I've been bashing my head against a brick wall trying to get the list
of artifacts back from the project object for my plugin but
project.getArtifacts() always returns an empty list whereas I expect
the list of artifacts corresponding to the target pom <dependency> tags.
1. I recreated the problem by creating a default project like so:
m2 archetype:create -DgroupId=acme -DartifactId=test -
DarchetypeArtifactId=maven-archetype-mojo
2. then I replaced the generated mojo with this class that has a goal
called test and whose execute method just prints out the artifacts
size and it always prints out zero:
package com.mycompany;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;
/**
* Test Mojo
*
* @goal test
*
* @execute phase="generate-sources"
*/
public class MyMojo extends AbstractMojo {
/**
* @parameter expression="${project}"
* @required
*/
private MavenProject project;
public void execute() throws MojoExecutionException {
System.out.println("project.getName()=" + project.getName());
System.out.println("project.getArtifacts().size()="
+ project.getArtifacts().size());
}
}
(So that it would compile I had to add a dependency in the pom:
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.0-beta-1-SNAPSHOT</version>
</dependency>)
3. Finally I ran the plugin in the same directory as my target poms
like so:
m2 acme:test:1.0-SNAPSHOT:test
and got the following results no matter which pom I ran it against:
project.getName()=MBean Demo
project.getArtifacts().size()=0
Notice that the name that is printed corresponds to the target pom so
the plugin does manage to pick up some details ok.
Maybe I should get the dependencies using a different api, but its
the same call used by the eclipse plugin at
EclipseWriter.writeEclipseClasspath just before the call to
addDependency().
Anyone shed any light?
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