org.jdal.dao.jpa

Class JpaDao<T,PK extends Serializable>

java.lang.Object

org.jdal.dao.DaoSupport<T,PK>

org.jdal.dao.jpa.JpaDao<T,PK>

All Implemented Interfaces:

Dao<T,PK>, PageableDataSource<T>

Direct Known Subclasses:

JpaUserPreferenceDao, PersistentServiceJpaDao

public class JpaDao<T,PK extends Serializable>
extends DaoSupport<T,PK>

Dao implementation for JPA

Since:

1.1

Author:

Jose Luis Martin

See Also:

Dao

Constructor Summary

Constructors

Constructor and Description
JpaDao() Default Ctor, When using it, you need to set entityClass
JpaDao(Class<T> entityClass) Create a new JpaDao for entity class

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(T entity) Delete an entity
void	deleteById(PK id) Delete an object by primary key
boolean	exists(PK id) Checks for existence of an object of type T using the id arg.
List<T>	findByNamedQuery(String queryName, Map<String,Object> queryParams) Find a list of records by using a named query
T	get(PK id) Find object by id
<E> E	get(PK id, Class<E> clazz)
List<T>	getAll() Get all models
<E> List<E>	getAll(Class<E> clazz)
Map<String,JpaCriteriaBuilder<?>>	getCriteriaBuilderMap()
Class<T>	getEntityClass() Return the entity class
javax.persistence.EntityManager	getEntityManager()
List<Serializable>	getKeys(Page<T> page) Gets a List with keys of page
protected <K> javax.persistence.TypedQuery<K>	getNamedQuery(Page<K> page) Gets a NamedQuery from page, setup order, params and page result count.
<K> Page<K>	getPage(Page<K> page) Fill and return a page of data
QueryFinder	getQueryFinder()
protected String	getQueryString(String name) Gets query string fro named query using configured QueryFinder, if it's null use EntityTypeQueryFinder as defaults (looks for anntations on entity class).
T	initialize(T entity) Initalize entity at default depth
T	initialize(T entity, int depth) Initalize entity
protected boolean	isNew(T entity) Test if entity is New
boolean	isOnDeleteSetNull()
T	save(T entity) Save or update an object
void	setCriteriaBuilderMap(Map<String,JpaCriteriaBuilder<T>> criteriaBuilderMap)
void	setEntityClass(Class<T> entityClass)
void	setEntityManager(javax.persistence.EntityManager em)
void	setOnDeleteSetNull(boolean onDeleteSetNull)
void	setQueryFinder(QueryFinder queryFinder)

Methods inherited from class org.jdal.dao.DaoSupport

delete, deleteById, save

Methods inherited from class java.lang.Object

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

Constructor Detail

JpaDao

public JpaDao()

Default Ctor, When using it, you need to set entityClass

JpaDao

public JpaDao(Class<T> entityClass)

Create a new JpaDao for entity class

Parameters:

entityClass - class to map.

Method Detail

getPage

public <K> Page<K> getPage(Page<K> page)

Fill and return a page of data

Returns:

the page

getKeys

public List<Serializable> getKeys(Page<T> page)

Gets a List with keys of page

Returns:

List with keys

getNamedQuery

protected <K> javax.persistence.TypedQuery<K> getNamedQuery(Page<K> page)

Gets a NamedQuery from page, setup order, params and page result count.

Parameters:

page - request page

Returns:

a TypedQuery from a NamedQuery

getQueryString

protected String getQueryString(String name)

Gets query string fro named query using configured QueryFinder, if it's null use EntityTypeQueryFinder as defaults (looks for anntations on entity class).

Parameters:

name - query name

Returns:

query string.

findByNamedQuery

public List<T> findByNamedQuery(String queryName,
                       Map<String,Object> queryParams)

Find a list of records by using a named query

Parameters:

queryName - query name of the named query

queryParams - a map of the query names and the values

Returns:

a list of the records found

get

public T get(PK id)

Find object by id

Parameters:

id - the identifier (primary key) of the object to get

Returns:

entity or null if none

getAll

public List<T> getAll()

Get all models

Returns:

List of entities

delete

public void delete(T entity)

Delete an entity

Parameters:

entity - to delete

deleteById

public void deleteById(PK id)

Delete an object by primary key

Parameters:

id - the primary key

exists

public boolean exists(PK id)

Checks for existence of an object of type T using the id arg.

Parameters:

id - the id of the entity

Returns:

- true if it exists, false if it doesn't

initialize

public T initialize(T entity)

Initalize entity at default depth

Parameters:

entity - to intialize

Returns:

intialized entity

initialize

public T initialize(T entity,
           int depth)

Initalize entity

Parameters:

entity - to intialize

depth - to descend.

Returns:

intialized entity

save

public T save(T entity)

Save or update an object

Parameters:

entity - the object to save

Returns:

the persisted object

isNew

protected boolean isNew(T entity)

Test if entity is New

Parameters:

entity -

Returns:

true if entity is new, ie not detached

getEntityClass

public Class<T> getEntityClass()

Description copied from interface: Dao

Return the entity class

Returns:

entity class

getCriteriaBuilderMap

public Map<String,JpaCriteriaBuilder<?>> getCriteriaBuilderMap()

Returns:

the criteriaBuilderMap

setCriteriaBuilderMap

public void setCriteriaBuilderMap(Map<String,JpaCriteriaBuilder<T>> criteriaBuilderMap)

Parameters:

criteriaBuilderMap - the criteriaBuilderMap to set

getQueryFinder

public QueryFinder getQueryFinder()

Returns:

the queryFinder

setQueryFinder

public void setQueryFinder(QueryFinder queryFinder)

Parameters:

queryFinder - the queryFinder to set

get

public <E> E get(PK id,
        Class<E> clazz)

getAll

public <E> List<E> getAll(Class<E> clazz)

getEntityManager

public javax.persistence.EntityManager getEntityManager()

Returns:

the em

setEntityManager

public void setEntityManager(javax.persistence.EntityManager em)

Parameters:

em - the em to set

setEntityClass

public void setEntityClass(Class<T> entityClass)

Parameters:

entityClass - the entityClass to set

isOnDeleteSetNull

public boolean isOnDeleteSetNull()

Returns:

the onDeleteSetNull

setOnDeleteSetNull

public void setOnDeleteSetNull(boolean onDeleteSetNull)

Parameters:

onDeleteSetNull - the onDeleteSetNull to set