Why are Maven generated-sources not getting compiled? [duplicate]

Question

I have a plugin which generates sources under the target/generated-sources/wrappers directory. It's wired into the generate-sources phase like this:

<plugin>     <groupId>mygroupid</groupId>     <artifactId>myartifactid</artifactId>     <executions>         <execution>         <phase>generate-sources</phase>         <goals>             <goal>xml2java</goal>         </goals>         </execution>     </executions> </plugin> 

The problem is, when I use mvn deploy the .class files won't be placed in the jar. I see all the .java files there, but no .class.

I read all the issues around this problem, but couldn't figure out how to solve the problem. I'm using Maven 3.0.x.

Answer 1

The build-helper plugin indeed solved the problem. Thanks @Joe for the comment.

<plugin>     <groupId>org.codehaus.mojo</groupId>     <artifactId>build-helper-maven-plugin</artifactId>     <executions>         <execution>             <phase>generate-sources</phase>             <goals>                 <goal>add-source</goal>             </goals>             <configuration>                 <sources>                     <source>${project.build.directory}/generated-sources/wrappers</source>                 </sources>             </configuration>         </execution>     </executions> </plugin> 

Answer 2

If you have written the plugin by yourself you can programatically add the path with the generated sources to the maven source paths.

@Mojo(name = "generate") public class MyCodegenMojo extends AbstractMojo {     @Parameter(defaultValue = "${project}")     private MavenProject project;      @Override     public void execute() throws MojoExecutionException, MojoFailureException{         // your generator code          project.addCompileSourceRoot("path/to/your/generated/sources");     }  } 

For example the raml-jaxrs-codegen plugin uses this technique. See RamlJaxrsCodegenMojo.java for more details.