com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteArraySetUnmarshaller Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of aws-java-sdk-osgi Show documentation

The AWS SDK for Java with support for OSGi. The AWS SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

There is a newer version: 1.11.60

Show newest version

/*
 * 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.services.dynamodbv2.datamodeling.unmarshallers;

import java.nio.ByteBuffer;
import java.util.HashSet;
import java.util.Set;

import com.amazonaws.services.dynamodbv2.model.AttributeValue;

/**
 * An unmarshaller that unmarshals BinarySet values as sets of Java
 * {@code byte[]}s.
 */
public class ByteArraySetUnmarshaller extends BSUnmarshaller {

    private static final ByteArraySetUnmarshaller INSTANCE =
            new ByteArraySetUnmarshaller();

    public static ByteArraySetUnmarshaller instance() {
        return INSTANCE;
    }

    private ByteArraySetUnmarshaller() {
    }

    @Override
    public Object unmarshall(AttributeValue value) {
        Set result = new HashSet();

        for (ByteBuffer buffer : value.getBS()) {
            if (buffer.hasArray()) {
                result.add(buffer.array());
            } else {
                byte[] array = new byte[buffer.remaining()];
                buffer.get(array);
                result.add(array);
            }
        }

        return result;
    }
}