1 /* 2 * Copyright (c) 2008-2009, Motorola, Inc. 3 * 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * - Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * - Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * - Neither the name of the Motorola, Inc. nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 package com.android.obex; 34 35 import java.io.IOException; 36 37 /** 38 * This interface defines the methods needed by a parent that uses the 39 * PrivateInputStream and PrivateOutputStream objects defined in this package. 40 */ 41 public interface BaseStream { 42 43 /** 44 * Verifies that this object is still open. 45 * @throws IOException if the object is closed 46 */ ensureOpen()47 void ensureOpen() throws IOException; 48 49 /** 50 * Verifies that additional information may be sent. In other words, the 51 * operation is not done. 52 * @throws IOException if the operation is completed 53 */ ensureNotDone()54 void ensureNotDone() throws IOException; 55 56 /** 57 * Continues the operation since there is no data to read. 58 * @param sendEmpty <code>true</code> if the operation should send an empty 59 * packet or not send anything if there is no data to send 60 * @param inStream <code>true</code> if the stream is input stream or is 61 * output stream 62 * @return <code>true</code> if the operation was completed; 63 * <code>false</code> if no operation took place 64 * @throws IOException if an IO error occurs 65 */ continueOperation(boolean sendEmpty, boolean inStream)66 boolean continueOperation(boolean sendEmpty, boolean inStream) throws IOException; 67 68 /** 69 * Called when the output or input stream is closed. 70 * @param inStream <code>true</code> if the input stream is closed; 71 * <code>false</code> if the output stream is closed 72 * @throws IOException if an IO error occurs 73 */ streamClosed(boolean inStream)74 void streamClosed(boolean inStream) throws IOException; 75 } 76