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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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Toc

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

Implementing view contacts services

In this recipe, we are going to see how to implement view contacts services for our Android app.

Getting ready…

To get started with this recipe, you should have performed the earlier recipes.

How to do it…

Let's implement view contacts services:

  1. To fetch the contacts saved by a particular user, we will use the same AppContact model that we used in the earlier recipe.
  2. Next, we need to write a method that fetches all the contacts saved with a certain e-mail ID:
    public static List<AppContact> getAllContacts(String email) {
    AmazonDynamoDBClient ddb = ContactListActivity.clientManager.ddb();
        DynamoDBMapper mapper = new DynamoDBMapper(ddb);
        List<AppContact> contactList = new ArrayList<AppContact>();
        try {
          Log.d(TAG, "Fetching contacts");
        // Condition to get records for given userEmailId
          Condition condition = new Condition().withComparisonOperator(
              ComparisonOperator.EQ.toString()...
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