xml::filter::tee(3pm) [debian man page]

XML::Filter::Tee(3pm)					User Contributed Perl Documentation				     XML::Filter::Tee(3pm)

NAME

       XML::Filter::Tee - Send SAX events to multiple processor, with switching

SYNOPSIS

	   my $t = XML::Filter::Tee->new(
	       { Handler => $h0 },
	       { Handler => $h1 },
	       { Handler => $h2 },
	       ...
	   );

	   ## Altering the handlers list:
	   $t->set_handlers( $h0, $h1, $h2, $h3 );

	   ## Controlling flow to a handler by number and by reference:
	   $t->disable_handler( 0 );
	   $t->enable_handler( 0 );

	   $t->disable_handler( $h0 );
	   $t->enable_handler( $h0 );

	   ## Use in a SAX machine (though see L<XML::SAX::Pipeline> and
	   ## L<XML::SAX::Tap> for a more convenient way to build a machine
	   ## like this):
	   my $m = Machine(
	       [ Intake => "XML::Filter::Tee" => qw( A B ) ],
	       [ A	=> ">>log.xml" ],
	       [ B	=> *OUTPUT ],
	   );

DESCRIPTION

       XML::Filter::Tee is a SAX filter that passes each event it receives on to a list of downstream handlers.

       It's like XML::Filter::SAXT in that the events are not buffered; each event is sent first to the tap, and then to the branch (this is
       different from XML::SAX::Dispatcher, which buffers the events).	Unlike XML::Filter::SAXT, it allows it's list of handlers to be
       reconfigured (via "set_handlers") and it allows control over which handlers are allowed to receive events.  These features are designed to
       make XML::Filter::Tee instances more useful with SAX machines, but they to add some overhead relative to XML::Filter::SAXT.

       The events are not copied, since they may be data structures that are difficult or impossibly to copy properly, like parts of a C-based DOM
       implementation.	This means that the handlers must not alter the events or later handlers will see the alterations.

METHODS

       new
	       my $t = XML::Filter::Tee->new(
		   { Handler => $h0 },
		   { Handler => $h1 },
		   { Handler => $h2 },
		   ...
	       );

       set_handlers
	       $t->set_handlers( $h0, $h1, $h2 );
	       $t->set_handlers( {
		       Handler => $h0,
		   },
		   {
		       Handler => $h1,
		   },
	       );

	   Replaces the current list of handlers with new ones.

	   Can also name handlers to make enabling/disabling them by name easier:

	       $m->set_handlers( {
		       Handler => $validator,
		       Name    => "Validator",
		   },
		   {
		       Handler => $outputer,
		   },
	       );

	       $m->disable_handler( "Validator" );

       disable_handler
	       $t->disable_handler( 0 );	    ## By location
	       $t->disable_handler( "Validator" );  ## By name
	       $t->disable_handler( $h0 );	    ## By reference

	   Stops sending events to the indicated handler.

       enable_handler
	       $t->enable_handler( 0 ); 	   ## By location
	       $t->enable_handler( "Validator" );  ## By name
	       $t->enable_handler( $h0 );	   ## By reference

	   Stops sending events to the indicated handler.

AUTHOR

	   Barrie Slaymaker <barries@slaysys.com>

COPYRIGHT

	   Copyright 2002, Barrie Slaymaker, All Rights Reserved

       You may use this module under the terms of the Artistic, GNU Public, or BSD licenses, as you choose.

perl v5.10.0							    2009-06-11						     XML::Filter::Tee(3pm)

Check Out this Related Man Page

Test::XML::SAX(3pm)					User Contributed Perl Documentation				       Test::XML::SAX(3pm)

NAME

       Test::XML::SAX - Test XML::SAX handlers

SYNOPSIS

	 use Test::XML::SAX tests => 1;
	 use My::XML::Filter;

	 my $handler = My::XML::Filter->new;
	 test_sax( $handler, '<foo />', '<bar/>', 'translates foo to bar' );

	 # ... In Another File ...

	 use Test::XML::SAX; use My::XML::Filter;

	 sub do_tests {
	     my $handler = My::XML::Filter->new;
	     test_sax( $handler, '<foo />', '<bar/>', 'translates foo to bar' );
	 }

	 test_all_sax_parsers( &do_tests, 1 );

DESCRIPTION

       This module is for testing XML::SAX handlers.

FUNCTIONS

       All functions are exported.

       test_sax ( HANDLER, INPUT, EXPECTED [, TESTNAME ] )
	   This function will process INPUT using HANDLER, and compare the result with EXPECTED.  TESTNAME can optionally be used to name the test
	   in the output (a good idea).

       test_all_sax_parsers ( SUB [, NUMTESTS ] )
	   This function will repeat a set of tests for all installed SAX parsers.  SUB must be a coderef to run a series of tests.  NUMTESTS is
	   the number of tests inside SUB.

	   NB: You must not issue a plan to Test::More if you call this function!  The plan will be set for you, according to the number of
	   parsers installed and NUMTESTS.  This also means that you must not have any tests outside of SUB or you will get an error.

	   When SUB is called, it will be passed two arguments.  The name of the parser being used and the number of tests.  It can use this
	   information to decide whether or not to skip this set of tests.

SEE ALSO

       Test::More, Test::XML, XML::SAX.

AUTHOR

       Dominic Mitchell, <cpan2 (at) semantico.com>

COPYRIGHT AND LICENSE

       Copyright 2002 by semantico

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

perl v5.14.2							    2009-07-02						       Test::XML::SAX(3pm)

Linux and UNIX Man Pages

xml::filter::tee(3pm) [debian man page]

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