Java javax.persistence EntityManager fields, constructors, methods, implement or subclass

Introduction

In this page you can find the methods, fields and constructors for javax.persistence EntityManager.

The text is from its open source code.

Implementation

javax.persistence.EntityManager has the following implementations.
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Method

void	clear() Clear the persistence context, causing all managed entities to become detached.
void	close() Close an application-managed entity manager.
boolean	contains(Object entity) Check if the instance is a managed entity instance belonging to the current persistence context.
Query	createNamedQuery(String name) Create an instance of `Query` for executing a named query (in the Java Persistence query language or in native SQL).
TypedQuery	createNamedQuery(String name, Class resultClass) Create an instance of `TypedQuery` for executing a Java Persistence query language named query.
Query	createNativeQuery(String sqlString, Class resultClass) Create an instance of `Query` for executing a native SQL query.
Query	createNativeQuery(String sqlString, String resultSetMapping) Create an instance of `Query` for executing a native SQL query.
Query	createNativeQuery(String sqlString) Create an instance of `Query` for executing a native SQL statement, e.g., for update or delete.
TypedQuery	createQuery(String qlString, Class resultClass) Create an instance of `TypedQuery` for executing a Java Persistence query language statement.
Query	createQuery(String qlString) Create an instance of `Query` for executing a Java Persistence query language statement.
TypedQuery	createQuery(CriteriaQuery criteriaQuery) Create an instance of `TypedQuery` for executing a criteria query.
Query	createQuery(CriteriaUpdate updateQuery) Create an instance of `Query` for executing a criteria update query.
Query	createQuery(CriteriaDelete deleteQuery) Create an instance of `Query` for executing a criteria delete query.
void	detach(Object entity) Remove the given entity from the persistence context, causing a managed entity to become detached.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
T	find(Class entityClass, Object primaryKey) Find by primary key.
T	find(Class entityClass, Object primaryKey, Map properties) Find by primary key, using the specified properties.
T	find(Class entityClass, Object primaryKey, LockModeType lockMode) Find by primary key and lock.
void	flush() Synchronize the persistence context to the underlying database.
Class	getClass() Returns the runtime class of this Object .
CriteriaBuilder	getCriteriaBuilder() Return an instance of `CriteriaBuilder` for the creation of `CriteriaQuery` objects.
Object	getDelegate() Return the underlying provider object for the `EntityManager`, if available.
EntityManagerFactory	getEntityManagerFactory() Return the entity manager factory for the entity manager.
Metamodel	getMetamodel() Return an instance of `Metamodel` interface for access to the metamodel of the persistence unit.
T	getReference(Class entityClass, Object primaryKey) Get an instance, whose state may be lazily fetched.
EntityTransaction	getTransaction() Return the resource-level `EntityTransaction` object.
int	hashCode() Returns a hash code value for the object.
boolean	isJoinedToTransaction() Determine whether the entity manager is joined to the current transaction.
boolean	isOpen() Determine whether the entity manager is open.
void	joinTransaction() Indicate to the entity manager that a JTA transaction is active and join the persistence context to it.
void	lock(Object entity, LockModeType lockMode) Lock an entity instance that is contained in the persistence context with the specified lock mode type.
T	merge(T entity) Merge the state of the given entity into the current persistence context.
void	persist(Object entity) Make an instance managed and persistent.
void	refresh(Object entity) Refresh the state of the instance from the database, overwriting changes made to the entity, if any.
void	refresh(Object entity, Map properties) Refresh the state of the instance from the database, using the specified properties, and overwriting changes made to the entity, if any.
void	refresh(Object entity, LockModeType lockMode) Refresh the state of the instance from the database, overwriting changes made to the entity, if any, and lock it with respect to given lock mode type.
void	remove(Object entity) Remove the entity instance.
void	setFlushMode(FlushModeType flushMode) Set the flush mode that applies to all objects contained in the persistence context.
void	setProperty(String propertyName, Object value) Set an entity manager property or hint.
String	toString() Returns a string representation of the object.
T	unwrap(Class cls) Return an object of the specified type to allow access to the provider-specific API.