org.h2.jdbc.JdbcSQLException: NULL not allowed for column "ID"

Question

I've already tried doing some of the solutions found on the web none of them worked. I am using in-memory persistent hibernate database.

@Entity
@Table(name = "Users")
public class User implements Serializable {

    private String id;

    private String username;

    private String password;

    private String email;



    private Boolean enabled;


    private Event checkedInEvent;

    @Id
    @GeneratedValue(generator="uuid", strategy = GenerationType.AUTO)
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    @Column(name = "id", unique = true)
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    @Column(name = "username")
    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    @Column(name = "password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @PrePersist
    public void encryptPassword() throws Exception {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(password.getBytes());
        byte byteData[] = md.digest();
        //convert the byte to hex format method 1
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < byteData.length; i++) {
            sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
        }
        password = sb.toString();
    }

    @Column(name = "email")
    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }


    @Column(name = "enabled")
    public Boolean getEnabled() {
        return enabled;
    }

    public void setEnabled(Boolean enabled) {
        this.enabled = enabled;
    }

    @PostLoad
    public void postLoad()
    {
        password = null;
    }


    @ManyToOne(optional=true,cascade=CascadeType.ALL)
    @JoinTable
    (
        name="CheckedInUsers",
        joinColumns={ @JoinColumn(name="checkedInUsersId", referencedColumnName="id") },
        inverseJoinColumns={ @JoinColumn(name="checkedInEventsId", referencedColumnName="id") }
    )
    public Event getCheckedInEvent() {
        return checkedInEvent;
    }

    public void setCheckedInEvent(Event checkedInEvent) {
        this.checkedInEvent = checkedInEvent;
    }
}

Checked in User

@Entity
@Table(name = "CheckedInUsers")
public class CheckedInUsers {

    private String id;

    private String checkedInEventsId;

    private String checkedInUsersId;

    @Id
    @GeneratedValue(generator="uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    @Column(name = "id", unique = true)
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    @Column(name = "checkedInEventsId")
    public String getEvent() {
        return checkedInEventsId;
    }

    public void setEvent(String event) {
        this.checkedInEventsId = event;
    }

    @Column(name = "checkedInUsersId")
    public String getUser() {
        return checkedInUsersId;
    }

    public void setUser(String user) {
        this.checkedInUsersId = user;
    }
}

Event

@Entity
@Spatial(spatialMode = SpatialMode.GRID)
@Indexed
@Table(name = "Events")
public class Event {

    private String id;

    private String name;

    private Date startTime;

    private Venue venue;

    private Set<User> checkedInUsers;


    @Id
    @DocumentId
    @GeneratedValue(generator="uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    @Column(name = "id", unique = true)
    @Field(name = "id")
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    @Column(name = "name")
    @Field(name = "name")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Column(name = "starttime")
    @Temporal(TemporalType.TIMESTAMP)
    @Field(name = "starttime")
    public Date getStartTime() {
        return startTime;
    }

    public void setStartTime(Date startTime) {
        this.startTime = startTime;
    }


    @ManyToOne(optional=false,targetEntity = Venue.class)
    @JoinColumn(name="venueid",referencedColumnName="id")
    @JsonBackReference
    public Venue getVenue() {
        return venue;
    }

    @OneToMany(mappedBy = "checkedInEvent")
    @Fetch(FetchMode.JOIN)
    public Set<User> getCheckedInUsers() {
        return checkedInUsers;
    }

    public void setCheckedInUsers(Set<User> checkedInUsers) {
        this.checkedInUsers = checkedInUsers;
    }

    public void setVenue(Venue venue) {
        this.venue = venue;
    }

}

error

org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:259)
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:225)
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:521)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:485)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:131)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
    at com.sun.proxy.$Proxy110.save(Unknown Source)
    at Superior.TestCases.Config.TestDataSetup.setUpEastonEvents(TestDataSetup.java:130)
    at Superior.TestCases.Config.TestDataSetup.setUpVenues(TestDataSetup.java:81)
    at Superior.TestCases.Config.TestDataSetup.setUp(TestDataSetup.java:65)
    at Superior.TestCases.Tests.Models.TestAppManager.setup(TestAppManager.java:73)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:254)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
    at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:129)
    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.executeUpdate(ResultSetReturnImpl.java:211)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3127)
    at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:3190)
    at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3525)
    at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:159)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:465)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:351)
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:350)
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
    at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1258)
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425)
    at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
    at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
    at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:77)
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517)
    ... 46 common frames omitted
Caused by: org.h2.jdbc.JdbcSQLException: NULL not allowed for column "ID"; SQL statement:
insert into CheckedInUsers (checkedInEventsId, checkedInUsersId) values (?, ?) [23502-191]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
    at org.h2.message.DbException.get(DbException.java:179)
    at org.h2.message.DbException.get(DbException.java:155)
    at org.h2.table.Column.validateConvertUpdateSequence(Column.java:307)
    at org.h2.table.Table.validateConvertUpdateSequence(Table.java:779)
    at org.h2.command.dml.Insert.insertRows(Insert.java:151)
    at org.h2.command.dml.Insert.update(Insert.java:114)
    at org.h2.command.CommandContainer.update(CommandContainer.java:98)
    at org.h2.command.Command.executeUpdate(Command.java:258)
    at org.h2.jdbc.JdbcPreparedStatement.executeUpdateInternal(JdbcPreparedStatement.java:160)
    at org.h2.jdbc.JdbcPreparedStatement.executeUpdate(JdbcPreparedStatement.java:146)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)
    ... 60 common frames omitted

The data that will be persisted

    user = new User();
    user.setUsername("billTheTester");
    user.setEmail("[email protected]");
    user.setPassword("test123");
    user = daoManager.getUserRepo().save(user);
    this.testUserTwo = user;

