Issue
I created a Dynamic Web Project with the JPA facet running on Tomcat 9.0.24. I have a single table, called profile, in my Prostgres 10.10 database and I have a single entity "Profile" that I am trying to persist. I am using Eclipse 4.12.0.
The profile table was created using pgAdmin 4 console and it's sequence exists.
Here is my code...
Maven POM:
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa</artifactId>
<version>2.7.4</version>
</dependency>
Profile entity:
package za.co.ezimax.entity;
import java.time.LocalDate;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity()
@Table(name = "profile")
public class Profile {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
@Column(name="first_name", nullable = false, length = 80)
private String firstName;
@Column(name="last_name", nullable = false, length = 80)
private String lastName;
@Column(name="birth_date", columnDefinition = "DATE", nullable = false)
private LocalDate birthDate;
@Column(name="sex", nullable = false)
private int sex;
@Column(name="mobile_mac", nullable = false)
private String mobileMac;
@Column(name="mobile_no", nullable = false, length = 12)
private String mobileNo;
@Column(name="registration_date", columnDefinition = "DATE", nullable = false)
private LocalDate registrationDate;
@Column(name="user_password", nullable = false, length = 80)
private char[] userPassword;
public Profile() {
}
}
Code to persist entity:
EntityManagerFactory emf = Persistence.createEntityManagerFactory("ezimax");
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
Profile profile = new Profile();
profile.setFirstName("Hendre");
profile.setLastName("Louw");
profile.setSex(1);
profile.setMobileMac("ff:ff:ff:ff:ff:ff:ff:ff");
profile.setMobileNo("+27832000000");
profile.setRegistrationDate(LocalDate.now());
profile.setUserPassword("password".toCharArray());
em.persist(profile);
em.getTransaction().commit();
em.close();
emf.close();
Here is the exception I am getting:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.7.4.v20190115-ad5b7c6b2a): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: relation "sequence" does not exist
Position: 8
Error Code: 0
Call: UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + ? WHERE SEQ_NAME = ?
bind => [50, SEQ_GEN]
Query: DataModifyQuery(name="SEQUENCE" sql="UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + ? WHERE SEQ_NAME = ?")
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:342)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.processExceptionForCommError(DatabaseAccessor.java:1650)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:906)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:970)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:640)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:567)
at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:2096)
at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:311)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:275)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:261)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeNoSelectCall(DatasourceCallQueryMechanism.java:304)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeNoSelect(DatasourceCallQueryMechanism.java:284)
at org.eclipse.persistence.queries.DataModifyQuery.executeDatabaseQuery(DataModifyQuery.java:87)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:914)
at org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:3349)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1895)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1877)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1842)
at org.eclipse.persistence.sequencing.QuerySequence.update(QuerySequence.java:356)
at org.eclipse.persistence.sequencing.QuerySequence.updateAndSelectSequence(QuerySequence.java:293)
at org.eclipse.persistence.sequencing.StandardSequence.getGeneratedVector(StandardSequence.java:75)
at org.eclipse.persistence.sequencing.DefaultSequence.getGeneratedVector(DefaultSequence.java:168)
at org.eclipse.persistence.sequencing.Sequence.getGeneratedVector(Sequence.java:267)
at org.eclipse.persistence.internal.sequencing.SequencingManager$Preallocation_Transaction_NoAccessor_State.getNextValue(SequencingManager.java:487)
at org.eclipse.persistence.internal.sequencing.SequencingManager.getNextValue(SequencingManager.java:1109)
at org.eclipse.persistence.internal.sequencing.ClientSessionSequencing.getNextValue(ClientSessionSequencing.java:72)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.assignSequenceNumber(ObjectBuilder.java:372)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.assignSequenceNumber(ObjectBuilder.java:331)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.assignSequenceNumber(UnitOfWorkImpl.java:532)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNotRegisteredNewObjectForPersist(UnitOfWorkImpl.java:4388)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.registerNotRegisteredNewObjectForPersist(RepeatableWriteUnitOfWork.java:523)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4333)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:596)
at za.co.ezimax.rest.Servlet.doGet(Servlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.postgresql.util.PSQLException: ERROR: relation "sequence" does not exist
Position: 8
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2468)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2211)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:309)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:446)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:370)
at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:149)
at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:124)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:898)
... 55 more
Solution
As you mentioned you want to use sequences with JPA.
So you have to use the GenerationType.SEQUENCE and configure the name of the sequence:
@Id
@GeneratedValue(
strategy = GenerationType.SEQUENCE,
generator = "sequence-generator"
)
@SequenceGenerator(
name = "sequence-generator",
sequenceName = "the_sequence_name"
)
private long id;
Replace the_sequence_name with the name of the sequence in PostgreSQL.
Answered By - Simon Martinelli
