--- /dev/null
+<?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) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: Term.php 16541 2009-07-07 06:59:03Z bkarwin $
+ */
+
+
+/** Zend_Search_Lucene_Search_Query */
+require_once 'Zend/Search/Lucene/Search/Query.php';
+
+/** Zend_Search_Lucene_Search_Weight_Term */
+require_once 'Zend/Search/Lucene/Search/Weight/Term.php';
+
+
+/**
+ * @category Zend
+ * @package Zend_Search_Lucene
+ * @subpackage Search
+ * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Search_Lucene_Search_Query_Term extends Zend_Search_Lucene_Search_Query
+{
+ /**
+ * Term to find.
+ *
+ * @var Zend_Search_Lucene_Index_Term
+ */
+ private $_term;
+
+ /**
+ * Documents vector.
+ *
+ * @var array
+ */
+ private $_docVector = null;
+
+ /**
+ * Term freqs vector.
+ * array(docId => freq, ...)
+ *
+ * @var array
+ */
+ private $_termFreqs;
+
+
+ /**
+ * Zend_Search_Lucene_Search_Query_Term constructor
+ *
+ * @param Zend_Search_Lucene_Index_Term $term
+ * @param boolean $sign
+ */
+ public function __construct(Zend_Search_Lucene_Index_Term $term)
+ {
+ $this->_term = $term;
+ }
+
+ /**
+ * Re-write query into primitive queries in the context of specified index
+ *
+ * @param Zend_Search_Lucene_Interface $index
+ * @return Zend_Search_Lucene_Search_Query
+ */
+ public function rewrite(Zend_Search_Lucene_Interface $index)
+ {
+ if ($this->_term->field != null) {
+ return $this;
+ } else {
+ $query = new Zend_Search_Lucene_Search_Query_MultiTerm();
+ $query->setBoost($this->getBoost());
+
+ foreach ($index->getFieldNames(true) as $fieldName) {
+ $term = new Zend_Search_Lucene_Index_Term($this->_term->text, $fieldName);
+
+ $query->addTerm($term);
+ }
+
+ return $query->rewrite($index);
+ }
+ }
+
+ /**
+ * Optimize query in the context of specified index
+ *
+ * @param Zend_Search_Lucene_Interface $index
+ * @return Zend_Search_Lucene_Search_Query
+ */
+ public function optimize(Zend_Search_Lucene_Interface $index)
+ {
+ // Check, that index contains specified term
+ if (!$index->hasTerm($this->_term)) {
+ return new Zend_Search_Lucene_Search_Query_Empty();
+ }
+
+ return $this;
+ }
+
+
+ /**
+ * Constructs an appropriate Weight implementation for this query.
+ *
+ * @param Zend_Search_Lucene_Interface $reader
+ * @return Zend_Search_Lucene_Search_Weight
+ */
+ public function createWeight(Zend_Search_Lucene_Interface $reader)
+ {
+ $this->_weight = new Zend_Search_Lucene_Search_Weight_Term($this->_term, $this, $reader);
+ return $this->_weight;
+ }
+
+ /**
+ * Execute query in context of index reader
+ * It also initializes necessary internal structures
+ *
+ * @param Zend_Search_Lucene_Interface $reader
+ * @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
+ */
+ public function execute(Zend_Search_Lucene_Interface $reader, $docsFilter = null)
+ {
+ $this->_docVector = array_flip($reader->termDocs($this->_term, $docsFilter));
+ $this->_termFreqs = $reader->termFreqs($this->_term, $docsFilter);
+
+ // Initialize weight if it's not done yet
+ $this->_initWeight($reader);
+ }
+
+ /**
+ * Get document ids likely matching the query
+ *
+ * It's an array with document ids as keys (performance considerations)
+ *
+ * @return array
+ */
+ public function matchedDocs()
+ {
+ return $this->_docVector;
+ }
+
+ /**
+ * Score specified document
+ *
+ * @param integer $docId
+ * @param Zend_Search_Lucene_Interface $reader
+ * @return float
+ */
+ public function score($docId, Zend_Search_Lucene_Interface $reader)
+ {
+ if (isset($this->_docVector[$docId])) {
+ return $reader->getSimilarity()->tf($this->_termFreqs[$docId]) *
+ $this->_weight->getValue() *
+ $reader->norm($docId, $this->_term->field) *
+ $this->getBoost();
+ } else {
+ return 0;
+ }
+ }
+
+ /**
+ * Return query terms
+ *
+ * @return array
+ */
+ public function getQueryTerms()
+ {
+ return array($this->_term);
+ }
+
+ /**
+ * Return query term
+ *
+ * @return Zend_Search_Lucene_Index_Term
+ */
+ public function getTerm()
+ {
+ return $this->_term;
+ }
+
+ /**
+ * Query specific matches highlighting
+ *
+ * @param Zend_Search_Lucene_Search_Highlighter_Interface $highlighter Highlighter object (also contains doc for highlighting)
+ */
+ protected function _highlightMatches(Zend_Search_Lucene_Search_Highlighter_Interface $highlighter)
+ {
+ $highlighter->highlight($this->_term->text);
+ }
+
+ /**
+ * Print a query
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ // It's used only for query visualisation, so we don't care about characters escaping
+ if ($this->_term->field !== null) {
+ $query = $this->_term->field . ':';
+ } else {
+ $query = '';
+ }
+
+ $query .= $this->_term->text;
+
+ if ($this->getBoost() != 1) {
+ $query = $query . '^' . round($this->getBoost(), 4);
+ }
+
+ return $query;
+ }
+}
+
projects / web.mtrack / blobdiff