| /** |
| * 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. |
| */ |
| |
| package org.apache.pdfbox.jbig2.util.cache; |
| |
| public interface Cache |
| { |
| |
| /** |
| * |
| * @param key value to be used as key |
| * @param value value to be stored |
| * @param sizeEstimate estimated size |
| * |
| * @return the old object, that was replaced if present. Otherwise {@code null}. |
| */ |
| Object put(Object key, Object value, int sizeEstimate); |
| |
| Object get(Object key); |
| |
| /** |
| * Removes all mappings from a map (optional operation). |
| * |
| * @throws UnsupportedOperationException if {@code clear()} is not supported by the map. |
| */ |
| void clear(); |
| |
| /** |
| * |
| * @param key the key of the to be removed object |
| * @return the removed object, if present. Otherwise {@code null}. |
| */ |
| Object remove(Object key); |
| } |