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  * Copyright 2014-2015 Amazon Technologies, 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:
 * 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.
A legacy marshaller that marshals Java Booleans into DynamoDB Numbers, representing true as '1' and false as '0'. Retained for backwards compatibility with older versions of the mapper which don't know about the DynamoDB BOOL type.
    private static final BooleanToNumberMarshaller INSTANCE =
            new BooleanToNumberMarshaller();
    public static BooleanToNumberMarshaller instance() {
        return ;
    private BooleanToNumberMarshaller() {
    public AttributeValue marshall(Object obj) {
        Boolean bool = (Booleanobj;
        if (bool == null || bool == false) {
            return new AttributeValue().withN("0");
        } else {
            return new AttributeValue().withN("1");
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