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Create a Data Access Object for Wave Financial Data using JDBI


A brief overview of creating a SQL Object API for Wave Financial 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 Wave Financial integrates connectivity to live Wave Financial data in Java applications. By pairing these technologies, you gain simple, programmatic access to Wave Financial data. This article walks through building a basic Data Access Object (DAO) and the accompanying code to read and write Wave Financial data.

Create a DAO for the Wave Financial Invoices 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 MyInvoicesDAO { //insert new data into Wave Financial @SqlUpdate("INSERT INTO Invoices (Status, DueDate) values (:status, :dueDate)") void insert(@Bind("status") String status, @Bind("dueDate") String dueDate); //request specific data from Wave Financial (String type is used for simplicity) @SqlQuery("SELECT DueDate FROM Invoices WHERE Status = :status") String findDueDateByStatus(@Bind("status") String status); /* * close with no args is used to close the connection */ void close(); }

Open a Connection to Wave Financial

Collect the necessary connection properties and construct the appropriate JDBC URL for connecting to Wave Financial.

Connect using the API Token

You can connect to Wave Financial by specifying the APIToken You can obtain an API Token using the following steps:

  1. Log in to your Wave account and navigate to "Manage Applications" in the left pane.
  2. Select the application that you would like to create a token for. You may need to create an application first.
  3. Click the "Create token" button to generate an APIToken.

Connect using OAuth

If you wish, you can connect using the embedded OAuth credentials. See the Help documentation for more information.

Built-in Connection String Designer

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

java -jar cdata.jdbc.wavefinancial.jar

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

A connection string for Wave Financial will typically look like the following:

jdbc:wavefinancial:InitiateOAuth=GETANDREFRESH

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:wavefinancial:InitiateOAuth=GETANDREFRESH"); MyInvoicesDAO dao = dbi.open(MyInvoicesDAO.class); //do stuff with the DAO dao.close();

Read Wave Financial Data

With the connection open to Wave Financial, simply call the previously defined method to retrieve data from the Invoices entity in Wave Financial.

//disply the result of our 'find' method String dueDate = dao.findDueDateByStatus("SENT"); System.out.println(dueDate);

Write Wave Financial Data

It is also simple to write data to Wave Financial, using the previously defined method.

//add a new entry to the Invoices entity dao.insert(newStatus, newDueDate);

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