TableGenerator

Class Overview

An IdentifierGenerator that uses a database table to store the last generated value. It is not intended that applications use this strategy directly. However, it may be used to build other (efficient) strategies. The returned type is any supported by IntegralDataTypeHolder

The value MUST be fetched in a separate transaction from that of the main session transaction so the generator must be able to obtain a new connection and commit it. Hence this implementation may only be used when Hibernate is fetching connections, not when the user is supplying connections.

Again, the return types supported here are any of the ones supported by IntegralDataTypeHolder. This is new as of 3.5. Prior to that this generator only returned Integer values.

Mapping parameters supported: table, column

Summary

[Expand] Inherited Constants
From interface org.hibernate.id.IdentifierGenerator String ENTITY_NAME The configuration parameter holding the entity name
From interface org.hibernate.id.PersistentIdentifierGenerator String CATALOG The configuration parameter holding the catalog name String IDENTIFIER_NORMALIZER The key under whcih to find the ObjectNameNormalizer in the config param map. String PK The configuration parameter holding the primary key column name of the generated id String SCHEMA The configuration parameter holding the schema name String TABLE The configuration parameter holding the table name for the generated id String TABLES The configuration parameter holding the table names for all tables for which the id must be unique

[Expand] Inherited Fields
From interface org.hibernate.id.PersistentIdentifierGenerator public static final SQLStatementLogger SQL_STATEMENT_LOGGER

[Expand] Inherited Methods
From class org.hibernate.engine.TransactionHelper abstract Serializable doWorkInCurrentTransaction(Connection conn, String sql) The work to be done Serializable doWorkInNewTransaction(SessionImplementor session) Suspend the current transaction and perform work in a new transaction
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait() final void wait(long arg0, int arg1) final void wait(long arg0)
From interface org.hibernate.id.Configurable abstract void configure(Type type, Properties params, Dialect d) Configure this instance, given the value of parameters specified by the user as <param> elements.
From interface org.hibernate.id.IdentifierGenerator abstract Serializable generate(SessionImplementor session, Object object) Generate a new identifier.
From interface org.hibernate.id.PersistentIdentifierGenerator abstract Object generatorKey() Return a key unique to the underlying database objects. abstract String[] sqlCreateStrings(Dialect dialect) The SQL required to create the underlying database objects. abstract String[] sqlDropStrings(Dialect dialect) The SQL required to remove the underlying database objects.