I am trying to write a plugin that will generate source code prior to
compilation, but the plugin fails when it gets called.
The plugin looks like this:
/**
* @phase generate-sources
* @goal bean
* @author mpryor
*
*/
public class ProtegeBeanGeneratorMojo extends AbstractGeneratorMojo {
/**
* @parameter expression="${project.build.directory}/generated-sources"
* @required
*/
protected File outputDirectory;
[snip]
}
POM snippet
<project>
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>intermedi8-parent</artifactId>
<groupId>net.mobiquity</groupId>
<version>0.1-SNAPSHOT</version>
</parent>
<artifactId>intermedi8-protege-plugin</artifactId>
<version>0.1-SNAPSHOT</version>
<packaging>maven-plugin</packaging>
<name>Intermedi8 Protege Plugin</name>
<dependencies>
It builds and installs fine, with what appears to be a well formed
plugin.xml:
<plugin>
<groupId>net.mobiquity</groupId>
<artifactId>intermedi8-protege-plugin</artifactId>
<isolatedRealm>true</isolatedRealm>
<mojos>
<mojo>
<id>protege:bean</id>
<requiresDependencyResolution>runtime</requiresDependencyResolution>
<phase>generate-sources</phase>
<executePhase>generate-sources</executePhase>
<implementation>net.mobiquity.intermedi8.tools.protege.ProtegeBeanGeneratorM
ojo</implementation>
<language>java</language>
<instantiationStrategy>per-lookup</instantiationStrategy>
<executionStrategy>once-per-session</executionStrategy>
<parameters>
<parameter>
[snip]
I have another project that uses the plugin, configured like this:
<build>
<plugins>
<plugin>
<groupId>net.mobiquity</groupId>
<artifactId>intermedi8-protege-plugin</artifactId>
<version>0.1-SNAPSHOT</version>
<configuration>
<protogeProject>${maven.src.dir}/ontology/intermedi8.pprj/</protogeProject>
</configuration>
</plugin>
</plugins>
But the build fails with the following :
C:\proj\682\apps\intermedi8\intermedi8-core>m2 -X -e install
[INFO] intermedi8-parent: using locally installed snapshot
[INFO]
----------------------------------------------------------------------------
[INFO] Building Intermedi8 Core
[INFO]
----------------------------------------------------------------------------
[INFO] maven-jar-plugin: using locally installed snapshot
[INFO] maven-archiver: using locally installed snapshot
[INFO] maven: using locally installed snapshot
[INFO] intermedi8-protege-plugin: using locally installed snapshot
[INFO] maven-resources-plugin: using locally installed snapshot
[INFO] maven-compiler-plugin: using locally installed snapshot
[INFO] plexus-compiler-api: using locally installed snapshot
[INFO] plexus-compiler: using locally installed snapshot
[INFO] plexus-compiler-javac: using locally installed snapshot
[INFO] plexus-compilers: using locally installed snapshot
[INFO] maven-surefire-plugin: using locally installed snapshot
[INFO] maven-install-plugin: using locally installed snapshot
---------------------------------------------------
constituent[0]: file:/C:/dev/maven/m2dev/lib/commons-cli-1.0-beta-2.jar
constituent[1]: file:/C:/dev/maven/m2dev/lib/maven-artifact-2.0-SNAPSHOT.jar
constituent[2]: file:/C:/dev/maven/m2dev/lib/maven-core-2.0-SNAPSHOT.jar
constituent[3]: file:/C:/dev/maven/m2dev/lib/maven-model-2.0-SNAPSHOT.jar
constituent[4]: file:/C:/dev/maven/m2dev/lib/maven-monitor-2.0-SNAPSHOT.jar
constituent[5]:
file:/C:/dev/maven/m2dev/lib/maven-plugin-api-2.0-SNAPSHOT.jar
constituent[6]:
file:/C:/dev/maven/m2dev/lib/maven-plugin-descriptor-2.0-SNAPSHOT.jar
constituent[7]: file:/C:/dev/maven/m2dev/lib/maven-project-2.0-SNAPSHOT.jar
constituent[8]: file:/C:/dev/maven/m2dev/lib/maven-settings-2.0-SNAPSHOT.jar
constituent[9]:
file:/C:/dev/maven/m2dev/lib/plexus-container-artifact-1.0-alpha-3-SNAPSHOT.
jar
constituent[10]: file:/C:/dev/maven/m2dev/lib/plexus-i18n-1.0-beta-3.jar
constituent[11]:
file:/C:/dev/maven/m2dev/lib/wagon-http-lightweight-1.0-alpha-3-SNAPSHOT.jar
constituent[12]:
file:/C:/dev/maven/m2dev/lib/wagon-provider-api-1.0-alpha-3-SNAPSHOT.jar
---------------------------------------------------
java.lang.NullPointerException: version was null for
org.apache.maven.plugins:maven-protege-plugin
at
org.apache.maven.artifact.DefaultArtifact.getBaseVersion(DefaultArtifact.jav
a:246)
at
org.apache.maven.artifact.DefaultArtifact.getId(DefaultArtifact.java:159)
at
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultAr
tifactResolver.java:77)
at
org.codehaus.plexus.DefaultArtifactEnabledContainer.addComponent(DefaultArti
factEnabledContainer.java:104)
at
org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginManager.
java:282)
at
org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManag
er.java:241)
at
org.apache.maven.plugin.DefaultPluginManager.verifyPluginForGoal(DefaultPlug
inManager.java:195)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeMojo(DefaultLifec
ycleExecutor.java:478)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executePhase(DefaultLife
cycleExecutor.java:436)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.processGoals(DefaultLife
cycleExecutor.java:164)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycle
Executor.java:94)
at
org.apache.maven.DefaultMaven.processProject(DefaultMaven.java:222)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:136)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:217)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:303)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:243)
at
org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:416)
at org.codehaus.classworlds.Launcher.main(Launcher.java:363)
Any clues as to what I have done wrong ?
Thanks,
Matthew
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