| /******************************************************************************* |
| * Copyright (c) 2008, 2010 VMware 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: |
| * VMware Inc. - initial contribution |
| *******************************************************************************/ |
| |
| package org.eclipse.virgo.apps.repository.core; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * A <code>RepositoryManager</code> manages repositories, providing access to repository indices and artifacts. |
| * |
| * <p /> |
| * |
| * <strong>Concurrent Semantics</strong><br /> |
| * |
| * Implementations <strong>must</strong> be thread-safe. |
| * |
| */ |
| public interface RepositoryManager { |
| |
| /** |
| * Returns the {@link RepositoryIndex} of the repository identified by the supplied repository name. |
| * |
| * @param repositoryName The name of the repository for which the index is required |
| * |
| * @return The named repository's index, or <code>null</code> if a repository with the supplied name is not known. |
| * @throws IOException if index cannot be accessed |
| */ |
| RepositoryIndex getIndex(String repositoryName) throws IOException; |
| |
| /** |
| * Returns an <code>InputStream</code> from which the artifact, stored in the repository identified by the supplied |
| * repository name, and identified by the supplied type, name, and version, can be read. |
| * |
| * @param repositoryName The name of the repository that holds the required artifact |
| * @param type The type of the required artifact |
| * @param name The name of the required artifact |
| * @param version The version of the required artifact |
| * |
| * @return The requested artifact, or <code>null</code> if the artifact does not exist. |
| */ |
| InputStream getArtifact(String repositoryName, String type, String name, String version); |
| } |