com.foreach.across.modules.hibernate.id

Class AcrossSequenceGenerator

java.lang.Object

org.hibernate.id.enhanced.TableGenerator

com.foreach.across.modules.hibernate.id.AcrossSequenceGenerator

All Implemented Interfaces:

org.hibernate.boot.model.relational.ExportableProducer, org.hibernate.id.Configurable, org.hibernate.id.IdentifierGenerator, org.hibernate.id.PersistentIdentifierGenerator

public class AcrossSequenceGenerator
extends org.hibernate.id.enhanced.TableGenerator

Custom TableGenerator strategy for generating long ids. Has support for manually defining an id value and inserting an entity with that value instead. Note that the repository code should support this behavior correctly, and special care should be taken to avoid manual ids interfering with the sequence values.

     @GeneratedValue(generator = "seq_um_user_id")
           @GenericGenerator(
                        name = "seq_um_user_id",
                        strategy = "com.foreach.across.modules.hibernate.id.AcrossSequenceGenerator",
                        parameters = {
                                        @Parameter(name = "sequenceName", value = "seq_um_user_id"),
                                        @Parameter(name = "allocationSize", value = "10")
            }
            )
 

The following parameters can be configured:

• sequenceName: mandatory, name of the sequence in the sequences table
• allowPredefinedIds: true if the generator should support manually inserting ids (default: true)
• allocationSize: sequence allocation size (default: 50)
• initialValue: initial sequence value (default: 1)

See Also:

AcrossSequencesInstaller, SettableIdBasedEntity

Field Summary

Fields

Modifier and Type	Field and Description
static String	STRATEGY

Fields inherited from class org.hibernate.id.enhanced.TableGenerator

CONFIG_PREFER_SEGMENT_PER_ENTITY, DEF_SEGMENT_COLUMN, DEF_SEGMENT_LENGTH, DEF_SEGMENT_VALUE, DEF_TABLE, DEF_VALUE_COLUMN, DEFAULT_INCREMENT_SIZE, DEFAULT_INITIAL_VALUE, INCREMENT_PARAM, INITIAL_PARAM, OPT_PARAM, SEGMENT_COLUMN_PARAM, SEGMENT_LENGTH_PARAM, SEGMENT_VALUE_PARAM, TABLE_PARAM, VALUE_COLUMN_PARAM

Fields inherited from interface org.hibernate.id.PersistentIdentifierGenerator

CATALOG, IDENTIFIER_NORMALIZER, PK, SCHEMA, TABLE, TABLES

Fields inherited from interface org.hibernate.id.IdentifierGenerator

ENTITY_NAME, GENERATOR_NAME, JPA_ENTITY_NAME

Constructor Summary

Constructors

Constructor and Description
AcrossSequenceGenerator()

Method Summary

Modifier and Type	Method and Description
void	configure(org.hibernate.type.Type type, Properties params, org.hibernate.service.ServiceRegistry serviceRegistry)
Serializable	generate(org.hibernate.engine.spi.SharedSessionContractImplementor session, Object object)

Methods inherited from class org.hibernate.id.enhanced.TableGenerator

buildInsertQuery, buildSelectQuery, buildUpdateQuery, determineDefaultSegmentValue, determineGeneratorTableName, determineIncrementSize, determineInitialValue, determineSegmentColumnName, determineSegmentColumnSize, determineSegmentValue, determineValueColumnName, generateInsertInitCommand, generatorKey, getIdentifierType, getIncrementSize, getInitialValue, getOptimizer, getSegmentColumnName, getSegmentValue, getSegmentValueLength, getTableAccessCount, getTableName, getValueColumnName, registerExportables, sqlCreateStrings, sqlDropStrings

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.id.IdentifierGenerator

supportsJdbcBatchInserts

Field Detail

STRATEGY

public static final String STRATEGY

See Also:

Constant Field Values

Constructor Detail

AcrossSequenceGenerator

public AcrossSequenceGenerator()

Method Detail

configure

public void configure(org.hibernate.type.Type type,
                      Properties params,
                      org.hibernate.service.ServiceRegistry serviceRegistry)
               throws org.hibernate.MappingException

Specified by:

configure in interface org.hibernate.id.Configurable

Overrides:

configure in class org.hibernate.id.enhanced.TableGenerator

Throws:

org.hibernate.MappingException

generate

public Serializable generate(org.hibernate.engine.spi.SharedSessionContractImplementor session,
                             Object object)

Specified by:

generate in interface org.hibernate.id.IdentifierGenerator

Overrides:

generate in class org.hibernate.id.enhanced.TableGenerator