sources.put( "upper", sourceUpper );
sources.put( "offset", sourceLowerOffset );
Tap sink = getPlatform().getDelimitedFile( Fields.ALL, "\t", getOutputPath( "simplemergethree" ), 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 pipeOffset = new Each( new Pipe( "offset" ), new Fields( "line" ), splitter );