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
017package com.google.common.io;
018
019import java.io.IOException;
020
021/**
022 * A factory for writable streams of bytes or characters.
023 *
024 * @author Chris Nokleberg
025 * @since 1.0
026 */
027public interface OutputSupplier<T> {
028
029  /**
030   * Returns an object that encapsulates a writable 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 getOutput() throws IOException;
040}