1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.giraph.utils; 19 20 import java.io.DataInput; 21 22 /** 23 * Add some functionality to data input 24 */ 25 public interface ExtendedDataInput extends DataInput { 26 /** 27 * Get the position of what has been read 28 * 29 * @return How many bytes have been read? 30 */ 31 int getPos(); 32 33 /** 34 * How many bytes are available? 35 * 36 * @return Bytes available 37 */ 38 int available(); 39 40 /** 41 * Check if we read everything from the input 42 * 43 * @return True iff we read everything from the input 44 */ 45 boolean endOfInput(); 46 }