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POE::Filter::XML::Node(3pm) User Contributed Perl Documentation POE::Filter::XML::Node(3pm)

NAME

POE::Filter::XML::Node - A XML::LibXML::Element subclass that adds streaming semantics

VERSION

version 1.140700

SYNOPSIS

    use POE::Filter::XML::Node;
    my $node = POE::Filter::XML::Node->new('iq');
    $node->setAttributes(
        ['to', 'foo@other', 
        'from', 'bar@other',
        'type', 'get']
    );
    my $query = $node->addNewChild('jabber:iq:foo', 'query');
    $query->appendTextChild('foo_tag', 'bar');
    say $node->toString();
    -- 
    (newlines and tabs for example only)
    <iq to='foo@other' from='bar@other' type='get'>
        <query xmlns='jabber:iq:foo'>
            <foo_tag>bar</foo_tag>
        </query>
    </iq>

DESCRIPTION

POE::Filter::XML::Node is a XML::LibXML::Element subclass that aims to provide a few extra convenience methods and light integration into a streaming context.

This module can be used to create arbitrarily complex XML data structures that know how to stringify themselves.

PUBLIC_ATTRIBUTES

stream_[start|end]

    is: ro, isa: Bool, default: false

These two attributes define behaviors to toString() for the node. In the case of stream_start, this means dropping all children and merely leaving the tag unterminated (eg. <start>). For stream_end, it will drop any children and treat the tag like a terminator (eg. </end>).

Each attribute has a private writer ('_set_stream_[start|end]') if it necessary to manipulate these attributes post construction.

PUBLIC_METHODS

override cloneNode

    (Bool $deep)

cloneNode is overridden to carry forward the stream_[end|start] attributes

override toString

    (Bool $formatted)

toString was overridden to provide special stringification semantics for when stream_start or stream_end are boolean true.

setAttributes

    (ArrayRef $array_of_tuples)

setAttributes() accepts a single argument: an array reference. Basically you pair up all the attributes you want to be into the node (ie. [attrib, value]) and this method will process them using setAttribute(). This is just a convenience method.

If one of the attributes is 'xmlns', setNamespace() will be called with the value used as the $nsURI argument, with no prefix, and not activated.

 eg. 
 ['xmlns', 'http://foo']
        |
        V
 setNamespace($value, '', 0)
        |
        V
 <node xmlns="http://foo"/>

getAttributes

    returns (HashRef)

This method returns all of the attribute nodes on the Element (filtering out namespace declarations) as a HashRef.

getFirstChildByTagName(Str $name)

    returns (Maybe[POE::Filter::XML::Node])

This is a convenience method that basically does:
(getChildrenByTagName($name))[0]

getChildrenHash

    returns (HashRef)

getChildrenHash() returns a hash reference to all the children of that node. Each key in the hash will be node name, and each value will be an array reference with all of the children with that name.

AUTHOR

Nicholas R. Perez <nperez@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Nicholas R. Perez <nperez@cpan.org>.

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

2022-06-17 perl v5.34.0