private void writeOutput(OutputNode node, PrintWriter pw) throws GraphException {
String id = node.getID();
Port port = node.getPort();
Node fromNode = port.getFromNode();
if (fromNode == null) {
throw new GraphException("Output parameter has to be connected to some node.");
}
Port fromPort = port.getFromPort();
if (fromNode instanceof InputNode) {
// The OutputNode is directly connected to an InputNode.
pw.println(
TAB
+ id
+ VALUE_SUFFIX
+ " = "
+ PROPERTIES_VARIABLE
+ "."
+ GET_PROPERTY_METHOD
+ "('"
+ fromNode.getID()
+ "')");
} else {
pw.println(TAB + "# Wait output " + id);
pw.println(
TAB
+ id
+ VALUE_SUFFIX
+ " = "
+ fromNode.getID()
+ INVOKER_SUFFIX
+ "."
+ GET_OUTPUT_METHOD
+ "('"
+ fromPort.getName()
+ "')");
}
pw.println(TAB + "print '" + id + " = ', " + id + VALUE_SUFFIX);
// This might try to remove a node that has been removed
// already, but it's OK.
this.executingNodes.remove(fromNode);
pw.println();
}
/** @param pw */
private void writeFooter(PrintWriter pw) {
// Send a COMPLETE_WORKFLOW notification.
pw.println(TAB + NOTIFICATION_VARIABLE + "." + WORKFLOW_COMPLETED_METHOD + "(");
boolean first = true;
for (OutputNode node : this.outputNodes) {
if (first) {
first = false;
} else {
pw.println(",");
}
String id = node.getID();
pw.print(TAB + TAB + id + "=" + id + VALUE_SUFFIX);
}
pw.println(")");
pw.println(TAB + "print 'Everything is done successfully.'");
pw.println();
pw.println("except Throwable, e:");
pw.println(TAB + "print 'Error: ', e");
pw.println(TAB + NOTIFICATION_VARIABLE + "." + WORKFLOW_INCOMPLETED_METHOD + "(e)");
}