    Calendar cal = Calendar.getInstance();
    Event event = new Event();
    event.setName("Hanging Out!");
    event.setVenue(venue);
    event.setStartTime(cal.getTime());
    event = daoManager.getEventRepo().save(event);
    testUserTwo.setCheckedInEvent(event);
    daoManager.getUserRepo().save(testUserTwo);

Datasource Configuration

package Superior.Config.DatabaseConfig;

import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.annotation.Order;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Properties;


@Configuration
@PropertySource({ "classpath:application.properties" })
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "Superior.Models",
        entityManagerFactoryRef = "prodEntityManager",
        transactionManagerRef = "transactionManager"
)
@Order(1)
public class PrimaryDatasourceConfig {

    @Autowired
    private Environment env;

    HashMap<String, Object> properties = new HashMap<String, Object>();

    @Bean(name = "prodDataSource")
    public DataSource prodDataSource() {
        Properties props = new Properties();
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setUrl(env.getProperty("hibernate.connection.url"));
//        dataSource.setUsername(env.getProperty("hibernate.username"));

        return dataSource;
    }

    @Primary
    @Bean(name = "prodEntityManager")
    public SuperiorLocalContainerEntityManagerFactoryBean prodEntityManager() {
        SuperiorLocalContainerEntityManagerFactoryBean em = new SuperiorLocalContainerEntityManagerFactoryBean();
        em.setDataSource(prodDataSource());
        em.setPackagesToScan(new String[]{"Superior.Models.Tables"});

        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        em.setJpaVendorAdapter(vendorAdapter);
        this.properties = new HashMap<String, Object>();
        properties.put("hibernate.dialect",
                env.getProperty("hibernate.dialect"));
        properties.put("hibernate.hbm2ddl.auto",
                env.getProperty("hibernate.hbm2ddl.auto"));
        properties.put("hibernate.hbm2ddl.import_files",
                env.getProperty("hibernate.hbm2ddl.import_files"));
        em.setJpaPropertyMap(properties);
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(em.getObject());
        return em;
    }

    @Primary
    @Bean(name = "transactionManager")
    public PlatformTransactionManager transactionManager() {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(prodEntityManager().getObject());
        return transactionManager;
    }

    @Bean
    public SessionFactory sessionFactory(EntityManagerFactory factory) {
        if(factory.unwrap(SessionFactory.class) == null){
            throw new NullPointerException("factory is not a hibernate factory");
        }
        return factory.unwrap(SessionFactory.class);
    }

}

hibernate.properties

hibernate.connection.driver_class=org.h2.Driver
hibernate.connection.url=jdbc:h2:~/test
hibernate.dialect=org.hibernate.dialect.H2Dialect
hibernate.query.factory_class=org.hibernate.hql.classic.ClassicQueryTranslatorFactory
hibernate.username=sa
hibernate.hbm2ddl.auto=create-drop
hibernate.hbm2ddl.import_files=loadtable.sql

loadtable.sql

CREATE TABLE CheckedInUsers (
`id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
 checkedInEventsId varchar(35),
 checkedInUsersId varchar(35)
);

Answer 1

I'm analayzing the your prntstack:

...
Caused by: org.h2.jdbc.JdbcSQLException: NULL not allowed for column "ID"; SQL statement:
insert into CheckedInUsers (checkedInEventsId, checkedInUsersId) values (?, ?) [23502-191]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
    at org.h2.message.DbException.get(DbException.java:179)
    at org.h2.message.DbException.get(DbException.java:155)
    at org.h2.table.Column.validateConvertUpdateSequence(Column.java:307)
    at org.h2.table.Table.validateConvertUpdateSequence(Table.java:779)
    at org.h2.command.dml.Insert.insertRows(Insert.java:151)
    at org.h2.command.dml.Insert.update(Insert.java:114)
    at org.h2.command.CommandContainer.update(CommandContainer.java:98)
    at org.h2.command.Command.executeUpdate(Command.java:258)
    at org.h2.jdbc.JdbcPreparedStatement.executeUpdateInternal(JdbcPreparedStatement.java:160)
    at org.h2.jdbc.JdbcPreparedStatement.executeUpdate(JdbcPreparedStatement.java:146)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.e

and in my opinion the real problem is in the id column af the your CheckedInUsers entity. in fact if you see the your code:

@Entity
@Table(name = "CheckedInUsers")
public class CheckedInUsers {

    private String id;

    private String checkedInEventsId;

    private String checkedInUsersId;

    @Id
    @GeneratedValue(generator="uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    @Column(name = "id", unique = true)
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    @Column(name = "checkedInEventsId")
    public String getEvent() {
        return checkedInEventsId;
    }

    public void setEvent(String event) {
        this.checkedInEventsId = event;
    }

    @Column(name = "checkedInUsersId")
    public String getUser() {
        return checkedInUsersId;
    }

    public void setUser(String user) {
        this.checkedInUsersId = user;
    }
}

and the your sql for creatig the table:

CREATE TABLE CheckedInUsers (
`id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
 checkedInEventsId varchar(35),
 checkedInUsersId varchar(35)
);

I found that you declared the id property in java as a String and in sql as an int with the autoincremented strategy. I consider that the problem is here.

Now I don't know well the your domain but try to make the data type in your java code the same in the sql.

I Seeing the code and I see that you use SpringData, spring data creates a new object if the id is null and updates the object if the id is not null, however i know that for JPA exists a strategy that tract numeric id for entity and not string. I read from the code that you wish you had string has id, I can suggest to see the implementation that spring data for mongo use because for mongo the default strategy for id generation use uuid.

I hope that this can help you