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94 lines
3.1 KiB
94 lines
3.1 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* @package chamilo.include.search
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*/
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/**
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* code
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*/
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require_once dirname(__FILE__) . '/../../global.inc.php';
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include_once 'xapian/XapianIndexer.class.php';
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/**
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* Class wrapper
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* @package chamilo.include.search
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*/
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class ChamiloIndexer extends XapianIndexer {
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/**
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* Set terms on search_did given
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*
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* @param string $terms_string Comma-separated list of terms from input form
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* @param string $prefix Search engine prefix
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* @param string $course_code Course code
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* @param string $tool_id Tool id from mainapi.lib.php
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* @param int $ref_id_high_level Main id of the entity to index (Ex. lp_id)
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* @param int $ref_id_second_level Secondary id of the entity to index (Ex. lp_item)
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* @param int $search_did Search engine document id from search_engine_ref table
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* @return boolean False on error or nothing to do, true otherwise
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*/
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function set_terms($terms_string, $prefix, $course_code, $tool_id, $ref_id_high_level, $ref_id_second_level, $search_did) {
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$terms_string = trim($terms_string);
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$terms = explode(',', $terms_string);
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array_walk($terms, 'trim_value');
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$stored_terms = $this->get_terms_on_db($prefix, $course_code, $tool_id, $ref_id_high_level);
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// don't do anything if no change, verify only at DB, not the search engine
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if ((count(array_diff($terms, $stored_terms)) == 0) && (count(array_diff($stored_terms, $terms)) == 0))
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return FALSE;
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require_once api_get_path(LIBRARY_PATH) . 'search/xapian/XapianQuery.php';
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// compare terms
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$doc = $this->get_document($search_did);
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$xapian_terms = xapian_get_doc_terms($doc, $prefix);
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$xterms = array();
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foreach ($xapian_terms as $xapian_term)
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$xterms[] = substr($xapian_term['name'], 1);
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$dterms = $terms;
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$missing_terms = array_diff($dterms, $xterms);
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$deprecated_terms = array_diff($xterms, $dterms);
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// save it to search engine
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foreach ($missing_terms as $term) {
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$this->add_term_to_doc($prefix . $term, $doc);
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}
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foreach ($deprecated_terms as $term) {
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$this->remove_term_from_doc($prefix . $term, $doc);
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}
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// don't do anything if no change
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if ((count($missing_terms) > 0) || (count($deprecated_terms) > 0)) {
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$this->replace_document($doc, (int) $search_did);
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}
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return TRUE;
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}
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/**
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* Get the terms stored at database
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* @return array Array of terms
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*/
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function get_terms_on_db($prefix, $course_code, $tool_id, $ref_id) {
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require_once api_get_path(LIBRARY_PATH) . 'specific_fields_manager.lib.php';
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$terms = get_specific_field_values_list_by_prefix($prefix, $course_code, $tool_id, $ref_id);
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$prefix_terms = array();
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foreach ($terms as $term) {
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$prefix_terms[] = $term['value'];
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}
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return $prefix_terms;
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}
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}
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if (!function_exists('trim_value')) {
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function trim_value(&$value) {
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$value = trim($value);
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}
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}
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