src/main/java/org/apache/maven/plugins/assembly/functions/MavenProjects.java

/*
 * 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.plugins.assembly.functions;

import java.util.List;
import java.util.Set;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactUtils;
import org.apache.maven.project.MavenProject;
import org.slf4j.Logger;

/**
 *
 */
public class MavenProjects {
    public static void without(Iterable<MavenProject> source, String packagingType, MavenProjectConsumer consumer) {
        for (MavenProject project : source) {
            if (!packagingType.equals(project.getPackaging())) {
                consumer.accept(project);
            }
        }
    }

    public static void select(Iterable<MavenProject> source, String packagingType, MavenProjectConsumer consumer) {
        for (MavenProject project : source) {
            if (packagingType.equals(project.getPackaging())) {
                consumer.accept(project);
            }
        }
    }

    public static void select(
            Iterable<MavenProject> source,
            String packagingType,
            MavenProjectConsumer include,
            MavenProjectConsumer excluded) {
        for (MavenProject project : source) {
            if (packagingType.equals(project.getPackaging())) {
                include.accept(project);
            } else {
                excluded.accept(project);
            }
        }
    }

    public static Artifact findArtifactByClassifier(MavenProject mavenProject, String classifier) {
        final List<Artifact> attachments = mavenProject.getAttachedArtifacts();
        if ((attachments != null) && !attachments.isEmpty()) {
            for (final Artifact attachment : attachments) {
                if (classifier.equals(attachment.getClassifier())) {
                    return attachment;
                }
            }
        }
        return null;
    }

    public static MavenProjectConsumer log(final Logger logger) {
        return new MavenProjectConsumer() {
            @Override
            public void accept(MavenProject project) {
                final String projectId = ArtifactUtils.versionlessKey(project.getGroupId(), project.getArtifactId());

                logger.debug("Excluding POM-packaging module: " + projectId);
            }
        };
    }

    public static MavenProjectConsumer addTo(final Set<MavenProject> set) {
        return new MavenProjectConsumer() {
            @Override
            public void accept(MavenProject project) {
                set.add(project);
            }
        };
    }
}