mirror of
https://git.code.sf.net/p/seeddms/code
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310 lines
8.9 KiB
PHP
310 lines
8.9 KiB
PHP
<?php
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/**
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* Implementation of SQLiteFTS index
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*
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* @category DMS
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* @package SeedDMS_Lucene
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* @license GPL 2
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2010, Uwe Steinmann
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* @version Release: @package_version@
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*/
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/**
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* Class for managing a SQLiteFTS index.
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*
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* @category DMS
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* @package SeedDMS_Lucene
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2011, Uwe Steinmann
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* @version Release: @package_version@
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*/
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class SeedDMS_SQLiteFTS_Indexer {
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/**
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* @var object $index sqlite index
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* @access protected
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*/
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protected $_conn;
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/**
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* Constructor
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*
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*/
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function __construct($indexerDir) { /* {{{ */
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$this->_conn = new PDO('sqlite:'.$indexerDir.'/index.db');
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} /* }}} */
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/**
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* Open an existing index
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*
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* @param string $indexerDir directory on disk containing the index
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*/
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static function open($conf) { /* {{{ */
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if(file_exists($conf['indexdir'].'/index.db')) {
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return new SeedDMS_SQLiteFTS_Indexer($conf['indexdir']);
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} else
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return self::create($conf);
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} /* }}} */
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/**
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* Create a new index
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*
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* @param array $conf $conf['indexdir'] is the directory on disk containing the index
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*/
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static function create($conf) { /* {{{ */
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if(file_exists($conf['indexdir'].'/index.db'))
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unlink($conf['indexdir'].'/index.db');
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$index = new SeedDMS_SQLiteFTS_Indexer($conf['indexdir']);
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/* Make sure the sequence of fields is identical to the field list
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* in SeedDMS_SQLiteFTS_Term
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*/
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$version = SQLite3::version();
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if($version['versionNumber'] >= 3008000)
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$sql = 'CREATE VIRTUAL TABLE docs USING fts4(documentid, title, comment, keywords, category, mimetype, origfilename, owner, content, created, users, status, path, notindexed=created, matchinfo=fts3)';
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else
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$sql = 'CREATE VIRTUAL TABLE docs USING fts4(documentid, title, comment, keywords, category, mimetype, origfilename, owner, content, created, users, status, path, matchinfo=fts3)';
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$res = $index->_conn->exec($sql);
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if($res === false) {
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return null;
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}
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$sql = 'CREATE VIRTUAL TABLE docs_terms USING fts4aux(docs);';
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$res = $index->_conn->exec($sql);
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if($res === false) {
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return null;
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}
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return($index);
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} /* }}} */
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/**
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* Do some initialization
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*
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*/
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static function init($stopWordsFile='') { /* {{{ */
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} /* }}} */
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/**
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* Add document to index
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*
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* @param object $doc indexed document of class
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* SeedDMS_SQLiteFTS_IndexedDocument
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* @return boolean false in case of an error, otherwise true
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*/
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function addDocument($doc) { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "INSERT INTO docs (documentid, title, comment, keywords, category, owner, content, mimetype, origfilename, created, users, status, path) VALUES (".$this->_conn->quote($doc->getFieldValue('document_id')).", ".$this->_conn->quote($doc->getFieldValue('title')).", ".$this->_conn->quote($doc->getFieldValue('comment')).", ".$this->_conn->quote($doc->getFieldValue('keywords')).", ".$this->_conn->quote($doc->getFieldValue('category')).", ".$this->_conn->quote($doc->getFieldValue('owner')).", ".$this->_conn->quote($doc->getFieldValue('content')).", ".$this->_conn->quote($doc->getFieldValue('mimetype')).", ".$this->_conn->quote($doc->getFieldValue('origfilename')).", ".(int)$doc->getFieldValue('created').", ".$this->_conn->quote($doc->getFieldValue('users')).", ".$this->_conn->quote($doc->getFieldValue('status')).", ".$this->_conn->quote($doc->getFieldValue('path'))/*time()*/.")";
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$res = $this->_conn->exec($sql);
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if($res === false) {
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return false;
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var_dump($this->_conn->errorInfo());
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}
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return $res;
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} /* }}} */
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/**
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* Remove document from index
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*
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* @param object $doc indexed document of class
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* SeedDMS_SQLiteFTS_IndexedDocument
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* @return boolean false in case of an error, otherwise true
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*/
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public function delete($id) { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "DELETE FROM docs WHERE docid=".(int) $id;
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$res = $this->_conn->exec($sql);
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return $res;
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} /* }}} */
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/**
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* Check if document was deleted
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*
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* Just for compatibility with lucene.
