Hi all,
I've been trying Dagger 2 with GWT and have been fighting to get things
working. Could someone help?
My pom:
<dependency>
<groupId>com.google.dagger</groupId>
<artifactId>dagger</artifactId>
<version>2.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.google.dagger</groupId>
<artifactId>dagger-compiler</artifactId>
<version>2.0-SNAPSHOT</version>
<optional>true</optional>
</dependency>
[...]
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>${gwtVersion}</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test</goal>
</goals>
</execution>
</executions>
<configuration>
<module>my.Module</module>
<extraJvmArgs>-Xmx2048M -XX:MaxPermSize=128M</extraJvmArgs>
<runTarget>index.html</runTarget>
<warSourceDirectory>${project.build.directory}/${tmpTargetDirectory}
</warSourceDirectory>
<buildOutputDirectory>
${project.build.directory}/${tmpTargetDirectory}/WEB-INF/classes/
</buildOutputDirectory>
<hostedWebapp>${project.build.directory}/${tmpTargetDirectory}
</hostedWebapp>
<webappDirectory>${project.build.directory}/${tmpTargetDirectory}
</webappDirectory>
<webXml>${project.build.directory}/${tmpTargetDirectory}/WEB-INF</webXml>
<generateDirectory>src/main/java</generateDirectory>
<bindAddress>0.0.0.0</bindAddress>
<jsInteropMode>JS</jsInteropMode>
<closureCompiler>true</closureCompiler>
</configuration>
</plugin>
My issues are:
*#1 generated sources aren't available for gwt compilation*
running:
mvn compile
no errors are found in the compilation phase, dagger 2 generated sources
land in *target/generated-sources/annotations/*
However running:
mvn compile gwt:compile
GWT compilation outputs the following error:
[ERROR] Errors in
'file:/path/to/project/src/main/java/path/to/project/client/ProjectEntryPoint.java'
[INFO] [ERROR] Line 79: No source code is available for type path.to.project
.client.Dagger_ProjectComponent; 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
the problem seems related with the fact that GWT compilation isn't
including the generated sources, as target/generated-sources/annotations/
isn't included in the classpath of the GWT compiler. The project class
paths that are included in GWT compile command are:
/path/to/project/target/tmp/WEB-INF/classes
/path/to/project/target/src/main/java
*#2 Eclipse "doesn't follow" Dagger 2 generate sources (not related with
GWT per-si)*
I configured Eclipse (Luna edition) with m2e-apt plugin
(http://marketplace.eclipse.org/content/m2e-apt). My project works as a
maven project in Eclipse.
However when I change something in dagger (Component, Module, etc.) the
generated sources aren't immediately generated, I need to do "Maven >
Update Project".
*#3 Eclipse imports errors on Dagger 2 generated files open **(not related
with GWT per-si)*
When I open a file that was generated by dagger 2 (in
target/generated/sources/annotations) eclipse doesn't know how to import
other sources from target/generated/sources/annotations which lead to
several compile time errors in those generated files. Additionally, from
that point on Eclipse confuses himself and makes the project source files
(in src/main/java) that are referring to generated dagger files
(e.g. Dagger_ProjectComponent) to also be in error (eclipse doesn't know
anymore to import those symbols).
To overcome this I have to do "Maven > Update Project". Note, however, that
every time I open a dagger2 generated file, this happens again.
--
Has someone succeeded getting dagger 2 and GWT (and Eclipse) working
together smoothly?
Also, any help to overcome the reported issues would be great (specially
issue #1).
Thank you,
Vasco
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