Hello all,
I'm having a problem trying to use the wagon-scm plugin. I have added
the following to my pom (in this case, a parent pom):
<build>
<extensions>
<extension>
<groupId>org.apache.maven.wagon</groupId>
<artifactId>wagon-scm</artifactId>
<version>1.0-beta-2-SNAPSHOT</version>
</extension>
<extension>
<groupId>org.apache.maven.scm</groupId>
<artifactId>maven-scm-manager-plexus</artifactId>
<version>1.0-SNAPSHOT</version>
</extension>
<extension>
<groupId>org.apache.maven.scm</groupId>
<artifactId>maven-scm-provider-svnexe</artifactId>
<version>1.0-SNAPSHOT</version>
</extension>
</extensions>
</build>
However, when I now try to build my project from the child pom, an
execution which uses the scm checkout goal stops working. The
execution is:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-scm-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<executions>
<execution>
<phase>validate</phase>
<configuration>
<checkoutDirectory>SOME_DIR</checkoutDirectory>
<connectionUrl>scm:svn:http://SOMEHOST/etc</connectionUrl>
<skipCheckoutIfExists>false</skipCheckoutIfExists>
</configuration>
<goals>
<goal>checkout</goal>
</goals>
</execution>
</executions>
</plugin>
The error I get is:
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Internal error in the plugin manager executing goal 'org.apache.maven.plu
gins:maven-scm-plugin:1.0-SNAPSHOT:checkout': Unable to find the mojo
'org.apache.
maven.plugins:maven-scm-plugin:1.0-SNAPSHOT:checkout' in the plugin
'org.apache.ma
ven.plugins:maven-scm-plugin'
Note that this execution starts working again if I comment out the
<extensions> element from the parent pom, and the wagon-scm plugin
works if I comment out the maven-scm-plugin <execution>. Also, the
problem arises even though the wagon-scm plugin is not (to my
knowledge) being used. I have also tried various versions of wagon-scm
and maven-scm-plugin, but the same problem always occurs. I have
attached the full stack trace of the error.
Thanks for any help,
Dean.
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Internal error in the plugin manager executing goal 'org.apache.maven.plu
gins:maven-scm-plugin:1.0-SNAPSHOT:checkout': Unable to find the mojo 'org.apach
e.maven.plugins:maven-scm-plugin:1.0-SNAPSHOT:checkout' in the plugin 'org.apach
e.maven.plugins:maven-scm-plugin'
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Internal error in the pl
ugin manager executing goal 'org.apache.maven.plugins:maven-scm-plugin:1.0-SNAPS
HOT:checkout': Unable to find the mojo 'org.apache.maven.plugins:maven-scm-plugi
n:1.0-SNAPSHOT:checkout' in the plugin 'org.apache.maven.plugins:maven-scm-plugi
n'
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
ultLifecycleExecutor.java:538)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLi
fecycle(DefaultLifecycleExecutor.java:475)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau
ltLifecycleExecutor.java:454)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan
dleFailures(DefaultLifecycleExecutor.java:306)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen
ts(DefaultLifecycleExecutor.java:273)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi
fecycleExecutor.java:140)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:256)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.PluginManagerException: Unable to find the mo
jo 'org.apache.maven.plugins:maven-scm-plugin:1.0-SNAPSHOT:checkout' in the plug
in 'org.apache.maven.plugins:maven-scm-plugin'
at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(Defaul
tPluginManager.java:533)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPlugi
nManager.java:390)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
ultLifecycleExecutor.java:534)
... 16 more
Caused by: org.codehaus.plexus.component.repository.exception.ComponentLookupExc
eption: Unable to lookup component 'org.apache.maven.plugin.Mojoorg.apache.maven
.plugins:maven-scm-plugin:1.0-SNAPSHOT:checkout', it could not be started
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContai
ner.java:339)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContai
ner.java:440)
at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(Defaul
tPluginManager.java:524)
... 18 more
Caused by: org.codehaus.plexus.component.repository.exception.ComponentLifecycle
Exception: Error starting component
at org.codehaus.plexus.component.manager.AbstractComponentManager.startC
omponentLifecycle(AbstractComponentManager.java:109)
at org.codehaus.plexus.component.manager.AbstractComponentManager.create
ComponentInstance(AbstractComponentManager.java:95)
at org.codehaus.plexus.component.manager.PerLookupComponentManager.getCo
mponent(PerLookupComponentManager.java:48)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContai
ner.java:331)
... 20 more
Caused by: org.codehaus.plexus.personality.plexus.lifecycle.phase.PhaseExecution
Exception: Error composing component
at org.codehaus.plexus.personality.plexus.lifecycle.phase.CompositionPha
se.execute(CompositionPhase.java:33)
at org.codehaus.plexus.lifecycle.AbstractLifecycleHandler.start(Abstract
LifecycleHandler.java:101)
at org.codehaus.plexus.component.manager.AbstractComponentManager.startC
omponentLifecycle(AbstractComponentManager.java:105)
... 23 more
Caused by: org.codehaus.plexus.component.composition.CompositionException: Compo
sition failed for the field manager in object of type org.apache.maven.scm.plugi
n.CheckoutMojo
at org.codehaus.plexus.component.composition.FieldComponentComposer.assi
gnRequirementToField(FieldComponentComposer.java:144)
at org.codehaus.plexus.component.composition.FieldComponentComposer.asse
mbleComponent(FieldComponentComposer.java:73)
at org.codehaus.plexus.component.composition.DefaultComponentComposerMan
ager.assembleComponent(DefaultComponentComposerManager.java:68)
at org.codehaus.plexus.DefaultPlexusContainer.composeComponent(DefaultPl
exusContainer.java:1486)
at org.codehaus.plexus.personality.plexus.lifecycle.phase.CompositionPha
se.execute(CompositionPhase.java:29)
... 25 more
Caused by: java.lang.IllegalArgumentException
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccess
orImpl.java:63)
at java.lang.reflect.Field.set(Field.java:656)
at org.codehaus.plexus.component.composition.FieldComponentComposer.assi
gnRequirementToField(FieldComponentComposer.java:137)
... 29 more---------------------------------------------------------------------
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