From f9aa70c258578d907cdeb1e9d5b26fffca5bede6 Mon Sep 17 00:00:00 2001
From: brettp <brettp@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 9 Oct 2009 19:33:33 +0000
Subject: Pulled in Justin's search changes from github.

git-svn-id: http://code.elgg.org/elgg/trunk@3520 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 mod/search/start.php | 117 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 mod/search/start.php

(limited to 'mod/search/start.php')

diff --git a/mod/search/start.php b/mod/search/start.php
new file mode 100644
index 000000000..a434fc2b5
--- /dev/null
+++ b/mod/search/start.php
@@ -0,0 +1,117 @@
+<?php
+
+	/**
+	 * Elgg core search.
+	 * 
+	 * @package Elgg
+	 * @subpackage Core
+	 * @author Curverider Ltd <info@elgg.com>
+	 * @link http://elgg.org/
+	 */
+
+	/**
+	 * Initialise search helper functions.
+	 *
+	 */
+	function search_init() {
+		global $CONFIG;
+
+		// page handler for search actions and results
+		register_page_handler('search','search_page_handler');
+
+		// hook into the search callback to use the metadata system (this is the part that will go away!)
+		register_plugin_hook('search:entities', 'all', 'search_original_hook');
+
+		// list of available search types should include our base parts
+		register_plugin_hook('searchtypes', 'all', 'search_base_search_types_hook');
+
+		// add in CSS for search elements
+		extend_view('css', 'search/css');
+	}
+	
+	/**
+	 * Page handler for search
+	 *
+	 * @param array $page Page elements from pain page handler
+	 */
+	function search_page_handler($page) {
+		global $CONFIG;
+		
+		if(!get_input('tag')) {
+			set_input('tag', $page[0]);	
+		}
+
+		include_once($CONFIG->path . "mod/search/index.php");
+	}
+
+	/**
+	 * Core search hook.
+	 * Returns an object with two parts:
+	 *    ->entities: an array of instantiated entities that have been decorated with 
+	 *                volatile "search" data indicating what they matched. These are
+	 *                the entities to be displayed to the user on this page.
+	 *    ->total:    total number of entities overall. This function can update this
+	 *                limit to ask for more pages in the pagination.
+	 */
+	function search_original_hook($hook, $type, $returnvalue, $params) {
+	    	$tag = $params['tag'];
+		$offset = $params['offset']; // starting page
+		$limit = $params['limit']; // number per page
+		$searchtype = $params['searchtype']; // the search type we're looking for
+		$object_type = $params['object_type'];
+		$subtype = $params['subtype'];
+		$owner_guid = $params['owner_guid'];
+		$tagtype = $params['tagtype'];
+		
+		$count = get_entities_from_metadata($tagtype, elgg_strtolower($tag), $object_type, $subtype, $owner_guid, $limit, $offset, "", 0, true); 
+		$ents =  get_entities_from_metadata($tagtype, elgg_strtolower($tag), $object_type, $subtype, $owner_guid, $limit, $offset, "", 0, false);	
+
+
+		/*
+		 * Foreach entity
+		 *	get the metadata keys
+		 *	If the value matches, hang onto the key
+		 *	add all the matched keys to VolatileData
+		 *   This tells us *why* each entity matched
+		 */
+		foreach ($ents as $ent) {
+		    	$metadata = get_metadata_for_entity($ent->getGUID());
+			$matched = array();
+			if ($metadata) {
+				foreach ($metadata as $tuple) {
+					if ($tag === $tuple->value) {
+						// This is one of the matching elements
+						$matched[] = $tuple->name;
+					}
+				}
+				$ent->setVolatileData("search", $matched);
+			}
+		}
+
+		// merge in our entities with any coming in from elsewhere
+		$returnvalue->entities = array_merge($returnvalue->entities, $ents);
+
+		// expand the total entity count if necessary
+		if ($count > $returnvalue->total) {
+		    	$returnvalue->total = $count;
+		}
+
+		return $returnvalue;
+	}
+
+        /**
+	 * return our base search types
+	 */
+        function search_base_search_types_hook($hook, $type, $returnvalue, $params) {
+	    if (!is_array($returnvalue)) {
+		$returnvalue = array();
+	    }
+
+	    return $returnvalue;
+	}
+
+	/** Register init system event **/
+
+	register_elgg_event_handler('init','system','search_init');
+
+?>
-- 
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