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297 lines
12 KiB
297 lines
12 KiB
<?php |
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/** |
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* @file |
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* Implementation of Roblib search for searching several targets. |
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*/ |
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/** |
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* Implements hook_boot(). |
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* @global type $conf |
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*/ |
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function roblib_search_evergreen_boot() { |
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/* below is an example from islandora_solr module for internationalization |
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* global $conf; |
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// Allow i18n, by using multilingual variables. |
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if (module_exists('i18n')) { |
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$vars = array( |
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'islandora_solr_facets', |
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'islandora_solr_result_fields', |
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'islandora_solr_searchterms' |
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); |
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if (isset($conf['i18n_variables']) && is_array($conf['i18n_variables'])) { |
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$conf['i18n_variables'] = array_merge($vars, $conf['i18n_variables']); |
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} |
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else { |
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$conf['i18n_variables'] = $vars; |
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} |
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} */ |
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} |
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/** |
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* Implements hook_menu(). |
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*/ |
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function roblib_search_evergreen_menu() { |
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$items = array(); |
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$items['admin/roblib_search/evergreen_search'] = array( |
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'title' => 'Evergreen Search Target configuration', |
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'description' => 'Configuration for the Roblib evergreen search target', |
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'page callback' => 'drupal_get_form', |
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'page arguments' => array('roblib_search_evergreen_config_form'), |
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'access arguments' => array('access administration pages'), |
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'type' => MENU_NORMAL_ITEM, |
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); |
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$items['roblib_search/evergreen/ajax/%'] = array( |
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'title' => 'evergreen ajax', |
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'page callback' => 'roblib_search_evergreen_ajax', |
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'page arguments' => array(3), |
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'type' => MENU_CALLBACK, |
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'access arguments' => array('search roblib evergreen'), |
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); |
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return $items; |
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} |
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function roblib_search_evergreen_config_form($form, &$form_state) { |
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/* |
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* $url = variable_get('roblib_search_evergreen_url', 'http://137.149.200.52'); |
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$url_suffix = variable_get('roblib_search_evergreen_suffix', '/opac/extras/sru?version=1.1&operation=searchRetrieve&query='); |
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$number_of_records = variable_get('roblib_search_evergreen_num_results', '5'); |
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*/ |
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$form['roblib_search_evergreen_url'] = array( |
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'#type' => 'textfield', |
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'#title' => t('Evergreen url'), |
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'#default_value' => variable_get('roblib_search_evergreen_url', 'http://islandpines.roblib.upei.ca/'), |
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'#description' => t('The base Evergreen URL, for example http://islandpines.roblib.upei.ca/'), |
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'#required' => TRUE, |
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); |
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$form['roblib_search_evergreen_search_suffix'] = array( |
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'#type' => 'textfield', |
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'#title' => t('Evergreen search suffix'), |
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'#default_value' => variable_get('roblib_search_evergreen_search_suffix', '/opac/extras/sru?version=1.1&operation=searchRetrieve&query='), |
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'#description' => t('The suffix will be appended to the base url for searches, for example /opac/extras/sru?version=1.1&operation=searchRetrieve&query='), |
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'#required' => TRUE, |
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); |
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$form['roblib_search_evergreen_detail_suffix'] = array( |
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'#type' => 'textfield', |
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'#title' => t('Evergreen detail suffix'), |
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'#default_value' => variable_get('roblib_search_evergreen_detail_suffix', '/opac/en-CA/skin/default/xml/rdetail.xml?r='), |
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'#description' => t('The suffix will be appended to the base url when creating links to the Evergreen detail page, for example, /opac/en-CA/skin/default/xml/rdetail.xml?r='), |
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'#required' => TRUE, |
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); |
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//http://islandpines.roblib.upei.ca/opac/en-CA/skin/roblib/xml/rresult.xml?rt=keyword&tp=keyword&t= |
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$form['roblib_search_evergreen_catalog_base_search_url'] = array( |
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'#type' => 'textfield', |
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'#title' => t('Evergreen catalog base search url'), |
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'#default_value' => variable_get('roblib_search_evergreen_catalog_base_search_url', 'http://islandpines.roblib.upei.ca/opac/en-CA/skin/roblib/xml/rresult.xml?rt=keyword&tp=keyword&t='), |
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'#description' => t('The Catalog base url so we can repeat the search in the catalog, for example, http://islandpines.roblib.upei.ca/opac/en-CA/skin/roblib/xml/rresult.xml?rt=keyword&tp=keyword&t='), |
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'#required' => TRUE, |
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); |
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$form['roblib_search_evergreen_num_results'] = array( |
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'#type' => 'textfield', |
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'#title' => t('Number of results to return'), |
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'#default_value' => variable_get('roblib_search_evergreen_num_results', '5'), |
