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Posted to issues@maven.apache.org by "Marcus Höjvall (JIRA)" <ji...@codehaus.org> on 2014/06/04 10:12:10 UTC

[jira] (MCHECKSTYLE-231) NPE on mvn compile

Marcus Höjvall created MCHECKSTYLE-231:
------------------------------------------

             Summary: NPE on mvn compile
                 Key: MCHECKSTYLE-231
                 URL: https://jira.codehaus.org/browse/MCHECKSTYLE-231
             Project: Maven Checkstyle Plugin
          Issue Type: Bug
    Affects Versions: 2.12.1
         Environment: Apache Maven 3.2.1 (ea8b2b07643dbb1b84b6d16e1f08391b666bc1e9; 2014-02-14T18:37:52+01:00)
Maven home: /usr/local/Cellar/maven/3.2.1/libexec
Java version: 1.7.0_51, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.9.2", arch: "x86_64", family: "mac"

checkstyle plugin version: 2.12.1
            Reporter: Marcus Höjvall
            Priority: Critical


I'm getting a NullPointerError when running:

{code} mvn clean compile -Pall {code}
And all is a profile running the checkstyle plugin. This however works if I run install instead of compile, like this:

{code} mvn clean install -Pall {code}
Compile however works good when running it on a submodule but not on the root module.

I don't know how to proceed and maven told me to contact the plugin maintainers through this link: https://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Please let me know if there is anymore information that I need to provide or other ways to help out

Stacktrace:
{code}
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.12.1:checkstyle (validate) on project izettle-ejb: Execution validate of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.12.1:checkstyle failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.12.1:checkstyle (validate) on project izettle-ejb: Execution validate of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.12.1:checkstyle failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
    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:108)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:76)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:116)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:361)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:157)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution validate of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.12.1:checkstyle failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:144)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 19 more
Caused by: java.lang.NullPointerException
    at org.codehaus.plexus.resource.loader.JarHolder.getEntries(JarHolder.java:126)
    at org.codehaus.plexus.resource.loader.JarResourceLoader.loadJar(JarResourceLoader.java:100)
    at org.codehaus.plexus.resource.loader.JarResourceLoader.initialize(JarResourceLoader.java:63)
    at org.codehaus.plexus.resource.loader.JarResourceLoader.getResource(JarResourceLoader.java:141)
    at org.apache.maven.plugin.checkstyle.resource.LicenseResourceManager.getResource(LicenseResourceManager.java:70)
    at org.codehaus.plexus.resource.DefaultResourceManager.getResourceAsFile(DefaultResourceManager.java:91)
    at org.apache.maven.plugin.checkstyle.DefaultCheckstyleExecutor.getOverridingProperties(DefaultCheckstyleExecutor.java:460)
    at org.apache.maven.plugin.checkstyle.DefaultCheckstyleExecutor.getConfiguration(DefaultCheckstyleExecutor.java:299)
    at org.apache.maven.plugin.checkstyle.DefaultCheckstyleExecutor.executeCheckstyle(DefaultCheckstyleExecutor.java:185)
    at org.apache.maven.plugin.checkstyle.AbstractCheckstyleReport.executeReport(AbstractCheckstyleReport.java:488)
    at org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:156)
    at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:196)
    at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:104)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:133)
    ... 20 more
{code}

Root pom
{code:xml}
                                <plugin>
                    <artifactId>maven-checkstyle-plugin</artifactId>
                    <version>2.12.1</version>
                    <dependencies>
                        <dependency>
                            <groupId>com.company</groupId>
                            <artifactId>build-tools</artifactId>
                            <version>1.0</version>
                        </dependency>
                    </dependencies>
                    <executions>
                        <execution>
                            <id>validate</id>
                            <phase>install</phase>
                            <goals>
                                <goal>checkstyle</goal>
                            </goals>
                            <configuration>
                                <includeTestSourceDirectory>false</includeTestSourceDirectory>
                                <failsOnError>true</failsOnError>
                                <consoleOutput>true</consoleOutput>
                                <configLocation>${project.parent.basedir}/company-build-tools/src/main/resources/checkstyle/checkstyle.xml</configLocation>
                                <linkXRef>false</linkXRef>
                                <propertyExpansion>checkstyle-suppression-file=${project.basedir}/checkstyle-suppression.xml</propertyExpansion>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
{code}

{code:xml}
        <profile>
            <id>all</id>
            <build>
                <plugins>
                    <plugin>
                        <artifactId>maven-checkstyle-plugin</artifactId>
                        <executions>
                            <execution>
                                <configuration>
                                    <propertyExpansion>projectDir=${project.basedir </propertyExpansion>
                                </configuration>
                                <id>validate</id>
                                <goals>
                                    <goal>checkstyle</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>
{code}



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