org.hibernate.id
Class TableHiLoGenerator
java.lang.Object
org.hibernate.engine.TransactionHelper
org.hibernate.id.TableGenerator
org.hibernate.id.TableHiLoGenerator
- All Implemented Interfaces:
- Configurable, IdentifierGenerator, PersistentIdentifierGenerator
public class TableHiLoGenerator
- extends TableGenerator
hilo
An IdentifierGenerator that returns a Long, constructed using
a hi/lo algorithm. The hi value MUST be fetched in a separate transaction
to the Session transaction so the generator must be able to obtain
a new connection and commit it. Hence this implementation may not
be used when the user is supplying connections. In this
case a SequenceHiLoGenerator would be a better choice (where
supported).
Mapping parameters supported: table, column, max_lo
- Author:
- Gavin King
- See Also:
SequenceHiLoGenerator
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
MAX_LO
public static final String MAX_LO
- The max_lo parameter
- See Also:
- Constant Field Values
TableHiLoGenerator
public TableHiLoGenerator()
configure
public void configure(Type type,
Properties params,
Dialect d)
- Description copied from interface:
Configurable
- Configure this instance, given the value of parameters
specified by the user as <param> elements.
This method is called just once, following instantiation.
- Specified by:
configure
in interface Configurable
- Overrides:
configure
in class TableGenerator
params
- param values, keyed by parameter name
generate
public Serializable generate(SessionImplementor session,
Object obj)
- Description copied from interface:
IdentifierGenerator
- Generate a new identifier.
- Specified by:
generate
in interface IdentifierGenerator
- Overrides:
generate
in class TableGenerator
obj
- the entity or toplevel collection for which the id is being generated
- Returns:
- a new identifier
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