com.getperka.flatpack.codexes.BooleanCodex 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 java.io.IOException;
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;
/**
* Support for boolean values.
*/
public class BooleanCodex extends ValueCodex {
protected BooleanCodex() {}
@Override
public Type describe() {
return new Type.Builder().withJsonKind(JsonKind.BOOLEAN).build();
}
/**
* Returns {@code true} for {@code null} or {@link Boolean#FALSE} values.
*/
@Override
public boolean isDefaultValue(Boolean value) {
return value == null || Boolean.FALSE.equals(value);
}
@Override
public Boolean readNotNull(JsonElement element, DeserializationContext context) {
return element.getAsJsonPrimitive().isNumber() ? element.getAsNumber().intValue() != 0
: element.getAsBoolean();
}
@Override
public void writeNotNull(Boolean object, SerializationContext context) throws IOException {
context.getWriter().value(object);
}
}