Internal Website Search

explicitly by the lock method: em. lock (employee, LockModeType . PESSIMISTIC_WRITE ); The first ... , LockModeType . NONE ); Other Explicit Lock Modes In addition to the two main pessimistic modes ... ( Employee.class, 1, LockModeType . PESSIMISTIC_WRITE ); Similarly, the refresh method

JPA Enum LockModeType java.lang.Object ∟  java.lang.Enum ∟  javax.persistence. LockModeType Lock modes can be specified by means of passing a LockModeType argument to one of the javax ... pessimistic locks. Optimistic locks are specified using LockModeType .OPTIMISTIC and LockModeType

JPA Enum Constant in javax.persistence. LockModeType OPTIMISTIC_FORCE_INCREMENT Optimistic lock, with version update. Since: JPA 2.0

JPA Enum Constant in javax.persistence. LockModeType OPTIMISTIC Optimistic lock. Since: JPA 2.0

JPA Enum Constant in javax.persistence. LockModeType WRITE Synonymous with OPTIMISTIC_FORCE_INCREMENT . OPTIMISTIC_FORCE_IMCREMENT is to be preferred for new applications. Since: JPA 1.0

JPA Enum Constant in javax.persistence. LockModeType READ Synonymous with OPTIMISTIC . OPTIMISTIC is to be preferred for new applications. Since: JPA 1.0

JPA Enum Constant in javax.persistence. LockModeType PESSIMISTIC_FORCE_INCREMENT Pessimistic write lock, with version update. Since: JPA 2.0

JPA Enum Constant in javax.persistence. LockModeType NONE No lock. Since: JPA 2.0

JPA Enum Constant in javax.persistence. LockModeType PESSIMISTIC_WRITE Pessimistic write lock. Since: JPA 2.0

JPA Enum Constant in javax.persistence. LockModeType PESSIMISTIC_READ Pessimistic read lock. Since: JPA 2.0

( LockModeType . PESSIMISTIC_WRITE ) . getResultList (); Notice that when a query is executed

is null Since: JPA 1.0 T find (Class  entityClass, Object primaryKey,  LockModeType ... ,  LockModeType  lockMode, Map  properties) Find by primary key and lock, using ... LockModeType getLockMode (Object entity) Get the current lock mode for the entity instance

.getSelectedValue(),       LockModeType .PESSIMISTIC_WRITE); . . } //doEdit ... ; import javax.persistence.EntityManagerFactory; import javax.persistence. LockModeType ; import javax ... , LockModeType .PESSIMISTIC_WRITE);         System.out.println

JPA Annotation Attribute in javax.persistence.NamedQuery LockModeType lockMode default NONE (Optional) The lock mode type to use in query execution. If a lockMode other than LockModeType .NONE is specified, the query must be executed in a transaction and the persistence context joined to the transaction. Since: JPA 2.0

-specific query hints. Since: JPA 1.0 LockModeType lockMode default NONE (Optional) The lock mode type to use in query execution. If a lockMode other than LockModeType .NONE is specified, the query

LockModeType getLockMode () Get the current lock mode for the query. Returns null if a lock mode ... is not valid for the implementation Since: JPA 1.0 Query setLockMode ( LockModeType  lockMode

and hints Inherited from: Query Since: JPA 2.0 LockModeType getLockMode () Get the current lock mode ... for the implementation Since: JPA 2.0 TypedQuery setLockMode ( LockModeType  lockMode) Set the lock

Since: JPA 2.0 LockModeType getLockMode () Get the current lock mode for the query. Returns null ... ( LockModeType  lockMode) Set the lock mode type to be used for the query execution. Parameters: lockMode

.getTransaction().begin(); Account a1 = em1.find(Account.class, 0, LockModeType .PESSIMISTIC_WRITE); a1 ... ().begin(); Account a2 = em2.find(Account.class, 0, LockModeType .PESSIMISTIC_READ

JPA Method in javax.persistence.Query Query setLockMode (    LockModeType  lockMode ) Set the lock mode type to be used for the query execution. Parameters: lockMode - lock mode Return: the same query instance Throws: IllegalStateException - if the query is found not to be a Java

JPA Method in javax.persistence.Query LockModeType getLockMode () Get the current lock mode for the query. Returns null if a lock mode has not been set on the query object. Return: lock mode Throws: IllegalStateException - if the query is found not to be a Java Persistence query language SELECT query or a Criteria API query Since: JPA 2.0

JPA Method in javax.persistence.EntityManager void refresh (   Object entity,     LockModeType  lockMode,    Map  properties ) Refresh the state of the instance from the database, overwriting changes made to the entity, if any, and lock

JPA Method in javax.persistence.EntityManager LockModeType getLockMode (   Object entity ) Get the current lock mode for the entity instance. Parameters: entity - entity instance Return: lock mode Throws: TransactionRequiredException - if there is no transaction or if the entity

JPA Method in javax.persistence.EntityManager void lock (   Object entity,     LockModeType  lockMode,    Map  properties ) Lock an entity instance that is contained in the persistence context with the specified lock mode type

JPA Method in javax.persistence.EntityManager void lock (   Object entity,     LockModeType  lockMode ) Lock an entity instance that is contained in the persistence context with the specified lock mode type. If a pessimistic lock mode type is specified

JPA Method in javax.persistence.TypedQuery TypedQuery setLockMode (    LockModeType  lockMode ) Set the lock mode type to be used for the query execution. Parameters: lockMode - lock mode Return: the same query instance Throws: IllegalStateException - if the query is found not

JPA Method in javax.persistence.EntityManager 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

JPA Method in javax.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey,     LockModeType  lockMode ) Find by primary key and lock. Search for an entity of the specified class and primary key and lock it with respect

JPA Method in javax.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey,     LockModeType  lockMode,    Map  properties ) Find by primary key and lock, using the specified properties. Search

.CheckCacheThenDatabase); /* q.setLockMode( LockModeType .OPTIMISTIC); */ try { java.lang.Object r = q.getSingleResult

an exception in this case. support Support It would be great if was fixed the same problem with LockModeType

.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence. LockModeType ; import

of entity classes ( issue #672 ). Fixed LockModeType .OPTIMISTIC ( READ ) by handling it as OPTIMISTIC_FORCE_INCREMENT . Fixed a bug in optimistic locking on find by using LockModeType .WRITE . Fixed

  LockModeType .NONE. Fixed a bug in recovery from an exception during inverse (mapped-by) retrieval

.class, 1, LockModeType .PESSIMISTIC_WRITE, properties); One thread manages to do its update