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<?php
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/**
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* This file contains the class XML_Query2XML_Data_Processor_Unserialize.
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*
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* PHP version 5
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*
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* @category XML
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* @package XML_Query2XML
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* @author Lukas Feiler <lukas.feiler@lukasfeiler.com>
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* @copyright 2009 Lukas Feiler
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* @license http://www.gnu.org/copyleft/lesser.html LGPL Version 2.1
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* @version CVS: $Id: Unserialize.php 276639 2009-03-01 13:17:08Z lukasfeiler $
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* @link http://pear.php.net/package/XML_Query2XML
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* @access private
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*/
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/**
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* XML_Query2XML_Data_Processor_Unserialize extends the class
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* XML_Query2XML_Data_Processor.
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*/
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require_once 'XML/Query2XML/Data/Processor.php';
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/**
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* Data Processor Class that allows unserialization of XML data returned by
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* a pre-processor as a string.
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*
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* XML_Query2XML_Data_Processor_Unserialize only works with a pre-processor
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* that returns a string.
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*
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* usage:
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* <code>
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* $commandObject = new XML_Query2XML_Data_Processor_Unserialize(
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* new XML_Query2XML_Data_Source_ColumnValue('xml_data') //pre-processor
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* );
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* </code>
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*
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* @category XML
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* @package XML_Query2XML
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* @author Lukas Feiler <lukas.feiler@lukasfeiler.com>
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* @copyright 2009 Lukas Feiler
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* @license http://www.gnu.org/copyleft/lesser.html LGPL Version 2.1
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* @version Release: 1.7.2
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* @link http://pear.php.net/package/XML_Query2XML
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* @access private
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* @since Release 1.7.1RC1
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*/
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class XML_Query2XML_Data_Processor_Unserialize extends XML_Query2XML_Data_Processor
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{
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/**
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* Create a new instance of this class.
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*
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* @param mixed $preProcessor The pre-processor to be used. An instance of
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* XML_Query2XML_Data or null.
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* @param string $configPath The configuration path within the $options
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* array.
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*
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* @return XML_Query2XML_Data_Processor_Unserialize
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*/
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public function create($preProcessor, $configPath)
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{
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$processor = new XML_Query2XML_Data_Processor_Unserialize($preProcessor);
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$processor->setConfigPath($configPath);
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return $processor;
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}
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/**
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* Called by XML_Query2XML for every record in the result set.
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* This method will return an instance of DOMElement or null
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* if an empty string was returned by the pre-processor.
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*
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* @param array $record An associative array.
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*
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* @return DOMElement
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* @throws XML_Query2XML_ConfigException If the pre-processor returned
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* something that cannot be converted to a string (i.e. an
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* array or an object) or if that string could not be
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* unserialized, i.e. was not corretly formatted XML.
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*/
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public function execute(array $record)
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{
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$doc = new DOMDocument();
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$xml = $this->runPreProcessor($record);
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if (is_array($xml) || is_object($xml)) {
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throw new XML_Query2XML_XMLException(
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$this->getConfigPath()
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. 'XML_Query2XML_Data_Processor_Unserialize: string '
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. 'expected from pre-processor, but ' . gettype($xml) . ' returned.'
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);
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} else {
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if (strlen($xml)) {
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if (!@$doc->loadXML($xml)) {
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throw new XML_Query2XML_XMLException(
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$this->getConfigPath()
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. 'XML_Query2XML_Data_Processor_Unserialize: '
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. 'Could not unserialize the following XML data: "'
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. $xml . '"'
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);
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}
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return $doc->documentElement;
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} else {
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return null;
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}
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}
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}
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}
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?>
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