Build a PostgreSQL Interface for Suadeo Data using the CData JDBC Driver

There are a vast number of PostgreSQL clients available on the Internet. From standard Drivers to BI and Analytics tools, PostgreSQL is a popular interface for data access. Using our JDBC Drivers, you can now create PostgreSQL entry-points that you can connect to from any standard client.

To access Suadeo data as a PostgreSQL database, use the CData JDBC Driver for Suadeo and a JDBC foreign data wrapper (FDW). In this article, we compile the FDW, install it, and query Suadeo data from PostgreSQL Server.

Connect to Suadeo Data as a JDBC Data Source

To connect to Suadeo as a JDBC data source, you will need the following:

• Driver JAR path: The JAR is located in the lib subfolder of the installation directory.

• Driver class:

  cdata.jdbc.suadeo.SuadeoDriver
  

• JDBC URL: The URL must start with "jdbc:suadeo:" and can include any of the connection properties in name-value pairs separated with semicolons.

  The driver uses the OAuth 2.0 Resource Owner Password Credentials (ROPC) grant to authenticate to Suadeo. Authentication occurs directly using your credentials; there is no browser-based authorization flow or refresh token.

  Set the following connection properties:

  • URL: The base URL of your Suadeo instance.
  • User: Your Suadeo username.
  • Password: Your Suadeo password.
  • AuthenticationName: The name identifier for the authentication configuration in your Suadeo instance. Different authentication names can be configured for different environments or use cases.

  When you connect, the driver sends your credentials to the Suadeo OAuth token endpoint, receives an access token, and uses it for all subsequent requests. A new access token is obtained automatically when needed during the session.

  Built-in Connection String Designer

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

  java -jar cdata.jdbc.suadeo.jar
  

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

  

  A typical JDBC URL is below:

  jdbc:suadeo:URL=https://mysuadeoinstance;User=username;Password=password;AuthenticationName=your_auth_name;
  

Build the JDBC Foreign Data Wrapper

The Foreign Data Wrapper can be installed as an extension to PostgreSQL, without recompiling PostgreSQL. The jdbc2_fdw extension is used as an example (downloadable here).

1. Add a symlink from the shared object for your version of the JRE to /usr/lib/libjvm.so. For example:

   ln -s /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server/libjvm.so /usr/lib/libjvm.so
   

2. Start the build:

   make install USE_PGXS=1
   

Query Suadeo Data as a PostgreSQL Database

After you have installed the extension, follow the steps below to start executing queries to Suadeo data:

1. Log into your database.
2. Load the extension for the database:

   CREATE EXTENSION jdbc2_fdw;
   

3. Create a server object for Suadeo:

   CREATE SERVER Suadeo 
   FOREIGN DATA WRAPPER jdbc2_fdw OPTIONS (
   drivername 'cdata.jdbc.suadeo.SuadeoDriver',
   url 'jdbc:suadeo:URL=https://mysuadeoinstance;User=username;Password=password;AuthenticationName=your_auth_name;',
   querytimeout '15',
   jarfile '/home/MyUser/CData/CData\ JDBC\ Driver\ for\ Salesforce MyDriverEdition/lib/cdata.jdbc.suadeo.jar'); 
   

4. Create a user mapping for the username and password of a user known to the MySQL daemon.

   CREATE USER MAPPING for postgres SERVER Suadeo OPTIONS (
   username 'admin', 
   password 'test');
   

5. Create a foreign table in your local database:

   postgres=# CREATE FOREIGN TABLE customers (
   customers_id text,
   customers_Id text,
   customers_Name numeric) 
   SERVER Suadeo OPTIONS (
   table_name 'customers');
   

postgres=# SELECT * FROM customers;