Pattern - Structured Discriminator (1-out-of-M Join - Recurrent) 1 true 2 true http://www.gridworkflow.org/gworkflowdl/images/exec.png http://www.gridworkflow.org/gworkflowdl/images/exec.png 1 http://www.gridworkflow.org/gworkflowdl/images/exec.png 0