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Posted to users@maven.apache.org by snambi <sn...@yahoo.com> on 2011/12/16 08:15:03 UTC
NPE while auto-wiring values in a mojo
Hi All
I have the following mojo, but the values are NOT getting set, by maven
runtime.
The exception trace is provided below.
Have anyone faced the same problem before?
public class Assembler1PackageMojo extends AbstractMojo {
/**
* The Maven project.
*
* @parameter expression="${project}"
* @required
* @readonly
*/
private MavenProject project;
/**
* Location of the file.
*
* @parameter expression="${project.basedir}"
* @required
*/
private File projectDirectory;
/**
* Location of the file.
*
* @parameter expression="${project.build.directory}"
* @required
*/
private File targetDirectory;
/**
* The application name is used by the packager to create a cronus
package.
* @parameter expression="${assembler.applicationName}"
* @required
*/
private String applicationName;
/**
* Consumer Id (app Id).
* Mandatory for the time being.
* @parameter expression="${assembler.consumerId}"
* @required
*/
private String consumerId;
/**
* @parameter default-value="cronus-pkg"
* @optional
*/
private String cronusFolder;
public void execute() throws MojoExecutionException{
getLog().info("Executing Assembler package mojo");
}
[INFO]
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 1.796s
[INFO] Finished at: Thu Dec 15 22:29:47 PST 2011
[INFO] Final Memory: 5M/109M
[INFO]
------------------------------------------------------------------------
[ERROR] Internal error: java.lang.NullPointerException -> [Help 1]
org.apache.maven.InternalErrorException: Internal error:
java.lang.NullPointerException
at
org.apache.maven.lifecycle.internal.BuilderCommon.handleBuildError(BuilderCommon.java:128)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:95)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
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:597)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: java.lang.NullPointerException
at
org.codehaus.plexus.component.configurator.converters.ComponentValueSetter.configure(ComponentValueSetter.java:331)
at
org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter.processConfiguration(ObjectWithFieldsConverter.java:151)
at
org.codehaus.plexus.component.configurator.BasicComponentConfigurator.configureComponent(BasicComponentConfigurator.java:56)
at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.populatePluginFields(DefaultMavenPluginManager.java:567)
at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMavenPluginManager.java:529)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:92)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
... 16 more
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException
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