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