--- /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: Range.php 16971 2009-07-22 18:05:45Z mikaelkael $
+ */
+
+
+/** Zend_Search_Lucene_Search_Query */
+require_once 'Zend/Search/Lucene/Search/Query.php';
+
+/** Zend_Search_Lucene_Search_Query_MultiTerm */
+require_once 'Zend/Search/Lucene/Search/Query/MultiTerm.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_Range extends Zend_Search_Lucene_Search_Query
+{
+ /**
+ * Lower term.
+ *
+ * @var Zend_Search_Lucene_Index_Term
+ */
+ private $_lowerTerm;
+
+ /**
+ * Upper term.
+ *
+ * @var Zend_Search_Lucene_Index_Term
+ */
+ private $_upperTerm;
+
+
+ /**
+ * Search field
+ *
+ * @var string
+ */
+ private $_field;
+
+ /**
+ * Inclusive
+ *
+ * @var boolean
+ */
+ private $_inclusive;
+
+ /**
+ * Matched terms.
+ *
+ * Matched terms list.
+ * It's filled during the search (rewrite operation) and may be used for search result
+ * post-processing
+ *
+ * Array of Zend_Search_Lucene_Index_Term objects
+ *
+ * @var array
+ */
+ private $_matches = null;
+
+
+ /**
+ * Zend_Search_Lucene_Search_Query_Range constructor.
+ *
+ * @param Zend_Search_Lucene_Index_Term|null $lowerTerm
+ * @param Zend_Search_Lucene_Index_Term|null $upperTerm
+ * @param boolean $inclusive
+ * @throws Zend_Search_Lucene_Exception
+ */
+ public function __construct($lowerTerm, $upperTerm, $inclusive)
+ {
+ if ($lowerTerm === null && $upperTerm === null) {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('At least one term must be non-null');
+ }
+ if ($lowerTerm !== null && $upperTerm !== null && $lowerTerm->field != $upperTerm->field) {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Both terms must be for the same field');
+ }
+
+ $this->_field = ($lowerTerm !== null)? $lowerTerm->field : $upperTerm->field;
+ $this->_lowerTerm = $lowerTerm;
+ $this->_upperTerm = $upperTerm;
+ $this->_inclusive = $inclusive;
+ }
+
+ /**
+ * Get query field name
+ *
+ * @return string|null
+ */
+ public function getField()
+ {
+ return $this->_field;
+ }
+
+ /**
+ * Get lower term
+ *
+ * @return Zend_Search_Lucene_Index_Term|null
+ */
+ public function getLowerTerm()
+ {
+ return $this->_lowerTerm;
+ }
+
+ /**
+ * Get upper term
+ *
+ * @return Zend_Search_Lucene_Index_Term|null
+ */
+ public function getUpperTerm()
+ {
+ return $this->_upperTerm;
+ }
+
+ /**
+ * Get upper term
+ *
+ * @return boolean
+ */
+ public function isInclusive()
+ {
+ return $this->_inclusive;
+ }
+
+ /**
+ * 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)
+ {
+ $this->_matches = array();
+
+ if ($this->_field === null) {
+ // Search through all fields
+ $fields = $index->getFieldNames(true /* indexed fields list */);
+ } else {
+ $fields = array($this->_field);
+ }
+
+ $maxTerms = Zend_Search_Lucene::getTermsPerQueryLimit();
+ foreach ($fields as $field) {
+ $index->resetTermsStream();
+
+ if ($this->_lowerTerm !== null) {
+ $lowerTerm = new Zend_Search_Lucene_Index_Term($this->_lowerTerm->text, $field);
+
+ $index->skipTo($lowerTerm);
+
+ if (!$this->_inclusive &&
+ $index->currentTerm() == $lowerTerm) {
+ // Skip lower term
+ $index->nextTerm();
+ }
+ } else {
+ $index->skipTo(new Zend_Search_Lucene_Index_Term('', $field));
+ }
+
+
+ if ($this->_upperTerm !== null) {
+ // Walk up to the upper term
+ $upperTerm = new Zend_Search_Lucene_Index_Term($this->_upperTerm->text, $field);
+
+ while ($index->currentTerm() !== null &&
+ $index->currentTerm()->field == $field &&
+// $index->currentTerm()->text < $upperTerm->text
+// WEZ: this actually needs to be lexigraphically searched
+ strcmp($index->currentTerm()->text, $upperTerm->text) < 0
+ ) {
+ $this->_matches[] = $index->currentTerm();
+
+ if ($maxTerms != 0 && count($this->_matches) > $maxTerms) {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Terms per query limit is reached.');
+ }
+
+ $index->nextTerm();
+ }
+
+ if ($this->_inclusive && $index->currentTerm() == $upperTerm) {
+ // Include upper term into result
+ $this->_matches[] = $upperTerm;
+ }
+ } else {
+ // Walk up to the end of field data
+ while ($index->currentTerm() !== null && $index->currentTerm()->field == $field) {
+ $this->_matches[] = $index->currentTerm();
+
