org.hibernate.id
Class SequenceIdentityGenerator

java.lang.Object
  org.hibernate.id.SequenceGenerator
      org.hibernate.id.SequenceIdentityGenerator

All Implemented Interfaces:

Configurable, IdentifierGenerator, PersistentIdentifierGenerator, PostInsertIdentifierGenerator

public class SequenceIdentityGenerator
extends SequenceGenerator
implements PostInsertIdentifierGenerator

A generator which combines sequence generation with immediate retrieval through JDBC3 getGeneratedKeys. In this respect it works much like ANSI-SQL IDENTITY generation.

This generator only known to work with newer Oracle drivers compiled for JDK 1.4 (JDBC3).

Note: Due to a bug in Oracle drivers, sql comments on these insert statements are completely disabled.

Author:

Steve Ebersole

Nested Class Summary

static class	SequenceIdentityGenerator.Delegate
static class	SequenceIdentityGenerator.NoCommentsInsert

Field Summary

Fields inherited from class org.hibernate.id.SequenceGenerator

PARAMETERS, SEQUENCE

Fields inherited from interface org.hibernate.id.IdentifierGenerator

ENTITY_NAME

Fields inherited from interface org.hibernate.id.PersistentIdentifierGenerator

CATALOG, IDENTIFIER_NORMALIZER, PK, SCHEMA, SQL_STATEMENT_LOGGER, TABLE, TABLES

Constructor Summary

SequenceIdentityGenerator()

Method Summary

void	configure(Type type, Properties params, Dialect dialect) Configure this instance, given the value of parameters specified by the user as <param> elements.
Serializable	generate(SessionImplementor s, Object obj) Generate a new identifier.
InsertGeneratedIdentifierDelegate	getInsertGeneratedIdentifierDelegate(PostInsertIdentityPersister persister, Dialect dialect, boolean isGetGeneratedKeysEnabled)

Methods inherited from class org.hibernate.id.SequenceGenerator

buildHolder, generateHolder, generatorKey, getIdentifierType, getSequenceName, sqlCreateStrings, sqlDropStrings

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SequenceIdentityGenerator

public SequenceIdentityGenerator()

Method Detail

generate

public Serializable generate(SessionImplementor s,
                             Object obj)

Description copied from interface: IdentifierGenerator

Generate a new identifier.

Specified by:

generate in interface IdentifierGenerator

Overrides:

generate in class SequenceGenerator

obj - the entity or toplevel collection for which the id is being generated

Returns:

a new identifier

getInsertGeneratedIdentifierDelegate

public InsertGeneratedIdentifierDelegate getInsertGeneratedIdentifierDelegate(PostInsertIdentityPersister persister,
                                                                              Dialect dialect,
                                                                              boolean isGetGeneratedKeysEnabled)
                                                                       throws HibernateException

Specified by:

getInsertGeneratedIdentifierDelegate in interface PostInsertIdentifierGenerator

Throws:

HibernateException

configure

public void configure(Type type,
                      Properties params,
                      Dialect dialect)
               throws MappingException

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 SequenceGenerator

params - param values, keyed by parameter name

Throws:

MappingException