JPA 2.1 - Невозможно вызвать функцию Oracle

Question

Я не могу вызвать функцию Oracle через JPA 2.1. Однако одна и та же функция отлично работает с JDBC CallableStatement.

У меня есть определение ниже в моем классе Entity.

@NamedNativeQuery(name = "getAllAirlinesNQ", 
    query = "{? = call pkg_airlines.get_airlines()}", resultClass = Airline.class, 
    hints = { @QueryHint(name = "org.hibernate.callable", value = "true") }) 

И в моей DAO я вызываю функцию оракула, как это,

EntityManager entityManager = entityManagerFactory.createEntityManager(); 

    Query query = entityManager.createNativeQuery("getAllAirlinesNQ"); 
    List<Airline> airlines = query.getResultList(); 
    return airlines; 

Oracle функция:

FUNCTION get_airlines RETURN SYS_REFCURSOR 
    IS 
    O_CURSOR SYS_REFCURSOR; 

    BEGIN 
     OPEN O_CURSOR for SELECT 
     A1.ID ID, 
     A1.NAME NAME, 
     A1.ALIAS ALIAS, 
     A1.IATA IATA, 
     A1.ICAO ICAO, 
     A1.CALL_SIGN CALL_SIGN, 
     A1.COUNTRY_CODE COUNTRY_CODE 
     FROM AIRLINES A1; 
    RETURN O_CURSOR; 
    END get_airlines; 

Я получаю эту ошибку,

 javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not extract ResultSet 
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763) 
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677) 
    at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:458) 
    at com.jai.entity.dao.AirlineDao.getAllAirlinesNQFn(AirlineDao.java:141) 
    at com.jai.entity.dao.AirlineDaoTest.testgetAirlinesFn(AirlineDaoTest.java:117) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) 
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 
    at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:168) 
    at org.junit.rules.RunRules.evaluate(RunRules.java:20) 
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) 
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 
Caused by: org.hibernate.exception.SQLGrammarException: could not extract ResultSet 
    at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80) 
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91) 
    at org.hibernate.loader.Loader.getResultSet(Loader.java:2066) 
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863) 
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839) 
    at org.hibernate.loader.Loader.doQuery(Loader.java:910) 
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355) 
    at org.hibernate.loader.Loader.doList(Loader.java:2554) 
    at org.hibernate.loader.Loader.doList(Loader.java:2540) 
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370) 
    at org.hibernate.loader.Loader.list(Loader.java:2365) 
    at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:353) 
    at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:1909) 
    at org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:311) 
    at org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:141) 
    at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:573) 
    at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:449) 
    ... 31 more 
Caused by: java.sql.SQLSyntaxErrorException: ORA-00900: invalid SQL statement 

    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) 
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) 
    at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1017) 
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:655) 
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:249) 
    at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:566) 
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:215) 
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:58) 
    at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:943) 
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1075) 
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3820) 
    at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3867) 
    at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1502) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82) 
    ... 46 more 

Answer 1

Вы используют неправильный метод для создания именованного запроса - вы должны использовать entityManager.createNamedQuery(), а не entityManager.createNativeQuery().