annotation processor support

[natros]

Hello,

I'm trying to use your plugin with an annotation processor (mapstruct -- http://mapstruct.org/). It seems to me that the plugin is not picking up the generated code.

[INFO] --- gwt-maven-plugin:1.0-rc-1:compile (default-compile) @ gwtapp ---
[INFO] Compiling module pt.ipb.tests.gwtapp.Main
[INFO] Ignored 1 unit with compilation errors in first pass.
[INFO] Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
[INFO] Finding entry point classes
[INFO] Tracing compile failure path for type 'pt.ipb.tests.gwtapp.client.Main'
[INFO] [ERROR] Errors in 'file:/Users/fsousa/Projects/tmp/gwtapp/src/main/java/pt/ipb/tests/gwtapp/client/Main.java'
[INFO] [ERROR] Line 9: No source code is available for type pt.ipb.tests.gwtapp.client.MyMapperImpl; did you forget to inherit a required module?
[INFO] [ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly

I have a sample project here https://github.com/natros/gwtapp

Thank you

[hpehl]

What if you add the generated code using the build-helper maven plugin? I have a similar setup and added the following plugin configuration

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

Replace ${project.build.directory}/generated-sources/annotations in case your code is generated to a different folder.

[natros]

Done that. It's not working :(

[INFO]    Finding entry point classes
[INFO]       Tracing compile failure path for type 'pt.ipb.tests.gwtapp.client.Main'
[INFO]          [ERROR] Errors in 'file:/Users/fsousa/Projects/tmp/gwtapp/src/main/java/pt/ipb/tests/gwtapp/client/Main.java'
[INFO]             [ERROR] Line 9: No source code is available for type pt.ipb.tests.gwtapp.client.MyMapperImpl; did you forget to inherit a required module?
[INFO]       [ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly

[tbroyer]

The way it's declared in your POM, gwt:compile is executed before build-helper:add-source (they're bound to the same phase, so Maven uses the document order, and you put gwt-maven-plugin before build-helper-maven-plugin).

Changing build-helper:add-source to run at process-classes fixes it. That also makes it possible to use gwt:devmode (which only runs up to the process-classes phase, so prepare-package definitely is too late).

Upgrading the maven-compiler-plugin to 3.2 would also fix it, without the need for the build-helper-maven-plugin, if it weren't for nasty side-effects (read: it's totally broken, stay with 3.1): https://issues.apache.org/jira/browse/MCOMPILER-235

[natros]

Now I'm able to compile but I still can't run gwt:devmode

 mvn gwt:devmode 
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building gwtapp 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] >>> gwt-maven-plugin:1.0-rc-1:devmode (default-cli) > process-classes @ gwtapp >>>
[INFO] 
[INFO] --- gwt-maven-plugin:1.0-rc-1:enforce-encoding (default-enforce-encoding) @ gwtapp ---
[INFO] 
[INFO] --- gwt-maven-plugin:1.0-rc-1:add-super-sources (default-add-super-sources) @ gwtapp ---
[INFO] 
[INFO] --- gwt-maven-plugin:1.0-rc-1:add-test-super-sources (default-add-test-super-sources) @ gwtapp ---
[INFO] 
[INFO] --- gwt-maven-plugin:1.0-rc-1:import-sources (default-import-sources) @ gwtapp ---
[INFO] 
[INFO] --- gwt-maven-plugin:1.0-rc-1:generate-module (default-generate-module) @ gwtapp ---
[INFO] /Users/fsousa/Projects/tmp/gwtapp/target/classes/pt/ipb/tests/gwtapp/Main.gwt.xml up to date - skipping
[INFO] 
[INFO] --- maven-resources-plugin:2.7:resources (default-resources) @ gwtapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] skip non existing resourceDirectory /Users/fsousa/Projects/tmp/gwtapp/src/main/super
[INFO] Copying 4 resources
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ gwtapp ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- build-helper-maven-plugin:1.9.1:add-source (add-source) @ gwtapp ---
[INFO] Source directory: /Users/fsousa/Projects/tmp/gwtapp/target/generated-sources/annotations added.
[INFO] 
[INFO] <<< gwt-maven-plugin:1.0-rc-1:devmode (default-cli) < process-classes @ gwtapp <<<
[INFO] 
[INFO] --- gwt-maven-plugin:1.0-rc-1:devmode (default-cli) @ gwtapp ---
[INFO] Super Dev Mode starting up
[INFO]    workDir: /Users/fsousa/Projects/tmp/gwtapp/target/gwt/devmode/work
[INFO]    Loading Java files in pt.ipb.tests.gwtapp.Main.
[INFO]    Ignored 1 unit with compilation errors in first pass.
[INFO] Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
[INFO]    Finding entry point classes
[INFO]       Tracing compile failure path for type 'pt.ipb.tests.gwtapp.client.Main'
[INFO]          [ERROR] Errors in 'file:/Users/fsousa/Projects/tmp/gwtapp/src/main/java/pt/ipb/tests/gwtapp/client/Main.java'
[INFO]             [ERROR] Line 9: No source code is available for type pt.ipb.tests.gwtapp.client.MyMapperImpl; did you forget to inherit a required module?
[INFO]       [ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

[tbroyer]

I'll have a look. I think I know what's going on.

[tbroyer]

I'll cut an RC 2 soon with the fix, but if you could try the snapshot in the mean time and tell me if it fixes the issue for you (I tried it with your project and it worked for me)

[natros]

It's working with both devmode and codeserver.

Thank you Thomas.

[tbroyer]

Just released 1.0-rc-2.