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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/functors/ConstantTransformer.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.functors; import java.io.Serializable; import org.apache.commons.collections4.Transformer; /** * Transformer implementation that returns the same constant each time. * <p> * No check is made that the object is immutable. In general, only immutable * objects should use the constant factory. Mutable objects should * use the prototype factory. * * @since 3.0 */ public class ConstantTransformer<I, O> implements Transformer<I, O>, Serializable { /** Serial version UID */ private static final long serialVersionUID = 6374440726369055124L; /** Returns null each time */ @SuppressWarnings("rawtypes") public static final Transformer NULL_INSTANCE = new ConstantTransformer<>(null); /** The closures to call in turn */ private final O iConstant; /** * Get a typed null instance. * * @param <I> the input type * @param <O> the output type * @return Transformer<I, O> that always returns null. */ @SuppressWarnings("unchecked") // The null transformer works for all object types public static <I, O> Transformer<I, O> nullTransformer() { return NULL_INSTANCE; } /** * Transformer method that performs validation. * * @param <I> the input type * @param <O> the output type * @param constantToReturn the constant object to return each time in the factory * @return the <code>constant</code> factory. */ public static <I, O> Transformer<I, O> constantTransformer(final O constantToReturn) { if (constantToReturn == null) { return nullTransformer(); } return new ConstantTransformer<>(constantToReturn); } /** * Constructor that performs no validation. * Use <code>constantTransformer</code> if you want that. * * @param constantToReturn the constant to return each time */ public ConstantTransformer(final O constantToReturn) { super(); iConstant = constantToReturn; } /** * Transforms the input by ignoring it and returning the stored constant instead. * * @param input the input object which is ignored * @return the stored constant */ @Override public O transform(final I input) { return iConstant; } /** * Gets the constant. * * @return the constant * @since 3.1 */ public O getConstant() { return iConstant; } /** * {@inheritDoc} */ @Override public boolean equals(final Object obj) { if (obj == this) { return true; } if (obj instanceof ConstantTransformer == false) { return false; } final Object otherConstant = ((ConstantTransformer<?, ?>) obj).getConstant(); return otherConstant == getConstant() || otherConstant != null && otherConstant.equals(getConstant()); } /** * {@inheritDoc} */ @Override public int hashCode() { int result = "ConstantTransformer".hashCode() << 2; if (getConstant() != null) { result |= getConstant().hashCode(); } return result; } }
⏎ org/apache/commons/collections4/functors/ConstantTransformer.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, 29500👍, 0💬
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