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24

New to Product & Having An Issue

.createNamedQuery("Department.findByPK", Department.class); q.setParameter("id ... ;Department> q = em.createNamedQuery("Department.findByCmpPK", Department.class); q ... = em.createNamedQuery("Department.findAll", Department.class); q.setMaxResults(1000
12

Embedded List

Why does this NamedQuery only work sometimes? @NamedQuery(name = "ItemDB.getPartial", query = "SELECT i FROM com.model.ItemDB i JOIN i.lstSupplier s WHERE s.strSupNumber LIKE ?1") I use this to access it. TypedQuery<ItemDB> tqItem = emf.createEntityManager().createNamedQuery("ItemDB.getPart
12

Cast exception?

I'm getting a weird exception: java.lang.ClassCastException: database.entity.Player cannot be cast to database.entity.Player From just fetching a single result: TypedQuery<Player> query = em.createNamedQuery("Player.getPlayer", Player.class); Player player = query.setParameter("id", uid
12

Query can't see recently persisted object

; } ... } ... TypedQuery<MyObject> query = mem.createNamedQuery("MyObject.findByOid", MyObject.class); query
12

openejb jpa jaas module

.createNamedQuery("UserPrincipal.findAll", UserPrincipal.class); List<UserPrincipal
12

Conflicting modifiers .... (javax.persistence.Id, javax.persistence.ManyToOne)

; } public int getNumberOfMapItems(EntityManager em) { Query q = em .createNamedQuery
12

com.objectdb.o.InternalException: Unexpected internal exception

(Person.class); List pList = em.createNamedQuery("getPersonByName",Person.class).setParameter
12

Should derived fields of an EmbeddedId be manually maintained by app code?

getNumberOfMapItems(EntityManager em) { Query q = em .createNamedQuery("numberOfMapItems"); q
3

Named Query Exception

(EMImpl.java:920) at com.objectdb.jpa.EMImpl.createNamedQuery(EMImpl.java:850) at com.xxx.objectdb.ObjectDBRulesEngineDAOImpl.createNamedQuery(ObjectDBRulesEngineDAOImpl.java:258) at com.xxx
2

ObjectDB needs "insert ignore"

WHERE c.name = :stuName and c.sid=:stuID" ) then run createNamedQuery("isExistName"), judge

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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