/*
* Copyright 2014-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* 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://aws.amazon.com/apache2.0
*
* This file 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.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.unmarshallers;
import com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.ArgumentUnmarshaller;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import java.lang.reflect.Method;
import java.text.ParseException;
public class NullableUnmarshaller implements ArgumentUnmarshaller {
private final ArgumentUnmarshaller wrapped;
public NullableUnmarshaller(ArgumentUnmarshaller wrapped) {
if (wrapped == null) {
throw new NullPointerException("wrapped");
}
this.wrapped = wrapped;
}
@Override
public void typeCheck(AttributeValue value, Method setter) {
if (value.isNULL() == null) {
wrapped.typeCheck(value, setter);
}
}
@Override
public Object unmarshall(AttributeValue value) throws ParseException {
if (value.isNULL() != null) {
return null;
}
return wrapped.unmarshall(value);
}
}