NullPointerException when maven-javadoc-plugin configuration defines multiple
group elements within a groups list element.
--------------------------------------------------------------------------------------------------------------------------
Key: MANT-52
URL: http://jira.codehaus.org/browse/MANT-52
Project: Maven 2.x Ant Plugin
Issue Type: Bug
Affects Versions: 2.2
Environment: $ mvn --version
Maven version: 2.0.10
Java version: 1.6.0_0
OS name: "linux" version: "2.6.29-gentoo-r3" arch: "amd64" Family: "unix"
Reporter: Alistair Bush
Attachments: maven-ant-plugin.patch
When attempting to run mvn ant:ant on sesame-2.2.4 available here [1]. A
NullPointerException is raised. [2] for build log segment.
It seems that when a pom ( or a parents pom ) defines the following
configuration the existing code the error was occuring. I have assumed in my
patch that this is the only valid way of defining groups. But at least the fix
is small and easy for you to figure out.
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<configuration>
<aggregate>true</aggregate>
<source>1.5</source>
<groups>
<group>
<title>Repository
API</title>
<packages>org.openrdf.repository*</packages>
</group>
<group>
<title>RDF Model
API</title>
<packages>org.openrdf.model*</packages>
</group>
...
...
</groups>
<links>
<link>http://java.sun.com/j2se/1.5.0/docs/api/</link>
<link>http://repository.aduna-software.org/docs/info.aduna/api/</link>
</links>
</configuration>
[1] svn co http://repo.aduna-software.org/svn/org.openrdf/sesame/tags/2.2.4/
[2]
[INFO] Building OpenRDF Sesame Core
[INFO] task-segment: [ant:ant]
[INFO] ------------------------------------------------------------------------
[INFO] [ant:ant]
[INFO] Wrote Ant project for sesame-core to
/home/alistair/gentoo/tmp/sesame-2.2.4/core
[INFO] ------------------------------------------------------------------------
[INFO] Building OpenRDF Sesame: Model
[INFO] task-segment: [ant:ant]
[INFO] ------------------------------------------------------------------------
[INFO] [ant:ant]
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
at
org.codehaus.plexus.util.xml.PrettyPrintXMLWriter.escapeXml(PrettyPrintXMLWriter.java:151)
at
org.codehaus.plexus.util.xml.PrettyPrintXMLWriter.escapeXmlAttribute(PrettyPrintXMLWriter.java:166)
at
org.codehaus.plexus.util.xml.PrettyPrintXMLWriter.addAttribute(PrettyPrintXMLWriter.java:190)
at
org.apache.maven.plugin.ant.AntBuildWriterUtil.writeJavadocTask(AntBuildWriterUtil.java:473)
at
org.apache.maven.plugin.ant.AntBuildWriter.writeJavadocTarget(AntBuildWriter.java:991)
at
org.apache.maven.plugin.ant.AntBuildWriter.writeGeneratedBuildXml(AntBuildWriter.java:304)
at
org.apache.maven.plugin.ant.AntBuildWriter.writeBuildXmls(AntBuildWriter.java:113)
at org.apache.maven.plugin.ant.AntMojo.execute(AntMojo.java:112)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:453)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:559)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:513)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:483)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:331)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:292)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:301)
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:616)
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)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3 seconds
[INFO] Finished at: Tue Jun 16 00:03:36 NZST 2009
[INFO] Final Memory: 19M/184M
[INFO] ------------------------------------------------------------------------
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