From a92d7d7d37473502aab80ede8c3c3da2314aab0c Mon Sep 17 00:00:00 2001
From: Sandro Santilli <strk@keybit.net>
Date: Wed, 4 Jun 2014 10:28:48 +0200
Subject: [PATCH] Add cdb_extension_reload() utility function

---
 Makefile                                 |  1 +
 NEWS                                     |  4 ++++
 README.md                                |  6 ++++++
 scripts-available/CDB_ExtensionUtils.sql | 13 +++++++++++++
 4 files changed, 24 insertions(+)
 create mode 100644 scripts-available/CDB_ExtensionUtils.sql

diff --git a/Makefile b/Makefile
index 4ef7f6d..bd465bc 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,7 @@ CDBSCRIPTS = \
   scripts-available/CDB_SearchPath.sql \
   scripts-available/CDB_DDLTriggers.sql \
   scripts-available/CDB_ExtensionPost.sql \
+  scripts-available/CDB_ExtensionUtils.sql \
   $(END)
 
 UPGRADABLE = \
diff --git a/NEWS b/NEWS
index 5c35f67..5ac9b9b 100644
--- a/NEWS
+++ b/NEWS
@@ -13,6 +13,10 @@ Enhancements:
 
  - Include revision info in cdb_version() output (#34)
 
+New features:
+
+ - Add a cdb_extension_reload() function
+
 
 0.1.0 - 2014-05-23
 ------------------
diff --git a/README.md b/README.md
index 1d16e06..f1fd88f 100644
--- a/README.md
+++ b/README.md
@@ -95,3 +95,9 @@ to "V". Example to upgrade a 0.2.0dev version:
 ALTER EXTENSION cartodb UPDATE TO '0.2.0devnext';
 ALTER EXTENSION cartodb UPDATE TO '0.2.0dev';
 ```
+
+Starting with 0.2.0, the in-place reload can be done with an ad-hoc function:
+
+```sql
+SELECT cartodb.cdb_extension_reload();
+```
diff --git a/scripts-available/CDB_ExtensionUtils.sql b/scripts-available/CDB_ExtensionUtils.sql
new file mode 100644
index 0000000..853bd95
--- /dev/null
+++ b/scripts-available/CDB_ExtensionUtils.sql
@@ -0,0 +1,13 @@
+CREATE OR REPLACE FUNCTION cartodb.cdb_extension_reload() RETURNS void
+AS $$
+DECLARE
+  ver TEXT;
+  sql TEXT;
+BEGIN
+  ver := split_part(cartodb.cdb_version(), ' ', 1);
+  sql := 'ALTER EXTENSION cartodb UPDATE TO ''' || ver || 'next''';
+  EXECUTE sql;
+  sql := 'ALTER EXTENSION cartodb UPDATE TO ''' || ver || '''';
+  EXECUTE sql;
+END;
+$$ language 'plpgsql' VOLATILE;