Constructor Detail

• TerminalInvoker

  public TerminalInvoker(java.lang.String toolname,
                         java.util.Map<java.lang.String,Task> taskmap)

  Creates a new invoker based on the given class with a given name. This should generally be invoked from a main method - in the event of an error it will call System.exit rather than returning.

  Parameters:

  toolname - the name of this tool, used for user messages

  taskmap - map of task names to Task objects

Method Detail

• invoke

  public void invoke(java.lang.String[] args)
              throws java.lang.Exception

  Invokes a method from this TerminalInvoker's class. The first element of the args identifies the method to be called - it is a case-insensitive version of the name of a method in the class. Subsequent elements are passed (as an args.length-1 element array of Strings) to the method in question. In the event of any trouble (e.g. unknown task, task method throws an exception) a message is printed to standard error and the JVM exits.

  Parameters:

  args - the arguments identifying what method to call and what arguments to pass to it

  Throws:

  java.lang.Exception

• getTaskUsage

  public static java.lang.String getTaskUsage(Task task)

  Returns a usage string for a given task. This contains only a symbolic representation of the parameter names, not the task name itself.

  Parameters:

  task - task

  Returns:

  usage string