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Arun Gupta
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New sample to show basic usage of Mongo in a Java EE application
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‎extra/mongo/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.extra</groupId>
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<artifactId>extra-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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<groupId>org.javaee7.extra</groupId>
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<artifactId>mongo</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>war</packaging>
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<dependencies>
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<dependency>
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<groupId>org.mongodb</groupId>
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<artifactId>mongo-java-driver</artifactId>
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<version>1.3</version>
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</dependency>
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<dependency>
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<groupId>de.flapdoodle.embed</groupId>
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<artifactId>de.flapdoodle.embed.mongo</artifactId>
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<version>1.36</version>
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</dependency>
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</dependencies>
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</project>

‎extra/mongo/src/main/java/org/javaee7/extra/mongo/Person.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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* https://glassfish.dev.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
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* 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
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* 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
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* 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.extra.mongo;
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import com.mongodb.BasicDBObject;
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import com.mongodb.DBObject;
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import javax.enterprise.inject.Model;
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import javax.validation.constraints.Size;
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/**
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* @author Arun Gupta
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*/
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@Model
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public class Person {
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@Size(min = 1, max = 20)
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private String name;
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private int age;
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public Person() {
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}
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public Person(String name, int age) {
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this.name = name;
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this.age = age;
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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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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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public BasicDBObject toDBObject() {
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BasicDBObject doc = new BasicDBObject();
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doc.put("name", name);
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doc.put("age", age);
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return doc;
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}
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public static Person fromDBObject(DBObject doc) {
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Person m = new Person();
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m.name = (String) doc.get("name");
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m.age = (int) doc.get("age");
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return m;
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}
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@Override
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public String toString() {
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return name + ", " + age;
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}
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}

‎extra/mongo/src/main/java/org/javaee7/extra/mongo/PersonSessionBean.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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* https://glassfish.dev.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
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* 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
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* 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
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* 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.extra.mongo;
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import com.mongodb.BasicDBObject;
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import com.mongodb.DB;
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import com.mongodb.DBCollection;
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import com.mongodb.DBCursor;
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import com.mongodb.DBObject;
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import com.mongodb.Mongo;
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import com.mongodb.MongoException;
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import de.flapdoodle.embed.mongo.MongodExecutable;
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import de.flapdoodle.embed.mongo.MongodProcess;
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import de.flapdoodle.embed.mongo.MongodStarter;
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import de.flapdoodle.embed.mongo.config.MongodConfigBuilder;
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import de.flapdoodle.embed.mongo.config.Net;
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import de.flapdoodle.embed.mongo.distribution.Version;
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import de.flapdoodle.embed.process.runtime.Network;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javax.annotation.PostConstruct;
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import javax.annotation.PreDestroy;
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import javax.ejb.Stateless;
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import javax.inject.Inject;
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import javax.inject.Named;
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/**
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* @author Arun Gupta
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*/
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@Named
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@Stateless
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public class PersonSessionBean {
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@Inject
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Person person;
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DBCollection personCollection;
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private MongodExecutable mongodExe;
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private MongodProcess mongod;
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private final int MONGO_PORT = 12345;
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@PostConstruct
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private void initDB() {
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try {
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// Start embedded Mongo
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MongodStarter runtime = MongodStarter.getDefaultInstance();
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mongodExe = runtime.prepare(new MongodConfigBuilder()
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.version(Version.Main.PRODUCTION)
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.net(new Net(MONGO_PORT, Network.localhostIsIPv6()))
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.build());
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mongod = mongodExe.start();
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// Get an instance of Mongo
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Mongo m = new Mongo("localhost", MONGO_PORT);
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DB db = m.getDB("personDB");
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personCollection = db.getCollection("persons");
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if (personCollection == null) {
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personCollection = db.createCollection("persons", null);
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}
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} catch (MongoException | IOException ex) {
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Logger.getLogger(PersonSessionBean.class.getName()).log(Level.SEVERE, null, ex);
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}
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}
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@PreDestroy
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private void stopDB() {
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mongod.stop();
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mongodExe.stop();
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}
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public void createPerson() {
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BasicDBObject doc = person.toDBObject();
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personCollection.insert(doc);
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}
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public List<Person> getPersons() {
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List<Person> persons = new ArrayList();
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DBCursor cur = personCollection.find();
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System.out.println("getPersons: Found " + cur.length() + " person(s)");
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for (DBObject dbo : cur.toArray()) {
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persons.add(Person.fromDBObject(dbo));
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}
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return persons;
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}
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}

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