Package org.apache.ojb.broker.util.sequence

This package contains classes that provide the OJB sequence numering.

See: Description

Interface Summary

Interface	Description
SequenceManager	SequenceManagers are responsible for creating new unique ID's - unique accross all "extent" object declarations in OJB metadata.

Class Summary

Class	Description
AbstractSequenceManager	A base class for sequence manager implementations.
HighLowSequence	The HighLowSequence is the persistent part of the SequenceManagerHighLowImpl.
SequenceManagerFactory	Threadsafe factory class, creates SequenceManager instances.
SequenceManagerHelper	Helper class for SequenceManager implementations.
SequenceManagerHighLowImpl	High/Low sequence manager implementation generates unique and continuous id's (during runtime) by using sequences to avoid database access.
SequenceManagerInMemoryImpl	Very fast in memory sequence manager implementation, only the first time an id was requested for a class, the manager query the database for the max id in requested column - all following request were performed in memory.
SequenceManagerMSSQLGuidImpl	An Implementation Class that will retrieve a valid new value for a PK field that is of type 'uniqueidentifier'.
SequenceManagerNativeImpl	Sequence manager implementation using native database Identity columns (like MySQL, MSSQL, ...).
SequenceManagerNextValImpl	This SequenceManager implementation uses database sequence key generation (e.g supported by Oracle, SAP DB, PostgreSQL, ...).
SequenceManagerSeqHiLoImpl	A High/Low database sequence based implementation.
SequenceManagerStoredProcedureImpl	This solution will give those seeking an oracle-style sequence generator a final answer (Identity columns really suck).
SequenceManagerTransientImpl	For internal use only! This class is used to create transient primary key values for transient Identity objects.

Exception Summary

Exception	Description
SequenceManagerException	An exception thrown by SequenceManager implementations.

Package org.apache.ojb.broker.util.sequence Description

This package contains classes that provide the OJB sequence numering.