| /* |
| * 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.flink.core.fs; |
| |
| import org.apache.flink.annotation.Public; |
| import org.apache.flink.core.io.LocatableInputSplit; |
| |
| /** |
| * A file input split provides information on a particular part of a file, possibly |
| * hosted on a distributed file system and replicated among several hosts. |
| */ |
| @Public |
| public class FileInputSplit extends LocatableInputSplit { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** The path of the file this file split refers to. */ |
| private final Path file; |
| |
| /** The position of the first byte in the file to process. */ |
| private final long start; |
| |
| /** The number of bytes in the file to process. */ |
| private final long length; |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| /** |
| * Constructs a split with host information. |
| * |
| * @param num |
| * the number of this input split |
| * @param file |
| * the file name |
| * @param start |
| * the position of the first byte in the file to process |
| * @param length |
| * the number of bytes in the file to process (-1 is flag for "read whole file") |
| * @param hosts |
| * the list of hosts containing the block, possibly <code>null</code> |
| */ |
| public FileInputSplit(int num, Path file, long start, long length, String[] hosts) { |
| super(num, hosts); |
| |
| this.file = file; |
| this.start = start; |
| this.length = length; |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| /** |
| * Returns the path of the file containing this split's data. |
| * |
| * @return the path of the file containing this split's data. |
| */ |
| public Path getPath() { |
| return file; |
| } |
| |
| /** |
| * Returns the position of the first byte in the file to process. |
| * |
| * @return the position of the first byte in the file to process |
| */ |
| public long getStart() { |
| return start; |
| } |
| |
| /** |
| * Returns the number of bytes in the file to process. |
| * |
| * @return the number of bytes in the file to process |
| */ |
| public long getLength() { |
| return length; |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| @Override |
| public int hashCode() { |
| return getSplitNumber() ^ (file == null ? 0 : file.hashCode()); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| else if (obj instanceof FileInputSplit && super.equals(obj)) { |
| FileInputSplit other = (FileInputSplit) obj; |
| |
| return this.start == other.start && |
| this.length == other.length && |
| (this.file == null ? other.file == null : (other.file != null && this.file.equals(other.file))); |
| } |
| else { |
| return false; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "[" + getSplitNumber() + "] " + file + ":" + start + "+" + length; |
| } |
| } |