/*
* 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.marshallers;
import com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.ArgumentMarshaller.NumberAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
/**
* A legacy marshaller that marshals Java {@code Booleans} into DynamoDB
* Numbers, representing {@code true} as '1' and {@code false} as '0'. Retained
* for backwards compatibility with older versions of the mapper which don't
* know about the DynamoDB BOOL type.
*/
public class BooleanToNumberMarshaller implements NumberAttributeMarshaller {
private static final BooleanToNumberMarshaller INSTANCE =
new BooleanToNumberMarshaller();
public static BooleanToNumberMarshaller instance() {
return INSTANCE;
}
private BooleanToNumberMarshaller() {
}
@Override
public AttributeValue marshall(Object obj) {
Boolean bool = (Boolean) obj;
if (bool == null || bool == false) {
return new AttributeValue().withN("0");
} else {
return new AttributeValue().withN("1");
}
}
}