<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Search_Lucene

 * @subpackage Search

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Phrase.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/** Zend_Search_Lucene_Search_QueryEntry */

require_once 'Zend/Search/Lucene/Search/QueryEntry.php';

/**

 * @category   Zend

 * @package    Zend_Search_Lucene

 * @subpackage Search

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Search_Lucene_Search_QueryEntry_Phrase extends Zend_Search_Lucene_Search_QueryEntry

{

    /**

     * Phrase value

     *

     * @var string

     */

    private $_phrase;

    /**

     * Field

     *

     * @var string|null

     */

    private $_field;

    /**

     * Proximity phrase query

     *

     * @var boolean

     */

    private $_proximityQuery = false;

    /**

     * Words distance, used for proximiti queries

     *

     * @var integer

     */

    private $_wordsDistance = 0;

    /**

     * Object constractor

     *

     * @param string $phrase

     * @param string $field

     */

    public function __construct($phrase, $field)

    {

        $this->_phrase = $phrase;

        $this->_field  = $field;

    }

    /**

     * Process modifier ('~')

     *

     * @param mixed $parameter

     */

    public function processFuzzyProximityModifier($parameter = null)

    {

        $this->_proximityQuery = true;

        if ($parameter !== null) {

            $this->_wordsDistance = $parameter;

        }

    }

    /**

     * Transform entry to a subquery

     *

     * @param string $encoding

     * @return Zend_Search_Lucene_Search_Query

     * @throws Zend_Search_Lucene_Search_QueryParserException

     */

    public function getQuery($encoding)

    {

        /** Zend_Search_Lucene_Search_Query_Preprocessing_Phrase */

        require_once 'Zend/Search/Lucene/Search/Query/Preprocessing/Phrase.php';

        $query = new Zend_Search_Lucene_Search_Query_Preprocessing_Phrase($this->_phrase,

                                                                          $encoding,

                                                                          ($this->_field !== null)?

                                                                              iconv($encoding, 'UTF-8', $this->_field) :

                                                                              null);

        if ($this->_proximityQuery) {

            $query->setSlop($this->_wordsDistance);

        }

        $query->setBoost($this->_boost);

        return $query;

    }

}