org.springframework.data.jdbc.core

Class JdbcAggregateTemplate

java.lang.Object

org.springframework.data.jdbc.core.JdbcAggregateTemplate

All Implemented Interfaces:

JdbcAggregateOperations

public class JdbcAggregateTemplate
extends Object
implements JdbcAggregateOperations

JdbcAggregateOperations implementation, storing aggregates in and obtaining them from a JDBC data store.

Author:

Jens Schauder, Mark Paluch

Constructor Summary

Constructors

Constructor and Description
JdbcAggregateTemplate(ApplicationEventPublisher publisher, RelationalMappingContext context, RelationalConverter converter, DataAccessStrategy dataAccessStrategy) Creates a new JdbcAggregateTemplate given ApplicationEventPublisher, RelationalMappingContext and DataAccessStrategy.

Method Summary

Modifier and Type	Method and Description
long	count(Class<?> domainType) Counts the number of aggregates of a given type.
<S> void	delete(S aggregateRoot, Class<S> domainType) Delete an aggregate identified by it's aggregate root.
void	deleteAll(Class<?> domainType) Delete all aggregates of a given type.
<S> void	deleteById(Object id, Class<S> domainType) Deletes a single Aggregate including all entities contained in that aggregate.
<T> boolean	existsById(Object id, Class<T> domainType) Checks if an aggregate identified by type and id exists in the database.
<T> Iterable<T>	findAll(Class<T> domainType) Load all aggregates of a given type.
<T> Iterable<T>	findAllById(Iterable<?> ids, Class<T> domainType) Load all aggregates of a given type that are identified by the given ids.
<T> T	findById(Object id, Class<T> domainType) Load an aggregate from the database.
<T> T	save(T instance) Saves an instance of an aggregate, including all the members of the aggregate.

Methods inherited from class java.lang.Object

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

Constructor Detail

JdbcAggregateTemplate

public JdbcAggregateTemplate(ApplicationEventPublisher publisher,
                             RelationalMappingContext context,
                             RelationalConverter converter,
                             DataAccessStrategy dataAccessStrategy)

Creates a new JdbcAggregateTemplate given ApplicationEventPublisher, RelationalMappingContext and DataAccessStrategy.

Parameters:

publisher - must not be null.

context - must not be null.

dataAccessStrategy - must not be null.

Method Detail

save

public <T> T save(T instance)

Description copied from interface: JdbcAggregateOperations

Saves an instance of an aggregate, including all the members of the aggregate.

Specified by:

save in interface JdbcAggregateOperations

Type Parameters:

T - the type of the aggregate root.

Parameters:

instance - the aggregate root of the aggregate to be saved. Must not be null.

Returns:

the saved instance.

count

public long count(Class<?> domainType)

Description copied from interface: JdbcAggregateOperations

Counts the number of aggregates of a given type.

Specified by:

count in interface JdbcAggregateOperations

Parameters:

domainType - the type of the aggregates to be counted.

Returns:

the number of instances stored in the database. Guaranteed to be not null.

findById

public <T> T findById(Object id,
                      Class<T> domainType)

Description copied from interface: JdbcAggregateOperations

Load an aggregate from the database.

Specified by:

findById in interface JdbcAggregateOperations

Type Parameters:

T - the type of the aggregate root.

Parameters:

id - the id of the aggregate to load. Must not be null.

domainType - the type of the aggregate root. Must not be null.

Returns:

the loaded aggregate. Might return null.

existsById

public <T> boolean existsById(Object id,
                              Class<T> domainType)

Description copied from interface: JdbcAggregateOperations

Checks if an aggregate identified by type and id exists in the database.

Specified by:

existsById in interface JdbcAggregateOperations

Type Parameters:

T - the type of the aggregate root.

Parameters:

id - the id of the aggregate root.

domainType - the type of the aggregate root.

Returns:

whether the aggregate exists.

findAll

public <T> Iterable<T> findAll(Class<T> domainType)

Description copied from interface: JdbcAggregateOperations

Load all aggregates of a given type.

Specified by:

findAll in interface JdbcAggregateOperations

Type Parameters:

T - the type of the aggregate roots. Must not be null.

Parameters:

domainType - the type of the aggregate roots. Must not be null.

Returns:

Guaranteed to be not null.

findAllById

public <T> Iterable<T> findAllById(Iterable<?> ids,
                                   Class<T> domainType)

Description copied from interface: JdbcAggregateOperations

Load all aggregates of a given type that are identified by the given ids.

Specified by:

findAllById in interface JdbcAggregateOperations

Type Parameters:

T - the type of the aggregate roots. Must not be null.

Parameters:

ids - of the aggregate roots identifying the aggregates to load. Must not be null.

domainType - the type of the aggregate roots. Must not be null.

Returns:

Guaranteed to be not null.

delete

public <S> void delete(S aggregateRoot,
                       Class<S> domainType)

Description copied from interface: JdbcAggregateOperations

Delete an aggregate identified by it's aggregate root.

Specified by:

delete in interface JdbcAggregateOperations

Type Parameters:

S - the type of the aggregate root.

Parameters:

aggregateRoot - to delete. Must not be null.

domainType - the type of the aggregate root. Must not be null.

deleteById

public <S> void deleteById(Object id,
                           Class<S> domainType)

Description copied from interface: JdbcAggregateOperations

Deletes a single Aggregate including all entities contained in that aggregate.

Specified by:

deleteById in interface JdbcAggregateOperations

Type Parameters:

S - the type of the aggregate root.

Parameters:

id - the id of the aggregate root of the aggregate to be deleted. Must not be null.

domainType - the type of the aggregate root.

deleteAll

public void deleteAll(Class<?> domainType)

Description copied from interface: JdbcAggregateOperations

Delete all aggregates of a given type.

Specified by:

deleteAll in interface JdbcAggregateOperations

Parameters:

domainType - type of the aggregate roots to be deleted. Must not be null.