hy00nc commented on a change in pull request #222: [NEMO-350] Implement Off-heap SerializedMemoryStore & [NEMO-384] Implement DirectByteBufferInputStream for Off-heap SerializedMemoryStore URL: https://github.com/apache/incubator-nemo/pull/222#discussion_r296080772
########## File path: common/src/main/java/org/apache/nemo/common/DirectByteBufferInputStream.java ########## @@ -0,0 +1,71 @@ +/* + * 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.nemo.common; + +import java.io.EOFException; +import java.io.IOException; +import java.io.InputStream; +import java.nio.ByteBuffer; +import java.util.List; + +/** + * This class is a customized input stream implementation which reads data from + * list of {@link ByteBuffer}. + */ +public class DirectByteBufferInputStream extends InputStream { + private List<ByteBuffer> bufList; + private int current = 0; + + /** + * Default Constructor. + * + * @param bufList is the target data to read. + */ + public DirectByteBufferInputStream(final List<ByteBuffer> bufList) { + this.bufList = bufList; + } + + /** + * Reads data from the list of {@code ByteBuffer}s. + * + * @return integer. + * @throws IOException + */ + @Override + public int read() throws IOException { + return getBuffer().get() & 0xff; Review comment: You can probably refer to this website: https://rules.sonarsource.com/java/RSPEC-3034 . As far as I know, this is a java-specific issue. Since the raw byte value in java represents signed value, it should be masked to get the proper value. I will mention this in the comment thanks :) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
