com.getperka.flatpack.codexes.VoidCodex Maven / Gradle / Ivy
/*
* #%L
* FlatPack serialization code
* %%
* Copyright (C) 2012 Perka 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.
* #L%
*/
package com.getperka.flatpack.codexes;
import com.getperka.flatpack.ext.DeserializationContext;
import com.getperka.flatpack.ext.JsonKind;
import com.getperka.flatpack.ext.SerializationContext;
import com.getperka.flatpack.ext.Type;
import com.google.gson.JsonElement;
/**
* Ignores all values.
*/
public class VoidCodex extends ValueCodex {
protected VoidCodex() {}
@Override
public Type describe() {
return new Type.Builder().withJsonKind(JsonKind.NULL).build();
}
/**
* The only valid value is {@code null}, which is the default value.
*/
@Override
public boolean isDefaultValue(Void value) {
return true;
}
@Override
public Void readNotNull(JsonElement element, DeserializationContext context) throws Exception {
return null;
}
@Override
public void writeNotNull(Void object, SerializationContext context) throws Exception {
context.getWriter().nullValue();
}
}