com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ObjectUnmarshaller Maven / Gradle / Ivy
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The AWS Java SDK for Amazon DynamoDB module holds the client classes that are used for communicating with Amazon DynamoDB Service
/*
* Copyright 2014-2023 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.services.dynamodbv2.datamodeling.unmarshallers;
import java.text.ParseException;
import java.util.Map;
import com.amazonaws.services.dynamodbv2.datamodeling.ItemConverter;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
public class ObjectUnmarshaller extends MUnmarshaller {
private static final ObjectUnmarshaller INSTANCE = new ObjectUnmarshaller();
public static ObjectUnmarshaller instance() {
return INSTANCE;
}
private final ItemConverter converter;
private final Class clazz;
private ObjectUnmarshaller() {
converter = null;
clazz = null;
}
public ObjectUnmarshaller(ItemConverter converter, Class clazz) {
if (converter == null) {
throw new NullPointerException("converter");
}
if (clazz == null) {
throw new NullPointerException("clazz");
}
this.converter = converter;
this.clazz = clazz;
}
@Override
public Object unmarshall(AttributeValue value) throws ParseException {
Map map = value.getM();
return converter.unconvert(clazz, map);
}
}