1 /* 2 * ==================================================================== 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * ==================================================================== 20 * 21 * This software consists of voluntary contributions made by many 22 * individuals on behalf of the Apache Software Foundation. For more 23 * information on the Apache Software Foundation, please see 24 * <http://www.apache.org/>. 25 * 26 */ 27 package org.apache.http.client.cache; 28 29 import java.io.IOException; 30 import java.io.InputStream; 31 import java.io.OutputStream; 32 33 /** 34 * Used by some {@link HttpCacheStorage} implementations to serialize 35 * {@link HttpCacheEntry} instances to a byte representation before 36 * storage. 37 */ 38 public interface HttpCacheEntrySerializer { 39 40 /** 41 * Serializes the given entry to a byte representation on the 42 * given {@link OutputStream}. 43 * @throws IOException 44 */ 45 void writeTo(HttpCacheEntry entry, OutputStream os) throws IOException; 46 47 /** 48 * Deserializes a byte representation of a cache entry by reading 49 * from the given {@link InputStream}. 50 * @throws IOException 51 */ 52 HttpCacheEntry readFrom(InputStream is) throws IOException; 53 54 }