Monday Apr 22, 2013

What's new in Java EE 7 at JUDCon Brazil 2013

This weekend I talked about Java EE 7 at JUDCon Brazil 2013, the session "What's new in Java EE 7? From HTML5 to JMS 2.0". What a great honour to be at JBoss Users and Developers Conference to share with attendees the great work that Oracle, Red Hat, and many others are doing for this platform. Room was packed, with people standing, and so much interest to hear all the cool stuff to come, such as WebSockets, JMS, JAX-RS, JSF and even more. To add some value to this talk, and as I'm a fan of Game of Thrones, I thought that a few images would fit right at this talk :-)


Slides here!

Wednesday Apr 10, 2013

Configure DataSources for Maven Embedded GlassFish

 

In my previous post I showed to you how to configure Maven and the Embedded GlassFish Plugin to be run with GlassFish 4.0 b83. A comment on that post raised the following question: Is it now possible to setup datasources with GlassFish embedded for testing purposes? The answer is yes! Not only DataSource but any resource. For now, I only tested DataSources but it's working fine. Follow these steps:

  1. Create a file called glassfish-resources.xml inside your WEB-INF webapplication directory with the connection pool and datasource configured, by either:
    1. Adding the content of this Gist into it and edit it with your database information, or ...
    2. Create it using NetBeans as described in this blog post by Arun. Move the file to the src/webapps/WEB-INF folder.
  2. Make sure the JNDI name is similar to this: java:app/jdbc/YourDataSourceName and that it is correctly mapped in your persistence.xml

The most important thing here is to keep the JNDI name with java:app/ prefix. I tried using just jdbc/MyDS on both persistence.xml and glassfish-resources.xml, but it didn't work, shoulting errors in the log related to the __pm suffix issue. So remember the prefix, as this is an application-scoped resource.

UPDATE Also, don't forget to add the following dependency for your Database JDBC Driver inside the <plugin> of Embedded GlassFish. For MySQL, add this:

                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.24</version>
                    </dependency> 

 

Tuesday Apr 09, 2013

GlassFish 4 beta and Maven Embedded Plugin

Everyone is looking for an easy way to try out Java EE 7, even before the launch. Specially now where some JSRs just got Final, like JMS, Batch, JSON, and others. Arun already gave a great tip for anyone that want to try a Java EE 7 project with Maven, but the archetype offered by the Mojo project at Codehaus is missing one important thing: the Maven Plugin for GlassFish Embedded.

 

This plugin is great because developers don't even need to download, install and configure GlassFish locally. All they need to do is to have JDK and Maven installed. Then they can choose whatever IDE works best (I'm working right now with NetBeans, but I'm also a Sublime Text 2 big fan). It's a simple 3-step command:

  1. $ git clone http://myrepo/myproject
  2. $ cd myproject
  3. $ mvn embedded-glassfish:run
    ... then you wait until the Internet is being downloaded into your local repository ...

Done! Simple as that, a project that does not depend on any installation besides Maven and JDK (ok... Git too, in this case). Now how does the pom.xml must be set up with the Embedded plugin? Follow these steps:

  1. Create a project based on Codehaus archetype, like Arun mentioned in his blog. I'm copying the command line here for the sake of browser history:
    mvn -DarchetypeGroupId=org.codehaus.mojo.archetypes -DarchetypeArtifactId=webapp-javaee7 -DarchetypeVersion=0.3-SNAPSHOT -DarchetypeRepository=https://nexus.codehaus.org/content/repositories/snapshots/ -DgroupId=org.glassfish -DartifactId=javaee7-sample -Dversion=1.0-SNAPSHOT -Dpackage=org.glassfish.javaee7-sample -Darchetype.interactive=false --batch-mode --update-snapshots archetype:generate 
  2. Now open pom.xml, and go to the end of the <plugins> section
  3. Add the following plugin to the <build><plugins> section
    <plugin>
           <groupId>org.glassfish.embedded</groupId>
             <artifactId>maven-embedded-glassfish-plugin</artifactId>
             <version>3.1.2.2</version>
             <configuration>
                <app>target/${project.artifactId}-${project.version}</app>
                <port>8282</port>
                <contextRoot>${project.artifactId}</contextRoot>
             </configuration>
             <dependencies>
               <dependency>
               <groupId>org.glassfish.main</groupId>
               <artifactId>simple-glassfish-api</artifactId>
               <version>4.0-b79</version>
             </dependency>
             <dependency>
               <groupId>org.glassfish.main.extras</groupId>
               <artifactId>glassfish-embedded-all</artifactId>
               <version>4.0-b83</version>
             </dependency>
           </dependencies>
         </plugin>
  4. UPDATE 04-10-2013: Don't forget to add the following pluginRepository configuration inside your POM
       <pluginRepositories>
            <pluginRepository>
                <id>maven.java.net</id>
                <name>Java.net Repository for Maven</name>
                <url>https://maven.java.net/content/groups/promoted/</url>
            </pluginRepository>
            <pluginRepository>
                <id>maven2-repository.dev.java.net</id>
               <name>Java.net Repository for Maven</name>
                <url>http://download.java.net/maven/glassfish/</url>
            </pluginRepository>
        </pluginRepositories>
  5. Execute the following Maven command and then point your browser to http://localhost:8282/javaee7-sample
    $ mvn package embedded-glassfish:run

The reason you must modify the dependencies of the plugin is that there's no released yet of the Embedded Plugin pointing to the GlassFish 4 promoted builds, although some artifacts are already there (i.e. simple-glassfish-api for b79; version is different because until now, there's no release of b83). We hope that the plugin will be updated together with the official release, as soon as possible.

By the way, with this configuration of the Embedded Plugin, you can edit any JavaServer Faces page, and just hit refresh in the browser. The configuration is poiting to the exploded WAR in Maven's target directory. Great setup for designers. 

Happy Java EE 7 coding until the launch!

 

 

About


Bruno has been having fun working with Java since 2000 and now helps Oracle on sharing the technology accross all Latin America. Also plays videogames, does trekking and loves beer.

Follow me on Twitter! @brunoborges

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