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Running JPA Queries

The Query interface defines two methods for running SELECT queries: Query. getSingleResult ... other case. Similarly, the TypedQuery interface defines the following methods: TypedQuery. getSingleResult ... Country instances would be more efficient. Single Result Query Execution (with getSingleResult

StoredProcedureQuery.getSingleResult() - JPA Method

JPA Method in javax.persistence.StoredProcedureQuery Object getSingleResult () Retrieve a single result from the next result set. The provider will call execute on the query if needed. A REF_CURSOR result set, if any, will be retrieved in the order the REF_CURSOR parameter was registered

Query.getSingleResult() - JPA Method

JPA Method in javax.persistence.Query Object getSingleResult () Execute a SELECT query that returns a single untyped result. Return: the result Throws: NoResultException - if there is no result NonUniqueResultException - if more than one result IllegalStateException - if called for a Java

TypedQuery.getSingleResult() - JPA Method

JPA Method in javax.persistence.TypedQuery X getSingleResult () Execute a SELECT query that returns a single result. Return: the result Throws: NoResultException - if there is no result NonUniqueResultException - if more than one result IllegalStateException - if called for a Java Persistence

_PersistenceException: Type is not found on getSingleResult.

_PersistenceException: Type is not found on getSingleResult.

Query Parameters in JPA

). getSingleResult (); } The WHERE clause reduces the query results to Country objects whose name field value ... ), so invocation of getSingleResult can be chained to the same expression. Named parameters can be easily ... WHERE c.name = ?1", Country.class); return query. setParameter (1, name). getSingleResult

Online Backup

; em.createQuery("objectdb backup"). getSingleResult (); The backup query string is always exactly ... . getSingleResult (); The code above, for instance, could create a backup at  c:\backup ... backup"); backupQuery.setParameter("target", "backup"); backupQuery. getSingleResult (); When a string

Setting and Tuning of JPA Queries

The  Query and  TypedQuery interfaces define various setting and tuning methods that may affect query execution if invoked before a query is run using getResultList or getSingleResult . Result Range (setFirstResult, setMaxResults) The setFirstResult and  setMaxResults methods enable

Duplicate Entity class names causes Exception in Query

. getSingleResult (JpaQuery.java:664) at objdbTest.Singleton.findItem(Singleton.java:62) at objdbTest ... ) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:657) ... 64 more Here is the class doing ... .setParameter("cachedKey", Integer.toString(which)); try { return q. getSingleResult (); } catch

Error 363 - Failed to read value of inverse relationship

.receivedMessages using reflection (error 363) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:723 ... .objectdb.o.QRR.b(QRR.java:187) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:716) ... 31 ... .setParameter("name", name). getSingleResult (); } catch (PersistenceException ex) { ex.printStackTrace

com.objectdb.o.NLV cannot be cast to com.objectdb.o.CMV

.RecordingMetaDataDAO. getSingleResult (RecordingMetaDataDAO.java:958)        ... .RecordingService. getSingleResult (RecordingService.java:384)        ... ; at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:723)      

Criteria Query results in a NoResultException instead of returning object

()])); return em.createQuery(criteria). getSingleResult (); which evaluates to the query: SELECT $1 FROM ... .objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:620) at org.jboss.seam.security.management.picketlink ... = em.createQuery(queryStr) .setParameter("identityObjectName", obj.getName()) . getSingleResult

javax.persistence.NonUniqueResultException

. getSingleResult () or TypedQuery. getSingleResult () is executed on a query and there is more than one result ... , to be marked for rollback. See Also: Query. getSingleResult () TypedQuery. getSingleResult () Since: JPA 1.0

javax.persistence.NoResultException

; javax.persistence.NoResultException Thrown by the persistence provider when Query. getSingleResult () or TypedQuery. getSingleResult () is executed on a query and there is no result to return. This exception ... . See Also: Query. getSingleResult () TypedQuery. getSingleResult () Since: JPA 1.0 Public Constructors

javax.persistence.StoredProcedureQuery

have been defined by the stored procedure. When getResultList and getSingleResult are called ... processing getResultList or getSingleResult . When executeUpdate is called on a StoredProcedureQuery ... getResultList or getSingleResult . The hasMoreResults method can then be used to test for further results

