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getLockMode(entity) - JPA EntityManager's method

LockModeType getLockMode(
  Object entity

Get the current lock mode for the entity instance.
entity - entity instance
lock mode
TransactionRequiredException - if there is no transaction
IllegalArgumentException - if the instance is not a managed entity and a transaction is active
JPA 2.0

This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
ObjectDB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.