mirror of
https://github.com/silverstripe/silverstripe-docsviewer
synced 2024-10-22 11:05:56 +02:00
613 lines
16 KiB
PHP
Executable File
613 lines
16 KiB
PHP
Executable File
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Search_Lucene
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* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Proxy.php 20096 2010-01-06 02:05:09Z bkarwin $
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*/
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/** Zend_Search_Lucene_Interface */
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require_once 'Zend/Search/Lucene/Interface.php';
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/**
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* Proxy class intended to be used in userland.
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*
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* It tracks, when index object goes out of scope and forces ndex closing
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*
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* @category Zend
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* @package Zend_Search_Lucene
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* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Search_Lucene_Proxy implements Zend_Search_Lucene_Interface
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{
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/**
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* Index object
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*
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* @var Zend_Search_Lucene_Interface
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*/
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private $_index;
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/**
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* Object constructor
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*
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* @param Zend_Search_Lucene_Interface $index
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*/
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public function __construct(Zend_Search_Lucene_Interface $index)
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{
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$this->_index = $index;
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$this->_index->addReference();
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}
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/**
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* Object destructor
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*/
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public function __destruct()
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{
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if ($this->_index !== null) {
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// This code is invoked if Zend_Search_Lucene_Interface object constructor throws an exception
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$this->_index->removeReference();
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}
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$this->_index = null;
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}
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/**
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* Get current generation number
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*
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* Returns generation number
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* 0 means pre-2.1 index format
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* -1 means there are no segments files.
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*
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* @param Zend_Search_Lucene_Storage_Directory $directory
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* @return integer
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* @throws Zend_Search_Lucene_Exception
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*/
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public static function getActualGeneration(Zend_Search_Lucene_Storage_Directory $directory)
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{
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Zend_Search_Lucene::getActualGeneration($directory);
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}
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/**
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* Get segments file name
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*
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* @param integer $generation
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* @return string
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*/
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public static function getSegmentFileName($generation)
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{
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Zend_Search_Lucene::getSegmentFileName($generation);
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}
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/**
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* Get index format version
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*
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* @return integer
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*/
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public function getFormatVersion()
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{
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return $this->_index->getFormatVersion();
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}
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/**
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* Set index format version.
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* Index is converted to this format at the nearest upfdate time
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*
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* @param int $formatVersion
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* @throws Zend_Search_Lucene_Exception
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*/
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public function setFormatVersion($formatVersion)
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{
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$this->_index->setFormatVersion($formatVersion);
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}
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/**
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* Returns the Zend_Search_Lucene_Storage_Directory instance for this index.
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*
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* @return Zend_Search_Lucene_Storage_Directory
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*/
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public function getDirectory()
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{
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return $this->_index->getDirectory();
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}
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/**
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* Returns the total number of documents in this index (including deleted documents).
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*
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* @return integer
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*/
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public function count()
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{
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return $this->_index->count();
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}
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/**
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* Returns one greater than the largest possible document number.
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* This may be used to, e.g., determine how big to allocate a structure which will have
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* an element for every document number in an index.
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*
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* @return integer
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*/
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public function maxDoc()
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{
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return $this->_index->maxDoc();
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}
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/**
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* Returns the total number of non-deleted documents in this index.
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*
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* @return integer
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*/
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public function numDocs()
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{
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return $this->_index->numDocs();
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}
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/**
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* Checks, that document is deleted
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*
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* @param integer $id
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* @return boolean
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* @throws Zend_Search_Lucene_Exception Exception is thrown if $id is out of the range
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*/
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public function isDeleted($id)
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{
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return $this->_index->isDeleted($id);
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}
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/**
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* Set default search field.
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*
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* Null means, that search is performed through all fields by default
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*
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* Default value is null
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*
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* @param string $fieldName
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*/
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public static function setDefaultSearchField($fieldName)
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{
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Zend_Search_Lucene::setDefaultSearchField($fieldName);
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}
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/**
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* Get default search field.
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*
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* Null means, that search is performed through all fields by default
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*
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* @return string
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*/
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public static function getDefaultSearchField()
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{
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return Zend_Search_Lucene::getDefaultSearchField();
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}
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/**
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* Set result set limit.
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*
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* 0 (default) means no limit
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*
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* @param integer $limit
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*/
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public static function setResultSetLimit($limit)
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{
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Zend_Search_Lucene::setResultSetLimit($limit);
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}
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/**
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* Set result set limit.
