Apache Torque

Apache Torque is a middle layer that stands between your Java code and the database server.

It works by taking custom Torque Java objects and converting them into compliant SQL code that can be run on the database.

Besides just running SQL statements, Torque also retrieves the results and makes them readily available to developers as basic Java objects.

Torque uses XML schemas to tell the ORM how the database is shaped and organized, or it can also use these files to generate a new database from them.

Torque was developed as part of the Apache Turbine framework.

What is new in this release:

• Updates using custom SQL now use prepared statements.
• The documentation is now available for download.
• The documentation structure was reorganized.
• There are now specific exceptions thrown for deadlocks and constraint violations (DeadlockException and ConstraintViolationException).
• Associated object state can now be set by a bulk operation (see generated setAndSave methods in Peers).