MultipleHiLoPerTableGenerator

Class Overview

A hilo IdentifierGenerator that returns a Long, constructed using a hi/lo algorithm. The hi value MUST be fetched in a seperate 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).

A hilo IdentifierGenerator that uses a database table to store the last generated values. A table can contains several hi values. They are distinct from each other through a key

This implementation is not compliant with a user connection

Allowed parameters (all of them are optional):

• table: table name (default hibernate_sequences)
• primary_key_column: key column name (default sequence_name)
• value_column: hi value column name(default sequence_next_hi_value)
• primary_key_value: key value for the current entity (default to the entity's primary table name)
• primary_key_length: length of the key column in DB represented as a varchar (default to 255)
• max_lo: max low value before increasing hi (default to Short.MAX_VALUE)

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.