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/*******************************************************************************
 * Copyright (c) 2010, 2014 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;

import java.util.Collection;
import java.util.List;

import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.collection.CollectRequest;
import org.eclipse.aether.collection.CollectResult;
import org.eclipse.aether.collection.DependencyCollectionException;
import org.eclipse.aether.deployment.DeployRequest;
import org.eclipse.aether.deployment.DeployResult;
import org.eclipse.aether.deployment.DeploymentException;
import org.eclipse.aether.installation.InstallRequest;
import org.eclipse.aether.installation.InstallResult;
import org.eclipse.aether.installation.InstallationException;
import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.LocalRepositoryManager;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.resolution.ArtifactDescriptorException;
import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
import org.eclipse.aether.resolution.ArtifactDescriptorResult;
import org.eclipse.aether.resolution.ArtifactRequest;
import org.eclipse.aether.resolution.ArtifactResolutionException;
import org.eclipse.aether.resolution.ArtifactResult;
import org.eclipse.aether.resolution.DependencyRequest;
import org.eclipse.aether.resolution.DependencyResolutionException;
import org.eclipse.aether.resolution.DependencyResult;
import org.eclipse.aether.resolution.MetadataRequest;
import org.eclipse.aether.resolution.MetadataResult;
import org.eclipse.aether.resolution.VersionRangeRequest;
import org.eclipse.aether.resolution.VersionRangeResolutionException;
import org.eclipse.aether.resolution.VersionRangeResult;
import org.eclipse.aether.resolution.VersionRequest;
import org.eclipse.aether.resolution.VersionResolutionException;
import org.eclipse.aether.resolution.VersionResult;

/**
 * The main entry point to the repository system and its functionality. Note that obtaining a concrete implementation of
 * this interface (e.g. via dependency injection, service locator, etc.) is dependent on the application and its
 * specific needs, please consult the online documentation for examples and directions on booting the system.
 * 
 * @noimplement This interface is not intended to be implemented by clients.
 * @noextend This interface is not intended to be extended by clients.
 */
public interface RepositorySystem
{

    /**
     * Expands a version range to a list of matching versions, in ascending order. For example, resolves "[3.8,4.0)" to
     * "3.8", "3.8.1", "3.8.2". Note that the returned list of versions is only dependent on the configured repositories
     * and their contents, the list is not processed by the {@link RepositorySystemSession#getVersionFilter() session's
     * version filter}.
     * 

