org.springframework.orm.jpa.JpaOperations Maven / Gradle / Ivy
/*
* Copyright 2002-2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.orm.jpa;
import java.util.List;
import java.util.Map;
import org.springframework.dao.DataAccessException;
/**
* Interface that specifies a basic set of JPA operations,
* implemented by {@link 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 {@link javax.persistence.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
* {@link org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter}/
* {@link org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor}.
* Furthermore, some operations just make sense within transactions,
* for example: flush
, clear
.
*
* @author Juergen Hoeller
* @since 2.0
* @see JpaTemplate
* @see javax.persistence.EntityManager
* @see JpaTransactionManager
* @see JpaDialect
* @see org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
* @see org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor
*/
public interface JpaOperations {
T execute(JpaCallback action) throws DataAccessException;
List executeFind(JpaCallback action) throws DataAccessException;
T find(Class entityClass, Object id) throws DataAccessException;
T getReference(Class entityClass, Object id) throws DataAccessException;
boolean contains(Object entity) throws DataAccessException;
void refresh(Object entity) throws DataAccessException;
void persist(Object entity) throws DataAccessException;
T merge(T entity) throws DataAccessException;
void remove(Object entity) throws DataAccessException;
void flush() throws DataAccessException;
List find(String queryString) throws DataAccessException;
List find(String queryString, Object... values) throws DataAccessException;
List findByNamedParams(String queryString, Map params) throws DataAccessException;
List findByNamedQuery(String queryName) throws DataAccessException;
List findByNamedQuery(String queryName, Object... values) throws DataAccessException;
List findByNamedQueryAndNamedParams(String queryName, Map params) throws DataAccessException;
}