Trinidad_and_JDK_1.4

Trinidad use specific java 5 APIs so if you need to run Trinidad application in older you need to use a bytecode weaver like Retroweaver.

Build Trinidad for JDK 1.4

Use Maven

Start the Trinidad-build with -Dbuild.jdk14.compatible=true.

In the project where you want to use Trinidad in the 1.4 version, declare the dependencies as such - don't forget to include the retrotranslator library:

        <!-- Apache MyFaces Trinidad (backported version) -->
        <dependency>
            <groupId>org.apache.myfaces.trinidad</groupId>
            <artifactId>trinidad-api</artifactId>
            <version>1.0.2</version>
            <classifier>jdk14</classifier>
        </dependency>
                
        <dependency>
            <groupId>org.apache.myfaces.trinidad</groupId>
            <artifactId>trinidad-impl</artifactId>
            <version>1.0.2</version>
            <classifier>jdk14</classifier>
            
             <!-- Exclude the trinidad-api dependency as 
                        it would include the JDK5 version -->
            <exclusions>
                <exclusion>
                        <groupId>org.apache.myfaces.trinidad</groupId>
                        <artifactId>trinidad-api</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- Retrotranslator runtime library -->
        <dependency>
                <groupId>net.sf.retrotranslator</groupId>
                <artifactId>retrotranslator-runtime</artifactId>
                <version>1.2.1</version>
        </dependency>

You are done - your project should work perfectly with JDK1.4 now. One final remark - do not use the retroweaved trinidad-jar-files with JDK1.5!

Alternatively, Do it yourself...

• Dowload Retroweaver
• Unzip Retroweaver in directory
• Create a directory named ext and Compile this class in it (if you use a jdk 5 compiler use -target 1.4 -source 1.4 command line parameter):

package net.sourceforge.retroweaver.runtime.java.lang;

public class ThreadLocal_
{
        public static void remove(ThreadLocal threadLocal)
        {
                threadLocal.set(null);
        }
}

• Weave Trinidad (for example with ant) (create weaved directory before executing this ant script)

<project name="retroweave.trinidad" default="weave" basedir=".">

        <property name="retroweaver.home" location="your unziped retroweaver directory"/>
        <property name="trinidad.version" value="1.0.0-incubating"/>
        <property name="trinidad.api.jar.name" value="trinidad-api-${trinidad.version}.jar"/>
        <property name="trinidad.impl.jar.name" value="trinidad-impl-${trinidad.version}.jar"/>

        <taskdef name="retroweaver" classname="net.sourceforge.retroweaver.ant.RetroWeaverTask">
                <classpath>
                        <fileset dir="${retroweaver.home}/lib" includes="**/*.jar" />
                        <fileset dir="${retroweaver.home}/release" includes="**/*.jar" />
                        <pathelement location="${retroweaver.home}/ext"/>
                </classpath>
        </taskdef>

        <target name="weave" >
                <retroweaver inputjar="${trinidad.api.jar.name}" outputjar="./weaved/${trinidad.api.jar.name}" target="1.4" verify="true"/>
                <retroweaver inputjar="${trinidad.impl.jar.name}" outputjar="./weaved/${trinidad.impl.jar.name}" target="1.4" verify="true"/>
        </target>
</project>

For running this solution you need to package your application with Trinidad weaved jar, retroweaver-rt-2.0.jar, backport-util-concurrent.jar and the ThreadLocal_ class