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1 //
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2 // MessagePack for Java
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3 //
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4 // Copyright (C) 2009 - 2013 FURUHASHI Sadayuki
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5 //
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6 // Licensed under the Apache License, Version 2.0 (the "License");
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7 // you may not use this file except in compliance with the License.
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8 // You may obtain a copy of the License at
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9 //
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10 // http://www.apache.org/licenses/LICENSE-2.0
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11 //
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12 // Unless required by applicable law or agreed to in writing, software
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13 // distributed under the License is distributed on an "AS IS" BASIS,
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14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 // See the License for the specific language governing permissions and
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16 // limitations under the License.
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17 //
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18 package org.msgpack.template;
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19
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20 import java.io.IOException;
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21 import org.msgpack.packer.Packer;
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22 import org.msgpack.unpacker.Unpacker;
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23 import org.msgpack.MessageTypeException;
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24 import org.msgpack.type.Value;
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25
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26 public class ValueTemplate extends AbstractTemplate<Value> {
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27 private ValueTemplate() {
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28 }
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29
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30 public void write(Packer pk, Value target, boolean required)
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31 throws IOException {
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32 if (target == null) {
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33 if (required) {
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34 throw new MessageTypeException("Attempted to write null");
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35 }
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36 pk.writeNil();
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37 return;
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38 }
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39 target.writeTo(pk);
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40 }
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41
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42 public Value read(Unpacker u, Value to, boolean required)
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43 throws IOException {
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44 if (!required && u.trySkipNil()) {
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45 return null;
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46 }
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47 return u.readValue();
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48 }
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49
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50 static public ValueTemplate getInstance() {
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51 return instance;
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52 }
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53
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54 static final ValueTemplate instance = new ValueTemplate();
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55 }
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