From b35e8cbe9e9776d86be034365c1033b61497bbb0 Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Tue, 23 Sep 2008 17:27:09 +0000
Subject: The database schema will now automatically update itself on upgrade.

git-svn-id: https://code.elgg.org/elgg/trunk@2107 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/database.php | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 46 insertions(+), 1 deletion(-)

(limited to 'engine/lib/database.php')

diff --git a/engine/lib/database.php b/engine/lib/database.php
index a071a4f6f..f1b4a5871 100644
--- a/engine/lib/database.php
+++ b/engine/lib/database.php
@@ -400,7 +400,11 @@
         			$statement = trim($statement);
         			$statement = str_replace("prefix_",$CONFIG->dbprefix,$statement);
         			if (!empty($statement)) {
-        				$result = update_data($statement);
+        				try {
+        					$result = update_data($statement);
+        				} catch (DatabaseException $e) {
+        					$errors[] = $e->getMessage();
+        				}
         			}
         		}
         		if (!empty($errors)) {
@@ -414,6 +418,47 @@
         		throw new DatabaseException(sprintf(elgg_echo('DatabaseException:ScriptNotFound'), $scriptlocation));
         	}
         	
+        }
+        
+        function db_upgrade($version) {
+        	
+        	global $CONFIG;
+        	
+        	// Elgg and its database must be installed to upgrade it!
+        	if (!is_db_installed() || !is_installed()) return false;
+        	
+        	$version = (int) $version;
+        	
+        	if ($handle = opendir($CONFIG->path . 'engine/schema/upgrades/')) {
+        		
+        		$sqlupgrades = array();
+        		
+        		while ($sqlfile = readdir($handle)) {
+        			
+        			if (!is_dir($CONFIG->path . 'engine/schema/upgrades/' . $sqlfile)) {
+        				if (preg_match('/([0-9]*)\.sql/',$sqlfile,$matches)) {
+        					$sql_version = (int) $matches[1];
+        					if ($sql_version > $version) {
+        						$sqlupgrades[] = $sqlfile;
+        					}
+        				}
+        			}
+        			
+        		}
+        		
+        		asort($sqlupgrades);
+        		if (sizeof($sqlupgrades) > 0) {
+        			foreach($sqlupgrades as $sqlfile) {
+        				try {
+        					run_sql_script($CONFIG->path . 'engine/schema/upgrades/' . $sqlfile);
+        				} catch (DatabaseException $e) {
+        					error_log($e->getmessage());
+        				}
+        			}
+        		}
+        		
+        	}
+        	
         }
         
         /**
-- 
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