/*
* 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.services.dynamodbv2.model.AttributeValue;
import java.util.HashSet;
import java.util.Set;
/**
* An unmarshaller that unmarshals DynamoDB NumberSets into sets of Java
* {@code Integer}s.
*/
public class IntegerSetUnmarshaller extends NSUnmarshaller {
private static final IntegerSetUnmarshaller INSTANCE =
new IntegerSetUnmarshaller();
public static IntegerSetUnmarshaller instance() {
return INSTANCE;
}
private IntegerSetUnmarshaller() {
}
@Override
public Object unmarshall(AttributeValue value) {
Set<Integer> result = new HashSet<Integer>();
for (String s : value.getNS()) {
result.add(Integer.valueOf(s));
}
return result;
}
}