Mercurial > hg > Members > sugi > MessagePack-java
view src/main/java/org/msgpack/type/NilValue.java @ 0:cb825acd883a
first commit
author | sugi |
---|---|
date | Sat, 18 Oct 2014 15:06:15 +0900 |
parents | |
children |
line wrap: on
line source
// // MessagePack for Java // // Copyright (C) 2009 - 2013 FURUHASHI Sadayuki // // 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 org.msgpack.type; import java.io.IOException; import org.msgpack.packer.Packer; public class NilValue extends AbstractValue { private NilValue() { } private static NilValue instance = new NilValue(); static NilValue getInstance() { return instance; } @Override public ValueType getType() { return ValueType.NIL; } @Override public boolean isNilValue() { return true; } @Override public NilValue asNilValue() { return this; } @Override public String toString() { return "null"; } @Override public StringBuilder toString(StringBuilder sb) { return sb.append("null"); } @Override public void writeTo(Packer pk) throws IOException { pk.writeNil(); } @Override public boolean equals(Object o) { if (o == this) { return true; } if (!(o instanceof Value)) { return false; } return ((Value) o).isNilValue(); } @Override public int hashCode() { return 0; } }