[#272] Flatten the published POM

Author: marko-bekhta

pom.xml

@@ -102,6 +102,7 @@
         <version.enforcer.plugin>3.6.2</version.enforcer.plugin>
         <version.maven-resources-plugin>3.3.1</version.maven-resources-plugin>
         <version.maven-bundle-plugin>6.0.0</version.maven-bundle-plugin>
+        <version.flatten-maven-plugin>1.7.3</version.flatten-maven-plugin>
 
         <version.testng>7.11.0</version.testng>
 
@@ -187,6 +188,11 @@
                     <artifactId>maven-resources-plugin</artifactId>
                     <version>${version.maven-resources-plugin}</version>
                 </plugin>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>flatten-maven-plugin</artifactId>
+                    <version>${version.flatten-maven-plugin}</version>
+                </plugin>
             </plugins>
         </pluginManagement>
         <plugins>
@@ -368,6 +374,30 @@ Use is subject to <a href="{@docRoot}/doc-files/speclicense.html" target="_top">
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <configuration>
+                    <outputDirectory>${project.build.directory}</outputDirectory>
+                    <!-- Keep things like url, inceptionYear, authors...
+                         everything that's required by Maven Central repository -->
+                    <flattenMode>ossrh</flattenMode>
+                    <pomElements>
+                        <!-- We have some SNAPSHOT repositories,
+                            but there's no point in keeping it listed in the published POM files. -->
+                        <repositories>remove</repositories>
+                    </pomElements>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>flatten-pom</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>flatten</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>