From be6535c536471feae1c16299d3d8121c9feabd5b Mon Sep 17 00:00:00 2001
From: icewing <icewing@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Tue, 11 Mar 2008 11:08:39 +0000
Subject: Marcus Povey <marcus@dushka.co.uk> * Added metadata/metastrings tag
 stuff. Lorks.

git-svn-id: https://code.elgg.org/elgg/trunk@151 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/annotations.php | 10 ++++++++++
 engine/lib/metadata.php    | 14 ++++++++++++--
 engine/lib/metastrings.php | 34 ++++++++++++++++++++++++++++++++++
 engine/schema/mysql.sql    |  2 +-
 4 files changed, 57 insertions(+), 3 deletions(-)
 create mode 100644 engine/lib/metastrings.php

diff --git a/engine/lib/annotations.php b/engine/lib/annotations.php
index 3a950568f..3ff8c0e69 100644
--- a/engine/lib/annotations.php
+++ b/engine/lib/annotations.php
@@ -240,6 +240,11 @@
 		
 		$time = time();
 		
+		// Add the metastring
+		$value = add_metastring($value);
+		if (!$value) return false;
+		
+		// If ok then add it
 		return insert_data("INSERT into {$CONFIG->dbprefix}annotations (object_id, object_type, name, value, value_type, owner_id, created, access_id) VALUES ($object_id,'$object_type','$name','$value','$value_type', $owner_id, $time, $access_id)");
 	}
 	
@@ -269,6 +274,11 @@
 		
 		$access = get_access_list();
 		
+		// Add the metastring
+		$value = add_metastring($value);
+		if (!$value) return false;
+		
+		// If ok then add it		
 		return update_data("UPDATE {$CONFIG->dbprefix}annotations set value='$value', value_type='$value_type', access_id=$access_id, owner_id=$owner_id where id=$annotation_id and name='$name' and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))");
 	}
 	
diff --git a/engine/lib/metadata.php b/engine/lib/metadata.php
index 56bb83990..105001535 100644
--- a/engine/lib/metadata.php
+++ b/engine/lib/metadata.php
@@ -136,8 +136,7 @@
 		
 		return 'tag';
 	}
-	
-	
+		
 	/**
 	 * Create a new metadata object, or update an existing one.
 	 *
@@ -177,6 +176,11 @@
 		}
 		else
 		{
+			// Add the metastring
+			$value = add_metastring($value);
+			if (!$value) return false;
+			
+			// If ok then add it
 			$id = insert_data("INSERT into {$CONFIG->dbprefix}metadata (object_id, object_type, name, value, value_type, owner_id, created, access_id) VALUES ($object_id,'$object_type','$name','$value','$value_type', $owner_id, $time, $access_id)");
 		}
 		
@@ -209,6 +213,12 @@
 		
 		$access = get_access_list();
 		
+		
+		// Add the metastring
+		$value = add_metastring($value);
+		if (!$value) return false;
+		
+		// If ok then add it
 		return update_data("UPDATE {$CONFIG->dbprefix}metadata set value='$value', value_type='$value_type', access_id=$access_id, owner_id=$owner_id where id=$id and name='$name' and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))");
 	}
 
diff --git a/engine/lib/metastrings.php b/engine/lib/metastrings.php
new file mode 100644
index 000000000..17c9a751b
--- /dev/null
+++ b/engine/lib/metastrings.php
@@ -0,0 +1,34 @@
+<?php
+	/**
+	 * Elgg metastrngs
+	 * Functions to manage object metastrings.
+	 * 
+	 * @package Elgg
+	 * @subpackage Core
+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
+	 * @author Marcus Povey <marcus@dushka.co.uk>
+	 * @copyright Curverider Ltd 2008
+	 * @link http://elgg.org/
+	 */
+
+
+	/**
+	 * Add a metastring.
+	 * It returns the id of the tag, whether by creating it or updating it.
+	 * 
+	 * @param string $tag The value (whatever that is) to be stored
+	 * @return mixed Integer tag or false.
+	 */
+	function add_metastring($tag)
+	{
+		global $CONFIG;
+		
+		$tag = sanitise_string($tag);
+		
+		$row = get_data_row("SELECT * from {$CONFIG->dbprefix}metastrings where tag='$tag' limit 1");
+		if ($row)
+			return $row->id;
+		
+		return insert_data("INSERT into {$CONFIG->dbprefix}metastrings (tag) values ('$tag')");
+	}
+?>
\ No newline at end of file
diff --git a/engine/schema/mysql.sql b/engine/schema/mysql.sql
index af910dc6d..ce3778d71 100644
--- a/engine/schema/mysql.sql
+++ b/engine/schema/mysql.sql
@@ -230,7 +230,7 @@ CREATE TABLE `prefix_metadata` (
 --
 CREATE TABLE `prefix_metastrings` (
 	`id` int(11) NOT NULL auto_increment,
-	`tag` text NOT NULL,
+	`tag` varchar(255) NOT NULL,
 	
 	PRIMARY KEY (`id`),
 	UNIQUE KEY (`tag`)
-- 
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