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 /** Enum that identifies the Java types required to store protobuf fields. */ 34 @ExperimentalApi 35 public enum JavaType { 36 VOID(Void.class, Void.class, null), 37 INT(int.class, Integer.class, 0), 38 LONG(long.class, Long.class, 0L), 39 FLOAT(float.class, Float.class, 0F), 40 DOUBLE(double.class, Double.class, 0D), 41 BOOLEAN(boolean.class, Boolean.class, false), 42 STRING(String.class, String.class, ""), 43 BYTE_STRING(ByteString.class, ByteString.class, ByteString.EMPTY), 44 ENUM(int.class, Integer.class, null), 45 MESSAGE(Object.class, Object.class, null); 46 47 private final Class<?> type; 48 private final Class<?> boxedType; 49 private final Object defaultDefault; 50 JavaType(Class<?> type, Class<?> boxedType, Object defaultDefault)51 JavaType(Class<?> type, Class<?> boxedType, Object defaultDefault) { 52 this.type = type; 53 this.boxedType = boxedType; 54 this.defaultDefault = defaultDefault; 55 } 56 57 /** The default default value for fields of this type, if it's a primitive type. */ getDefaultDefault()58 public Object getDefaultDefault() { 59 return defaultDefault; 60 } 61 62 /** Gets the required type for a field that would hold a value of this type. */ getType()63 public Class<?> getType() { 64 return type; 65 } 66 67 /** @return the boxedType */ getBoxedType()68 public Class<?> getBoxedType() { 69 return boxedType; 70 } 71 72 /** Indicates whether or not this {@link JavaType} can be applied to a field of the given type. */ isValidType(Class<?> t)73 public boolean isValidType(Class<?> t) { 74 return type.isAssignableFrom(t); 75 } 76 } 77