[jira] (MRELEASE-872) NPE in release:perform when specifying svn tag as param

["Robert Scholte (JIRA)" <ji...@codehaus.org>]

    [ https://jira.codehaus.org/browse/MRELEASE-872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=365849#comment-365849 ] 

Robert Scholte commented on MRELEASE-872:
-----------------------------------------

In the {{AbstractReleaseMojo}} we have the following lines:
{code}
    @Parameter( defaultValue = "${reactorProjects}", readonly = true, required = true )
    private List<MavenProject> reactorProjects;
{code}
This would imply that it can't be {{null}}.

When running {{mvn org.apache.maven.plugins:maven-help-plugin:2.2:evaluate -Dexpression=reactorProjects}} inside an empty I get content (actually a lot, I had to break the stream because it keeps going and going).

Need some extra investigation

> NPE in release:perform when specifying svn tag as param
> -------------------------------------------------------
>
>                 Key: MRELEASE-872
>                 URL: https://jira.codehaus.org/browse/MRELEASE-872
>             Project: Maven Release Plugin
>          Issue Type: Bug
>          Components: perform
>    Affects Versions: 2.4.2, 2.5
>         Environment: Windows 7, Maven 3.0.4, IBM JDK 1.6.0
>            Reporter: Anders Hammar
>
> When executing release:perform and specifying the Svn tag via the 'connectionUrl' parameter, the execution fails with a NullPointerException. This happens for an execution without an existing Maven project (e.g. in an empty directory).
> {quote}
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5:perform (default-cli) on project standalone-pom: Execution default-cli of goal org.apache.maven.plugins:maven-release-plugin:2.5:perform failed. NullPointerException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5:perform (default-cli) on project standalone-pom: Execution default-cli
> of goal org.apache.maven.plugins:maven-release-plugin:2.5:perform failed.
>         at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
>         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)
>         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:320)
>         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:60)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
>         at java.lang.reflect.Method.invoke(Method.java:611)
>         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: org.apache.maven.plugin.PluginExecutionException: Execution default-cli of goal org.apache.maven.plugins:maven-release-plugin:2.5:perform failed.
>         at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
>         at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
>         ... 19 more
> Caused by: java.lang.NullPointerException
>         at org.apache.maven.shared.release.util.ReleaseUtil.getCommonBasedir(ReleaseUtil.java:210)
>         at org.apache.maven.shared.release.util.ReleaseUtil.getCommonBasedir(ReleaseUtil.java:200)
>         at org.apache.maven.shared.release.phase.CheckoutProjectFromScm.performCheckout(CheckoutProjectFromScm.java:230)
>         at org.apache.maven.shared.release.phase.CheckoutProjectFromScm.execute(CheckoutProjectFromScm.java:131)
>         at org.apache.maven.shared.release.DefaultReleaseManager.perform(DefaultReleaseManager.java:429)
>         at org.apache.maven.shared.release.DefaultReleaseManager.perform(DefaultReleaseManager.java:381)
>         at org.apache.maven.plugins.release.PerformReleaseMojo.execute(PerformReleaseMojo.java:177)
>         at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
>         ... 20 more
> {quote}



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