-/*******************************************************************************
- * 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;
-
-/**
- * Caches auxiliary data used during repository access like already processed metadata. The data in the cache is meant
- * for exclusive consumption by the repository system and is opaque to the cache implementation. <strong>Note:</strong>
- * Actual cache implementations must be thread-safe.
- *
- * @see RepositorySystemSession#getCache()
- */
-public interface RepositoryCache
-{
-
- /**
- * Puts the specified data into the cache. It is entirely up to the cache implementation how long this data will be
- * kept before being purged, i.e. callers must not make any assumptions about the lifetime of cached data.
- * <p>
- * <em>Warning:</em> The cache will directly save the provided reference. If the cached data is mutable, i.e. could
- * be modified after being put into the cache, the caller is responsible for creating a copy of the original data
- * and store the copy in the cache.
- *
- * @param session The repository session during which the cache is accessed, must not be {@code null}.
- * @param key The key to use for lookup of the data, must not be {@code null}.
- * @param data The data to store in the cache, may be {@code null}.
- */
- void put( RepositorySystemSession session, Object key, Object data );
-
- /**
- * Gets the specified data from the cache.
- * <p>
- * <em>Warning:</em> The cache will directly return the saved reference. If the cached data is to be modified after
- * its retrieval, the caller is responsible to create a copy of the returned data and use this instead of the cache
- * record.
- *
- * @param session The repository session during which the cache is accessed, must not be {@code null}.
- * @param key The key to use for lookup of the data, must not be {@code null}.
- * @return The requested data or {@code null} if none was present in the cache.
- */
- Object get( RepositorySystemSession session, Object key );
-
-}