Maven Ant Tasks are switching the Classloader of the Main Ant Thread
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Key: MANTTASKS-108
URL: http://jira.codehaus.org/browse/MANTTASKS-108
Project: Maven 2.x Ant Tasks
Issue Type: Bug
Components: deploy task
Affects Versions: 2.0.8
Environment: I have testet it on windows as well as linux.
Reporter: Thomas Tardy
Priority: Critical
There is a thread on the user mailing list which describes the problem.
http://www.nabble.com/Using-Maven-Ant-Tasks-in-a-CI-Environment-with-IBM-Jazz-tt16556859s177.html#a16574083
The problem can be reproduced with the following script.
The ant build script:
<?xml version="1.0" encoding="UTF-8"?>
<project name="MavenTest" default="default"
xmlns:artifact="antlib:org.apache.maven.artifact.ant">
<description>
description
</description>
<taskdef name="mavenTestTask"
classname="maven.test.task.MavenTestTask" />
<target name="default">
<echo message="Invoking test class that does nothing but echo the
classloader"/>
<mavenTestTask/>
<echo message="Invoking maven artifact:pom task"/>
<artifact:pom id="pom" file="C:/maven-sample/my-app/pom.xml" />
<echo message="Invoking test class again that does nothing but echo the
classloader"/>
<mavenTestTask/>
</target>
</project>
The simple Ant Task:
package maven.test.task;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
/**
* Test task demonstrating Maven switching the class loader.
*/
public class MavenTestTask extends Task {
/* (non-Javadoc)
* Intentionally not documented. See parent.
*/
@Override
public void execute() throws BuildException {
log("Current Class Loader: " +
Thread.currentThread().getContextClassLoader());
}
The output when run in Ant:
Buildfile: C:\Maven\Test\build.xml
default:
[echo] Invoking test class that does nothing but echo the classloader
[mavenTestTask] Current Class Loader: [EMAIL PROTECTED]
[echo] Invoking maven artifact:pom task
[echo] Invoking test class again that does nothing but echo the classloader
[mavenTestTask] Current Class Loader: [EMAIL PROTECTED]
BUILD SUCCESSFUL
Total time: 871 milliseconds
Thanks for your support!
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