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Posted to users@maven.apache.org by Ashley Williams <ag...@mac.com> on 2005/09/06 13:52:01 UTC
[m2] can't get list of dependencies in plugin
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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Re: [m2] can't get list of dependencies in plugin
Posted by Ashley Williams <ag...@mac.com>.
Looking forward to trying this out when my latest svn maven build
gives me my machine back. Since I'm not modifying Maven, is there
some way of turning off testing to reduce the build time??
Some related questions: what do the project.getDependencies() and
project.getdependencyArtifacts do - they look more promising than
project.getArtifacts() for my purposes. Are there any Javadocs so
that I can find this sort of thing out for myself??
On 6 Sep 2005, at 12:58, Trygve Laugstøl wrote:
> On Tue, Sep 06, 2005 at 12:52:01PM +0100, Ashley Williams wrote:
>
>> 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"
>>
>
> I think you need to add
>
> @requiresDependencyResolution [compile|test|runtime]
>
> here. See [1] for the complete reference.
>
>
>> */
>> 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>)
>>
>
> You should not have a dependency on MavenProject (and thus maven-
> project)
> because this makes your mojo Maven specific. Instead have two
> parameters
> and expressions like this:
>
> @parameter expression="${project.name}
>
> @parameter expression="${project.artifacts}
>
>
>>
>> 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?
>>
>
> [1]: http://maven.apache.org/maven2/developers/mojo-api-
> specification.html
>
> --
> Trygve
>
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Re: [m2] can't get list of dependencies in plugin
Posted by Trygve Laugstøl <tr...@codehaus.org>.
On Tue, Sep 06, 2005 at 12:52:01PM +0100, Ashley Williams wrote:
> 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"
I think you need to add
@requiresDependencyResolution [compile|test|runtime]
here. See [1] for the complete reference.
> */
> public class MyMojo extends AbstractMojo {
> /**
> * @parameter expression="${project}"
> * @required
> */
> private MavenProject project;
>
> public void execute() throws MojoExecutionException {
> System.out.println("project.getName()=" + project.getName());
> System.out.println("project.getArtifacts().size()="
> + project.getArtifacts().size());
> }
> }
>
> (So that it would compile I had to add a dependency in the pom:
> <dependency>
> <groupId>org.apache.maven</groupId>
> <artifactId>maven-project</artifactId>
> <version>2.0-beta-1-SNAPSHOT</version>
> </dependency>)
You should not have a dependency on MavenProject (and thus maven-project)
because this makes your mojo Maven specific. Instead have two parameters
and expressions like this:
@parameter expression="${project.name}
@parameter expression="${project.artifacts}
>
> 3. Finally I ran the plugin in the same directory as my target poms
> like so:
> m2 acme:test:1.0-SNAPSHOT:test
>
> and got the following results no matter which pom I ran it against:
>
> project.getName()=MBean Demo
> project.getArtifacts().size()=0
>
>
> Notice that the name that is printed corresponds to the target pom so
> the plugin does manage to pick up some details ok.
>
> Maybe I should get the dependencies using a different api, but its
> the same call used by the eclipse plugin at
> EclipseWriter.writeEclipseClasspath just before the call to
> addDependency().
>
> Anyone shed any light?
[1]: http://maven.apache.org/maven2/developers/mojo-api-specification.html
--
Trygve
Re: [m2] can't get list of dependencies in plugin
Posted by Brett Porter <br...@gmail.com>.
You need to add:
@requiresDependencyResolution
HTH,
Brett
On 9/6/05, Ashley Williams <ag...@mac.com> wrote:
>
> I've been bashing my head against a brick wall trying to get the list
> of artifacts back from the project object for my plugin but
> project.getArtifacts() always returns an empty list whereas I expect
> the list of artifacts corresponding to the target pom <dependency> tags.
>
> 1. I recreated the problem by creating a default project like so:
> m2 archetype:create -DgroupId=acme -DartifactId=test -
> DarchetypeArtifactId=maven-archetype-mojo
>
> 2. then I replaced the generated mojo with this class that has a goal
> called test and whose execute method just prints out the artifacts
> size and it always prints out zero:
>
> package com.mycompany;
>
> import org.apache.maven.plugin.AbstractMojo;
> import org.apache.maven.plugin.MojoExecutionException;
> import org.apache.maven.project.MavenProject;
>
> /**
> * Test Mojo
> *
> * @goal test
> *
> * @execute phase="generate-sources"
> */
> public class MyMojo extends AbstractMojo {
> /**
> * @parameter expression="${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?
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>