001 /* 002 * Copyright (C) 2007 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017 package com.google.common.io; 018 019 import java.io.IOException; 020 021 /** 022 * A factory for readable streams of bytes or characters. 023 * 024 * @author Chris Nokleberg 025 * @since 1 026 */ 027 public interface InputSupplier<T> { 028 029 /** 030 * Returns an object that encapsulates a readable resource. 031 * <p> 032 * Like {@link Iterable#iterator}, this method may be called repeatedly to 033 * get independent channels to the same underlying resource. 034 * <p> 035 * Where the channel maintains a position within the resource, moving that 036 * cursor within one channel should not affect the starting position of 037 * channels returned by other calls. 038 */ 039 T getInput() throws IOException; 040 }