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Custom resources filters

With version 2.5 you are now able to build your own custom resources filter(s).

Your custom resources filter classes must implements org.apache.maven.shared.filtering.MavenResourcesFiltering.

Custom Resources Filter Implementation

Your custom resources filter classes must be marked as a Plexus Component. Below a sample with a roleHint itFilter.

/**
 * @plexus.component role="org.apache.maven.shared.filtering.MavenResourcesFiltering" 
 *                   role-hint="itFilter"
 */
public class ItFilter
    implements MavenResourcesFiltering

Then you must activate in your build the mojo which will scan javadoc annotations to transform thoses to plexus component metadata.

  <plugin>
    <groupId>org.codehaus.plexus</groupId>
    <artifactId>plexus-component-metadata</artifactId>
    <version>1.7.1</version>
    <executions>
      <execution>
        <goals>
          <goal>generate-metadata</goal>
        </goals>
      </execution>
    </executions>
  </plugin>

Dependency declaration

Your classes must be available in the maven-resources-plugin classpath, this can be done with adding your artifact to the plugin dependencies. 

<project>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-resources-plugin</artifactId>
        <version>3.3.1</version>
        <configuration>
          ...
        </configuration>
        <dependencies>
          <dependency>
            <groupId>custom resources filters artifact groupId</groupId>
            <artifactId>custom resources filters artifact artifactId</artifactId>
            <version>custom resources filters artifact version</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
    ...
  </build>
  ...
</project>

Use of your Custom Resource Filter with the maven-resources-plugin

You must now declare you custom filter in the plugin. mavenFilteringHint must respect same syntax as your Plexus Component roleHint.

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-resources-plugin</artifactId>
    <version>3.3.1</version>
    <configuration>
      ...
      <mavenFilteringHints>
        <mavenFilteringHint>itFilter</mavenFilteringHint>
      </mavenFilteringHints>
     </configuration>
     ...
   </configuration>
 </plugin>

And that's it !