| /* |
| * Copyright 2009 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.rpc.client.impl; |
| |
| import com.google.gwt.rpc.client.ast.CommandSink; |
| import com.google.gwt.rpc.client.ast.ReturnCommand; |
| import com.google.gwt.rpc.client.ast.RpcCommand; |
| import com.google.gwt.rpc.client.ast.ValueCommand; |
| import com.google.gwt.user.client.rpc.SerializationException; |
| import com.google.gwt.user.client.rpc.SerializationStreamWriter; |
| |
| /** |
| * Existing code assumes that a SerializationStreamWriter will export its |
| * payload via the toString() method. This uses an internal CommandSink and |
| * creates a string payload on-demand. |
| */ |
| public class CommandToStringWriter implements SerializationStreamWriter { |
| |
| private static class ToStringCommandSink extends CommandSink { |
| private final ReturnCommand retCommand = new ReturnCommand(); |
| |
| @Override |
| public void accept(RpcCommand command) throws SerializationException { |
| retCommand.addValue((ValueCommand) command); |
| } |
| |
| @Override |
| public void finish() throws SerializationException { |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| SimplePayloadSink sink = new SimplePayloadSink(sb); |
| try { |
| sink.accept(retCommand); |
| sink.finish(); |
| } catch (SerializationException e) { |
| throw new RuntimeException("Unable to create payload", e); |
| } |
| return sb.toString(); |
| } |
| } |
| |
| private final ToStringCommandSink commandSink = new ToStringCommandSink(); |
| private final SerializationStreamWriter writer; |
| |
| public CommandToStringWriter(TypeOverrides overrides) { |
| writer = ClientWriterFactory.createWriter(overrides, commandSink); |
| } |
| |
| @Override |
| public String toString() { |
| return commandSink.toString(); |
| } |
| |
| public void writeBoolean(boolean value) throws SerializationException { |
| writer.writeBoolean(value); |
| } |
| |
| public void writeByte(byte value) throws SerializationException { |
| writer.writeByte(value); |
| } |
| |
| public void writeChar(char value) throws SerializationException { |
| writer.writeChar(value); |
| } |
| |
| public void writeDouble(double value) throws SerializationException { |
| writer.writeDouble(value); |
| } |
| |
| public void writeFloat(float value) throws SerializationException { |
| writer.writeFloat(value); |
| } |
| |
| public void writeInt(int value) throws SerializationException { |
| writer.writeInt(value); |
| } |
| |
| public void writeLong(long value) throws SerializationException { |
| writer.writeLong(value); |
| } |
| |
| public void writeObject(Object value) throws SerializationException { |
| writer.writeObject(value); |
| } |
| |
| public void writeShort(short value) throws SerializationException { |
| writer.writeShort(value); |
| } |
| |
| public void writeString(String value) throws SerializationException { |
| writer.writeString(value); |
| } |
| } |