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*
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* @return boolean always false
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*/
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public function isDeleted($id) { /* {{{ */
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return false;
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} /* }}} */
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/**
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* Find documents in index
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*
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* @param string $query
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* @param array $limit array with elements 'limit' and 'offset'
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* @return boolean false in case of an error, otherwise array with elements
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* 'count', 'hits', 'facets'
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*/
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public function find($query, $limit=array()) { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "SELECT count(*) AS `c` FROM `docs`";
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if($query)
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$sql .= " WHERE docs MATCH ".$this->_conn->quote($query);
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$res = $this->_conn->query($sql);
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$row = $res->fetch();
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$sql = "SELECT docid, documentid FROM docs";
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if($query)
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$sql .= " WHERE docs MATCH ".$this->_conn->quote($query);
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$res = $this->_conn->query($sql);
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if(!empty($limit['limit']))
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$sql .= " LIMIT ".(int) $limit['limit'];
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if(!empty($limit['offset']))
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$sql .= " OFFSET ".(int) $limit['offset'];
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$res = $this->_conn->query($sql);
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$hits = array();
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if($res) {
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foreach($res as $rec) {
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$hit = new SeedDMS_SQLiteFTS_QueryHit($this);
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$hit->id = $rec['docid'];
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$hit->documentid = $rec['documentid'];
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$hits[] = $hit;
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}
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}
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return array('count'=>$row['c'], 'hits'=>$hits);
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} /* }}} */
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/**
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* Get a single document from index
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*
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* @param integer $id id of document
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* @return boolean false in case of an error, otherwise true
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*/
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public function findById($id) { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "SELECT docid FROM docs WHERE docid=".(int) $id;
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$res = $this->_conn->query($sql);
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$hits = array();
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if($res) {
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while($rec = $res->fetch(PDO::FETCH_ASSOC)) {
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$hit = new SeedDMS_SQLiteFTS_QueryHit($this);
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$hit->id = $rec['docid'];
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$hits[] = $hit;
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}
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}
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return $hits;
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} /* }}} */
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/**
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* Get a single document from index
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*
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* @param integer $id id of index record
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* @return boolean false in case of an error, otherwise true
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*/
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public function getDocument($id) { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "SELECT docid, documentid, title, comment, owner, keywords, category, mimetype, origfilename, created, users, status, path FROM docs WHERE docid=".$id;
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$res = $this->_conn->query($sql);
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$doc = false;
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if($res) {
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$rec = $res->fetch(PDO::FETCH_ASSOC);
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$doc = new SeedDMS_SQLiteFTS_Document();
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$doc->addField('docid', $rec['docid']);
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$doc->addField('document_id', $rec['documentid']);
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$doc->addField('title', $rec['title']);
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$doc->addField('comment', $rec['comment']);
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$doc->addField('keywords', $rec['keywords']);
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$doc->addField('category', $rec['category']);
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$doc->addField('mimetype', $rec['mimetype']);
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$doc->addField('origfilename', $rec['origfilename']);
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$doc->addField('owner', $rec['owner']);
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$doc->addField('created', $rec['created']);
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$doc->addField('users', $rec['users']);
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$doc->addField('status', $rec['status']);
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$doc->addField('path', $rec['path']);
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}
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return $doc;
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} /* }}} */
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/**
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* Get a single folder from index
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*
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* @param integer $id id of folder
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* @return boolean false in case of an error, otherwise true
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*/
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public function getFolder($id) { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "SELECT docid, documentid, title, comment, owner, keywords, category, mimetype, origfilename, created, users, status, path FROM docs WHERE documentid='F".$id."'";
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$res = $this->_conn->query($sql);
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$doc = false;
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if($res) {
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$rec = $res->fetch(PDO::FETCH_ASSOC);
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$doc = new SeedDMS_SQLiteFTS_Document();
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$doc->addField('docid', $rec['docid']);
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$doc->addField('document_id', $rec['documentid']);
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$doc->addField('title', $rec['title']);
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$doc->addField('comment', $rec['comment']);
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$doc->addField('owner', $rec['owner']);
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$doc->addField('created', $rec['created']);
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$doc->addField('users', $rec['users']);
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$doc->addField('path', $rec['path']);
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}
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return $doc;
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} /* }}} */
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/**
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* Return list of terms in index
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*
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* This function does nothing!
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*/
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public function terms() { /* {{{ */
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if(!$this->_conn)
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return false;
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$sql = "SELECT term, col, occurrences FROM docs_terms WHERE col!='*' ORDER BY col";
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$res = $this->_conn->query($sql);
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$terms = array();
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if($res) {
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while($rec = $res->fetch(PDO::FETCH_ASSOC)) {
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$term = new SeedDMS_SQLiteFTS_Term($rec['term'], $rec['col'], $rec['occurrences']);
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$terms[] = $term;
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}
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}
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return $terms;
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} /* }}} */
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/**
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* Return list of documents in index
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*
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*/
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public function count() { /* {{{ */
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$sql = "SELECT count(*) c FROM docs";
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$res = $this->_conn->query($sql);
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if($res) {
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$rec = $res->fetch(PDO::FETCH_ASSOC);
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return $rec['c'];
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}
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return 0;
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} /* }}} */
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/**
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* Commit changes
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*
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* This function does nothing!
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*/
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function commit() { /* {{{ */
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} /* }}} */
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/**
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* Optimize index
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*
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* This function does nothing!
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*/
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function optimize() { /* {{{ */
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} /* }}} */
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}
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?>
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