 57 | Method javax.persistence.EntityManager T find( Class entityClass, Object primaryKey ) Find by primary key. Search for an entity of the specified class and primary key. If the entity instance is contained in the persistence context, it is returned from there. Parameters: entityClass - entity |
57 | Method 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 to the specified lock type. If the entity instance is contained in |
57 | Method javax.persistence.EntityManager T find( Class entityClass, Object primaryKey, LockModeType lockMode, Map properties ) Find by primary key and lock, using the specified properties. Search for an entity of the specified class and primary key and lock it with respect |
57 | Method javax.persistence.EntityManager T find( Class entityClass, Object primaryKey, LockModeType lockMode, Map properties ) Find by primary key and lock, using the specified properties. Search for an entity of the specified class and primary key and lock it with respect |
57 | Method javax.persistence.EntityManager T find( Class entityClass, Object primaryKey, Map properties ) Find by primary key, using the specified properties. Search for an entity of the specified class and primary key. If the entity instance is contained in the persistence |
22 | , why? Result:
===========
find time @ 24.125000
getSons time @ 0.000000
1 : type:Nodes, sons:2
child : 2
child : 3
Iterator time @ 0.000000
find time @ 0.000000
getSons time @ 0.000000
2 : type:Nodes, sons:2
child : 4
child : 5
Iterator time @ 0.000000
find time @ 0.000000
getSons |
20 | use find method mentioning SentenceStatement everything works just fine but when I use this method ... for a better ease this is the stack trace when I try to find LogicalObject:
08:17:21,359 INFO ... -8080-1) JBAS014101: Failed to find SFSB instance with session ID {[-48, -118, 126, 59, 2, -122, 72 |
20 | "find" method. If nothing is returned from the db the passed object is persisted to the db. I have 5 ... somewhere in the find. The thread dump looks like:
Name: DEV1-WSAgent-1-Existing/3
State: RUNNABLE
Total ... .find(EMImpl.java:551)
- locked com.objectdb.jdo.PMImpl@ae89a
com.objectdb.jpa.EMImpl.find |
20 | (o); trans.commit();} 2, for 1 to 30 {p = em.find(typeC.class, i); print(p)} So simple a test ... cache? I'm not sure. But why the second find() will output? By the way, a query "select e from nodes e ... = em.find(typeC.class, i); // this p will be null I'm doubting the example in jpab.jar runs twice |
20 | )
at com.objectdb.jpa.EMImpl.find(EMImpl.java:591)
at com.objectdb.jpa.EMImpl.find(EMImpl.java:514 ... $SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
at $Proxy33.find(Unknown Source)
at local.jpa ... during find. What entity key type is used in that find? Is it String? What is the length of these strings |