Java tutorial
/* * 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.bookkeeper.proto.checksum; import io.netty.buffer.ByteBuf; import java.util.zip.CRC32; import org.apache.bookkeeper.proto.checksum.CRC32DigestManager.CRC32Digest; /** * Regular implementation of CRC32 digest that makes use of {@link CRC32} class. */ class StandardCRC32Digest implements CRC32Digest { private final CRC32 crc = new CRC32(); @Override public long getValueAndReset() { long value = crc.getValue(); crc.reset(); return value; } @Override public void update(ByteBuf buf) { crc.update(buf.nioBuffer()); } }