From d568a1e9fd63c97eb86cd84a51bb6770747ec37c Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Sat, 17 Jan 2009 00:52:50 +0000
Subject: Implement relevance ranked boolean searching on a full text index of
 item and comment data.  Whew!

It's not pretty yet.  And you have to manually update the index
currently in admin/maintenance.  But it works.
---
 modules/search/helpers/search_task.php | 61 ++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 modules/search/helpers/search_task.php

(limited to 'modules/search/helpers/search_task.php')

diff --git a/modules/search/helpers/search_task.php b/modules/search/helpers/search_task.php
new file mode 100644
index 00000000..5291a27b
--- /dev/null
+++ b/modules/search/helpers/search_task.php
@@ -0,0 +1,61 @@
+
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2008 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class search_task_Core {
+  static function available_tasks() {
+    list ($remaining, $total, $percent) = self::_get_stats();
+    return array(Task_Definition::factory()
+                 ->callback("search_task::update_index")
+                 ->name(t("Update Search Index"))
+                 ->description($remaining ?
+                               t("Search index is %percent% up-to-date",
+                                 array("percent" => $percent))
+                               : t("Search index is up to date"))
+                 ->severity($remaining ? log::WARNING : log::SUCCESS));
+  }
+
+  static function update_index($task) {
+    $completed = $task->get("completed", 0);
+    foreach (ORM::factory("search_record")->where("dirty", 1)->limit(2)->find_all() as $record) {
+      search::update_record($record);
+      $completed++;
+    }
+    $task->set("completed", $completed);
+
+    list ($remaining, $total, $percent) = self::_get_stats();
+    $task->percent_complete = round(100 * $completed / ($remaining + $completed));
+
+    $task->status = t("%done records records updated, index is %percent% up-to-date",
+                      array("done" => $completed, "percent" => $percent));
+
+    if ($remaining == 0) {
+      $task->done = true;
+      $task->state = "success";
+      site_status::clear("search_index_out_of_date");
+    }
+  }
+
+  private static function _get_stats() {
+    $remaining = ORM::factory("search_record")->where("dirty", 1)->count_all();
+    $total = ORM::factory("search_record")->count_all();
+    $percent = round(100 * ($total - $remaining) / $total);
+    return array($remaining, $total, $percent);
+  }
+}
-- 
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