The pgjdbc-ng driver is a powerful tool for connecting to PostgreSQL databases using JDBC. If you’re looking to integrate PostgreSQL into your Java applications, you’ve come to the right place! This article will guide you through the steps to set up, build, and test the pgjdbc-ng driver, ensuring a smooth integration experience.

Getting Started

The first step towards building the pgjdbc-ng driver is to ensure that you have all the necessary dependencies and tools in place.

Dependencies

To get started, you’ll need the following dependencies based on the build system you’re using:

• Gradle: Include this line in your build.gradle file:

compile com.impossibl.pgjdbc-ng:pgjdbc-ng:LATEST

• Maven: Add the following snippet to your pom.xml file:

    com.impossibl.pgjdbc-ng
    pgjdbc-ng
    LATEST

Building the Driver

To build the pgjdbc-ng driver, you’ll use Gradle. Execute the following command:

.gradlew clean build

This command will compile the driver and run the tests. After a successful build, you will find two JAR files in the driver/build/libs directory: one with dependencies packaged inside and another without.

Prerequisites

Building requires a working installation of Docker and Docker Compose, as unit tests are executed against a PostgreSQL instance in a private test container that is automatically started.

Testing the Driver

To test the pgjdbc-ng driver, you need to have a PostgreSQL database available for the unit tests to run against. As previously mentioned, the build process automatically configures a Docker container for testing, but you can also run tests against a specific PostgreSQL instance if needed.

If you don’t have Docker installed or wish to execute tests against a specific instance, use the following command:

.gradlew -PnoDocker=true test

Make sure that the unit tests can connect to your PostgreSQL instance with the following default credentials:

• SERVER: localhost
• PORT: 5432
• DATABASE: test
• USERNAME: test
• PASSWORD: test

Troubleshooting

Encountering issues? Here are some troubleshooting tips:

• Ensure that Docker is installed and running correctly if you’re using it for your tests.
• Verify that the PostgreSQL server is accessible and listening on the specified port (5432).
• Check that the database credentials used by the unit tests match your PostgreSQL setup.

If you continue to experience difficulties, feel free to consult the documentation or the User Guide for more detailed insights.

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Conclusion

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