ), new Fields( "line" ), splitter );