1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 package com.google.protobuf; 32 33 /** 34 * Base interface for methods common to {@link MessageLite} 35 * and {@link MessageLite.Builder} to provide type equivalency. 36 * 37 * @author jonp@google.com (Jon Perlow) 38 */ 39 public interface MessageLiteOrBuilder { 40 /** 41 * Get an instance of the type with no fields set. Because no fields are set, 42 * all getters for singular fields will return default values and repeated 43 * fields will appear empty. 44 * This may or may not be a singleton. This differs from the 45 * {@code getDefaultInstance()} method of generated message classes in that 46 * this method is an abstract method of the {@code MessageLite} interface 47 * whereas {@code getDefaultInstance()} is a static method of a specific 48 * class. They return the same thing. 49 */ getDefaultInstanceForType()50 MessageLite getDefaultInstanceForType(); 51 52 /** 53 * Returns true if all required fields in the message and all embedded 54 * messages are set, false otherwise. 55 * 56 * <p>See also: {@link MessageOrBuilder#getInitializationErrorString()} 57 */ isInitialized()58 boolean isInitialized(); 59 60 } 61