Looping through XML file on basis of a node Post: 302943706

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xacobeo::document

Xacobeo::Document(3pm)					User Contributed Perl Documentation				    Xacobeo::Document(3pm)

NAME

       Xacobeo::Document - An XML document and its related information.

SYNOPSIS

	       use Xacobeo::Document;

	       my $document = Xacobeo::Document->new_from_file('file.xml', 'xml');

	       my $namespaces = $document->get_namespaces(); # Hashref
	       while (my ($uri, $prefix) = each %{ $namespaces }) {
		       printf "%-5s: %s
", $prefix, $uri;
	       }

	       my $nodes = $document->find('/x:html//x:a[@href]');
	       foreach my $node ($nodes->get_nodelist) {
		       print "Got node ", $node->name, "
";
	       }

	       $document->validate('/x:html//x:a[@href]') or die "Invalid XPath expression";

DESCRIPTION

       This class wraps an XML document with its corresponding meta information (namespaces, XPath context, document node, etc).

       It inherits from Glib::Object.

PROPERTIES

       The following properties are defined:

   source
       The source of the document. In most cases this will be a path or an URI pointing to the document.

   type
       The type of document 'xml' or 'html'.

   documentNode
       The document's main node (an instance of XML::LibXML::Node).

   xpath
       The XPath conext to be used with the document.

   namespaces
       An hashref with the namespaces registered in the document.

METHODS

       The package defines the following methods:

   new_from_file
       Creates a new instance from a file (an URI should also be valid).

       Parameters:

	       $source: the source of the document, this can be a filename or an URI.
	       $type:	the type of document: C<xml> or C<html>.

   new_from_string
       Creates a new instance from a string.

       Parameters:

	       $content: the contents of the document.
	       $type:	 the type of document: C<xml> or C<html>.

   empty
       Returns an empty document.

   source
       The source of the document: most likely a file path or an URI.

   type
       The type of document: xml or html.

   namespaces
       Returns the namespaces declared in the document. The namespaces are returned in a hashref where the URIs are used as a key and the prefix
       as a value.

   documentNode
       Returns the document's node (an instance of XML::LibXML::Document).

   xpath
       Returns the XPath context (an instance of XML::LibXML::XPathContext) that includes the namespaces declared in the document. This is the
       context used to execute all XPath queries.

   find
       Runs the given XPath query on the document and returns the results. The results could be a node list or a single value like a boolean, a
       number or a scalar if an expression is passed. This method always return its values in scalar context.

       This method croaks if the expression can't be evaluated.

       Parameters:

	       $xpath: the XPath expression to execute.

   validate
       Validates the syntax of the given XPath query. The syntax is validated within a context that has the same namespaces as the ones defined in
       the current XML document.

       NOTE: This method can't validate if undefined functions or variables are used.

       Parameters:

	       $xpath: the XPath expression to validate.

   get_prefixed_name
       Returns the node name by prefixing it with our prefixes in the case where namespaces are used.

AUTHORS

       Emmanuel Rodriguez <potyl@cpan.org>.

COPYRIGHT AND LICENSE

       Copyright (C) 2008,2009 by Emmanuel Rodriguez.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or,
       at your option, any later version of Perl 5 you may have available.

perl v5.14.2							    2011-11-16						    Xacobeo::Document(3pm)

10 More Discussions You Might Find Interesting

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Discussion started by: summer_cherry

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How to get the main node name in xml using perl?

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