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Adding a new sample to demonstrate unsynchronized PC
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Lines changed: 393 additions & 1 deletion

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‎jpa/pom.xml‎

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<module>entitygraph</module>
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<module>listeners</module>
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<module>multiple-pu</module>
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<module>schema-gen-metadata</module>
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<module>storedprocedure</module>
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<module>jndi-context</module>
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<module>locking-optimistic</module>
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<module>locking-pessimistic</module>
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<module>pu-typesafe</module>
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<module>schema-gen-metadata</module>
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<module>schema-gen-scripts</module>
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<module>schema-gen-scripts-external</module>
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<module>schema-gen-scripts-generate</module>
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<module>native-sql</module>
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<module>native-sql-resultset-mapping</module>
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<module>unsynchronized-pc</module>
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</modules>
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</project>

‎jpa/unsynchronized-pc/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.javaee7.jpa</groupId>
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<artifactId>jpa-samples</artifactId>
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<version>1.0-SNAPSHOT</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<artifactId>unsynchronized-pc</artifactId>
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<packaging>war</packaging>
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</project>

‎jpa/unsynchronized-pc/src/main/java/org/javaee7/jpa/unsynchronized/pc/Employee.java‎

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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
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*
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* The contents of this file are subject to the terms of either the GNU
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* General Public License Version 2 only ("GPL") or the Common Development
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* and Distribution License("CDDL") (collectively, the "License"). You
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* may not use this file except in compliance with the License. You can
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* obtain a copy of the License at
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* http://glassfish.java.net/public/CDDL+GPL_1_1.html
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* or packager/legal/LICENSE.txt. See the License for the specific
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* language governing permissions and limitations under the License.
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*
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* When distributing the software, include this License Header Notice in each
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* file and include the License file at packager/legal/LICENSE.txt.
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*
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* GPL Classpath Exception:
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* Oracle designates this particular file as subject to the "Classpath"
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* exception as provided by Oracle in the GPL Version 2 section of the License
21+
* file that accompanied this code.
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*
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* Modifications:
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* If applicable, add the following below the License Header, with the fields
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* enclosed by brackets [] replaced by your own identifying information:
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* "Portions Copyright [year] [name of copyright owner]"
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*
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* Contributor(s):
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* If you wish your version of this file to be governed by only the CDDL or
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* only the GPL Version 2, indicate your decision by adding "[Contributor]
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* elects to include this software in this distribution under the [CDDL or GPL
32+
* Version 2] license." If you don't indicate a single choice of license, a
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* recipient has the option to distribute your version of this file under
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* either the CDDL, the GPL Version 2 or to extend the choice of license to
35+
* its licensees as provided above. However, if you add GPL Version 2 code
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* and therefore, elected the GPL Version 2 license, then the option applies
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* only if the new code is made subject to such option by the copyright
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* holder.
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*/
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package org.javaee7.jpa.unsynchronized.pc;
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import java.io.Serializable;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.Id;
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import javax.persistence.NamedQueries;
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import javax.persistence.NamedQuery;
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import javax.persistence.Table;
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/**
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* @author Arun Gupta
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*/
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@Entity
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@Table(name="EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC")
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@NamedQueries({
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@NamedQuery(name = "Employee.findAll", query = "SELECT e FROM Employee e")
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})
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public class Employee implements Serializable {
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private static final long serialVersionUID = 1L;
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@Id
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private int id;
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@Column(length=50)
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private String name;
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public Employee() { }
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public Employee(int id, String name) {
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this.id = id;
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this.name = name;
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}
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public Employee(String name) {
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this.name = name;
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}
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public int getId() {
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return id;
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}
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public void setId(int id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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}

‎jpa/unsynchronized-pc/src/main/java/org/javaee7/jpa/unsynchronized/pc/EmployeeBean.java‎

