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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/collection/TransformedCollection.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.collection; import java.util.ArrayList; import java.util.Collection; import java.util.List; import org.apache.commons.collections4.Transformer; /** * Decorates another {@link Collection} to transform objects that are added. * <p> * The add methods are affected by this class. * Thus objects must be removed or searched for using their transformed form. * For example, if the transformation converts Strings to Integers, you must * use the Integer form to remove objects. * <p> * This class is Serializable from Commons Collections 3.1. * * @param <E> the type of the elements in the collection * @since 3.0 */ public class TransformedCollection<E> extends AbstractCollectionDecorator<E> { /** Serialization version */ private static final long serialVersionUID = 8692300188161871514L; /** The transformer to use */ protected final Transformer<? super E, ? extends E> transformer; /** * Factory method to create a transforming collection. * <p> * If there are any elements already in the collection being decorated, they * are NOT transformed. * Contrast this with {@link #transformedCollection(Collection, Transformer)}. * * @param <E> the type of the elements in the collection * @param coll the collection to decorate, must not be null * @param transformer the transformer to use for conversion, must not be null * @return a new transformed collection * @throws NullPointerException if collection or transformer is null * @since 4.0 */ public static <E> TransformedCollection<E> transformingCollection(final Collection<E> coll, final Transformer<? super E, ? extends E> transformer) { return new TransformedCollection<>(coll, transformer); } /** * Factory method to create a transforming collection that will transform * existing contents of the specified collection. * <p> * If there are any elements already in the collection being decorated, they * will be transformed by this method. * Contrast this with {@link #transformingCollection(Collection, Transformer)}. * * @param <E> the type of the elements in the collection * @param collection the collection to decorate, must not be null * @param transformer the transformer to use for conversion, must not be null * @return a new transformed Collection * @throws NullPointerException if collection or transformer is null * @since 4.0 */ public static <E> TransformedCollection<E> transformedCollection(final Collection<E> collection, final Transformer<? super E, ? extends E> transformer) { final TransformedCollection<E> decorated = new TransformedCollection<>(collection, transformer); // null collection & transformer are disallowed by the constructor call above if (collection.size() > 0) { @SuppressWarnings("unchecked") // collection is of type E final E[] values = (E[]) collection.toArray(); // NOPMD - false positive for generics collection.clear(); for (final E value : values) { decorated.decorated().add(transformer.transform(value)); } } return decorated; } //----------------------------------------------------------------------- /** * Constructor that wraps (not copies). * <p> * If there are any elements already in the collection being decorated, they * are NOT transformed. * * @param coll the collection to decorate, must not be null * @param transformer the transformer to use for conversion, must not be null * @throws NullPointerException if collection or transformer is null */ protected TransformedCollection(final Collection<E> coll, final Transformer<? super E, ? extends E> transformer) { super(coll); if (transformer == null) { throw new NullPointerException("Transformer must not be null"); } this.transformer = transformer; } /** * Transforms an object. * <p> * The transformer itself may throw an exception if necessary. * * @param object the object to transform * @return a transformed object */ protected E transform(final E object) { return transformer.transform(object); } /** * Transforms a collection. * <p> * The transformer itself may throw an exception if necessary. * * @param coll the collection to transform * @return a transformed object */ protected Collection<E> transform(final Collection<? extends E> coll) { final List<E> list = new ArrayList<>(coll.size()); for (final E item : coll) { list.add(transform(item)); } return list; } //----------------------------------------------------------------------- @Override public boolean add(final E object) { return decorated().add(transform(object)); } @Override public boolean addAll(final Collection<? extends E> coll) { return decorated().addAll(transform(coll)); } }
⏎ org/apache/commons/collections4/collection/TransformedCollection.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, 20778👍, 0💬
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