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   *  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
   *
   *    https://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
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   ****************************************************************/
  
  package org.apache.cayenne.tools;
  
  import org.apache.cayenne.di.ClassLoaderManager;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.project.MavenProject;
  
  import java.io.File;
  import java.net.URL;
  import java.net.URLClassLoader;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Set;
  
  /**
   * Maven class loader manager to update class loader urls with project dependencies.
   *
   * @since 4.1
   */
  public class MavenPluginClassLoaderManager implements ClassLoaderManager {
  
      private MavenProject project;
      private List<URL> urls = new ArrayList<>();
  
      public MavenPluginClassLoaderManager(final MavenProject project) {
          this.project = project;
      }
  
      @Override
      public ClassLoader getClassLoader(final String resourceName) {
          return buildClassLoader();
      }
  
      private void addUrlFromArtifact(final Artifact artifact) {
  
          if (artifact == null) {
              return;
          }
  
          addUrlFromFile(artifact.getFile());
      }
  
      private void addUrlFromFile(final File file) {
          try {
              urls.add(file.toURI().toURL());
          } catch (Exception ignored) {
          }
      }
  
      private ClassLoader buildClassLoader() {
          @SuppressWarnings("deprecation")
          Set<Artifact> artifacts = project.getDependencyArtifacts();
          if (artifacts != null) {
              for (final Artifact artifact : artifacts) {
                  addUrlFromArtifact(artifact);
              }
          }
  
          addUrlFromArtifact(project.getArtifact());
  
          return new URLClassLoader(urls.toArray(new URL[0]), getClass().getClassLoader());
      }
  
  }
  