JPA 2.2 Readme
JSR 338 (distributed under the license on that page) is packaged in an OSGi format for distribution with the EclipseLink Project which is the reference implementation of the JPA 2.2 specification.
The source code is available within the project's javax.persistence Git repository. The binaries are distributed in OSGi enabled javax.persistence_2.2.*.jar series bundles.
JSR Readme.txt follows:
Copyright (c) 2008, 2018 Oracle and/or its affiliates. All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v. 2.0 which is available at http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License v. 1.0 which is available at http://www.eclipse.org/org/documents/edl-v10.php. SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause Contributors: Linda DeMichiel - Java Persistence 2.2 Lukas Jungmann - Java Persistence 2.2 Specification available from http://jcp.org/en/jsr/detail?id=338 Oracle Committers - EclipseLink specific implementations and OSGi support Oracle Committers - Misc Bugfixes Java(TM) Persistence API, Version 2.2