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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
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*
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* The contents of this file are subject to the terms of either the GNU
7+
* General Public License Version 2 only ("GPL") or the Common Development
8+
* and Distribution License("CDDL") (collectively, the "License"). You
9+
* may not use this file except in compliance with the License. You can
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* obtain a copy of the License at
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* http://glassfish.java.net/public/CDDL+GPL_1_1.html
12+
* or packager/legal/LICENSE.txt. See the License for the specific
13+
* language governing permissions and limitations under the License.
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*
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* When distributing the software, include this License Header Notice in each
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* file and include the License file at packager/legal/LICENSE.txt.
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*
18+
* GPL Classpath Exception:
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* Oracle designates this particular file as subject to the "Classpath"
20+
* exception as provided by Oracle in the GPL Version 2 section of the License
21+
* file that accompanied this code.
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*
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* Modifications:
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* If applicable, add the following below the License Header, with the fields
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* enclosed by brackets [] replaced by your own identifying information:
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* "Portions Copyright [year] [name of copyright owner]"
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*
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* Contributor(s):
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* If you wish your version of this file to be governed by only the CDDL or
30+
* only the GPL Version 2, indicate your decision by adding "[Contributor]
31+
* elects to include this software in this distribution under the [CDDL or GPL
32+
* Version 2] license." If you don't indicate a single choice of license, a
33+
* recipient has the option to distribute your version of this file under
34+
* either the CDDL, the GPL Version 2 or to extend the choice of license to
35+
* its licensees as provided above. However, if you add GPL Version 2 code
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* and therefore, elected the GPL Version 2 license, then the option applies
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* only if the new code is made subject to such option by the copyright
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* holder.
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*/
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package org.javaee7.jpa.unsynchronized.pc;
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import java.util.List;
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import javax.ejb.Stateless;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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import javax.persistence.SynchronizationType;
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/**
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* @author Arun Gupta
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*/
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@Stateless
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public class EmployeeBean {
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@PersistenceContext(synchronization = SynchronizationType.UNSYNCHRONIZED)
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EntityManager em;
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public void persistWithoutJoin(Employee e) {
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em.persist(e);
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}
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public void persistWithJoin(Employee e) {
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em.joinTransaction();
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em.persist(e);
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}
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public List<Employee> get() {
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return em.createNamedQuery("Employee.findAll", Employee.class).getResultList();
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}
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}

‎jpa/unsynchronized-pc/src/main/java/org/javaee7/jpa/unsynchronized/pc/TestServlet.java‎

