From: Alexander Ebert <ebert@woltlab.com>
Date: Sun, 21 Sep 2014 14:50:12 +0000 (+0200)
Subject: Added support for 'DROP FOREIGN KEY'
X-Git-Tag: 2.1.0_Alpha_1~306
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=245424a42794a8fa741b6fe86b78f2dda0a51e93;p=GitHub%2FWoltLab%2FWCF.git

Added support for 'DROP FOREIGN KEY'
---

diff --git a/wcfsetup/install/files/lib/system/database/util/SQLParser.class.php b/wcfsetup/install/files/lib/system/database/util/SQLParser.class.php
index 439ef7b2a9..433f364eb2 100644
--- a/wcfsetup/install/files/lib/system/database/util/SQLParser.class.php
+++ b/wcfsetup/install/files/lib/system/database/util/SQLParser.class.php
@@ -157,6 +157,10 @@ class SQLParser {
 				else if (preg_match('~^ALTER\s+TABLE\s+(\w+)\s+DROP\s+(?:INDEX|KEY)\s+(\w+)~is', $query, $match)) {
 					$this->executeDropIndexStatement($match[1], $match[2]);
 				}
+				// drop foreign key
+				else if (preg_match('~^ALTER\s+TABLE\s+(\w+)\s+DROP\s+FOREIGN KEY\s+(\w+)~is', $query, $match)) {
+					$this->executeDropForeignKeyStatement($match[1], self::getGenericIndexName($match[1], $match[2], 'fk'));
+				}
 				// drop column
 				else if (preg_match('~^ALTER\s+TABLE\s+(\w+)\s+DROP\s+(?:COLUMN\s+)?(\w+)~is', $query, $match)) {
 					$this->executeDropColumnStatement($match[1], $match[2]);
@@ -278,6 +282,16 @@ class SQLParser {
 		WCF::getDB()->getEditor()->dropIndex($tableName, $indexName);
 	}
 	
+	/**
+	 * Executes a 'DROP FOREIGN KEY' statement.
+	 * 
+	 * @param	string		$tableName
+	 * @param	string		$indexName
+	 */
+	protected function executeDropForeignKeyStatement($tableName, $indexName) {
+		WCF::getDB()->getEditor()->dropForeignKey($tableName, $indexName);
+	}
+	
 	/**
 	 * Executes a 'DROP TABLE' statement.
 	 *