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 final class ExtensionSchemas { 34 private static final ExtensionSchema<?> LITE_SCHEMA = new ExtensionSchemaLite(); 35 private static final ExtensionSchema<?> FULL_SCHEMA = loadSchemaForFullRuntime(); 36 loadSchemaForFullRuntime()37 private static ExtensionSchema<?> loadSchemaForFullRuntime() { 38 try { 39 Class<?> clazz = Class.forName("com.google.protobuf.ExtensionSchemaFull"); 40 return (ExtensionSchema) clazz.getDeclaredConstructor().newInstance(); 41 } catch (Exception e) { 42 return null; 43 } 44 } 45 lite()46 static ExtensionSchema<?> lite() { 47 return LITE_SCHEMA; 48 } 49 full()50 static ExtensionSchema<?> full() { 51 if (FULL_SCHEMA == null) { 52 throw new IllegalStateException("Protobuf runtime is not correctly loaded."); 53 } 54 return FULL_SCHEMA; 55 } 56 } 57