resolve https://issues.apache.org/activemq/browse/AMQ-2659 - allow XAConnection/Session to be used without an XA transaction, defaults to auto_ack mode. Can still be only used transactionally with an XA transaction

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@983057 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/main/java/org/apache/activemq/ActiveMQXASession.java

@@ -69,7 +69,7 @@ public class ActiveMQXASession extends ActiveMQSession implements QueueSession,
     }
 
     public boolean getTransacted() throws JMSException {
-        return true;
+        return getTransactionContext().isInXATransaction();
     }
 
     public void rollback() throws JMSException {
@@ -96,19 +96,16 @@ public class ActiveMQXASession extends ActiveMQSession implements QueueSession,
         return new ActiveMQTopicSession(this);
     }
 
-    /**
-     * This is called before transacted work is done by
-     * the session.  XA Work can only be done when this
-     * XA resource is associated with an Xid.
-     *
-     * @throws JMSException not associated with an Xid
+    /*
+     * when there is no XA transaction it is auto ack
      */
+    public boolean isAutoAcknowledge() {
+      return true;
+    }
+    
     protected void doStartTransaction() throws JMSException {
-
-        if (!getTransactionContext().isInXATransaction()) {
-            throw new JMSException("Session's XAResource has not been enlisted in a distributed transaction.");
-        }
-
+        // allow non transactional auto ack work on an XASession
+        // Seems ok by the spec that an XAConnection can be used without an XA tx
     }
 
 }

activemq-core/src/test/java/org/apache/activemq/JMSXAConsumerTest.java

@@ -0,0 +1,50 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.activemq;
+
+import javax.jms.ConnectionFactory;
+import junit.framework.Test;
+
+/*
+ * allow an XA session to be used as an auto ack session when no XA transaction
+ * https://issues.apache.org/activemq/browse/AMQ-2659
+ */
+public class JMSXAConsumerTest extends JMSConsumerTest {
+
+    public static Test suite() {
+        return suite(JMSXAConsumerTest.class);
+    }
+
+    @Override
+    protected ConnectionFactory createConnectionFactory() throws Exception {
+        return new ActiveMQXAConnectionFactory("vm://localhost");
+    }
+
+    // some tests use transactions, these will not work unless an XA transaction is in place
+    // slip these
+    public void testPrefetch1MessageNotDispatched() throws Exception {
+    }
+
+    public void testRedispatchOfUncommittedTx() throws Exception {
+    }
+
+    public void testRedispatchOfRolledbackTx() throws Exception {
+    }
+
+    public void testMessageListenerOnMessageCloseUnackedWithPrefetch1StayInQueue() throws Exception {
+    }
+}