Add stable JPMS module names to Morphia core/kotlin artifacts

core/pom.xml

@@ -17,7 +17,13 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.5.0</version>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>dev.morphia.core</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
                 <executions>
                     <execution>
                         <id>test-jar</id>

core/src/test/java/dev/morphia/test/ModuleMetadataTest.java

@@ -0,0 +1,52 @@
+package dev.morphia.test;
+
+import java.io.File;
+import java.io.FileReader;
+import java.util.Optional;
+
+import org.apache.maven.model.Model;
+import org.apache.maven.model.Plugin;
+import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
+import org.codehaus.plexus.util.xml.Xpp3Dom;
+import org.testng.annotations.Test;
+
+import static dev.morphia.test.TestBase.GIT_ROOT;
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertNotNull;
+import static org.testng.Assert.assertTrue;
+
+public class ModuleMetadataTest {
+    @Test
+    public void coreJarDefinesAutomaticModuleName() throws Exception {
+        assertAutomaticModuleName("core/pom.xml", "dev.morphia.core");
+    }
+
+    @Test
+    public void kotlinJarDefinesAutomaticModuleName() throws Exception {
+        assertAutomaticModuleName("kotlin/pom.xml", "dev.morphia.kotlin");
+    }
+
+    private static void assertAutomaticModuleName(String path, String expectedValue) throws Exception {
+        MavenXpp3Reader reader = new MavenXpp3Reader();
+        Model model;
+        try (FileReader fileReader = new FileReader(new File(GIT_ROOT, path).getAbsoluteFile())) {
+            model = reader.read(fileReader);
+        }
+
+        Optional<Plugin> plugin = model.getBuild().getPlugins().stream()
+                .filter(p -> "maven-jar-plugin".equals(p.getArtifactId()))
+                .findFirst();
+
+        assertTrue(plugin.isPresent(), "Expected maven-jar-plugin in " + path);
+
+        Xpp3Dom configuration = (Xpp3Dom) plugin.get().getConfiguration();
+        assertNotNull(configuration, "Expected maven-jar-plugin configuration in " + path);
+        Xpp3Dom archive = configuration.getChild("archive");
+        assertNotNull(archive, "Expected archive configuration in " + path);
+        Xpp3Dom manifestEntries = archive.getChild("manifestEntries");
+        assertNotNull(manifestEntries, "Expected manifestEntries configuration in " + path);
+        Xpp3Dom automaticModuleName = manifestEntries.getChild("Automatic-Module-Name");
+        assertNotNull(automaticModuleName, "Expected Automatic-Module-Name entry in " + path);
+        assertEquals(automaticModuleName.getValue(), expectedValue);
+    }
+}

kotlin/pom.xml

@@ -12,6 +12,22 @@
 
     <artifactId>morphia-kotlin</artifactId>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>dev.morphia.kotlin</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
     <dependencies>
         <dependency>
             <groupId>dev.morphia.morphia</groupId>
@@ -47,4 +63,3 @@
         </dependency>
     </dependencies>
 </project>
-

pom.xml

@@ -94,7 +94,12 @@
                         <compilerArgs>
                             <arg>-parameters</arg>
                         </compilerArgs>
-                    </configuration>
+                        </configuration>
+                    </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-jar-plugin</artifactId>
+                    <version>3.5.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.revapi</groupId>