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Welcome to PL/Java

This is the PL/Java Wiki. It contains installation instructions, documentation, some technical background, and community information. If you have comments or ideas regarding this wiki, please convey them on the community.

Overview

PL/Java is a free add-on module that brings Java™ Stored Procedures, Triggers, and Functions to the PostgreSQL™ backend. The development started late 2003 and the first release of PL/Java arrived in January 2005. The project is released under the Berkley/BSD license.

Features

Ability to write both functions and triggers using Java 1.4 or higher.
Standardized utilities (modeled after the SQL 2003 proposal) to install and maintain Java code in the database.
Standardized mappings of parameters and result. Supports scalar and composite UDT's, pseudo types, arrays, and sets.
An embedded, high performance, JDBC driver utilizing the internal PostgreSQL SPI routines.
Metadata support for the JDBC driver. Both DatabaseMetaData and ResultSetMetaData are included.
Full support for PostgreSQL 8.0 savepoints and exception handling.
Ability to use IN, INOUT, and OUT parameters when used with PostgreSQL 8.1 or higher
Two language handlers, one TRUSTED (the default) and one that is not TRUSTED (language tag is javaU to conform with the defacto standard)
Transaction and Savepoint listeners enabling code execution when a transaction or savepoint is commited or rolled back.
Integration with GNU GCJ on selected platforms.