Package org.rossonet.ext.picocli

Class CommandLine.RunLast

  • All Implemented Interfaces:
    CommandLine.IExecutionStrategy, CommandLine.IParseResultHandler, CommandLine.IParseResultHandler2<java.util.List<java.lang.Object>>
    Enclosing class:
    CommandLine
    public static class CommandLine.RunLast
extends CommandLine.AbstractParseResultHandler<java.util.List<java.lang.Object>>
implements CommandLine.IParseResultHandler
    Command line execution strategy that prints help if requested, and otherwise executes the most specific Runnable or Callable subcommand. For use by the execute method.

    Something like this: 

    
 // RunLast implementation: print help if requested, otherwise execute the
 // most specific subcommand
 List<CommandLine> parsedCommands = parseResult.asCommandLineList();
 if (CommandLine.printHelpIfRequested(parsedCommands, out(), err(), ansi())) {
 	return emptyList();
 }
 CommandLine last = parsedCommands.get(parsedCommands.size() - 1);
 Object command = last.getCommand();
 Object result = null;
 if (command instanceof Runnable) {
 	try {
 		((Runnable) command).run();
 	} catch (Exception ex) {
 		throw new ExecutionException(last, "Error in runnable " + command, ex);
 	}
 } else if (command instanceof Callable) {
 	try {
 		result = ((Callable) command).call();
 	} catch (Exception ex) {
 		throw new ExecutionException(last, "Error in callable " + command, ex);
 	}
 } else {
 	throw new ExecutionException(last, "Parsed command (" + command + ") is not Runnable or Callable");
 }
 last.setExecutionResult(result);
 return Arrays.asList(result);

    From picocli v2.0, RunLast is used to implement the run and call convenience methods.

    Since:
    2.0