[MNG-7879] Add a bom packaging

maven-core/src/main/java/org/apache/maven/artifact/handler/providers/BomArtifactHandlerProvider.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.maven.artifact.handler.providers;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+import javax.inject.Provider;
+import javax.inject.Singleton;
+
+import org.apache.maven.artifact.handler.ArtifactHandler;
+import org.apache.maven.artifact.handler.DefaultArtifactHandler;
+
+/**
+ * {@code bom} artifact handler provider.
+ */
+@Named("bom")
+@Singleton
+public class BomArtifactHandlerProvider implements Provider<ArtifactHandler> {
+    private final ArtifactHandler artifactHandler;
+
+    @Inject
+    public BomArtifactHandlerProvider() {
+        this.artifactHandler = new DefaultArtifactHandler("pom", null, null, null, null, false, "none", false);
+    }
+
+    @Override
+    public ArtifactHandler get() {
+        return artifactHandler;
+    }
+}

maven-core/src/main/java/org/apache/maven/internal/transformation/ConsumerPomArtifactTransformer.java

@@ -63,6 +63,10 @@
 @Named("consumer-pom")
 public final class ConsumerPomArtifactTransformer {
 
+    private static final String BOM_PACKAGING = "bom";
+
+    public static final String POM_PACKAGING = "pom";
+
     private static final String CONSUMER_POM_CLASSIFIER = "consumer";
 
     private static final String BUILD_POM_CLASSIFIER = "build";
@@ -237,6 +241,9 @@ void transform(Path src, Path dest, Model model) {
             }
 
             // raw to consumer transform
+            if (BOM_PACKAGING.equals(consumer.getPackaging())) {
+                consumer = consumer.withPackaging(POM_PACKAGING);
+            }
             consumer = consumer.withRoot(false).withModules(null);
             if (consumer.getParent() != null) {
                 consumer = consumer.withParent(consumer.getParent().withRelativePath(null));

maven-core/src/main/java/org/apache/maven/lifecycle/providers/packaging/BomLifecycleMappingProvider.java

@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.maven.lifecycle.providers.packaging;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+import javax.inject.Singleton;
+
+/**
+ * {@code bom} packaging plugins bindings provider for {@code default} lifecycle.
+ */
+@Named("bom")
+@Singleton
+public final class BomLifecycleMappingProvider extends AbstractLifecycleMappingProvider {
+    // START SNIPPET: bom
+    @SuppressWarnings("checkstyle:linelength")
+    private static final String[] BINDINGS = {
+        "install", "org.apache.maven.plugins:maven-install-plugin:" + INSTALL_PLUGIN_VERSION + ":install",
+        "deploy", "org.apache.maven.plugins:maven-deploy-plugin:" + DEPLOY_PLUGIN_VERSION + ":deploy"
+    };
+    // END SNIPPET: bom
+
+    @Inject
+    public BomLifecycleMappingProvider() {
+        super(BINDINGS);
+    }
+}