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=head2 exec_callback

execute callback

Example:

  $self->execute_callback("some_phase");
  # some_phase method method No.1
  # some_phase method method No.2
  
  $self->execute_callback("any_phase", qw(one two three));
  # any_phase args: one two three 

=head2 exists_callback

exists callback check

Example:

  if ($self->exists_callback("some_phase")) {
      $self->exec_callback("some_phase");
  } else {
      die "some_phase is not exists callback phase";
  }

=head2 exit_value

set exit value

Example:

  # program exit value is 1(ex. echo $?)
  $self->exit_value(1);

=head2 finished 

setup or prepare phase and 1 set, run and postrun phase will not run. default 0

Example:

  # MyApp/Hello.pm
  package MyApp::Hello;
  
  use strict;
  use base qw(App::CLI::Command);
  
  sub prerun {
   
      my($self, @args) = @_;
      $self->finished(1);
  }
  
  # non execute 
  sub run {
  
      my($self, @args) = @_;
      print "hello\n";
  }

=head2 throw

raises an exception, fail phase transitions

Example:

  # MyApp/Hello.pm
  package MyApp::Hello;
  
  use strict;
  use base qw(App::CLI::Command);
  
  sub run {
  
      my($self, @args) = @_;
      my $file = "/path/to/file";
      open my $fh, "< $file" or $self->throw("can not open file:$file");
      while ( my $line = <$fh> ) {
          chomp $line;
          print "$line\n";
      }
      close $fh;
  }
  
  # transitions fail phase method
  sub fail {
  
      my($self, @args) = @_;
      # e is App:CLI::Extension::Exception instance
      printf "ERROR: %s", $self->e;
      printf "STACKTRACE: %s", $self->e->stacktrace;
  }
  
  # myapp
  #!/usr/bin/perl
  
  use strict;
  use MyApp;
  
  MyApp->dispatch;
  
  # execute
  [kurt@localhost ~] myapp hello
  ERROR: can not open file:/path/to/file at lib/MyApp/Throw.pm line 10.
  STACKTRACE: can not open file:/path/to/file at lib/MyApp/Throw.pm line 10
          MyApp::Throw::run('MyApp::Throw=HASH(0x81bd6b4)') called at /usr/lib/perl5/site_perl/5.8.8/App/CLI/Extension/Component/RunCommand.pm line 36
          App::CLI::Extension::Component::RunCommand::run_command('MyApp::Throw=HASH(0x81bd6b4)') called at /usr/lib/perl5/site_perl/5.8.8/App/CLI/Extension.pm line 177
          App::CLI::Extension::dispatch('MyApp') called at ./myapp line 7

when you run throw method, App::CLI::Extension::Exception instance that $self->e is set to.

App::CLI::Extension::Exception is the Error::Simple is inherited. refer to the to documentation of C<Error>

throw method without running CORE::die if you run the $self->e is the Error::Simple instance will be set

=head2 e

App::CLI::Extension::Exception or Error::Simple instance. There is a ready to use, fail phase only

=head1 RUN PHASE METHOD

=head2 setup

=head2 prerun

=head2 postrun

=head2 finish

program last phase. By default, the exit will be executed automatically, exit if you do not want the APPCLI_NON_EXIT environ valiable how do I set the (value is whatever)

=head2 fail

error phase. default exit value is 255. if you want to change exit_value, see exit_value manual

=cut

1;

__END__

=head1 SEE ALSO

L<App::CLI> L<Class::Accessor::Grouped> L<UNIVERSAL::require>

=head1 AUTHOR

Akira Horimoto

=head1 COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.

Copyright (C) 2009 Akira Horimoto

=cut