Due the complexity of my dataBase, i decided create a new Object where I specifying just the parameters that I will to use. To do custom query I'm using createNativeQuery in JPA. Following my Object.
POJO:
@Entity
public class Unidade implements Serializable{
private static final long serialVersionUID = 1L;
private Long numeroUnidade;
private String nomeUnidade;
private Integer numeroCep;
private Integer numeroCepComplemento;
private String tipoServico;
private Integer status;
private String logradouro;
private String bairro;
private String cidade;
private String uf;
private Integer statusVinculo;
//getter and setters
Currently I'm using the following select to return the simple integer and works without show any problem.
@PersistenceContext(unitName="projetoAtividade")
private EntityManager em;
public void selectTeste(){
int quantidade = (Integer) em.createNativeQuery("select count(*) from abc.nattbu29_escritorio;").getSingleResult();
System.out.println("========== QUANTIDADE DE REGISTRO NA TABELA ===========");
System.out.println(quantidade);
}
Although the previous query worked fine, when a submit a complex query putting the respective alias, using too createNativeQuery and putting the object return, the hibernate throw a exception (org.hibernate.MappingException: Unknown).
Remembering that I create a new class putting @Entity specifying.
Query:
@SuppressWarnings("unchecked")
public List<UnidadeTeste> buscarUnidadeGenerica(int numeroCeps, int numeroComplementoCeps){
List<UnidadeTeste> lsita = new ArrayList<UnidadeTeste>();
String query = "SELECT "
+"TBZ21.NATURAL as numeroPv, "
+"TBZ21.UNIDADE as nomePv, "
+"TBZ21.SITUACAO as statusVinculacao, "
+"TBJ55.TPO_ATUACAO_U44 as tipoServAZW, "
+"TBJ55.SITUACAO_ATUAL as status, "
+"TBH18.LOCALIDADE as cidade, "
+"'' as bairro, "
+"'' as logradouro, "
+"TBH18.CEP as numeroCep, "
+"TBH18.CEP_COMPLEMENTO as numeroCepComplemento, "
+"TBH18.FK_AZWVWL22_UNISG as uf "
+"FROM AZW.AZWTBJ55_RGATUACAO TBJ55 "
+"LEFT JOIN AZW.AZWTBH18_LOCALIDADE TBH18 ON "
+"TBH18.LOCALIDADEE = TBJ55.LOCALIDADEE "
+"LEFT JOIN AZW.AZWTBZ21_UNIDADE TBZ21 ON "
+"TBJ55.NATURAL = TBZ21.NATURAL "
+"WHERE TBH18.CEP = ?1 "
+"AND TBH18.CEP_COMPLEMENTO = ?2; "
lsita = em.createNativeQuery(query, Unidade.class)
.setParameter(1, numeroCeps)
.setParameter(2, numeroComplementoCeps)
.getResultList();
System.out.println(lsita.size()+"<<<<=====================");
return lsita;
}
Error:
Caused by: org.hibernate.MappingException: Unknown entity: br.com.project.modelo.UnidadeTeste
at org.hibernate.internal.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:1031) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.getSQLLoadable(SQLQueryReturnProcessor.java:336) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processRootReturn(SQLQueryReturnProcessor.java:377) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processReturn(SQLQueryReturnProcessor.java:356) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.process(SQLQueryReturnProcessor.java:172) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.loader.custom.sql.SQLCustomQuery.<init>(SQLCustomQuery.java:87) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.engine.query.spi.NativeSQLQueryPlan.<init>(NativeSQLQueryPlan.java:67) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.engine.query.spi.QueryPlanCache.getNativeSQLQueryPlan(QueryPlanCache.java:155) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.internal.AbstractSessionImpl.getNativeSQLQueryPlan(AbstractSessionImpl.java:218) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:224) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:156) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:252) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
... 84 more
In my search through the internet, almost all forum topics was unanimous in the solution answer: " Put the @Entity before class declaration" but, it not works to me.
I had "spent" all my day trying looking for a solutions worked but, unfortunately, I not had successes. Someone can say a new way to solve my problem? I tested in 2 different project and hapens the same problem.
Question complement:
Folks, I tried create a @SqlResultSetMapping into my class, the coding following, but now, the hibernate trows the another exception:
ERROR [org.jboss.ejb3.invocation] (http--127.0.0.1-8888-2) JBAS014134: EJB Invocation failed on component AtividadeEJB for method public void br.com.project.jboss.modelo.AtividadeEJB.testeChamada(): javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.MappingException: Unknown SqlResultSetMapping [UnidadeResult]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:166) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:230) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:304) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:190) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
My new POJO:
@Entity
@SqlResultSetMapping(name="UnidadeResult",
entities={
@EntityResult(entityClass=UnidadeTeste.class, fields={
@FieldResult(name="tx_descricao", column="nomePv"),
@FieldResult(name="nu_idntr_pessoa", column="id")})},
columns={
@ColumnResult(name="nomePv")}
)
public class UnidadeTeste implements Serializable{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private Long id;
private String nomePv;
public String getNomePv() {
return nomePv;
}
public void setNomePv(String nomePv) {
this.nomePv = nomePv;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
My EJB:
@SuppressWarnings("unchecked")
public void testeChamada(){
List<Object> lista = em.createNativeQuery("SELECT nu_idntr_pessoa as id, email as nomePv FROM pessoa;", "UnidadeResult").getResultList();
System.out.println("===============>>"+lista.size());
}
if you want to return a native query's results to an object I would suggest using SqlResultSetMapping.
Otherwise, set your return type to:
List<Object[]> results = em.createNativeQuery(query)
.setParameter(1, numeroCeps)
.setParameter(2, numeroComplementoCeps)
.getResultList();
And then loop through the result list, and cast each member of the Object array to its data type.