Large objects

Large objects are supported in the standard JDBC specification. However, that interface is limited, and the API provided by PostgreSQL® allows for random access to the object’s contents, as if it were a local file.

The org.postgresql.largeobject package provides the libpq C interface’s large object API to Java. It consists of two classes: LargeObjectManager, which deals with creating, opening, and deleting large objects, and LargeObject, which deals with an individual object. For an example usage of this API, see Processing Binary Data in JDBC .