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The AWS Android SDK for Amazon DynamoDB Mapper module holds the client classes that are used for communicating with Amazon DynamoDB Service

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/*
 * 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.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMappingException;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;

import java.lang.reflect.Method;

abstract class MUnmarshaller implements ArgumentUnmarshaller {

    @Override
    public void typeCheck(AttributeValue value, Method setter) {
        if (value.getM() == null) {
            throw new DynamoDBMappingException("Expected M in value " + value + " when invoking "
                    + setter);
        }
    }

}