* under the License.
 */
package org.apache.maven.project;

import org.apache.maven.artifact.Artifact;

/**
 * This exception is thrown if an application attempts to attach
 * two of the same artifacts to a single project.
 *
 * TODO Make this a checked exception, and modify the API of MavenProjectHelper.
 * Currently, this modification would create compatibility problems for existing plugins.

            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>2.0.2</version>
            <executions>
              <execution>
                <id>attach-sources</id>
                <goals>
                  <goal>jar</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
          <plugin>

      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
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import org.apache.maven.api.Service;
import org.apache.maven.api.Session;
import org.apache.maven.api.annotations.Experimental;

/**
 * Resolves the artifact, i.e download the file when required and attach it to the artifact
 *
 * @since 4.0.0
 */
@Experimental
public interface ArtifactResolver extends Service {

    /**
     * @param request {@link ArtifactResolverRequest}

incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend...

            LOGGER.warn("artifact '{}' already attached, replacing previous instance", artifact);
            attachedArtifacts.set(index, artifact);
        } else {
            attachedArtifacts.add(artifact);
        }
    }

    /**
     * Returns a read-only list of the attached artifacts to this project.
     *
     * @return the attached artifacts of this project
     */

2.0-rc2-SNAPSHOT maven-compiler-plugin 2.0-beta-2-SNAPSHOT maven-deploy-plugin 2.0-beta-1 true true maven-install-plugin 2.0-beta-2-SNAPSHOT maven-jar-plugin 2.0-rc2-SNAPSHOT maven-javadoc-plugin 2.0-beta-2-SNAPSHOT attach-javadocs jar true maven-resources-plugin 2.0-beta-2 maven-source-plugin 2.0-rc1 attach-sources jar true maven-surefire-plugin 2.0-beta-2-SNAPSHOT false snapshots Maven Central Development Repository http://snapshots.maven.codehaus.org/maven2 false central Maven Repository Switchboard http:...

            </configuration>
          </execution>
          <execution>
            <id>install</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>set</goal>
              <goal>attach-pom</goal>
              <goal>install</goal>
            </goals>
            <configuration>
              <mainFile>dependency-1.jar</mainFile>
            </configuration>
          </execution>

                <phase>package</phase>
                <configuration>
                  <finalName>./</finalName>
                  <appendAssemblyId>false</appendAssemblyId>
                  <attach>false</attach>
                  <outputDirectory>${distributionTargetDir}</outputDirectory>
                  <descriptors>
                    <descriptor>src/assembly/dir.xml</descriptor>
                  </descriptors>

import org.apache.maven.artifact.metadata.ArtifactMetadata;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.metadata.RepositoryMetadataStoreException;

/**
 * Attach a POM to an artifact.
 *
 */
@Deprecated
public class ProjectArtifactMetadata extends AbstractArtifactMetadata {
    private final File file;

    public ProjectArtifactMetadata(Artifact artifact) {