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'#description' => t('The number of results to display in the Bento box'), |
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'#required' => TRUE, |
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); |
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return system_settings_form($form); |
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} |
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/** |
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* Implements hook_permission(). |
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*/ |
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function roblib_search_evergreen_permission() { |
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return array( |
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'search roblib evergreen' => array( |
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'title' => t('Search the evergreen target'), |
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'description' => t('Search all Roblib evergreen target. This permission exposes the search blocks and allows you to see search results.'), |
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), |
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'administer roblib search_evergreen' => array( |
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'title' => t('Administer Roblib Search Evergreen'), |
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'description' => t('Administer settings for the Roblib evergreen search client.'), |
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), |
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); |
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} |
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/** |
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* Implements hook_theme(). |
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*/ |
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function roblib_search_evergreen_theme() { |
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// set path |
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$path = drupal_get_path('module', 'roblib_search_evergreen'); |
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$file = 'theme.inc'; |
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return array( |
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// results page |
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'roblib_search_evergreen' => array( |
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'path' => $path . '/theme', |
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'file' => $file, |
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'template' => 'roblib-search-evergreen', |
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'variables' => array('results' => NULL), |
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) |
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); |
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} |
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function roblib_search_evergreen_block_info() { |
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$blocks['roblib_search_evergreen_results'] = array( |
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// info: The name of the block. |
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'info' => t('Evergreen Search Results block'), |
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// Block caching options (per role, per user, etc.) |
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'cache' => DRUPAL_CACHE_PER_ROLE, // default |
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); |
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return $blocks; |
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} |
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function roblib_search_evergreen_block_view($delta = '') { |
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//The $delta parameter tells us which block is being requested. |
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switch ($delta) { |
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case 'roblib_search_evergreen_results': |
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// The subject is displayed at the top of the block. Note that it |
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// should be passed through t() for translation. The title configured |
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// for the block using Drupal UI supercedes this one. |
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$block['subject'] = t('Evergreen Results'); |
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// The content of the block is typically generated by calling a custom |
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// function. |
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$block['content'] = theme('roblib_search_evergreen', array('results' => NULL)); |
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break; |
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} |
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return $block; |
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} |
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function roblib_search_evergreen_ajax($query) { |
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$output = roblib_search_evergreen_get_results($query); |
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print $output; |
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exit(); |
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} |
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/** |
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* |
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* @param string $query |
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* @return string |
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* json |
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*/ |
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function roblib_search_evergreen_get_results($query) { |
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drupal_add_css(drupal_get_path('module', 'roblib_search_evergreen') . '/css/roblib_search_evergreen.theme.css'); |
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$url = variable_get('roblib_search_evergreen_url', 'http://137.149.200.52'); |
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$url_suffix = variable_get('roblib_search_evergreen_search_suffix', '/opac/extras/sru?version=1.1&operation=searchRetrieve&query='); |
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$number_of_records = variable_get('roblib_search_evergreen_num_results', '5'); |
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$query = str_replace(' ', '%20AND%20',$query);//hack until the library decides if we want phrase or individual words |
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$search_url = $url . $url_suffix . $query . '&maximumRecords=' . $number_of_records; |
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$catalog_base_search_url = variable_get('roblib_search_evergreen_catalog_base_search_url', 'http://islandpines.roblib.upei.ca/opac/en-CA/skin/roblib/xml/rresult.xml?rt=keyword&tp=keyword&t='); |
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drupal_add_js(array('roblib_search_evergreen' => array('catalog_url' => $catalog_base_search_url)), array('type' => 'setting')); |
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$results = drupal_http_request($search_url); |
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if ($results->code == '200') { |
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$output = roblib_search_evergreen_parse_results($results, $query); |
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} |
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else { |
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$output = 'Error retrieving Evergreen results ' . $results->status_message; |
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} |
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return json_encode($output); |
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} |
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/** |
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* |
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* @param string $results |
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* results in marcxml |
