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<?php
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// $Id: field_indexer.module,v 1.7 2009/01/05 01:30:46 davidlesieur Exp $
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/**
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* @file
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* Indexes field content for use by modules that implement field search.
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*/
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/**
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* Implementation of hook_menu().
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*/
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function field_indexer_menu() {
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$items = array();
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$items['admin/settings/field_indexer'] = array(
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'title' => 'Field indexer',
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'access callback' => 'user_access',
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'access arguments' => array('administer search'),
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'description' => 'Enable fields for use by field searches.',
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'page callback' => 'drupal_get_form',
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'page arguments' => array('field_indexer_admin'),
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'file' => 'field_indexer.admin.inc',
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);
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return $items;
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}
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/**
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* Update the full-text search index for a particular field value.
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*
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* @param $nid
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* Id of the node containing the value.
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* @param $fiid
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* Id of the field containing the value.
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* @param $text
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* The content of the field. Must be a piece of HTML text.
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*/
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function field_indexer_index($nid, $fiid, $text) {
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search_index($nid, field_indexer_type($fiid), $text);
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}
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/**
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* Mark all nodes for re-indexing.
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*/
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function field_indexer_reindex() {
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node_search('reset');
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}
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/**
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* Delete index entries for the specified field.
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*/
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function field_indexer_wipe($fiid) {
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$type = field_indexer_type($fiid);
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db_query("DELETE FROM {search_dataset} WHERE type = '%s'", $type);
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db_query("DELETE FROM {search_index} WHERE type = '%s'", $type);
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db_query("DELETE FROM {search_node_links} WHERE type = '%s'", $type);
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}
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/**
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* Retrieve a fresh list of fields that are exposed by modules for indexing.
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*/
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function field_indexer_find_fields() {
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$fields = array();
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foreach (module_implements('field_indexer_list') as $module) {
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$module_fields = module_invoke($module, 'field_indexer_list');
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foreach ($module_fields as $field) {
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// Add the field.
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$fields[_field_indexer_key($field)] = $field;
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}
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}
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return $fields;
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}
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/**
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* Retrieve the fields settings from the database.
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*
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* @param $status
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* Optional status of the fields to be returned (TRUE for fields that are
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* enabled for indexing, FALSE for fields that are not being indexed). When
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* set, only fields with the given status are returned. When not set, all
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* indexable fields are returned.
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* @param $namespace
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* Optional namespace of whose fields we are interested in. When not
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* specified, all indexable fields are returned.
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* @return
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* An array describing the fields.
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*/
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function field_indexer_load_fields($status = NULL, $namespace = NULL) {
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$where = array();
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$args = array();
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if (isset($status)) {
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$where[] = 'status = %d';
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$args[] = $status ? 1 : 0;
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}
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if (isset($namespace)) {
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$where[] = "namespace = '%s'";
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$args[] = $namespace;
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}
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if (count($where)) {
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$where = ' WHERE '. implode(' AND ', $where);
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}
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else {
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$where = '';
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}
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$fields = array();
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$results = db_query('SELECT * FROM {field_indexer_map}'. $where, $args);
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while ($field = db_fetch_array($results)) {
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$fields[_field_indexer_key($field)] = $field;
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}
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return $fields;
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}
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/**
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* Return the index type of the specified field.
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*/
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function field_indexer_type($fiid) {
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return 'field_'. $fiid;
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}
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/**
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* Return a unique key for a field. This is useful when collecting fields whose
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* fiid have not yet been assigned.
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*/
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function _field_indexer_key($field) {
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return $field['namespace'] .'_'. $field['name'] .'_'. $field['extra_name'];
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}
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