Class CommandLine.RunLast

java.lang.Object
picocli.CommandLine.AbstractHandler<List<Object>, CommandLine.AbstractParseResultHandler<List<Object>>>
picocli.CommandLine.AbstractParseResultHandler<List<Object>>
picocli.CommandLine.RunLast
All Implemented Interfaces:
CommandLine.IExecutionStrategy, CommandLine.IParseResultHandler, CommandLine.IParseResultHandler2<List<Object>>
Enclosing class:
CommandLine
public static class CommandLine.RunLast extends CommandLine.AbstractParseResultHandler<List<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