org.jdal.logic

Class ContextPersistentManager

java.lang.Object

org.jdal.logic.ContextPersistentManager

All Implemented Interfaces:

Dao<Object,Serializable>, PageableDataSource<Object>

public class ContextPersistentManager
extends Object
implements Dao<Object,Serializable>

Bulk all generics in one object to avoid excesive parametrization.

Author:

Jose Luis Martin

Constructor Summary

Constructors

Constructor and Description
ContextPersistentManager()

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(Collection<Object> collection) Delete a collection of entities
void	delete(Object entity) Delete an entity
void	deleteById(Collection<Serializable> ids) Delete a collection of Ids.
void	deleteById(Serializable id) Delete an object by primary key
boolean	exists(Serializable id) Checks for existence of an object of type T using the id arg.
List<Object>	findByNamedQuery(String queryName, Map<String,Object> queryParams) Find a list of records by using a named query
Object	get(Serializable id) Find object by id
<E> E	get(Serializable id, Class<E> clazz)
List<Object>	getAll() Get all models
<E> List<E>	getAll(Class<E> clazz)
Class<Object>	getEntityClass() Return the entity class
List<Serializable>	getKeys(Page<Object> page) Gets a List with keys of page
<K> Page<K>	getPage(Page<K> page) Fill and return a page of data
void	init()
Object	initialize(Object entity) Initalize entity at default depth
Object	initialize(Object entity, int depth) Initalize entity
Collection<Object>	save(Collection<Object> collection) Save a collection entity
Object	save(Object entity) Save or update an object

Methods inherited from class java.lang.Object

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

Constructor Detail

ContextPersistentManager

public ContextPersistentManager()

Method Detail

init

public void init()

getPage

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

Fill and return a page of data

Specified by:

getPage in interface PageableDataSource<Object>

Returns:

the page

getKeys

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

Gets a List with keys of page

Specified by:

getKeys in interface PageableDataSource<Object>

Returns:

List with keys

initialize

public Object initialize(Object entity,
                int depth)

Initalize entity

Specified by:

initialize in interface Dao<Object,Serializable>

Parameters:

entity - to intialize

depth - to descend.

Returns:

intialized entity

initialize

public Object initialize(Object entity)

Initalize entity at default depth

Specified by:

initialize in interface Dao<Object,Serializable>

Parameters:

entity - to intialize

Returns:

intialized entity

save

public Object save(Object entity)

Save or update an object

Specified by:

save in interface Dao<Object,Serializable>

Parameters:

entity - the object to save

Returns:

the persisted object

delete

public void delete(Object entity)

Delete an entity

Specified by:

delete in interface Dao<Object,Serializable>

Parameters:

entity - to delete

deleteById

public void deleteById(Serializable id)

Delete an object by primary key

Specified by:

deleteById in interface Dao<Object,Serializable>

Parameters:

id - the primary key

getAll

public List<Object> getAll()

Get all models

Specified by:

getAll in interface Dao<Object,Serializable>

Returns:

List of entities

save

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

Save a collection entity

Specified by:

save in interface Dao<Object,Serializable>

Parameters:

collection - collectin to save

Returns:

the persisted collection.

delete

public void delete(Collection<Object> collection)

Delete a collection of entities

Specified by:

delete in interface Dao<Object,Serializable>

Parameters:

collection - collectin to delete

deleteById

public void deleteById(Collection<Serializable> ids)

Delete a collection of Ids.

Specified by:

deleteById in interface Dao<Object,Serializable>

Parameters:

ids - ids to delete

get

public Object get(Serializable id)

Find object by id

Specified by:

get in interface Dao<Object,Serializable>

Parameters:

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

Returns:

entity or null if none

get

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

Specified by:

get in interface Dao<Object,Serializable>

getAll

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

Specified by:

getAll in interface Dao<Object,Serializable>

getEntityClass

public Class<Object> getEntityClass()

Return the entity class

Specified by:

getEntityClass in interface Dao<Object,Serializable>

Returns:

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

exists

public boolean exists(Serializable id)

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

Specified by:

exists in interface Dao<Object,Serializable>

Parameters:

id - the id of the entity

Returns:

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

findByNamedQuery

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

Find a list of records by using a named query

Specified by:

findByNamedQuery in interface Dao<Object,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