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*
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* 0 means no limit
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*
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* @return integer
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*/
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public static function getResultSetLimit()
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{
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return Zend_Search_Lucene::getResultSetLimit();
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}
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/**
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* Retrieve index maxBufferedDocs option
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*
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* maxBufferedDocs is a minimal number of documents required before
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* the buffered in-memory documents are written into a new Segment
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*
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* Default value is 10
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*
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* @return integer
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*/
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public function getMaxBufferedDocs()
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{
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return $this->_index->getMaxBufferedDocs();
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}
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/**
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* Set index maxBufferedDocs option
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*
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* maxBufferedDocs is a minimal number of documents required before
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* the buffered in-memory documents are written into a new Segment
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*
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* Default value is 10
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*
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* @param integer $maxBufferedDocs
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*/
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public function setMaxBufferedDocs($maxBufferedDocs)
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{
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$this->_index->setMaxBufferedDocs($maxBufferedDocs);
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}
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/**
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* Retrieve index maxMergeDocs option
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*
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* maxMergeDocs is a largest number of documents ever merged by addDocument().
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* Small values (e.g., less than 10,000) are best for interactive indexing,
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* as this limits the length of pauses while indexing to a few seconds.
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* Larger values are best for batched indexing and speedier searches.
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*
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* Default value is PHP_INT_MAX
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*
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* @return integer
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*/
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public function getMaxMergeDocs()
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{
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return $this->_index->getMaxMergeDocs();
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}
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/**
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* Set index maxMergeDocs option
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*
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* maxMergeDocs is a largest number of documents ever merged by addDocument().
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* Small values (e.g., less than 10,000) are best for interactive indexing,
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* as this limits the length of pauses while indexing to a few seconds.
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* Larger values are best for batched indexing and speedier searches.
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*
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* Default value is PHP_INT_MAX
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*
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* @param integer $maxMergeDocs
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*/
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public function setMaxMergeDocs($maxMergeDocs)
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{
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$this->_index->setMaxMergeDocs($maxMergeDocs);
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}
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/**
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* Retrieve index mergeFactor option
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*
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* mergeFactor determines how often segment indices are merged by addDocument().
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* With smaller values, less RAM is used while indexing,
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* and searches on unoptimized indices are faster,
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* but indexing speed is slower.
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* With larger values, more RAM is used during indexing,
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* and while searches on unoptimized indices are slower,
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* indexing is faster.
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* Thus larger values (> 10) are best for batch index creation,
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* and smaller values (< 10) for indices that are interactively maintained.
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*
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* Default value is 10
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*
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* @return integer
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*/
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public function getMergeFactor()
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{
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return $this->_index->getMergeFactor();
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}
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/**
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* Set index mergeFactor option
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*
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* mergeFactor determines how often segment indices are merged by addDocument().
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* With smaller values, less RAM is used while indexing,
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* and searches on unoptimized indices are faster,
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* but indexing speed is slower.
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* With larger values, more RAM is used during indexing,
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* and while searches on unoptimized indices are slower,
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* indexing is faster.
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* Thus larger values (> 10) are best for batch index creation,
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* and smaller values (< 10) for indices that are interactively maintained.
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*
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* Default value is 10
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*
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* @param integer $maxMergeDocs
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*/
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public function setMergeFactor($mergeFactor)
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{
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$this->_index->setMergeFactor($mergeFactor);
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}
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/**
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* Performs a query against the index and returns an array
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* of Zend_Search_Lucene_Search_QueryHit objects.
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* Input is a string or Zend_Search_Lucene_Search_Query.
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*
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* @param mixed $query
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* @return array Zend_Search_Lucene_Search_QueryHit
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* @throws Zend_Search_Lucene_Exception
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*/
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public function find($query)
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{
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// actual parameter list
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$parameters = func_get_args();
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// invoke $this->_index->find() method with specified parameters
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return call_user_func_array(array(&$this->_index, 'find'), $parameters);
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}
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/**
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* Returns a list of all unique field names that exist in this index.
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*
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* @param boolean $indexed
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* @return array
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*/
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public function getFieldNames($indexed = false)
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{
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return $this->_index->getFieldNames($indexed);
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}
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/**
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* Returns a Zend_Search_Lucene_Document object for the document
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* number $id in this index.
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*
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* @param integer|Zend_Search_Lucene_Search_QueryHit $id
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* @return Zend_Search_Lucene_Document
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*/
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public function getDocument($id)
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{
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return $this->_index->getDocument($id);
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}
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/**
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* Returns true if index contain documents with specified term.
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*
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* Is used for query optimization.
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*
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* @param Zend_Search_Lucene_Index_Term $term
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* @return boolean
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*/
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public function hasTerm(Zend_Search_Lucene_Index_Term $term)
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{
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return $this->_index->hasTerm($term);
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}
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/**
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* Returns IDs of all the documents containing term.
