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commons-collections4-4.2-sources.jar - Apache Commons Collections
commons-collections4-4.2-sources.jar is the source JAR file for Apache Commons Collections 4.2, which provides additional collection handling functionalities on top of JDK library.
JAR File Size and Download Location:
JAR name: commons-collections4-4.2-sources.jar Target JDK version: 1.7 Dependency: None File size: 708,599 bytes Release date: 08-Jul-2018 Download: Apache Commons Collections
✍: FYIcenter.com
⏎ org/apache/commons/collections4/map/LazySortedMap.java
/* * 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.commons.collections4.map; import java.util.Comparator; import java.util.SortedMap; import org.apache.commons.collections4.Factory; import org.apache.commons.collections4.Transformer; /** * Decorates another <code>SortedMap</code> to create objects in the map on demand. * <p> * When the {@link #get(Object)} method is called with a key that does not * exist in the map, the factory is used to create the object. The created * object will be added to the map using the requested key. * <p> * For instance: * <pre> * Factory<Date> factory = new Factory<Date>() { * public Date create() { * return new Date(); * } * } * SortedMap<String, Date> lazy = * LazySortedMap.lazySortedMap(new HashMap<String, Date>(), factory); * Date date = lazy.get("NOW"); * </pre> * * After the above code is executed, <code>date</code> will refer to * a new <code>Date</code> instance. Furthermore, that <code>Date</code> * instance is mapped to the "NOW" key in the map. * <p> * <strong>Note that LazySortedMap is not synchronized and is not thread-safe.</strong> * If you wish to use this map from multiple threads concurrently, you must use * appropriate synchronization. The simplest approach is to wrap this map * using {@link java.util.Collections#synchronizedSortedMap}. This class may throw * exceptions when accessed by concurrent threads without synchronization. * <p> * This class is Serializable from Commons Collections 3.1. * * @param <K> the type of the keys in this map * @param <V> the type of the values in this map * @since 3.0 */ public class LazySortedMap<K,V> extends LazyMap<K,V> implements SortedMap<K,V> { /** Serialization version */ private static final long serialVersionUID = 2715322183617658933L; /** * Factory method to create a lazily instantiated sorted map. * * @param <K> the key type * @param <V> the value type * @param map the map to decorate, must not be null * @param factory the factory to use, must not be null * @return a new lazy sorted map * @throws NullPointerException if map or factory is null * @since 4.0 */ public static <K, V> LazySortedMap<K, V> lazySortedMap(final SortedMap<K, V> map, final Factory<? extends V> factory) { return new LazySortedMap<>(map, factory); } /** * Factory method to create a lazily instantiated sorted map. * * @param <K> the key type * @param <V> the value type * @param map the map to decorate, must not be null * @param factory the factory to use, must not be null * @return a new lazy sorted map * @throws NullPointerException if map or factory is null * @since 4.0 */ public static <K, V> LazySortedMap<K, V> lazySortedMap(final SortedMap<K, V> map, final Transformer<? super K, ? extends V> factory) { return new LazySortedMap<>(map, factory); } //----------------------------------------------------------------------- /** * Constructor that wraps (not copies). * * @param map the map to decorate, must not be null * @param factory the factory to use, must not be null * @throws NullPointerException if map or factory is null */ protected LazySortedMap(final SortedMap<K,V> map, final Factory<? extends V> factory) { super(map, factory); } /** * Constructor that wraps (not copies). * * @param map the map to decorate, must not be null * @param factory the factory to use, must not be null * @throws NullPointerException if map or factory is null */ protected LazySortedMap(final SortedMap<K,V> map, final Transformer<? super K, ? extends V> factory) { super(map, factory); } //----------------------------------------------------------------------- /** * Gets the map being decorated. * * @return the decorated map */ protected SortedMap<K,V> getSortedMap() { return (SortedMap<K,V>) map; } //----------------------------------------------------------------------- @Override public K firstKey() { return getSortedMap().firstKey(); } @Override public K lastKey() { return getSortedMap().lastKey(); } @Override public Comparator<? super K> comparator() { return getSortedMap().comparator(); } @Override public SortedMap<K,V> subMap(final K fromKey, final K toKey) { final SortedMap<K,V> map = getSortedMap().subMap(fromKey, toKey); return new LazySortedMap<>(map, factory); } @Override public SortedMap<K,V> headMap(final K toKey) { final SortedMap<K,V> map = getSortedMap().headMap(toKey); return new LazySortedMap<>(map, factory); } @Override public SortedMap<K,V> tailMap(final K fromKey) { final SortedMap<K,V> map = getSortedMap().tailMap(fromKey); return new LazySortedMap<>(map, factory); } }
⏎ org/apache/commons/collections4/map/LazySortedMap.java
Or download all of them as a single archive file:
File name: commons-collections4-4.2-sources.jar File size: 708599 bytes Release date: 2018-07-08 Download
⇒ Download and Install commons-collections4-4.1-bin.zip
⇐ What Is commons-collections4-4.2.jar
2023-03-28, 27515👍, 0💬
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