Mismatch client-server protocol prefix

;      result = (TrackerUser) q. getSingleResult ();       ... ; result = q. getSingleResult ();         } catch (Throwable ex ... ; This exception gets thrown at the getSingleResult line: java.lang.ClassCastException: at.co.pjm.tracker

Catching exceptions from online backup

the following solution: Thread backupThread = backupQuery . getSingleResult ( ) ; backupThread ... accessible via some API or the  TypedQuery. getSingleResult () would accept a parameter of type ... ; Thread backupThread = backupQuery . getSingleResult ( ) ; // TODO: Complete initializing the thread

JPA - ExceptionInInitializerError when creating EntityManager

.setParameter("name", "SMTP"). getSingleResult (); port = emailSettings.setParameter("name", "Port"). getSingleResult (); from = emailSettings.setParameter("name", "EMAILFROM"). getSingleResult ... (1). getSingleResult ();            

Online backup problem

; Thread backupThread = backupQuery. getSingleResult ();    backupThread.join();   } catch ... .createQuery("objectdb backup");   query. getSingleResult ();     em.close();   emf.close ... ;query. getSingleResult (); or the new build (2.2.7_07) that should fix it. Thank you for this report

zip file or JAR manifest missing

(error 301) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:620) at src.run.txt2db.lookup ... .objectdb.o.QRR.b(QRR.java:143) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:613) ... 2 ... ); q2.setParameter(2, sName); ItemList item = null; try { item = (ItemList)q2. getSingleResult

how to query by properties of onetomany relations? (Error 990)

.QRR.b(QRR.java:143) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:610)   f.bars ... ;     System.out.println("Count: " + query. getSingleResult ());     ... .JpaQuery. getSingleResult (JpaQuery.java:620) The query hint is set in the code

Tutorial issue

) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:754) at tutorial.Main.main(Main.java:29 ... .java:153) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:747) ... 1 more  

License Activation Change and Checking Activation

", boolean.class). getSingleResult (); support Support This query always returns false in my case ... .JpaQuery. getSingleResult (JpaQuery.java:747) mosi0815 Ralph Moser Sorry, hopefully build 2.5.5_03 should work fine. support Support

Cast exception?

.createNamedQuery("Player.getPlayer", Player.class); Player player = query.setParameter("id", uid). getSingleResult ... . getSingleResult (); Without any error. So the only error occurring is the casting, which doesn't

New to Product & Having An Issue

", Department.class); q.setParameter("id", this.departmentId); Department d = q. getSingleResult ... . getSingleResult (); assertNotNull(d); assertNotNull(d.getDomainId()); assertEquals(this.departmentId, d.getDomainId

Potential ObjectDB bug

.JpaQuery. getSingleResult (JpaQuery.java:757) [objectdb.jar:] at com.example.dao.TvrtkaDAO ... .objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:757) [objectdb.jar:] at com.example.dao.TvrtkaDAO

Date field Index is corrupted due to time change

) q. getSingleResult ();         em.getTransaction().commit ... . getSingleResult ();         em.getTransaction().commit();    

Bulk Delete and Update - best practice?

.createQuery("SELECT COUNT(d) from CacheData d", Long.class); long rows = q. getSingleResult ... .createEntityManager(); q = em.createQuery("SELECT COUNT(d) from CacheData d", Long.class); rows = q. getSingleResult

TYPE Expression

.OBC.onObjectDBError(OBC.java:1485) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:702 ... (QRR.java:230) at com.objectdb.o.QRR.b(QRR.java:151) at com.objectdb.jpa.JpaQuery. getSingleResult

Visibility of changes in Transaction is not visible to a JPA QL Query

; return q. getSingleResult ();   } catch (javax.persistence.NoResultException ex) {    ... ", Integer.toString(which));   return q. getSingleResult ();  

Problem upgrading

] at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:757) ~[objectdb-2.6.6.jar:na] ... 120 ... (QRR.java:222) ~[objectdb-2.6.6.jar:na] at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java

