org.openxma.dsl.reference.dao
Interface CategoryDao

All Superinterfaces:

org.openxma.dsl.platform.dao.EntityFactory<Category>, org.openxma.dsl.platform.dao.GenericDao<Category,java.lang.String>

All Known Implementing Classes:

CategoryDaoImpl

public interface CategoryDao
extends org.openxma.dsl.platform.dao.GenericDao<Category,java.lang.String>, org.openxma.dsl.platform.dao.EntityFactory<Category>

Represents a Data Access Object, as defined in the Core J2EE Pattern Catalog (see http://java.sun.com/blueprints/corej2eepatterns/Patterns/DataAccessObject.html), to abstract and encapsulate all access to entity CategoryDao.

See Also:

CategoryDao

Method Summary

Category	create() Factory method to create an empty CategoryDao entity with an already assigned identifier.
Category	create(java.lang.String name) Factory method to create an empty CategoryDao taking all not null attributes.
Category	createAndSave(java.lang.String name) Factory method to create and save an empty CategoryDao taking all not null attributes.

Methods inherited from interface org.openxma.dsl.platform.dao.GenericDao

delete, delete, evict, find, findAll, findByExample, get, load, merge, refresh, saveOrUpdate, update

Methods inherited from interface org.openxma.dsl.platform.dao.EntityFactory

createEntity

Method Detail

create

Category create()

Factory method to create an empty CategoryDao entity with an already assigned identifier. The advantage of this approach, coupled with the fact that we're using the id for equals, is that equality test's are immediately possible and therefore independent from the persistence state of the entity. This in contrast to other solutions where auto generated Keys are used which must wait until the object is persisted or differentiate between transient and managed states.

Returns:

a new (non managed), empty CategoryDao entity with an already assigned identifier.

create

Category create(java.lang.String name)

Factory method to create an empty CategoryDao taking all not null attributes.

Parameters:

name -

Returns:

a new, transient (i.e. is not associated with a persistence context and has no persistent representation in the database) CategoryDao entity with the given natural identifier and not null attributes set.

createAndSave

Category createAndSave(java.lang.String name)

Factory method to create and save an empty CategoryDao taking all not null attributes.

Parameters:

name -

Returns:

a new, transient (i.e. is not associated with a persistence context and has no persistent representation in the database) CategoryDao entity with the given natural identifier and not null attributes set.