Chapter 4 Generating Hibernate Persistent Objects and JSF Pages


Hibernate class mapping options

Hibernate-specific class mapping options can be defined in the Hibernate tab of the class property sheet:


Option Description
Dynamic insert Specifies that INSERT SQL should be generated at runtime and will contain only the columns whose values are not null.

Hibernate Tag: dynamic-insert
Dynamic update Specifies that UPDATE SQL should be generated at runtime and will contain only the columns whose values have changed.

Hibernate Tag: dynamic-update
Select before update Specifies that Hibernate should never perform a SQL UPDATE unless it is certain that an object is actually modified.

Hibernate Tag: select-before-update
Default cascade Specifies the default cascade style.

Hibernate Tag: default-cascade
Default access Specifies the default access type (field or property)

Hibernate Tag: default-access
Proxy name Specifies an interface to use for lazy initializing proxies.

Hibernate Tag: proxy
Batch size Specifies a "batch size" for fetching instances of this class by identifier.

Hibernate Tag: batch-size
Check Specifies a SQL expression used to generate a multi-row check constraint for automatic schema generation.

Hibernate Tag: check
Polymorphism Specifies whether implicit or explicit query polymorphism is used.

Hibernate Tag: polymorphism
Schema name Specifies the name of the database schema.

Hibernate Tag: schema
Catalog name Specifies the name of the database catalog.

Hibernate Tag: catalog
Row id Specifies that Hibernate can use the ROWID column on databases which support it (for example, Oracle).

Hibernate Tag: rowed
Persister class name Specifies a custom persistence class.

Hibernate Tag: persister
Value type Specifies that the persistent class is a value type.

Hibernate Tag: N/A
Lazy Specifies that the class should be lazy fetching.

Hibernate Tag: lazy
Mutable Specifies that instances of the class are mutable.

Hibernate Tag: mutable
Abstract class Specifies that the class is abstract.

Hibernate Tag: abstract
Auto import Specifies that an unqualified class name can be used in a query

Hibernate Tag: Auto-import
Discriminator column Specifies the discriminator column or formula for polymorphic behavior in a one table per hierarchy mapping strategy.

Hibernate Tag: discriminator
Discriminator value Specifies a value that distinguishes individual subclasses, which are used for polymorphic behavior.

Hibernate Tag: discriminator-value
Discriminator type Specifies the discriminator type.

Hibernate Tag: type
Force usage of discriminator Forces Hibernate to specify allowed discriminator values even when retrieving all instances of the root class.

Hibernate Tag: force
Do not use discriminator in insert Forces Hibernate to not include the column in SQL INSERTs

Hibernate Tag: insert
Optimistic lock type Specifies an optimistic locking strategy.

Hibernate Tag: optimistic-lock
Optimistic lock column name Specifies the column used for optimistic locking. A field is also generated if this option is set.

Hibernate Tag: version/ timestamp
Optimistic lock unsaved value Specifies whether an unsaved value is null or undefined.

Hibernate Tag: unsaved-value

 


Copyright (C) 2005. Sybase Inc. All rights reserved.