XML::DOM::ValParser(3pm)				User Contributed Perl Documentation				  XML::DOM::ValParser(3pm)

NAME

       XML::DOM::ValParser - an XML::DOM::Parser that validates at parse time

SYNOPSIS

	use XML::DOM::ValParser;

	my %expat_options = (KeepCDATA => 1,
			     Handlers => [ Unparsed => &my_Unparsed_handler ]);
	my $parser = new XML::DOM::ValParser (%expat_options);

	eval {
	    local $XML::Checker::FAIL = &my_fail;
	    my $doc = $parser->parsefile ("fail.xml");
	    ... XML::DOM::Document was created sucessfully ...
	};
	if ($@) {
	    # Either XML::Parser (expat) threw an exception or my_fail() died.
	    ... your error handling code here ...
	    # Note that the XML::DOM::Document is automatically disposed off and
	    # will be garbage collected
	}

	# Throws an exception (with die) when an error is encountered, this
	# will stop the parsing process.
	# Don't die if a warning or info message is encountered, just print a message.
	sub my_fail {
	    my $code = shift;
	    die XML::Checker::error_string ($code, @_) if $code < 200;
	    XML::Checker::print_error ($code, @_);
	}

DESCRIPTION

       Use XML::DOM::ValParser wherever you would use XML::DOM::Parser and your XML will be checked using XML::Checker at parse time.

       See XML::DOM for details on XML::DOM::Parser options.  See XML::Checker for details on setting the fail handler (my_fail.)

       The following handlers are currently supported, just like XML::DOM::Parser: Init, Final, Char, Start, End, Default, Doctype, CdataStart,
       CdataEnd, XMLDecl, Entity, Notation, Proc, Default, Comment, Attlist, Element, Unparsed.

XML
::DOM::ValParser
       XML::DOM::ValParser extends from XML::Checker::Parser. It creates an XML::Checker object and routes all event handlers through the checker,
       before processing the events to create the XML::DOM::Document.

       Just like XML::Checker::Parser, the checker object can be retrieved with the getChecker() method and can be reused later on (provided that
       the DOCTYPE section of the XML::DOM::Document did not change in the mean time.)

       You can control which errors are fatal (and therefore should stop creation of the XML::DOM::Document) by filtering the appropriate error
       codes in the global $XML::Checker::FAIL handler (see "ERROR_HANDLING" in XML::Checker) and calling die or croak appropriately.

       Just like XML::Checker::Parser, XML::DOM::ValParser supports the SkipExternalDTD and SkipInsignifWS options. See XML::Checker::Parser for
       details.

AUTHOR

       Enno Derksen is the original author.

       Send bug reports, hints, tips, suggestions to T.J. Mather at <tjmather@tjmather.com>.

SEE ALSO

       XML::DOM, XML::Checker ("SEE_ALSO" in XML::Checker)

perl v5.10.0							    2001-08-26						  XML::DOM::ValParser(3pm)