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Java example source code file (Funnels.java)
The Funnels.java Java example source code/* * Copyright (C) 2011 The Guava Authors * * Licensed 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 com.google.common.hash; import com.google.common.annotations.Beta; import com.google.common.base.Preconditions; import java.io.OutputStream; import java.io.Serializable; import java.nio.charset.Charset; import javax.annotation.Nullable; /** * Funnels for common types. All implementations are serializable. * * @author Dimitris Andreou * @since 11.0 */ @Beta public final class Funnels { private Funnels() {} /** * Returns a funnel that extracts the bytes from a {@code byte} array. */ public static Funnel<byte[]> byteArrayFunnel() { return ByteArrayFunnel.INSTANCE; } private enum ByteArrayFunnel implements Funnel<byte[]> { INSTANCE; public void funnel(byte[] from, PrimitiveSink into) { into.putBytes(from); } @Override public String toString() { return "Funnels.byteArrayFunnel()"; } } /** * Returns a funnel that extracts the characters from a {@code CharSequence}, a character at a * time, without performing any encoding. If you need to use a specific encoding, use * {@link Funnels#stringFunnel(Charset)} instead. * * @since 15.0 (since 11.0 as {@code Funnels.stringFunnel()}. */ public static Funnel<CharSequence> unencodedCharsFunnel() { return UnencodedCharsFunnel.INSTANCE; } private enum UnencodedCharsFunnel implements Funnel<CharSequence> { INSTANCE; public void funnel(CharSequence from, PrimitiveSink into) { into.putUnencodedChars(from); } @Override public String toString() { return "Funnels.unencodedCharsFunnel()"; } } /** * Returns a funnel that encodes the characters of a {@code CharSequence} with the specified * {@code Charset}. * * @since 15.0 */ public static Funnel<CharSequence> stringFunnel(Charset charset) { return new StringCharsetFunnel(charset); } private static class StringCharsetFunnel implements Funnel<CharSequence>, Serializable { private final Charset charset; StringCharsetFunnel(Charset charset) { this.charset = Preconditions.checkNotNull(charset); } public void funnel(CharSequence from, PrimitiveSink into) { into.putString(from, charset); } @Override public String toString() { return "Funnels.stringFunnel(" + charset.name() + ")"; } @Override public boolean equals(@Nullable Object o) { if (o instanceof StringCharsetFunnel) { StringCharsetFunnel funnel = (StringCharsetFunnel) o; return this.charset.equals(funnel.charset); } return false; } @Override public int hashCode() { return StringCharsetFunnel.class.hashCode() ^ charset.hashCode(); } Object writeReplace() { return new SerializedForm(charset); } private static class SerializedForm implements Serializable { private final String charsetCanonicalName; SerializedForm(Charset charset) { this.charsetCanonicalName = charset.name(); } private Object readResolve() { return stringFunnel(Charset.forName(charsetCanonicalName)); } private static final long serialVersionUID = 0; } } /** * Returns a funnel for integers. * * @since 13.0 */ public static Funnel<Integer> integerFunnel() { return IntegerFunnel.INSTANCE; } private enum IntegerFunnel implements Funnel<Integer> { INSTANCE; public void funnel(Integer from, PrimitiveSink into) { into.putInt(from); } @Override public String toString() { return "Funnels.integerFunnel()"; } } /** * Returns a funnel that processes an {@code Iterable} by funneling its elements in iteration * order with the specified funnel. No separators are added between the elements. * * @since 15.0 */ public static <E> Funnel Other Java examples (source code examples)Here is a short list of links related to this Java Funnels.java source code file: |
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