A PostgreSQL Interface for JDBC-ODBC Bridge Data



Use the Remoting features of the JDBC-ODBC Bridge JDBC Driver to create a PostgreSQL entry-point for data access.

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

Connect to JDBC-ODBC Bridge Data as a JDBC Data Source

To connect to JDBC-ODBC Bridge 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.jdbcodbc.JDBCODBCDriver

  • JDBC URL: The URL must start with "jdbc:jdbcodbc:" and can include any of the connection properties in name-value pairs separated with semicolons. To connect to an ODBC data source, specify either the DSN (data source name) or specify an ODBC connection string: Set Driver and the connection properties for your ODBC driver.

    Built-in Connection String Designer

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

    java -jar cdata.jdbc.jdbcodbc.jar

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

    A typical JDBC URL is below:

    jdbc:jdbcodbc:Driver={ODBC_Driver_Name};Driver_Property1=Driver_Value1;Driver_Property2=Driver_Value2;...

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 JDBC-ODBC Bridge Data as a PostgreSQL Database

After you have installed the extension, follow the steps below to start executing queries to JDBC-ODBC Bridge data:

  1. Log into your database.
  2. Load the extension for the database: CREATE EXTENSION jdbc2_fdw;
  3. Create a server object for JDBC-ODBC Bridge: CREATE SERVER JDBCODBC FOREIGN DATA WRAPPER jdbc2_fdw OPTIONS ( drivername 'cdata.jdbc.jdbcodbc.JDBCODBCDriver', url 'jdbc:jdbcodbc:Driver={ODBC_Driver_Name};Driver_Property1=Driver_Value1;Driver_Property2=Driver_Value2;...', querytimeout '15', jarfile '/home/MyUser/CData/CData\ JDBC\ Driver\ for\ Salesforce MyDriverEdition/lib/cdata.jdbc.jdbcodbc.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 JDBCODBC OPTIONS ( username 'admin', password 'test');
  5. Create a foreign table in your local database: postgres=# CREATE FOREIGN TABLE account ( account_id text, account_Id text, account_Name numeric) SERVER JDBCODBC OPTIONS ( table_name 'account');
You can now execute read/write commands to JDBC-ODBC Bridge: postgres=# SELECT * FROM account;

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ODBC Connectivity from Java Icon JDBC-ODBC Bridge Driver

The JDBC-ODBC Bridge provides JDBC access from any Java App to ODBC data sources on Windows, Linux and Mac. Whether your organization uses Java-based tools for reporting and analytics, or builds custom Java solutions, the CData JDBC-ODBC Bridge provides an easy way to connect with any ODBC data source.