org.jdal.logic

Class PersistentManager<T,PK extends Serializable>

java.lang.Object

org.jdal.logic.PersistentManager<T,PK>

All Implemented Interfaces:

Dao<T,PK>, PageableDataSource<T>, PersistentService<T,PK>

Direct Known Subclasses:

ReportManager

public class PersistentManager<T,PK extends Serializable>
extends Object
implements PersistentService<T,PK>

Base class for Services that wrappers persistent operations to DAO.

Author:

Jose Luis Martin

Field Summary

Fields

Modifier and Type	Field and Description
protected Dao<T,PK>	dao
static int	DEFAULT_DEPTH

Constructor Summary

Constructors

Constructor and Description
PersistentManager()

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(Collection<T> collection) Delete a collection of entities
void	delete(T entity) Delete an entity
void	deleteById(Collection<PK> ids) Delete a collection of Ids.
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)
Dao<T,PK>	getDao()
Class<T>	getEntityClass() Return the entity class
List<Serializable>	getKeys(Page<T> page) Gets a List with keys of page
<K> Page<K>	getPage(Page<K> page) Fill and return a page of data
T	initialize(T entity) Initalize entity at default depth
T	initialize(T entity, int depth) Initalize entity
Collection<T>	save(Collection<T> collection) Save a collection entity
T	save(T entity) Save or update an object
void	setDao(Dao<T,PK> dao)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_DEPTH

public static final int DEFAULT_DEPTH

See Also:

Constant Field Values

dao

protected Dao<T,PK extends Serializable> dao

Constructor Detail

PersistentManager

public PersistentManager()

Method Detail

delete

public void delete(T entity)

Delete an entity

Specified by:

delete in interface Dao<T,PK extends Serializable>

Parameters:

entity - to delete

initialize

public T initialize(T entity,
           int depth)

Initalize entity

Specified by:

initialize in interface Dao<T,PK extends Serializable>

Parameters:

entity - to intialize

depth - to descend.

Returns:

intialized entity

initialize

public T initialize(T entity)

Initalize entity at default depth

Specified by:

initialize in interface Dao<T,PK extends Serializable>

Parameters:

entity - to intialize

Returns:

intialized entity

getAll

public List<T> getAll()

Get all models

Specified by:

getAll in interface Dao<T,PK extends Serializable>

Returns:

List of entities

save

public T save(T entity)

Save or update an object

Specified by:

save in interface Dao<T,PK extends Serializable>

Parameters:

entity - the object to save

Returns:

the persisted object

delete

public void delete(Collection<T> collection)

Delete a collection of entities

Specified by:

delete in interface Dao<T,PK extends Serializable>

Parameters:

collection - collectin to delete

save

public Collection<T> save(Collection<T> collection)

Save a collection entity

Specified by:

save in interface Dao<T,PK extends Serializable>

Parameters:

collection - collectin to save

Returns:

the persisted collection.

deleteById

public void deleteById(PK id)

Delete an object by primary key

Specified by:

deleteById in interface Dao<T,PK extends Serializable>

Parameters:

id - the primary key

deleteById

public void deleteById(Collection<PK> ids)

Delete a collection of Ids.

Specified by:

deleteById in interface Dao<T,PK extends Serializable>

Parameters:

ids - ids to delete

getKeys

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

Gets a List with keys of page

Specified by:

getKeys in interface PageableDataSource<T>

Returns:

List with keys

getPage

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

Fill and return a page of data

Specified by:

getPage in interface PageableDataSource<T>

Returns:

the page

getDao

public Dao<T,PK> getDao()

setDao

public void setDao(Dao<T,PK> dao)

get

public T get(PK id)

Find object by id

Specified by:

get in interface Dao<T,PK extends Serializable>

Parameters:

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

Returns:

entity or null if none

get

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

Specified by:

get in interface Dao<T,PK extends Serializable>

getAll

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

Specified by:

getAll in interface Dao<T,PK extends Serializable>

getEntityClass

public Class<T> getEntityClass()

Return the entity class

Specified by:

getEntityClass in interface Dao<T,PK extends Serializable>

Returns:

the entity class handled for this DAO, Maybe Object.class

exists

public boolean exists(PK id)

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

Specified by:

exists in interface Dao<T,PK extends Serializable>

Parameters:

id - the id of the entity

Returns:

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

findByNamedQuery

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

Find a list of records by using a named query

Specified by:

findByNamedQuery in interface Dao<T,PK extends Serializable>

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