+ if ($maxTerms != 0 && count($this->_matches) > $maxTerms) {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Terms per query limit is reached.');
+ }
+
+ $index->nextTerm();
+ }
+ }
+
+ $index->closeTermsStream();
+ }
+
+ if (count($this->_matches) == 0) {
+ return new Zend_Search_Lucene_Search_Query_Empty();
+ } else if (count($this->_matches) == 1) {
+ return new Zend_Search_Lucene_Search_Query_Term(reset($this->_matches));
+ } else {
+ $rewrittenQuery = new Zend_Search_Lucene_Search_Query_MultiTerm();
+
+ foreach ($this->_matches as $matchedTerm) {
+ $rewrittenQuery->addTerm($matchedTerm);
+ }
+
+ return $rewrittenQuery;
+ }
+ }
+
+ /**
+ * 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)
+ {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Range query should not be directly used for search. Use $query->rewrite($index)');
+ }
+
+ /**
+ * Return query terms
+ *
+ * @return array
+ * @throws Zend_Search_Lucene_Exception
+ */
+ public function getQueryTerms()
+ {
+ if ($this->_matches === null) {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Search or rewrite operations have to be performed before.');
+ }
+
+ return $this->_matches;
+ }
+
+ /**
+ * Constructs an appropriate Weight implementation for this query.
+ *
+ * @param Zend_Search_Lucene_Interface $reader
+ * @return Zend_Search_Lucene_Search_Weight
+ * @throws Zend_Search_Lucene_Exception
+ */
+ public function createWeight(Zend_Search_Lucene_Interface $reader)
+ {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Range query should not be directly used for search. Use $query->rewrite($index)');
+ }
+
+
+ /**
+ * 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
+ * @throws Zend_Search_Lucene_Exception
+ */
+ public function execute(Zend_Search_Lucene_Interface $reader, $docsFilter = null)
+ {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Range query should not be directly used for search. Use $query->rewrite($index)');
+ }
+
+ /**
+ * Get document ids likely matching the query
+ *
+ * It's an array with document ids as keys (performance considerations)
+ *
+ * @return array
+ * @throws Zend_Search_Lucene_Exception
+ */
+ public function matchedDocs()
+ {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Range query should not be directly used for search. Use $query->rewrite($index)');
+ }
+
+ /**
+ * Score specified document
+ *
+ * @param integer $docId
+ * @param Zend_Search_Lucene_Interface $reader
+ * @return float
+ * @throws Zend_Search_Lucene_Exception
+ */
+ public function score($docId, Zend_Search_Lucene_Interface $reader)
+ {
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('Range query should not be directly used for search. Use $query->rewrite($index)');
+ }
+
+ /**
+ * 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)
+ {
+ $words = array();
+
+ $docBody = $highlighter->getDocument()->getFieldUtf8Value('body');
+ $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($docBody, 'UTF-8');
+
+ $lowerTermText = ($this->_lowerTerm !== null)? $this->_lowerTerm->text : null;
+ $upperTermText = ($this->_upperTerm !== null)? $this->_upperTerm->text : null;
+
+ if ($this->_inclusive) {
+ foreach ($tokens as $token) {
+ $termText = $token->getTermText();
+ if (($lowerTermText == null || $lowerTermText <= $termText) &&
+ ($upperTermText == null || $termText <= $upperTermText)) {
+ $words[] = $termText;
+ }
+ }
+ } else {
+ foreach ($tokens as $token) {
+ $termText = $token->getTermText();
+ if (($lowerTermText == null || $lowerTermText < $termText) &&
+ ($upperTermText == null || $termText < $upperTermText)) {
+ $words[] = $termText;
+ }
+ }
+ }
+
+ $highlighter->highlight($words);
+ }
+
+ /**
+ * Print a query
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ // It's used only for query visualisation, so we don't care about characters escaping
+ return (($this->_field === null)? '' : $this->_field . ':')
+ . (($this->_inclusive)? '[' : '{')
+ . (($this->_lowerTerm !== null)? $this->_lowerTerm->text : 'null')
+ . ' TO '
+ . (($this->_upperTerm !== null)? $this->_upperTerm->text : 'null')
+ . (($this->_inclusive)? ']' : '}')
+ . (($this->getBoost() != 1)? '^' . round($this->getBoost(), 4) : '');
+ }
+}
+
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