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package org.apache.maven.artifact.repository;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* 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.
*
* @author Benjamin Bentmann
*/
@Deprecated
//
// Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
// this here, possibly indefinitely.
//
public interface RepositoryCache
{
/**
* Puts the specified data into the cache. <strong>Warning:</strong> 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 request The repository request from which this cache was retrieved, must not be {@code null}.
* @param key The key to use associate the data with, must not be {@code null}.
* @param data The data to store in the cache, may be {@code null}.
*/
void put( RepositoryRequest request, Object key, Object data );
/**
* Gets the specified data from the cache. <strong>Warning:</strong> 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 request The repository request from which this cache was retrieved, 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( RepositoryRequest request, Object key );
}
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