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DynamoDB Cookbook

You're reading from   DynamoDB Cookbook Over 90 hands-on recipes to design Internet scalable web and mobile applications with Amazon DynamoDB

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Product type Paperback
Published in Sep 2015
Publisher
ISBN-13 9781784393755
Length 266 pages
Edition 1st Edition
Concepts
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Author (1):
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Tanmay Deshpande Tanmay Deshpande
Author Profile Icon Tanmay Deshpande
Tanmay Deshpande
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Table of Contents (12) Chapters Close

Preface 1. Taking Your First Steps with DynamoDB FREE CHAPTER 2. Operating with DynamoDB Tables 3. Manipulating DynamoDB Items 4. Managing DynamoDB Indexes 5. Exploring Higher Level Programming Interfaces for DynamoDB 6. Securing DynamoDB 7. DynamoDB Best Practices 8. Integrating DynamoDB with other AWS Services 9. Developing Web Applications using DynamoDB 10. Developing Mobile Applications using DynamoDB Index

Scanning items from the DynamoDB table using the object persistence model in Java


Now, we are going to see how to scan items from the table using the object persistence model.

Getting ready

To perform this recipe, you should have set up the project, as described in the earlier recipes, specifically, pom.xml, dependencies, and the object model.

How to do it…

Let's scan items from the table using the object persistence model:

  1. Create an instance of the DynamoDB client class and initiate it with the credential's profile. You can also set the region if you have created the table in a specific region:

    AmazonDynamoDBClient client = new AmazonDynamoDBClient(
        new ProfileCredentialsProvider());
      client.setRegion(Region.getRegion(Regions.US_EAST_1));
  2. Create an instance of the DynamoDBMapper class and initiate it with the client that we created earlier:

    DynamoDBMapper mapper = new DynamoDBMapper(client);
  3. Scanning allows us to put filter conditions. Here, suppose that we want to get all the items whose type...

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