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* @return array $output |
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* information we want from the xml stored in an array |
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*/ |
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function roblib_search_evergreen_parse_results($results, $query) { |
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$xml = $results->data; |
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if (!isset($xml)) { |
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return 'no results found'; |
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} |
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$sxml = simplexml_load_string(trim($results->data)); |
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$output = array(); |
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if ($sxml) { |
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$sxml->registerXPathNamespace('marcxml', 'http://www.loc.gov/MARC21/slim'); |
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$sxml->registerXPathNamespace('srw', 'http://www.loc.gov/zing/srw/'); |
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$number_of_records = $sxml->xpath('//srw:numberOfRecords'); |
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$output['numberOfRecords'] = (string)$number_of_records[0]; |
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$catalog_base_search_url = variable_get('roblib_search_evergreen_catalog_base_search_url', 'http://islandpines.roblib.upei.ca/opac/en-CA/skin/roblib/xml/rresult.xml?rt=keyword&tp=keyword&t='); |
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$catalog_base_search_url .= $query; |
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$output['catalogBaseSearchUrl'] = $catalog_base_search_url; |
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$records = $sxml->xpath('//marcxml:record'); |
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//$records = $sxml->xpath('//marcxml:record/marcxml:recordData/marcxml:record/marcxml:datafield[@tag="245"]/marcxml:subfield[@code="a"]'); |
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$index = 0; |
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foreach ($records as $record) { |
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$record->registerXPathNamespace('marcxml', 'http://www.loc.gov/MARC21/slim'); |
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roblib_search_evergreen_update_array($output, $index, 'title', $record->xpath('marcxml:datafield[@tag="245"]/marcxml:subfield[@code="a"]')); |
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roblib_search_evergreen_update_array($output, $index, 'subtitle', $record->xpath('marcxml:datafield[@tag="245"]/marcxml:subfield[@code="b"]')); |
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roblib_search_evergreen_update_array($output, $index, 'sor', $record->xpath('marcxml:datafield[@tag="245"]/marcxml:subfield[@code="c"]')); |
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roblib_search_evergreen_update_array($output, $index, 'date', $record->xpath('marcxml:datafield[@tag="260"]/marcxml:subfield[@code="c"]')); |
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roblib_search_evergreen_update_array($output, $index, 'id', $record->xpath('marcxml:datafield[@tag="901"]/marcxml:subfield[@code="c"]')); |
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roblib_search_evergreen_holdings($output, $index, $record->xpath('marcxml:datafield[@tag="852"]')); |
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roblib_search_evergreen_electronic_holdings($output, $index, $record->xpath('marcxml:datafield[@tag="856"]')); |
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$id = $output[$index]['id']; |
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$output[$index++]['url'] = variable_get('roblib_search_evergreen_url', 'http://137.149.200.52') |
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. variable_get('roblib_search_evergreen_detail_suffix', '/opac/en-CA/skin/default/xml/rdetail.xml?r=') |
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. (string)$id; |
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} |
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} |
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return $output; |
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} |
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function roblib_search_evergreen_holdings(&$arr, $index, $xpath_result){ |
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$holding_index = 0; |
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foreach($xpath_result as $xml){ |
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$xml->registerXPathNamespace('marcxml', 'http://www.loc.gov/MARC21/slim'); |
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$call_number = $xml->xpath('marcxml:subfield[@code="c"]'); |
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$arr[$index]['holdings'][$holding_index]['call_number'] = (string)$call_number[0]; |
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$availability = $xml->xpath('marcxml:subfield[@code="n"]'); |
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$arr[$index]['holdings'][$holding_index]['availability'] = (string)$availability[0]; |
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$location = $xml->xpath('marcxml:subfield[@code="a"]'); |
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$arr[$index]['holdings'][$holding_index++]['location'] = (string)$location[0]; |
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} |
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} |
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function roblib_search_evergreen_electronic_holdings(&$arr, $index, $xpath_result){ |
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$holding_index = 0; |
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foreach($xpath_result as $xml){ |
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$xml->registerXPathNamespace('marcxml', 'http://www.loc.gov/MARC21/slim'); |
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$label = $xml->xpath('marcxml:subfield[@code="y"]'); |
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$label = (string)$label[0]; |
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$url = $xml->xpath('marcxml:subfield[@code="u"]'); |
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$url = (string)$url[0]; |
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$arr[$index]['electronic_holdings'][$holding_index]['url'] = $url; |
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$arr[$index]['electronic_holdings'][$holding_index++]['label'] = $label; |
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} |
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} |
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function roblib_search_evergreen_update_array(&$arr, $index, $key, $xpath_result){ |
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if(!empty($xpath_result)){ |
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$val = (string)$xpath_result[0]; |
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$arr[$index][$key] = $val; |
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} |
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} |
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/** |
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* Implements hook_help(). |
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* |
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* @param type $path |
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* @param type $arg |
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* @return type |
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*/ |
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function roblib_search_evergreen_help($path, $arg) { |
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switch ($path) { |
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case 'admin/help#roblib_search_evergreen': |
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return t( |
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'<p> |
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provides a target for the Roblib search module |
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</p>' |
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); |
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} |
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} |
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