Nullpointer at generate Sources with maven apt-plugin

[Mawster]

Hello guyz,

I searched everywhere for a solution, but i didn't found one - so i will try my luck here.

This is my pom:

...

<!-- Repositories -->

<repositories>

<repository>

<id>oss.sonatype.org</id>

<name>OSS Sonatype Staging</name>

<url>https://oss.sonatype.org/content/groups/staging</url>

</repository>

<repository>

<id>JBoss repository</id>

<url>https://repository.jboss.org/nexus/content/groups/public/</url>

</repository>

</repositories>

<dependencies>

<!-- Spring context 3.2.2 -->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-context</artifactId>

<version>3.2.5.RELEASE</version>

</dependency>

<!-- Spring Data 1.4.2 -->

<dependency>

<groupId>org.springframework.data</groupId>

<artifactId>spring-data-jpa</artifactId>

<version>1.4.2.RELEASE</version>

</dependency>

<!-- Spring JDBC 3.3.2 -->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-jdbc</artifactId>

<version>3.2.4.RELEASE</version>

</dependency>

<!-- Log4J 2 -->

<!-- <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-api</artifactId> 

<version>2.0-beta9</version> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> 

<artifactId>log4j-core</artifactId> <version>2.0-beta9</version> </dependency> -->

<!-- HSQLDB 2.2.9 -->

<dependency>

<groupId>com.h2database</groupId>

<artifactId>h2</artifactId>

<version>1.3.171</version>

</dependency>

<!-- Hibernate framework -->

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-core</artifactId>

<version>4.2.7.Final</version>

</dependency>

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-entitymanager</artifactId>

<version>4.2.7.Final</version>

</dependency>

<dependency>

<groupId>net.sf.dozer</groupId>

<artifactId>dozer</artifactId>

<version>5.4.0</version>

</dependency>

<dependency>

<groupId>com.mysema.querydsl</groupId>

<artifactId>querydsl-core</artifactId>

<version>3.2.4</version>

</dependency>

<dependency>

<groupId>com.mysema.querydsl</groupId>

<artifactId>querydsl-apt</artifactId>

<version>3.2.4</version>

<scope>provided</scope>

</dependency>

<dependency>

<groupId>com.mysema.querydsl</groupId>

<artifactId>querydsl-jpa</artifactId>

<version>3.2.4</version>

</dependency>

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

<version>1.6.1</version>

</dependency>

</dependencies>

<build>

<pluginManagement>

<plugins>

<!--This plugin's configuration is used to store Eclipse m2e settings 

only. It has no influence on the Maven build itself. -->

<plugin>

<groupId>org.eclipse.m2e</groupId>

<artifactId>lifecycle-mapping</artifactId>

<version>1.0.0</version>

<configuration>

<lifecycleMappingMetadata>

<pluginExecutions>

<pluginExecution>

<pluginExecutionFilter>

<groupId>org.codehaus.mojo</groupId>

<artifactId>aspectj-maven-plugin</artifactId>

<versionRange>[1.0,)</versionRange>

<goals>

<goal>test-compile</goal>

<goal>compile</goal>

</goals>

</pluginExecutionFilter>

<action>

<execute />

</action>

</pluginExecution>

</pluginExecutions>

</lifecycleMappingMetadata>

</configuration>

</plugin>

</plugins>

</pluginManagement>

<plugins>

<plugin>

<groupId>com.mysema.maven</groupId>

<artifactId>apt-maven-plugin</artifactId>

<version>1.1.1</version>

<executions>

<execution>

<goals>

<goal>process</goal>

</goals>

<configuration>

<outputDirectory>target/generated-sources/java</outputDirectory>

<processor>com.mysema.query.apt.hibernate.HibernateAnnotationProcessor</processor>

</configuration>

</execution>

</executions>

</plugin>

<plugin>

<groupId>org.codehaus.mojo</groupId>

<artifactId>build-helper-maven-plugin</artifactId>

<version>1.8</version>

<executions>

<execution>

<id>add-source</id>

<phase>generate-sources</phase>

<goals>

<goal>add-source</goal>

</goals>

<configuration>

<sources>

<source>target/generated-sources/apt</source>

</sources>

</configuration>

</execution>

</executions>

</plugin>

</plugins>

</build>

...

