+/*******************************************************************************
+ * Copyright (c) 2010, 2012 Sonatype, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Sonatype, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.aether.resolution;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.aether.RepositorySystem;
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.graph.Dependency;
+import org.eclipse.aether.repository.ArtifactRepository;
+import org.eclipse.aether.repository.RemoteRepository;
+
+/**
+ * The result from reading an artifact descriptor.
+ *
+ * @see RepositorySystem#readArtifactDescriptor(RepositorySystemSession, ArtifactDescriptorRequest)
+ */
+public final class ArtifactDescriptorResult
+{
+
+ private final ArtifactDescriptorRequest request;
+
+ private List<Exception> exceptions;
+
+ private List<Artifact> relocations;
+
+ private Collection<Artifact> aliases;
+
+ private Artifact artifact;
+
+ private ArtifactRepository repository;
+
+ private List<Dependency> dependencies;
+
+ private List<Dependency> managedDependencies;
+
+ private List<RemoteRepository> repositories;
+
+ private Map<String, Object> properties;
+
+ /**
+ * Creates a new result for the specified request.
+ *
+ * @param request The descriptor request, must not be {@code null}.
+ */
+ public ArtifactDescriptorResult( ArtifactDescriptorRequest request )
+ {
+ if ( request == null )
+ {
+ throw new IllegalArgumentException( "artifact descriptor request has not been specified" );
+ }
+ this.request = request;
+ artifact = request.getArtifact();
+ exceptions = Collections.emptyList();
+ relocations = Collections.emptyList();
+ aliases = Collections.emptyList();
+ dependencies = managedDependencies = Collections.emptyList();
+ repositories = Collections.emptyList();
+ properties = Collections.emptyMap();
+ }
+
+ /**
+ * Gets the descriptor request that was made.
+ *
+ * @return The descriptor request, never {@code null}.
+ */
+ public ArtifactDescriptorRequest getRequest()
+ {
+ return request;
+ }
+
+ /**
+ * Gets the exceptions that occurred while reading the artifact descriptor.
+ *
+ * @return The exceptions that occurred, never {@code null}.
+ */
+ public List<Exception> getExceptions()
+ {
+ return exceptions;
+ }
+
+ /**
+ * Sets the exceptions that occurred while reading the artifact descriptor.
+ *
+ * @param exceptions The exceptions that occurred, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setExceptions( List<Exception> exceptions )
+ {
+ if ( exceptions == null )
+ {
+ this.exceptions = Collections.emptyList();
+ }
+ else
+ {
+ this.exceptions = exceptions;
+ }
+ return this;
+ }
+
+ /**
+ * Records the specified exception while reading the artifact descriptor.
+ *
+ * @param exception The exception to record, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult addException( Exception exception )
+ {
+ if ( exception != null )
+ {
+ if ( exceptions.isEmpty() )
+ {
+ exceptions = new ArrayList<Exception>();
+ }
+ exceptions.add( exception );
+ }
+ return this;
+ }
+
+ /**
+ * Gets the relocations that were processed to read the artifact descriptor. The returned list denotes the hops that
+ * lead to the final artifact coordinates as given by {@link #getArtifact()}.
+ *
+ * @return The relocations that were processed, never {@code null}.
+ */
+ public List<Artifact> getRelocations()
+ {
+ return relocations;
+ }
+
+ /**
+ * Sets the relocations that were processed to read the artifact descriptor.
+ *
+ * @param relocations The relocations that were processed, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setRelocations( List<Artifact> relocations )
+ {
+ if ( relocations == null )
+ {
+ this.relocations = Collections.emptyList();
+ }
+ else
+ {
+ this.relocations = relocations;
+ }
+ return this;
+ }
+
+ /**
+ * Records the specified relocation hop while locating the artifact descriptor.
+ *
+ * @param artifact The artifact that got relocated, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult addRelocation( Artifact artifact )
+ {
+ if ( artifact != null )
+ {
+ if ( relocations.isEmpty() )
+ {
+ relocations = new ArrayList<Artifact>();
+ }
+ relocations.add( artifact );
+ }
+ return this;
+ }
+
+ /**
+ * Gets the known aliases for this artifact. An alias denotes a different artifact with (almost) the same contents
+ * and can be used to mark a patched rebuild of some other artifact as such, thereby allowing conflict resolution to
+ * consider the patched and the original artifact as a conflict.
+ *
+ * @return The aliases of the artifact, never {@code null}.
+ */
+ public Collection<Artifact> getAliases()
+ {
+ return aliases;
+ }
+
+ /**
+ * Sets the aliases of the artifact.
+ *
+ * @param aliases The aliases of the artifact, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setAliases( Collection<Artifact> aliases )
+ {
+ if ( aliases == null )
+ {
+ this.aliases = Collections.emptyList();
+ }
+ else
+ {
+ this.aliases = aliases;
+ }
+ return this;
+ }
+
+ /**
+ * Records the specified alias.
