A PostgreSQL Interface for Twitter Ads Data

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

Connect to Twitter Ads Data as a JDBC Data Source

To connect to Twitter Ads 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.twitterads.TwitterAdsDriver

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

  All tables require authentication. You must use OAuth to authenticate with Twitter. OAuth requires the authenticating user to interact with Twitter using the browser. For more information, refer to the OAuth section in the Help documentation.

  Built-in Connection String Designer

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

  java -jar cdata.jdbc.twitterads.jar

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

  A typical JDBC URL is below:

  jdbc:twitterads:InitiateOAuth=GETANDREFRESH

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 Twitter Ads Data as a PostgreSQL Database

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

1. Log into your database.
2. Load the extension for the database: CREATE EXTENSION jdbc2_fdw;
3. Create a server object for Twitter Ads: CREATE SERVER TwitterAds FOREIGN DATA WRAPPER jdbc2_fdw OPTIONS ( drivername 'cdata.jdbc.twitterads.TwitterAdsDriver', url 'jdbc:twitterads:InitiateOAuth=GETANDREFRESH', querytimeout '15', jarfile '/home/MyUser/CData/CData\ JDBC\ Driver\ for\ Salesforce MyDriverEdition/lib/cdata.jdbc.twitterads.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 TwitterAds OPTIONS ( username 'admin', password 'test');
5. Create a foreign table in your local database: postgres=# CREATE FOREIGN TABLE adstats ( adstats_id text, adstats_EntityId text, adstats_Entity numeric) SERVER TwitterAds OPTIONS ( table_name 'adstats');