Serverless Programming Cookbook

How to do it...

Let's discuss the steps to read data from Lambda without repeating the common steps we already discussed:

1. Create a Maven project for the Lambda with the common parent and the DynamoDB Java SDK dependency.
2. Define the Request and Response domain objects.

The Request object for the lambda-dynamodb-read-item lambda is defined as follows:

@Datapublic class Request {    private String tableName;    private String partitionKey;    private String sortKey;    private String partitionKeyValue;    private String sortKeyValue; // Will be stored integer.    private boolean waitForActive;    private Map<String, String> filterData;}

The filterData map will contain the attributes to create filter expressions and their corresponding values. The Response object ...