If I try to run generate-sources - I get the following Exception:

[DEBUG] Configuring mojo com.mysema.maven:apt-maven-plugin:1.1.1:process from plugin realm ClassRealm[plugin>com.mysema.maven:apt-maven-plugin:1.1.1, parent: sun.misc.Launcher$AppClassLoader@1174ec5]

[DEBUG] Configuring mojo 'com.mysema.maven:apt-maven-plugin:1.1.1:process' with basic configurator -->

[DEBUG]   (s) outputDirectory = D:\Development\Projects\RatioManager\ratiomanager\target\generated-sources\java

[DEBUG]   (s) pluginArtifacts = [com.mysema.maven:apt-maven-plugin:maven-plugin:1.1.1:, org.sonatype.plexus:plexus-build-api:jar:0.0.7:compile, org.codehaus.plexus:plexus-utils:jar:1.5.8:compile, backport-util-concurrent:backport-util-concurrent:jar:3.1:compile, org.codehaus.plexus:plexus-interpolation:jar:1.11:compile, junit:junit:jar:3.8.1:compile]

[DEBUG]   (s) processor = com.mysema.query.apt.hibernate.HibernateAnnotationProcessor

[DEBUG]   (s) project = MavenProject: com.incendium-software.ratiomanager:ratiomanager:0.0.1-SNAPSHOT @ D:\Development\Projects\RatioManager\ratiomanager\pom.xml

[DEBUG] -- end configuration --

[DEBUG] Using build context: org.sonatype.plexus.build.incremental.DefaultBuildContext@28ec5359

[ERROR] execute error

java.lang.RuntimeException: java.lang.NullPointerException

at com.sun.tools.javac.main.Main.compile(Main.java:469)

at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:132)

at com.mysema.maven.apt.AbstractProcessorMojo.execute(AbstractProcessorMojo.java:314)

at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)

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)

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: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: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 com.mysema.query.codegen.SimpleSerializerConfig.getConfig(SimpleSerializerConfig.java:29)

at com.mysema.query.apt.DefaultConfiguration.<init>(DefaultConfiguration.java:133)

at com.mysema.query.apt.jpa.JPAConfiguration.<init>(JPAConfiguration.java:72)

at com.mysema.query.apt.hibernate.HibernateConfiguration.<init>(HibernateConfiguration.java:43)

at com.mysema.query.apt.hibernate.HibernateAnnotationProcessor.createConfiguration(HibernateAnnotationProcessor.java:47)

at com.mysema.query.apt.AbstractQuerydslProcessor.process(AbstractQuerydslProcessor.java:102)

at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:793)

at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:722)

at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1700(JavacProcessingEnvironment.java:97)

at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1029)

at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1163)

at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1108)

at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:824)

at com.sun.tools.javac.main.Main.compile(Main.java:439)

... 23 more

Can someone help me ?

Thanks in advance!

[Timo Westkämper]

Hi.

Usually you get this kind of exception with a classpath conflict.

Could you check if your build works otherwise ok?

Br,
Timo

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Timo Westkämper
Mysema Oy
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www.mysema.com

[Mawster]

Hi Timo,

thanks for your fast respond.

Yeah the problem was funny.... Dumb failure of me .. JavaFX is not on the classpath of Java 7 so mvn install fails after mvn clean... I knew that issue, but didn't think about it...

If someone has this problem - with Java 7 you have to get the javafx libs on the classpath - i use a plugin:

http://zenjava.com/javafx/maven/index.html

With Java 8 the problem will be resolved because javafx will be completely bundled with Java.

Sorry for wasting your time.

Best Regards

On Thursday, November 14, 2013 9:49:03 AM UTC+1, Timo Westkämper wrote:

Hi.

Usually you get this kind of exception with a classpath conflict.

Could you check if your build works otherwise ok?

Br,
Timo