001 /** 002 * Copyright (C) 20010, Progress Software Corporation and/or its 003 * subsidiaries or affiliates. All rights reserved. 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.fusesource.hawtbuf.proto; 018 019 import org.fusesource.hawtbuf.codec.VariableCodec; 020 021 import java.io.*; 022 023 /** 024 * <p> 025 * Implements the Codec interface for PBMessages type which 026 * encode/decodes framed messages. 027 * </p> 028 * 029 * @author <a href="http://hiramchirino.com">Hiram Chirino</a> 030 */ 031 public class PBMessageFramedCodec<T extends MessageBuffer> extends VariableCodec<T> { 032 033 final private PBMessageFactory<?, ? extends T> factory; 034 035 public PBMessageFramedCodec(PBMessageFactory<?, ? extends T> factory) { 036 this.factory = factory; 037 } 038 039 public T decode(DataInput dataIn) throws IOException { 040 return (T)factory.parseFramed((InputStream) dataIn); 041 } 042 043 public void encode(T value, DataOutput dataOut) throws IOException { 044 value.writeFramed((OutputStream) dataOut); 045 } 046 047 @Override 048 public boolean isEstimatedSizeSupported() { 049 return true; 050 } 051 052 public int estimatedSize(T value) { 053 return value.serializedSizeFramed(); 054 } 055 056 @Override 057 public boolean isDeepCopySupported() { 058 return true; 059 } 060 061 @Override 062 public T deepCopy(T value) { 063 return (T) value; 064 } 065 }