org.springframework.orm.jpa
Interface JpaOperations

All Known Implementing Classes:

JpaTemplate

public interface JpaOperations

Interface that specifies a basic set of JPA operations, implemented by JpaTemplate. Not often used, but a useful option to enhance testability, as it can easily be mocked or stubbed.

Defines JpaTemplate's data access methods that mirror various EntityManager methods. Users are strongly encouraged to read the JPA EntityManager javadocs for details on the semantics of those methods.

Note that lazy loading will just work with an open JPA EntityManager, either within a managed transaction or within OpenEntityManagerInViewFilter/ OpenEntityManagerInViewInterceptor. Furthermore, some operations just make sense within transactions, for example: flush, clear.

Since:

2.0

Author:

Juergen Hoeller

See Also:

JpaTemplate, EntityManager, JpaTransactionManager, JpaDialect, OpenEntityManagerInViewFilter, OpenEntityManagerInViewInterceptor

Method Summary

boolean	contains(Object entity)
<T> T	execute(JpaCallback<T> action)
List	executeFind(JpaCallback<?> action)
<T> T	find(Class<T> entityClass, Object id)
List	find(String queryString)
List	find(String queryString, Object... values)
List	findByNamedParams(String queryString, Map<String,?> params)
List	findByNamedQuery(String queryName)
List	findByNamedQuery(String queryName, Object... values)
List	findByNamedQueryAndNamedParams(String queryName, Map<String,?> params)
void	flush()
<T> T	getReference(Class<T> entityClass, Object id)
<T> T	merge(T entity)
void	persist(Object entity)
void	refresh(Object entity)
void	remove(Object entity)

Method Detail

execute

<T> T execute(JpaCallback<T> action)
          throws DataAccessException

Throws:

DataAccessException

executeFind

List executeFind(JpaCallback<?> action)
                 throws DataAccessException

Throws:

DataAccessException

find

<T> T find(Class<T> entityClass,
           Object id)
       throws DataAccessException

Throws:

DataAccessException

getReference

<T> T getReference(Class<T> entityClass,
                   Object id)
               throws DataAccessException

Throws:

DataAccessException

contains

boolean contains(Object entity)
                 throws DataAccessException

Throws:

DataAccessException

refresh

void refresh(Object entity)
             throws DataAccessException

Throws:

DataAccessException

persist

void persist(Object entity)
             throws DataAccessException

Throws:

DataAccessException

merge

<T> T merge(T entity)
        throws DataAccessException

Throws:

DataAccessException

remove

void remove(Object entity)
            throws DataAccessException

Throws:

DataAccessException

flush

void flush()
           throws DataAccessException

Throws:

DataAccessException

find

List find(String queryString)
          throws DataAccessException

Throws:

DataAccessException

find

List find(String queryString,
          Object... values)
          throws DataAccessException

Throws:

DataAccessException

findByNamedParams

List findByNamedParams(String queryString,
                       Map<String,?> params)
                       throws DataAccessException

Throws:

DataAccessException

findByNamedQuery

List findByNamedQuery(String queryName)
                      throws DataAccessException

Throws:

DataAccessException

findByNamedQuery

List findByNamedQuery(String queryName,
                      Object... values)
                      throws DataAccessException

Throws:

DataAccessException

findByNamedQueryAndNamedParams

List findByNamedQueryAndNamedParams(String queryName,
                                    Map<String,?> params)
                                    throws DataAccessException

Throws:

DataAccessException