SequenceHiLoGenerator (Hibernate Core Aggregator 3.6.10.Final API)

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java.lang.Object
- org.hibernate.id.SequenceGenerator
- - org.hibernate.id.SequenceHiLoGenerator

All Implemented Interfaces:

Configurable, IdentifierGenerator, PersistentIdentifierGenerator
```
public class SequenceHiLoGenerator
extends SequenceGenerator
```
seqhilo

An IdentifierGenerator that combines a hi/lo algorithm with an underlying oracle-style sequence that generates hi values. The user may specify a maximum lo value to determine how often new hi values are fetched.

If sequences are not available, TableHiLoGenerator might be an alternative.

Mapping parameters supported: sequence, max_lo, parameters.

Author:

Gavin King

See Also:
TableHiLoGenerator

Field Summary

Fields
Modifier and Type Field and Description

static String MAX_LO
- Fields inherited from class org.hibernate.id.SequenceGenerator
  PARAMETERS, SEQUENCE
- Fields inherited from interface org.hibernate.id.PersistentIdentifierGenerator
  CATALOG, IDENTIFIER_NORMALIZER, PK, SCHEMA, SQL_STATEMENT_LOGGER, TABLE, TABLES
- Fields inherited from interface org.hibernate.id.IdentifierGenerator
  ENTITY_NAME

Constructor Summary

Constructors
Constructor and Description

SequenceHiLoGenerator()

Method Summary

Methods
Modifier and Type	Method and Description
`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.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

- Field Detail
  - MAX_LO
```
public static final String MAX_LO
```
    See Also:
    Constant Field Values
- Constructor Detail
  - SequenceHiLoGenerator
```
public SequenceHiLoGenerator()
```
- Method Detail
  - configure
```
public void configure(Type type,
             Properties params,
             Dialect d)
               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
  - 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 SequenceGenerator
    
    obj - the entity or toplevel collection for which the id is being generated
    
    Returns:
    a new identifier

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