TableHiLoGenerator (Hibernate JavaDocs)
Date: 2012-04-05

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## org.hibernate.id
Class TableHiLoGenerator

    java.lang.Object
      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

See Also:
  `SequenceHiLoGenerator`

Field Summary
`static String` | `MAX_LO` The max_lo parameter

Fields inherited from class org.hibernate.id.TableGenerator
`COLUMN, DEFAULT_COLUMN_NAME, DEFAULT_TABLE_NAME, TABLE`

Fields inherited from interface org.hibernate.id.PersistentIdentifierGenerator
`CATALOG, IDENTIFIER_NORMALIZER, PK, SCHEMA, TABLES`

Fields inherited from interface org.hibernate.id.IdentifierGenerator
`ENTITY_NAME`

Constructor Summary
`TableHiLoGenerator()`

Method Summary
`void` | `configure(Type type, Properties params, Dialect d)` Configure this instance, given the value of parameters specified by the user as `<param>` elements.
`Serializable` | `generate(SessionImplementor session, Object obj)` Generate a new identifier.

Methods inherited from class org.hibernate.id.TableGenerator
`buildHolder, generateHolder, generatorKey, sqlCreateStrings, sqlDropStrings`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### MAX_LO

    public static final String MAX_LO

  The max_lo parameter

  See Also:
    Constant Field Values

Constructor Detail

### TableHiLoGenerator

    public TableHiLoGenerator()

Method Detail

### 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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