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  • OpenEjb, Jetty and Maven - Transaction Management

    I’ve been meaning to blog about getting transaction management working with OpenEjb and Jetty using jetty:run… it’s still an on-going story… but the following might get you going…

    First off, in your pom.xml you need to add the configuration for maven-jetty-plugin… we need to dance around the various activemq/activeio versions and ensure that we get the correct version of ant…

    <?xml version="1.0"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.openejb.examples</groupId>
  <artifactId>jetty-openejb</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>jetty-openejb Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>${project.artifactId}</finalName>
    <plugins>
      <plugin>
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>maven-jetty-plugin</artifactId>
        <version>6.1.22</version>
        <dependencies>
          <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-core</artifactId>
            <version>4.1.1</version>
            <exclusions>
              <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
              </exclusion>
              <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging-api</artifactId>
              </exclusion>
              <exclusion>
                <groupId>org.apache.activemq</groupId>
                <artifactId>activeio-core</artifactId>
              </exclusion>
            </exclusions>
          </dependency>
          <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-ra</artifactId>
            <version>4.1.1</version>
            <exclusions>
              <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
              </exclusion>
              <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging-api</artifactId>
              </exclusion>
              <exclusion>
                <groupId>org.apache.activemq</groupId>
                <artifactId>activeio-core</artifactId>
              </exclusion>
            </exclusions>
          </dependency>
          <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activeio-core</artifactId>
            <version>3.1.2</version>
            <exclusions>
              <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
              </exclusion>
              <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging-api</artifactId>
              </exclusion>
            </exclusions>
          </dependency>
          <dependency>
            <groupId>org.apache.openejb</groupId>
            <artifactId>openejb-core</artifactId>
            <version>3.1.2</version>
            <exclusions>
              <exclusion>
                <groupId>org.apache.activemq</groupId>
                <artifactId>activemq-core</artifactId>
              </exclusion>
              <exclusion>
                <groupId>org.apache.activemq</groupId>
                <artifactId>activemq-ra</artifactId>
              </exclusion>
              <exclusion>
                <groupId>org.apache.activemq</groupId>
                <artifactId>activeio-core</artifactId>
              </exclusion>
              <exclusion>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
              </exclusion>
            </exclusions>
          </dependency>
          <!-- in order to use the latest version of openejb, we need to exclude
               the dependencies provided in jsp-2.1-jetty -->
          <dependency>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>jsp-2.1-jetty</artifactId>
            <version>6.1.22</version>
            <exclusions>
              <exclusion>
                <groupId>ant</groupId>
                <artifactId>ant</artifactId>
              </exclusion>
            </exclusions>
          </dependency>
        </dependencies>
        <configuration>
          <jettyConfig>${basedir}/src/main/jetty/jetty.xml</jettyConfig>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

    Next we need to configure a src/main/jetty/jetty.xml to bind the UserTransaction instance into jetty…

    Java Maven JavaEE Created Wed, 10 Mar 2010 00:00:00 +0000

  • Acer Aspire One, Huawei E169G and Three IR

    One of my co-workers has asked me to post this up. It’s rough and ready, so make of it what you want.

    First off, Acer recently pushed an update for better performance with the Huawei USB modems… I’m assuming that you have this update… check if the file /etc/udev/rules.d/10-Huawei-Datacard.rules exists.

    If that file exists then when you plug in a E169g it will be correctly autodetected without requiring poking about with usbmodeswitch… it will bind the three serial ports of the E169G to /dev/HuaweiMobile-0, /dev/HuaweiMobile-1 and /dev/HuaweiMobile-2.

    Java JavaEE Created Tue, 21 Oct 2008 00:00:00 +0000

  • JPA, equals() and hashCode()

    Java JavaEE Created Fri, 14 Dec 2007 00:00:00 +0000

  • Combining Hibernate and Facelets with Maven, Netbeans and Glassfish

    Note to self, for later reading

    http://technology.amis.nl/blog/?p=2610

    Not sure why netbeans is essential on this!

    Java Maven JavaEE Created Wed, 21 Nov 2007 00:00:00 +0000

  • JAX-WS 2.1 madness

    I am sick of the fun that is getting JAX-WS 2.1 to work on JVM 1.6.

    Oh, copy these four jars into the endorsed directory and then you can use JAX-WS 2.1… oh but sometimes it won’t work for some unknown reason and then it will work again.

    How you are supposed to explain this to end users, I don’t know.

    So next you need a platform specific installer to put those jars into the correct location, or a platform specific start script to tell the JVM about my alternate endorsed lib folder… or do I write a self-extracting jar file that exctracts the libs and forks a second JVM… no that won’t work for people wanting to use my library..

    Java JavaEE Created Wed, 05 Sep 2007 00:00:00 +0000

  • JPA Entity exerciser

    Working on this to add to EasyGloss.

    There are a number of rules that JPA entities must obey:

    • equals and hashCode must only be based on the persistent fields that are @Id annotated.
    • annotations must be applied to either fields or getters, no mix & match (although future versions of the spec may provide for such)
    • In general, getters and setters should be simple methods (i.e. no complex processing)

    I want to have a JPA Entity excerciser that will check these rules for you (and can be included in your unit tests)

    Java JavaEE Created Fri, 20 Jul 2007 00:00:00 +0000