com.h3c.util.dao

Interface Dao<I extends Serializable,P extends Storable<I>,T extends Transportable<? super T,I>,F,S>

Type Parameters:

I - type of the persistent object and transport object id. This type should be immutable. It is critical this type implements equals() and hashCode() correctly.

P - type of model persistent object

T - type of the transport object

F - type of the associated filter

S - type of the associated sort specification type

All Superinterfaces:

BaseDao<I,P,T,F,S>, Converter<P,T>

All Known Implementing Classes:

AbstractDao

public interface Dao<I extends Serializable,P extends Storable<I>,T extends Transportable<? super T,I>,F,S>
extends BaseDao<I,P,T,F,S>, Converter<P,T>

Data Access Object.

Method Summary

Methods

Modifier and Type	Method and Description
P	create(T transportable, DataStoreContext context) Creates a new persistent object with the data from the given transport object.
long	delete(F filter, DataStoreContext context) Deletes all persistent objects matching the given filter.
boolean	delete(Id<T,I> id, DataStoreContext context) Deletes the persistent object with the given id.
void	delete(P storable, DataStoreContext context) Deletes a persistent object.
long	deleteAll(DataStoreContext context) Deletes all the persistent objects.
P	update(T transportable, DataStoreContext context) Updates the persistent object related to the given transport object.

Methods inherited from interface com.h3c.util.dao.BaseDao

count, find, find, findAll, get

Methods inherited from interface com.h3c.util.Converter

convert

Method Detail

create

P create(T transportable,
       DataStoreContext context)

Creates a new persistent object with the data from the given transport object.

Parameters:

transportable - transport object to get the data from

context - data store context

Returns:

the new created persistent object

update

P update(T transportable,
       DataStoreContext context)

Updates the persistent object related to the given transport object.

Parameters:

transportable - transport object to get the data from

context - data store context

Returns:

the updated persistent object

delete

void delete(P storable,
          DataStoreContext context)

Deletes a persistent object.

Concrete classes could override this method to do any pre-processing / post-processing work.

Parameters:

storable - the persistent object to delete

context - data store context

delete

boolean delete(Id<T,I> id,
             DataStoreContext context)

Deletes the persistent object with the given id.

Parameters:

id - persistent object's id

context - data store context

Returns:

true if the persistent object was found and deleted, false if it was not found

delete

long delete(F filter,
          DataStoreContext context)

Deletes all persistent objects matching the given filter.

Parameters:

filter - filter

context - data store context

Returns:

number of deleted objects

deleteAll

long deleteAll(DataStoreContext context)

Deletes all the persistent objects.

Parameters:

context - data store context

Returns:

the count of entries deleted