org.openxma.dsl.reference.dao
Interface ProductDao

All Superinterfaces:

org.openxma.dsl.platform.dao.EntityFactory<Product>, org.openxma.dsl.platform.dao.GenericDao<Product,ProductId>

All Known Implementing Classes:

ProductDaoImpl

public interface ProductDao
extends org.openxma.dsl.platform.dao.GenericDao<Product,ProductId>, org.openxma.dsl.platform.dao.EntityFactory<Product>

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 ProductDao.

See Also:

ProductDao

Method Summary

Product	create() Factory method to create an empty ProductDao entity with an already assigned identifier.
Product	create(Supplier supplier, java.lang.String name, java.lang.Integer unitPrice) Factory method to create an empty ProductDao taking all not null attributes.
Product	createAndSave(Supplier supplier, java.lang.String name, java.lang.Integer unitPrice) Factory method to create and save an empty ProductDao 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

Product create()

Factory method to create an empty ProductDao 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 ProductDao entity with an already assigned identifier.

create

Product create(Supplier supplier,
               java.lang.String name,
               java.lang.Integer unitPrice)

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

Parameters:

supplier -

name -

unitPrice -

Returns:

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

createAndSave

Product createAndSave(Supplier supplier,
                      java.lang.String name,
                      java.lang.Integer unitPrice)

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

Parameters:

supplier -

name -

unitPrice -

Returns:

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