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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(s):
Benjamin Bentmann
//
// 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. Warning: 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.

Parameters:
request The repository request from which this cache was retrieved, must not be null.
key The key to use associate the data with, must not be null.
data The data to store in the cache, may be null.
    void putRepositoryRequest requestObject keyObject data );

    
Gets the specified data from the cache. Warning: 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.

Parameters:
request The repository request from which this cache was retrieved, must not be null.
key The key to use for lookup of the data, must not be null.
Returns:
The requested data or null if none was present in the cache.
    Object getRepositoryRequest requestObject key );
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