Remove a modified entity cause an optimistic lock exception

.createQuery("select m from MyEntity m"). getSingleResult ();         e ... from MyEntity m"). getSingleResult ();         em.remove(e);  

ArrayIndexOutOfBoundsException

;    at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:696) After the first time ... ;  at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:696)   I'm afraid I can't

Object comparation never matches

", authentication.getPrincipal()). getSingleResult (); According to ObjectDB explorer, the record is stored as ... )"  on getSingleResult PhoneNumber contains exactly 2 fields. So I'm sure that both objects are same

Merge Issue: Attempt to reuse an existing primary key value

A a", A.class). getSingleResult ();         Assert.assertEquals(1, a.list ... ("select a from A a", A.class). getSingleResult ();         Assert

Left join fetch behaviour doesn't retrieve children?

; MyEntity myEntity = query. getSingleResult ();            ... ; MyEntity.class);   MyEntity myEntity = query. getSingleResult ();   // Ok my em is now closed

javax.persistence.Query

getSingleResult () Execute a SELECT query that returns a single untyped result. Return: the result Throws

javax.persistence.TypedQuery

back See Also: Stream getResultList () Since: JPA 2.2 X getSingleResult () Execute a SELECT query

Disable Evaluation possibility

activation", boolean.class). getSingleResult (); Then you can avoid using ObjectDB and generate

CriteriaQuery .where() for multiple conditions

)); criteriaQuery.where(criteria); person = em.createQuery(criteriaQuery). getSingleResult (); em.getTransaction

combined index not used

statistics", Thread.class). getSingleResult (); thread.join(); em.close(); emf.close ... = entityManager .createQuery("objectdb statistics", Thread. class ). getSingleResult ();    ... .createQuery("objectdb statistics", Thread.class). getSingleResult (); thread.join(); em.close(); emf.close

Unexpected exception when execute query without enhanced entities

.QRR.i(QRR.java:154) at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:760) I would expect ... .o.OBC.onObjectDBError(OBC.java:1591) ~[na:na] at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery ... ] at com.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:760) ~[na:na] ... 28 common frames omitted

Issue with cascade delete & add/remove

;         .setMaxResults(1). getSingleResult ();     ... ;           . getSingleResult ()).intValue();   ... '")             . getSingleResult ()).intValue

Online Backup degrades responsiveness.

.createQuery("objectdb backup", Thread.class); Thread backupThread = backupQuery. getSingleResult ... = em.createQuery("objectdb backup", Thread.class); Thread backupThread = backupQuery. getSingleResult ... for x ms every 1MB Thread backupThread = backupQuery. getSingleResult (); backupThread.join

Server crash - Mismatch client-server protocol prefix

Mismatch client-server protocol prefix (error 523) at com.objectdb.jpa.JpaQuery. getSingleResult ... .objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:716) ... 27 more   I realize this isn't a lot

UPDATE statemen crash when i put the WHERE clause.

)).setParameter( "curs" , "Programare avansata" ). getSingleResult () ; lab_points = lab_points + Integer ... )).setParameter( "curs" , "Programare avansata" ). getSingleResult ()) ; } if (updateEm.getTransaction

Issues with JDO Casting & Full Qualified Names

= '123'";   System.out.println("4: " + em.createQuery(query). getSingleResult ());   em.close ... ; System.out.println("4: " + em.createQuery(query). getSingleResult ());      

ObjectDB can't be activated

activation", boolean.class). getSingleResult ()); Result is " false ". Also when trying to create ... System.out.println(emf.createEntityManager().createQuery("objectdb activation", boolean.class). getSingleResult

Unexpected error when loading all entity instance

.objectdb.jpa.JpaQuery. getSingleResult (JpaQuery.java:750) at com.querydsl.jpa.impl.AbstractJPAQuery. getSingleResult (AbstractJPAQuery.java:183) at com.querydsl.jpa.impl.AbstractJPAQuery.fetchOne

InternalException using 2.3.7_12

. getSingleResult (JpaQuery.java:716) at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) at sun ... $DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:310) at $Proxy56. getSingleResult (Unknown