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*
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* @param Zend_Search_Lucene_Index_Term $term
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* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
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* @return array
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*/
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public function termDocs(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
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{
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return $this->_index->termDocs($term, $docsFilter);
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}
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/**
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* Returns documents filter for all documents containing term.
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*
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* It performs the same operation as termDocs, but return result as
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* Zend_Search_Lucene_Index_DocsFilter object
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*
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* @param Zend_Search_Lucene_Index_Term $term
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* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
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* @return Zend_Search_Lucene_Index_DocsFilter
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*/
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public function termDocsFilter(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
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{
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return $this->_index->termDocsFilter($term, $docsFilter);
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}
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/**
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* Returns an array of all term freqs.
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* Return array structure: array( docId => freq, ...)
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*
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* @param Zend_Search_Lucene_Index_Term $term
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* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
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* @return integer
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*/
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public function termFreqs(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
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{
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return $this->_index->termFreqs($term, $docsFilter);
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}
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/**
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* Returns an array of all term positions in the documents.
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* Return array structure: array( docId => array( pos1, pos2, ...), ...)
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*
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* @param Zend_Search_Lucene_Index_Term $term
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* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
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* @return array
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*/
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public function termPositions(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
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{
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return $this->_index->termPositions($term, $docsFilter);
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}
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/**
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* Returns the number of documents in this index containing the $term.
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*
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* @param Zend_Search_Lucene_Index_Term $term
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* @return integer
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*/
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public function docFreq(Zend_Search_Lucene_Index_Term $term)
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{
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return $this->_index->docFreq($term);
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}
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/**
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* Retrive similarity used by index reader
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*
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* @return Zend_Search_Lucene_Search_Similarity
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*/
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public function getSimilarity()
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{
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return $this->_index->getSimilarity();
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}
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/**
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* Returns a normalization factor for "field, document" pair.
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*
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* @param integer $id
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* @param string $fieldName
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* @return float
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*/
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public function norm($id, $fieldName)
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{
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return $this->_index->norm($id, $fieldName);
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}
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/**
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* Returns true if any documents have been deleted from this index.
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*
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* @return boolean
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*/
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public function hasDeletions()
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{
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return $this->_index->hasDeletions();
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}
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/**
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* Deletes a document from the index.
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* $id is an internal document id
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*
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* @param integer|Zend_Search_Lucene_Search_QueryHit $id
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* @throws Zend_Search_Lucene_Exception
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*/
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public function delete($id)
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{
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return $this->_index->delete($id);
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}
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/**
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* Adds a document to this index.
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*
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* @param Zend_Search_Lucene_Document $document
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*/
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public function addDocument(Zend_Search_Lucene_Document $document)
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{
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$this->_index->addDocument($document);
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}
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/**
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* Commit changes resulting from delete() or undeleteAll() operations.
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*/
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public function commit()
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{
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$this->_index->commit();
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}
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/**
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* Optimize index.
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*
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* Merges all segments into one
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*/
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public function optimize()
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{
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$this->_index->optimize();
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}
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/**
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* Returns an array of all terms in this index.
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*
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* @return array
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*/
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public function terms()
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{
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return $this->_index->terms();
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}
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/**
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* Reset terms stream.
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*/
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public function resetTermsStream()
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{
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$this->_index->resetTermsStream();
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}
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/**
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* Skip terms stream up to specified term preffix.
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*
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* Prefix contains fully specified field info and portion of searched term
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*
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* @param Zend_Search_Lucene_Index_Term $prefix
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*/
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public function skipTo(Zend_Search_Lucene_Index_Term $prefix)
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{
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return $this->_index->skipTo($prefix);
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}
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/**
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* Scans terms dictionary and returns next term
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*
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* @return Zend_Search_Lucene_Index_Term|null
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*/
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public function nextTerm()
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{
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return $this->_index->nextTerm();
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}
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/**
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* Returns term in current position
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*
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* @return Zend_Search_Lucene_Index_Term|null
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*/
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public function currentTerm()
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{
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return $this->_index->currentTerm();
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}
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/**
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* Close terms stream
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*
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* Should be used for resources clean up if stream is not read up to the end
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*/
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public function closeTermsStream()
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{
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$this->_index->closeTermsStream();
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}
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/**
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* Undeletes all documents currently marked as deleted in this index.
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*/
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public function undeleteAll()
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{
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return $this->_index->undeleteAll();
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}
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/**
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* Add reference to the index object
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*
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* @internal
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*/
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public function addReference()
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{
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return $this->_index->addReference();
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}
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/**
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* Remove reference from the index object
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|
*
|
|
* When reference count becomes zero, index is closed and resources are cleaned up
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|
*
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|
* @internal
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|
*/
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public function removeReference()
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|
{
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|
return $this->_index->removeReference();
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|
}
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|
}
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