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de.akquinet.jbosscc.needle.db.transaction.Runnable Maven / Gradle / Ivy
package de.akquinet.jbosscc.needle.db.transaction;
import javax.persistence.EntityManager;
/**
* Interface for passing algorithms to executeInTransaction().
*
* @param
* - return type of run()
*/
public interface Runnable {
/**
* Operation to be automatically called inside executeInTransaction().
*
* @param entityManager
* an {@link javax.persistence.EntityManager}
* @return return value of the operation
* @throws Exception
* thrown when something failed
*/
T run(EntityManager entityManager) throws Exception;
}
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