Package org.datanucleus.sco

Provides the mechanism for supporting mutable Second-Class Objects (SCOs).

See:
Description

Interface Summary

SCO	Representation of a wrapper/proxy for a mutable SCO type supported.
SCOCollection	Representation of a wrapper for a mutable Collection SCO type supported.
SCOContainer	Representation of a SCO that contains other (persistable) objects.
SCOList	Representation of a wrapper for a mutable List SCO type supported.
SCOMap	Representation of a wrapper for a mutable Map SCO type supported.
SCOMtoN	Representation of a SCO type that can be used as one side of an M-N relation.

Class Summary

SCOCollectionIterator	An iterator for a SCO Collection object.
SCOListIterator	An iterator for a SCO List object.
SCOUtils	Collection of utilities for second class wrappers and objects.
UnsetOwners	Utility class to handle the unsetting of owner fields.

Exception Summary

IncompatibleFieldTypeException	A IncompatibleFieldTypeException is thrown if an incompatible field type is specified in the construction of a second-class object instance.
NullsNotAllowedException	Exception thrown if an attempt is made to insert a null object into a Collection or Map that doesn't support nulls.

Package org.datanucleus.sco Description

Provides the mechanism for supporting mutable Second-Class Objects (SCOs). Please refer to section 6.3 of the JDO 1.0 spec. Subdirectories provide implementations of the supported types, providing either a simple interception capability, or a full implementation with backing store, and queueing of operations etc.