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Change By:
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Mirko Friedenhagen
(09/Jul/12 3:02 PM)
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Description:
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The rule throws a NPE when it is configured in the {{pluginManagement}} section of the POM as it will try to get needed information from the {{plugin}} section.
{noformat}
Caused by: java.lang.NullPointerException
at org.apache.maven.plugins.enforcer.RequirePropertyDiverges.getRuleConfigurations(RequirePropertyDiverges.java:241)
at org.apache.maven.plugins.enforcer.RequirePropertyDiverges.findDefiningParent(RequirePropertyDiverges.java:161)
at org.apache.maven.plugins.enforcer.RequirePropertyDiverges.execute(RequirePropertyDiverges.java:75)
at org.apache.maven.plugins.enforcer.EnforceMojo.execute(EnforceMojo.java:190)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
{noformat}
This succeeds:
{code:xml}
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.codehaus.mojo</groupId>
<artifactId>extra-enforcer-rules</artifactId>
<version>1.0-alpha-4-SNAPSHOT</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<configuration>
<rules>
<requirePropertyDiverges>
<property>project.url</property>
<regex>http://company/company-parent-pom/.*</regex>
</requirePropertyDiverges>
</rules>
</configuration>
</plugin>
</plugins>
</build>
{code}
while putting the rule into {{pluginManagement}} fails with a NPE:
{code:xml}
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.codehaus.mojo</groupId>
<artifactId>extra-enforcer-rules</artifactId>
<version>1.0-alpha-4-SNAPSHOT</version>
</dependency>
</dependencies>
<configuration>
<rules>
<requirePropertyDiverges>
<property>project.url</property>
<regex>http://company/company-parent-pom/.*</regex>
</requirePropertyDiverges>
</rules>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
</plugin>
</plugins>
</build>
{code}
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