javax.persistence.RollbackException: Error while committing the transaction in Eclipse - jpa

Question

I'm trying to create an application in JPA using Eclipse . the UML model of the application is the following :
enter image description here
And I have the error in class called "GRADETEST.java" in the function shouldSaveGrade() .
In this function I create variable grade final var grade = Fixtures.createGrade(subject).
before doing this I initialize a variable called subject which is fictitious . So when I do Junit test it crashes at the line
"entityManager.getTransaction().commit();"
I send to you Grade , subject , GRADETEST ,SubjectTest classes .
I'm new in this domain so I don't know why does this error appears .
javax.persistence.RollbackException: Error while committing the transaction
at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:81)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104)
at fr.uga.im2ag.l3.miage.db.repository.GradeTest.shouldSaveGrade(GradeTest.java:51)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:95)
at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:91)
at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:60)
at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:98)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:65)
... 71 more
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:59)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200)
at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3375)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3908)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:107)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)
at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478)
at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1402)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:493)
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3285)
at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2420)
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101)
... 70 more
Caused by: org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: Intégrité référentielle violation de contrainte: "FKEP37YMUXQE45LFAYSRIMBRS2A: PUBLIC.GRADE FOREIGN KEY(SUBJECT_ID) REFERENCES PUBLIC.SUBJECT(ID) (CAST(1 AS BIGINT))"
Referential integrity constraint violation: "FKEP37YMUXQE45LFAYSRIMBRS2A: PUBLIC.GRADE FOREIGN KEY(SUBJECT_ID) REFERENCES PUBLIC.SUBJECT(ID) (CAST(1 AS BIGINT))"; SQL statement:
insert into Grade (subject_id, gradevalue, weight, id) values (?, ?, ?, ?) [23506-210]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:527)
at org.h2.message.DbException.getJdbcSQLException(DbException.java:496)
at org.h2.message.DbException.get(DbException.java:227)
at org.h2.message.DbException.get(DbException.java:203)
at org.h2.constraint.ConstraintReferential.checkRowOwnTable(ConstraintReferential.java:311)
at org.h2.constraint.ConstraintReferential.checkRow(ConstraintReferential.java:252)
at org.h2.table.Table.fireConstraints(Table.java:1177)
at org.h2.table.Table.fireAfterRow(Table.java:1195)
at org.h2.command.dml.Insert.insertRows(Insert.java:188)
at org.h2.command.dml.Insert.update(Insert.java:135)
at org.h2.command.dml.DataChangeStatement.update(DataChangeStatement.java:61)
at org.h2.command.CommandContainer.update(CommandContainer.java:174)
at org.h2.command.Command.executeUpdate(Command.java:252)
at org.h2.jdbc.JdbcPreparedStatement.executeUpdateInternal(JdbcPreparedStatement.java:209)
at org.h2.jdbc.JdbcPreparedStatement.executeUpdate(JdbcPreparedStatement.java:169)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197)
... 90 more
//GradeTEST
package fr.uga.im2ag.l3.miage.db.repository;
import java.sql.Date;
import java.time.LocalDate;
import fr.uga.im2ag.l3.miage.db.repository.api.GradeRepository;
import fr.uga.im2ag.l3.miage.db.repository.api.SubjectRepository;
import fr.uga.im2ag.l3.miage.db.model.*;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
class GradeTest extends Base {
GradeRepository gradeRepository;
#BeforeEach
void before() {
gradeRepository = daoFactory.newGradeRepository(entityManager);
}
#AfterEach
void after() {
if (entityManager.getTransaction().isActive()) {
entityManager.getTransaction().rollback();
}
}
#Test
void shouldSaveGrade() {
// TODO
final var subject = Fixtures.createSubject();
subject.setId((long)1);
subject.setName("Math");
subject.setHours((float) 5.0);
// Create a date object
Date d = new Date(2022,2,28);
subject.setStart(d);
subject.setPoints(5);
subject.setEnd(d);
final var grade = Fixtures.createGrade(subject) ;
entityManager.getTransaction().begin();
gradeRepository.save(grade);
entityManager.getTransaction().commit();
entityManager.detach(grade);
var pGrade = gradeRepository.findById(grade.getId());
assertThat(pGrade).isNotNull().isNotSameAs(grade);
assertThat(pGrade.getValue()).isEqualTo(grade.getValue());
assertThat(pGrade.getWeight()).isEqualTo(grade.getWeight());
}
//Grade
package fr.uga.im2ag.l3.miage.db.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
#Entity
//#Table(name="Grade")
// TODO ajouter une named query pour une des requêtes à faire dans le repository
public class Grade {
#Id
#GeneratedValue()
#Column(name = "id")
private Long id;
#ManyToOne
private Subject subject;
#Column(name = "gradevalue")
private Float value;
private Float weight;
public Long getId() {
return id;
}
public Subject getSubject() {
return subject;
}
public Grade setSubject(Subject subject) {
this.subject = subject;
return this;
}
public Float getValue() {
return value;
}
public Grade setValue(Float value) {
this.value = value;
return this;
}
public Float getWeight() {
return weight;
}
public Grade setWeight(Float weight) {
this.weight = weight;
return this;
}
}
//Subject
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import java.util.Date;
#Entity
#Table(name = "Subject")
// TODO ajouter une named query pour une des requêtes à faire dans le repository
public class Subject {
#Id
#GeneratedValue()
#Column(name = "id",nullable=false)
private Long id;
private String name;
private Integer points;
private Float hours;
private Date start;
#Column(name = "end_date")
private Date end;
public Long getId() {
return id;
}
public Subject setId(Long id) {
this.id = id;
return this;
}
public String getName() {
return name;
}
public Subject setName(String name) {
this.name = name;
return this;
}
public Integer getPoints() {
return points;
}
public Subject setPoints(Integer points) {
this.points = points;
return this;
}
public Float getHours() {
return hours;
}
public Subject setHours(Float hours) {
this.hours = hours;
return this;
}
public Date getStart() {
return start;
}
public Subject setStart(Date start) {
this.start = start;
return this;
}
public Date getEnd() {
return end;
}
public Subject setEnd(Date end) {
this.end = end;
return this;
}
}

Answer 1

Referential integrity constraint violation: "FKEP37YMUXQE45LFAYSRIMBRS2A: PUBLIC.GRADE FOREIGN KEY(SUBJECT_ID) REFERENCES PUBLIC.SUBJECT(ID) (CAST(1 AS BIGINT))"; SQL statement: insert into Grade (subject_id, gradevalue, weight, id) values (?, ?, ?, ?)
Here Grade is dependent on Subject
and you're trying to save Grade without saving Subject
It'll work if you just save Subject
as Subject and Grade have a relation; it'll save Grade as well