NAME

Querylet::Output - generic output handler for Querlet::Query

VERSION

version 0.401

SYNOPSIS

This is an abstract base class, meant for subclassing.

 package Querylet::Output::Tabbed;
 use base qw(Querylet::Output);

 sub default_type { 'tabbed' }
 sub handler      { \&as_tabbed }  

 sub as_tabbed {
   my ($query) = @_;
   my @output;
   push @output, join("\t", @{$query->columns});
         push @output, join("\t", @{$_{@{$query->colummns}}}) for @{$query->results};
   return join("\n", @output);
 }

 1;

Then, in a querylet:

 use Querylet::Output::Tabbed;
 
 output format: tabbed

Or, to override the registered type:

 use Querylet::Output::Tabbed 'tsv';

 output format: tsv

DESCRIPTION

This class provides a simple way to write output handlers for Querylet, mostly by providing an import routine that will register the handler with the type-name requested by the using script.

The methods default_type and handler must exist, as described below.

IMPORT

Querylet::Output provides an import method that will register the handler when the module is imported. If an argument is given, it will be used as the type name to register. Otherwise, the result of default_type is used.

METHODS

default_type

This method returns the name of the type for which the output handler will be registered if no override is given.

handler

This method returns a reference to the handler, which will be used to register the handler.

AUTHOR

Ricardo SIGNES <rjbs@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2004 by Ricardo SIGNES.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.