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Rapidly create and deploy powerful Java applications that integrate with Amazon Marketplace data including InventoryItems, Orders, Products, and more!

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Create a Data Access Object for Amazon Marketplace Data using JDBI


A brief overview of creating a SQL Object API for Amazon Marketplace data in JDBI.

JDBI is a SQL convenience library for Java that exposes two different style APIs, a fluent style and a SQL object style. The CData JDBC Driver for Amazon Marketplace integrates connectivity to live Amazon Marketplace data in Java applications. By pairing these technologies, you gain simple, programmatic access to Amazon Marketplace data. This article walks through building a basic Data Access Object (DAO) and the accompanying code to read Amazon Marketplace data.

Create a DAO for the Amazon Marketplace Orders Entity

The interface below declares the desired behavior for the SQL object to create a single method for each SQL statement to be implemented.

public interface MyOrdersDAO { //request specific data from Amazon Marketplace (String type is used for simplicity) @SqlQuery("SELECT OrderStatus FROM Orders WHERE IsReplacementOrder = :isReplacementOrder") String findOrderStatusByIsReplacementOrder(@Bind("isReplacementOrder") String isReplacementOrder); /* * close with no args is used to close the connection */ void close(); }

Open a Connection to Amazon Marketplace

Collect the necessary connection properties and construct the appropriate JDBC URL for connecting to Amazon Marketplace.

To connect to the Amazon Marketplace Webservice (MWS), AWSAccessKeyId, MWSAuthToken, AWSSecretKey and SellerId are required. You can optionally set the Marketplace property. For more information on obtaining values for these properties, refer to the Help documentation.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the Amazon Marketplace JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

java -jar cdata.jdbc.amazonmarketplace.jar

Fill in the connection properties and copy the connection string to the clipboard.

A connection string for Amazon Marketplace will typically look like the following:

jdbc:amazonmarketplace:AWS Access Key Id=myAWSAccessKeyId;AWS Secret Key=myAWSSecretKey;MWS Auth Token=myMWSAuthToken;Seller Id=mySellerId;Marketplace=United States;

Use the configured JDBC URL to obtain an instance of the DAO interface. The particular method shown below will open a handle bound to the instance, so the instance needs to be closed explicitly to release the handle and the bound JDBC connection.

DBI dbi = new DBI("jdbc:amazonmarketplace:AWS Access Key Id=myAWSAccessKeyId;AWS Secret Key=myAWSSecretKey;MWS Auth Token=myMWSAuthToken;Seller Id=mySellerId;Marketplace=United States;"); MyOrdersDAO dao = dbi.open(MyOrdersDAO.class); //do stuff with the DAO dao.close();

Read Amazon Marketplace Data

With the connection open to Amazon Marketplace, simply call the previously defined method to retrieve data from the Orders entity in Amazon Marketplace.

//disply the result of our 'find' method String orderStatus = dao.findOrderStatusByIsReplacementOrder("True"); System.out.println(orderStatus);

Since the JDBI library is able to work with JDBC connections, you can easily produce a SQL Object API for Amazon Marketplace by integrating with the CData JDBC Driver for Amazon Marketplace. Download a free trial and work with live Amazon Marketplace data in custom Java applications today.