From 0f3803d111b81580ae5ff7bc600a610e3bf20fd9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Bon=C3=A9r?= <jonasremove@jonasboner.com>
Date: Wed, 14 Apr 2010 20:47:19 +0200
Subject: [PATCH] Added AtomicTemplate to allow atomic blocks from Java code

---
 .../src/main/scala/stm/Transaction.scala      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/akka-core/src/main/scala/stm/Transaction.scala b/akka-core/src/main/scala/stm/Transaction.scala
index 16a3cd0e5f..209c131781 100644
--- a/akka-core/src/main/scala/stm/Transaction.scala
+++ b/akka-core/src/main/scala/stm/Transaction.scala
@@ -22,6 +22,25 @@ import org.multiverse.stms.alpha.AlphaStm
 class NoTransactionInScopeException extends RuntimeException
 class TransactionRetryException(message: String) extends RuntimeException(message)
 
+/**
+ * FIXDOC: document AtomicTemplate
+ * AtomicTemplate can be used to create atomic blocks from Java code.
+ * <pre>
+ * User newUser = new AtomicTemplate[User]() {
+ *   User atomic() {
+ *     ... // create user atomically
+ *     return user;
+ *   }
+ * }.execute();
+ * </pre>
+ */
+trait AtomicTemplate[T] {
+  def atomic: T
+  def execute: T = Transaction.Local.atomic {
+    atomic
+  }
+}
+
 object Transaction {
   val idFactory = new AtomicLong(-1L)