Package org.apache.torque
Torque is an object-relational mapper for Java. In other words, Torque lets you access and
manipulate data in a relational database using java objects. Unlike most other
object-relational mappers, Torque does not use reflection to access user-provided classes,
but it generates the necessary classes (including the Data Objects) from an XML schema
describing the database layout (which can either be written by hand or generated from an
existing database). The XML schema can also be used to generate and execute a SQL script
which creates all the tables in the database.
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Interface Summary Interface Description Column The metadata of a column (or pseudocolumn) in a database. -
Class Summary Class Description ColumnImpl An implementation of the column interface.Database Bundles all information about a database.Torque A static facade wrapper around the Torque implementation (which is inTorqueInstance
).TorqueInstance The core of Torque's implementation. -
Exception Summary Exception Description ConstraintViolationException This exception is thrown if a database operation violates a database constraint, e.g. a foreign key constraint, a unique constraint or a not-null constraint.DeadlockException This exception is thrown if the database detects a deadlock.NoRowsException This exception indicates that no rows were returned but at least one should have been returned.OptimisticLockingFailedException This exception is thrown if the database detects that a row in a table with optimistic locking was updated by another process.TooManyRowsException This exception indicates that more rows were returned than expected.TorqueException The base class of all checked exceptions thrown by Torque.TorqueRuntimeException This is the base class of all non-checked exceptions in Torque.