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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
5+
*
6+
* The contents of this file are subject to the terms of either the GNU
7+
* General Public License Version 2 only ("GPL") or the Common Development
8+
* and Distribution License("CDDL") (collectively, the "License"). You
9+
* may not use this file except in compliance with the License. You can
10+
* obtain a copy of the License at
11+
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
12+
* or packager/legal/LICENSE.txt. See the License for the specific
13+
* language governing permissions and limitations under the License.
14+
*
15+
* When distributing the software, include this License Header Notice in each
16+
* file and include the License file at packager/legal/LICENSE.txt.
17+
*
18+
* GPL Classpath Exception:
19+
* Oracle designates this particular file as subject to the "Classpath"
20+
* exception as provided by Oracle in the GPL Version 2 section of the License
21+
* file that accompanied this code.
22+
*
23+
* Modifications:
24+
* If applicable, add the following below the License Header, with the fields
25+
* enclosed by brackets [] replaced by your own identifying information:
26+
* "Portions Copyright [year] [name of copyright owner]"
27+
*
28+
* Contributor(s):
29+
* If you wish your version of this file to be governed by only the CDDL or
30+
* only the GPL Version 2, indicate your decision by adding "[Contributor]
31+
* elects to include this software in this distribution under the [CDDL or GPL
32+
* Version 2] license." If you don't indicate a single choice of license, a
33+
* recipient has the option to distribute your version of this file under
34+
* either the CDDL, the GPL Version 2 or to extend the choice of license to
35+
* its licensees as provided above. However, if you add GPL Version 2 code
36+
* and therefore, elected the GPL Version 2 license, then the option applies
37+
* only if the new code is made subject to such option by the copyright
38+
* holder.
39+
*/
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package org.javaee7.jpa.unsynchronized.pc;
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import java.io.IOException;
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import java.io.PrintWriter;
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import javax.inject.Inject;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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/**
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* @author Arun Gupta
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*/
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@WebServlet(urlPatterns = {"/TestServlet"})
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public class TestServlet extends HttpServlet {
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@Inject
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EmployeeBean bean;
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/**
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* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
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* methods.
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*
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* @param request servlet request
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* @param response servlet response
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* @throws ServletException if a servlet-specific error occurs
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* @throws IOException if an I/O error occurs
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*/
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protected void processRequest(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html;charset=UTF-8");
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PrintWriter out = response.getWriter();
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out.println("<html>");
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out.println("<head>");
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out.println("<title>List of Employees</title>");
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out.println("</head>");
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out.println("<body>");
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listEmployees(out, "Initial list", "Total == 7?");
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Employee e = new Employee(8, "Priya");
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bean.persistWithoutJoin(e);
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listEmployees(out, "Unsynchronized PC has not joined a transaction", "Total == 7?");
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bean.persistWithJoin(e);
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listEmployees(out, "Unsynchronized PC has joined a transaction", "Total == 8?");
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out.println("</body>");
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out.println("</html>");
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}
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private void listEmployees(PrintWriter out, String title, String result) {
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out.println("<h3>" + title + " (" + bean.get().size() + ") " + result + "</h3>");
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for (Employee e : bean.get()) {
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out.println(e.getName() + "<br>");
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}
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}
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// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
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/**
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* Handles the HTTP <code>GET</code> method.
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*
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* @param request servlet request
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* @param response servlet response
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* @throws ServletException if a servlet-specific error occurs
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* @throws IOException if an I/O error occurs
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*/
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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processRequest(request, response);
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}
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/**
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* Handles the HTTP <code>POST</code> method.
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*
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* @param request servlet request
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* @param response servlet response
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* @throws ServletException if a servlet-specific error occurs
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* @throws IOException if an I/O error occurs
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*/
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@Override
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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processRequest(request, response);
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}
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/**
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* Returns a short description of the servlet.
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*
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* @return a String containing servlet description
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*/
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@Override
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public String getServletInfo() {
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return "Short description";
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}// </editor-fold>
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}

‎jpa/unsynchronized-pc/src/main/resources/META-INF/create.sql‎

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CREATE TABLE EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC ("ID" INTEGER not null primary key, "NAME" VARCHAR(50) not null)

‎jpa/unsynchronized-pc/src/main/resources/META-INF/drop.sql‎

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DROP TABLE EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC

‎jpa/unsynchronized-pc/src/main/resources/META-INF/load.sql‎

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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (1, 'Penny')
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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (2, 'Sheldon')
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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (3, 'Amy')
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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (4, 'Leonard')
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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (5, 'Bernadette')
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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (6, 'Raj')
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INSERT INTO EMPLOYEE_SCHEMA_UNSYNCHRONIZED_PC("ID", "NAME") VALUES (7, 'Howard')

‎jpa/unsynchronized-pc/src/main/resources/META-INF/persistence.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<persistence
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version="2.1"
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xmlns="http://xmlns.jcp.org/xml/ns/persistence"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
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<persistence-unit name="MyPU" transaction-type="JTA">
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<properties>
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<property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
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<property name="javax.persistence.schema-generation.create-source" value="script"/>
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<property name="javax.persistence.schema-generation.drop-source" value="script"/>
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<property name="javax.persistence.schema-generation.create-script-source" value="META-INF/create.sql"/>
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<property name="javax.persistence.schema-generation.drop-script-source" value="META-INF/drop.sql"/>
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<property name="javax.persistence.sql-load-script-source" value="META-INF/load.sql"/>
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<property name="eclipselink.logging.level" value="FINE"/>
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</properties>
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</persistence-unit>
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</persistence>

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