+ *
+ * @param alias The alias for the artifact, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult addAlias( Artifact alias )
+ {
+ if ( alias != null )
+ {
+ if ( aliases.isEmpty() )
+ {
+ aliases = new ArrayList<Artifact>();
+ }
+ aliases.add( alias );
+ }
+ return this;
+ }
+
+ /**
+ * Gets the artifact whose descriptor was read. This can be a different artifact than originally requested in case
+ * relocations were encountered.
+ *
+ * @return The artifact after following any relocations, never {@code null}.
+ */
+ public Artifact getArtifact()
+ {
+ return artifact;
+ }
+
+ /**
+ * Sets the artifact whose descriptor was read.
+ *
+ * @param artifact The artifact whose descriptor was read, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setArtifact( Artifact artifact )
+ {
+ this.artifact = artifact;
+ return this;
+ }
+
+ /**
+ * Gets the repository from which the descriptor was eventually resolved.
+ *
+ * @return The repository from which the descriptor was resolved or {@code null} if unknown.
+ */
+ public ArtifactRepository getRepository()
+ {
+ return repository;
+ }
+
+ /**
+ * Sets the repository from which the descriptor was resolved.
+ *
+ * @param repository The repository from which the descriptor was resolved, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setRepository( ArtifactRepository repository )
+ {
+ this.repository = repository;
+ return this;
+ }
+
+ /**
+ * Gets the list of direct dependencies of the artifact.
+ *
+ * @return The list of direct dependencies, never {@code null}
+ */
+ public List<Dependency> getDependencies()
+ {
+ return dependencies;
+ }
+
+ /**
+ * Sets the list of direct dependencies of the artifact.
+ *
+ * @param dependencies The list of direct dependencies, may be {@code null}
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setDependencies( List<Dependency> dependencies )
+ {
+ if ( dependencies == null )
+ {
+ this.dependencies = Collections.emptyList();
+ }
+ else
+ {
+ this.dependencies = dependencies;
+ }
+ return this;
+ }
+
+ /**
+ * Adds the specified direct dependency.
+ *
+ * @param dependency The direct dependency to add, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult addDependency( Dependency dependency )
+ {
+ if ( dependency != null )
+ {
+ if ( dependencies.isEmpty() )
+ {
+ dependencies = new ArrayList<Dependency>();
+ }
+ dependencies.add( dependency );
+ }
+ return this;
+ }
+
+ /**
+ * Gets the dependency management information.
+ *
+ * @return The dependency management information.
+ */
+ public List<Dependency> getManagedDependencies()
+ {
+ return managedDependencies;
+ }
+
+ /**
+ * Sets the dependency management information.
+ *
+ * @param dependencies The dependency management information, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setManagedDependencies( List<Dependency> dependencies )
+ {
+ if ( dependencies == null )
+ {
+ this.managedDependencies = Collections.emptyList();
+ }
+ else
+ {
+ this.managedDependencies = dependencies;
+ }
+ return this;
+ }
+
+ /**
+ * Adds the specified managed dependency.
+ *
+ * @param dependency The managed dependency to add, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult addManagedDependency( Dependency dependency )
+ {
+ if ( dependency != null )
+ {
+ if ( managedDependencies.isEmpty() )
+ {
+ managedDependencies = new ArrayList<Dependency>();
+ }
+ managedDependencies.add( dependency );
+ }
+ return this;
+ }
+
+ /**
+ * Gets the remote repositories listed in the artifact descriptor.
+ *
+ * @return The remote repositories listed in the artifact descriptor, never {@code null}.
+ */
+ public List<RemoteRepository> getRepositories()
+ {
+ return repositories;
+ }
+
+ /**
+ * Sets the remote repositories listed in the artifact descriptor.
+ *
+ * @param repositories The remote repositories listed in the artifact descriptor, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setRepositories( List<RemoteRepository> repositories )
+ {
+ if ( repositories == null )
+ {
+ this.repositories = Collections.emptyList();
+ }
+ else
+ {
+ this.repositories = repositories;
+ }
+ return this;
+ }
+
+ /**
+ * Adds the specified remote repository.
+ *
+ * @param repository The remote repository to add, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult addRepository( RemoteRepository repository )
+ {
+ if ( repository != null )
+ {
+ if ( repositories.isEmpty() )
+ {
+ repositories = new ArrayList<RemoteRepository>();
+ }
+ repositories.add( repository );
+ }
+ return this;
+ }
+
+ /**
+ * Gets any additional information about the artifact in form of key-value pairs. <em>Note:</em> Regardless of their
+ * actual type, all property values must be treated as being read-only.
+ *
+ * @return The additional information about the artifact, never {@code null}.
+ */
+ public Map<String, Object> getProperties()
+ {
+ return properties;
+ }
+
+ /**
+ * Sets any additional information about the artifact in form of key-value pairs.
+ *
+ * @param properties The additional information about the artifact, may be {@code null}.
+ * @return This result for chaining, never {@code null}.
+ */
+ public ArtifactDescriptorResult setProperties( Map<String, Object> properties )
+ {
+ if ( properties == null )
+ {
+ this.properties = Collections.emptyMap();
+ }
+ else
+ {
+ this.properties = properties;
+ }
+ return this;
+ }
+
+ @Override
+ public String toString()
+ {
+ return getArtifact() + " -> " + getDependencies();
+ }
+
+}