Author: norman
Date: Thu Mar 18 17:19:10 2010
New Revision: 924905
URL: http://svn.apache.org/viewvc?rev=924905&view=rev
Log:
Close EntityManager after each request to free up resources (IMAP-116)
Added:
james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/JPAUtils.java
Added:
james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/JPAUtils.java
URL:
http://svn.apache.org/viewvc/james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/JPAUtils.java?rev=924905&view=auto
==============================================================================
--- james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/JPAUtils.java
(added)
+++ james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/JPAUtils.java
Thu Mar 18 17:19:10 2010
@@ -0,0 +1,71 @@
+/****************************************************************
+ * 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.james.imap.jpa;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.persistence.EntityManager;
+
+import org.apache.james.imap.mailbox.MailboxSession;
+
+/**
+ * Utilities for JPA
+ *
+ */
+public class JPAUtils {
+
+ public static final String ENTITYMANAGERS = "ENTITYMANAGERS";
+
+ /**
+ * Return a List of EntityManagers for the given MailboxSession
+ *
+ * @param session
+ * @return managerList
+ */
+ @SuppressWarnings("unchecked")
+ public static List<EntityManager> getEntityManagers(MailboxSession
session) {
+ List<EntityManager> managers = null;
+ if (session != null) {
+ managers = (List<EntityManager>)
session.getAttributes().get(ENTITYMANAGERS);
+ }
+ if (managers == null) {
+ managers = new ArrayList<EntityManager>();
+ }
+ return managers;
+ }
+
+ /**
+ * Add the EntityManager to the MailboxSession
+ *
+ * @param session
+ * @param manager
+ */
+ @SuppressWarnings("unchecked")
+ public static void addEntityManager(MailboxSession session, EntityManager
manager) {
+ if (session != null) {
+ List<EntityManager> managers = (List<EntityManager>)
session.getAttributes().get(ENTITYMANAGERS);
+ if (managers == null) {
+ managers = new ArrayList<EntityManager>();
+ }
+ managers.add(manager);
+ session.getAttributes().put(ENTITYMANAGERS, managers);
+ }
+ }
+}
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