* The supplied request may also refer to a single concrete version rather than a version range. In this case * though, the result contains simply the (parsed) input version, regardless of the repositories and their contents. * * @param session The repository session, must not be {@code null}. * @param request The version range request, must not be {@code null}. * @return The version range result, never {@code null}. * @throws VersionRangeResolutionException If the requested range could not be parsed. Note that an empty range does * not raise an exception. * @see #newResolutionRepositories(RepositorySystemSession, List) */ VersionRangeResult resolveVersionRange( RepositorySystemSession session, VersionRangeRequest request ) throws VersionRangeResolutionException; /** * Resolves an artifact's meta version (if any) to a concrete version. For example, resolves "1.0-SNAPSHOT" to * "1.0-20090208.132618-23". * * @param session The repository session, must not be {@code null}. * @param request The version request, must not be {@code null}. * @return The version result, never {@code null}. * @throws VersionResolutionException If the metaversion could not be resolved. * @see #newResolutionRepositories(RepositorySystemSession, List) */ VersionResult resolveVersion( RepositorySystemSession session, VersionRequest request ) throws VersionResolutionException; /** * Gets information about an artifact like its direct dependencies and potential relocations. * * @param session The repository session, must not be {@code null}. * @param request The descriptor request, must not be {@code null}. * @return The descriptor result, never {@code null}. * @throws ArtifactDescriptorException If the artifact descriptor could not be read. * @see RepositorySystemSession#getArtifactDescriptorPolicy() * @see #newResolutionRepositories(RepositorySystemSession, List) */ ArtifactDescriptorResult readArtifactDescriptor( RepositorySystemSession session, ArtifactDescriptorRequest request ) throws ArtifactDescriptorException; /** * Collects the transitive dependencies of an artifact and builds a dependency graph. Note that this operation is * only concerned about determining the coordinates of the transitive dependencies. To also resolve the actual * artifact files, use {@link #resolveDependencies(RepositorySystemSession, DependencyRequest)}. * * @param session The repository session, must not be {@code null}. * @param request The collection request, must not be {@code null}. * @return The collection result, never {@code null}. * @throws DependencyCollectionException If the dependency tree could not be built. * @see RepositorySystemSession#getDependencyTraverser() * @see RepositorySystemSession#getDependencyManager() * @see RepositorySystemSession#getDependencySelector() * @see RepositorySystemSession#getVersionFilter() * @see RepositorySystemSession#getDependencyGraphTransformer() * @see #newResolutionRepositories(RepositorySystemSession, List) */ CollectResult collectDependencies( RepositorySystemSession session, CollectRequest request ) throws DependencyCollectionException; /** * Collects and resolves the transitive dependencies of an artifact. This operation is essentially a combination of * {@link #collectDependencies(RepositorySystemSession, CollectRequest)} and * {@link #resolveArtifacts(RepositorySystemSession, Collection)}. * * @param session The repository session, must not be {@code null}. * @param request The dependency request, must not be {@code null}. * @return The dependency result, never {@code null}. * @throws DependencyResolutionException If the dependency tree could not be built or any dependency artifact could * not be resolved. * @see #newResolutionRepositories(RepositorySystemSession, List) */ DependencyResult resolveDependencies( RepositorySystemSession session, DependencyRequest request ) throws DependencyResolutionException; /** * Resolves the path for an artifact. The artifact will be downloaded to the local repository if necessary. An * artifact that is already resolved will be skipped and is not re-resolved. In general, callers must not assume any * relationship between an artifact's resolved filename and its coordinates. Note that this method assumes that any * relocations have already been processed. * * @param session The repository session, must not be {@code null}. * @param request The resolution request, must not be {@code null}. * @return The resolution result, never {@code null}. * @throws ArtifactResolutionException If the artifact could not be resolved. * @see Artifact#getFile() * @see #newResolutionRepositories(RepositorySystemSession, List) */ ArtifactResult resolveArtifact( RepositorySystemSession session, ArtifactRequest request ) throws ArtifactResolutionException; /** * Resolves the paths for a collection of artifacts. Artifacts will be downloaded to the local repository if * necessary. Artifacts that are already resolved will be skipped and are not re-resolved. In general, callers must * not assume any relationship between an artifact's filename and its coordinates. Note that this method assumes * that any relocations have already been processed. * * @param session The repository session, must not be {@code null}. * @param requests The resolution requests, must not be {@code null}. * @return The resolution results (in request order), never {@code null}. * @throws ArtifactResolutionException If any artifact could not be resolved. * @see Artifact#getFile() * @see #newResolutionRepositories(RepositorySystemSession, List) */ List resolveArtifacts( RepositorySystemSession session, Collection requests ) throws ArtifactResolutionException; /** * Resolves the paths for a collection of metadata. Metadata will be downloaded to the local repository if * necessary, e.g. because it hasn't been cached yet or the cache is deemed outdated. * * @param session The repository session, must not be {@code null}. * @param requests The resolution requests, must not be {@code null}. * @return The resolution results (in request order), never {@code null}. * @see Metadata#getFile() * @see #newResolutionRepositories(RepositorySystemSession, List) */ List resolveMetadata( RepositorySystemSession session, Collection requests ); /** * Installs a collection of artifacts and their accompanying metadata to the local repository. * * @param session The repository session, must not be {@code null}. * @param request The installation request, must not be {@code null}. * @return The installation result, never {@code null}. * @throws InstallationException If any artifact/metadata from the request could not be installed. */ InstallResult install( RepositorySystemSession session, InstallRequest request ) throws InstallationException; /** * Uploads a collection of artifacts and their accompanying metadata to a remote repository. * * @param session The repository session, must not be {@code null}. * @param request The deployment request, must not be {@code null}. * @return The deployment result, never {@code null}. * @throws DeploymentException If any artifact/metadata from the request could not be deployed. * @see #newDeploymentRepository(RepositorySystemSession, RemoteRepository) */ DeployResult deploy( RepositorySystemSession session, DeployRequest request ) throws DeploymentException; /** * Creates a new manager for the specified local repository. If the specified local repository has no type, the * default local repository type of the system will be used. Note: It is expected that this method * invocation is one of the last steps of setting up a new session, in particular any configuration properties * should have been set already. * * @param session The repository system session from which to configure the manager, must not be {@code null}. * @param localRepository The local repository to create a manager for, must not be {@code null}. * @return The local repository manager, never {@code null}. * @throws IllegalArgumentException If the specified repository type is not recognized or no base directory is * given. */ LocalRepositoryManager newLocalRepositoryManager( RepositorySystemSession session, LocalRepository localRepository ); /** * Creates a new synchronization context. * * @param session The repository session during which the context will be used, must not be {@code null}. * @param shared A flag indicating whether access to the artifacts/metadata associated with the new context can be * shared among concurrent readers or whether access needs to be exclusive to the calling thread. * @return The synchronization context, never {@code null}. */ SyncContext newSyncContext( RepositorySystemSession session, boolean shared ); /** * Forms remote repositories suitable for artifact resolution by applying the session's authentication selector and * similar network configuration to the given repository prototypes. As noted for * {@link RepositorySystemSession#getAuthenticationSelector()} etc. the remote repositories passed to e.g. * {@link #resolveArtifact(RepositorySystemSession, ArtifactRequest) resolveArtifact()} are used as is and expected * to already carry any required authentication or proxy configuration. This method can be used to apply the * authentication/proxy configuration from a session to a bare repository definition to obtain the complete * repository definition for use in the resolution request. * * @param session The repository system session from which to configure the repositories, must not be {@code null}. * @param repositories The repository prototypes from which to derive the resolution repositories, must not be * {@code null} or contain {@code null} elements. * @return The resolution repositories, never {@code null}. Note that there is generally no 1:1 relationship of the * obtained repositories to the original inputs due to mirror selection potentially aggregating multiple * repositories. * @see #newDeploymentRepository(RepositorySystemSession, RemoteRepository) */ List newResolutionRepositories( RepositorySystemSession session, List repositories ); /** * Forms a remote repository suitable for artifact deployment by applying the session's authentication selector and * similar network configuration to the given repository prototype. As noted for * {@link RepositorySystemSession#getAuthenticationSelector()} etc. the remote repository passed to * {@link #deploy(RepositorySystemSession, DeployRequest) deploy()} is used as is and expected to already carry any * required authentication or proxy configuration. This method can be used to apply the authentication/proxy * configuration from a session to a bare repository definition to obtain the complete repository definition for use * in the deploy request. * * @param session The repository system session from which to configure the repository, must not be {@code null}. * @param repository The repository prototype from which to derive the deployment repository, must not be * {@code null}. * @return The deployment repository, never {@code null}. * @see #newResolutionRepositories(RepositorySystemSession, List) */ RemoteRepository newDeploymentRepository( RepositorySystemSession session, RemoteRepository repository ); }





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