Hi,
I have been consulting a number of approaches/posts/stackoverflow questions in order to deal with the following error (full stack trace) when running a Kotlin/SpringBoot application:
2020-04-22 18:33:56.823 ERROR 46345 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: No Dialect mapping for JDBC type: 2118910070
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1803)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215)
at app.ApplicationKt.main(Application.kt:13)
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.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: No Dialect mapping for JDBC type: 2118910070
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:403)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1862)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1799)
... 21 common frames omitted
Caused by: org.hibernate.MappingException: No Dialect mapping for JDBC type: 2118910070
at org.hibernate.dialect.TypeNames.get(TypeNames.java:71)
at org.hibernate.dialect.TypeNames.get(TypeNames.java:103)
at org.hibernate.dialect.Dialect.getTypeName(Dialect.java:369)
at org.hibernate.mapping.Column.getSqlType(Column.java:238)
at org.hibernate.tool.schema.internal.AbstractSchemaValidator.validateColumnType(AbstractSchemaValidator.java:156)
at org.hibernate.tool.schema.internal.AbstractSchemaValidator.validateTable(AbstractSchemaValidator.java:143)
at org.hibernate.tool.schema.internal.GroupedSchemaValidatorImpl.validateTables(GroupedSchemaValidatorImpl.java:42)
at org.hibernate.tool.schema.internal.AbstractSchemaValidator.performValidation(AbstractSchemaValidator.java:89)
at org.hibernate.tool.schema.internal.AbstractSchemaValidator.doValidation(AbstractSchemaValidator.java:68)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:192)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:73)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:320)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:462)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1249)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391)
... 25 common frames omitted
The issue lies in mapping the PostgreSQL’s JSONB data type with Hibernate.
The 2 approaches I have extensively tried and debugged are the following:
-
Implementing a Custom Hibernate Mapping and creating a custom UserType for JSONB. For example: here
-
Use Hibernate types. here
Please note that because of the restrictions of only 2 links per post, I could not include all the resources I consulted and used in my attempts at fixing the issue.
I have attempted profusely at both, but with no luck whatsoever and I am keen to understand where I am going wrong and what I have been missing.
Approach 1
My Entity:
@Entity
@TypeDef(name = "JsonUserType", typeClass = JsonUserType::class)
@Table(name = "entity")
data class MyEntity(
@Column(nullable = false)
val id: UUID,
@Column(nullable = false)
@Enumerated(value = EnumType.STRING)
@Column(nullable = false)
val type: Type,
@Type(type = "JsonUserType")
@Column(columnDefinition = "jsonb")
@Basic(fetch = FetchType.LAZY)
var event_data: Event
) : SomeEntity<UUID>(), SomeOtherStuff {
override fun getName(): String {
return id
}
}
enum class Type(val value: String) {
TYPE1("Type1"),
TYPE2("Type2")
}
My PoJO:
data class Event(
val someContent: String,
val someBoolean: Boolean
) : Serializable { //equals, hashcode etc are omitted }
My Custom Hibernate dialect:
class CustomPostgreSQLDialect : PostgreSQL95Dialect {
constructor() : super() {
this.registerColumnType(Types.JAVA_OBJECT, "jsonb")
}
}
My custom type (abstract class)
abstract class JsonDataUserType : UserType {
override fun sqlTypes(): IntArray? {
return intArrayOf(Types.JAVA_OBJECT)
}
override fun equals(value1: Any?, value2: Any?): Boolean {
return value1 == value2
}
override fun hashCode(value1: Any?): Int {
return value1!!.hashCode()
}
override fun assemble(value1: Serializable?, value2: Any?): Any {
return deepCopy(value1)
}
override fun disassemble(value1: Any?): Serializable {
return deepCopy(value1) as Serializable
}
override fun deepCopy(p0: Any?): Any {
return try {
val bos = ByteArrayOutputStream()
val oos = ObjectOutputStream(bos)
oos.writeObject(p0)
oos.flush()
oos.close()
bos.close()
val bais = ByteArrayInputStream(bos.toByteArray())
ObjectInputStream(bais).readObject()
} catch (ex: ClassNotFoundException) {
throw HibernateException(ex)
} catch (ex: IOException) {
throw HibernateException(ex)
}
}
override fun replace(p0: Any?, p1: Any?, p2: Any?): Any {
return deepCopy(p0)
}
override fun nullSafeSet(p0: PreparedStatement?, p1: Any?, p2: Int, p3: SharedSessionContractImplementor?) {
if (p1 == null) {
p0?.setNull(p2, Types.OTHER)
return
}
try {
val mapper = ObjectMapper()
val w = StringWriter()
mapper.writeValue(w, p1)
w.flush()
p0?.setObject(p2, w.toString(), Types.OTHER)
} catch (ex: java.lang.Exception) {
throw RuntimeException("Failed to convert Jsonb to String: " + ex.message, ex)
}
}
override fun nullSafeGet(p0: ResultSet?, p1: Array<out String>?, p2: SharedSessionContractImplementor?, p3: Any?): Any {
val cellContent = p0?.getString(p1?.get(0))
return try {
val mapper = ObjectMapper()
mapper.readValue(cellContent?.toByteArray(charset("UTF-8")), returnedClass())
} catch (ex: Exception) {
throw RuntimeException("Failed to convert String to Jsonb: " + ex.message, ex)
}
}
override fun isMutable(): Boolean {
return true
}
}
My concrete class:
class JsonType : JsonDataUserType() {
override fun returnedClass(): Class<Event> {
return Event::class.java
}
}
My application.yml jpa hibernate properties
jpa.properties.database.database-platform: org.hibernate.dialect.PostgreSQL95Dialect
jpa.properties.hibernate.dialect: org.myapp.util.CustomPostgreSQLDialect
Approach 2
Hibernate properties are exactly the same as well as the PoJo class, no custom mapper is included.
Entity
@Entity
@TypeDef(
name = "jsonb",
typeClass = JsonBinaryType::class
)
@Table(name = "entity")
data class MyEntity(
@Column(nullable = false)
val id: UUID,
@Column(nullable = false)
@Enumerated(value = EnumType.STRING)
@Column(nullable = false)
val type: Type,
@Type(type = "jsonb")
@Column(columnDefinition = "jsonb")
@Basic(fetch = FetchType.LAZY)
var event_data: Event
) : SomeEntity<UUID>(), SomeOtherStuff {
override fun getName(): String {
return id
}
}
enum class Type(val value: String) {
TYPE1("Type1"),
TYPE2("Type2")
}
Custom Dialect (using hibernate types):
class CustomPostgreSQLDialect : PostgreSQL95Dialect {
constructor() : super() {
this.registerHibernateType(Types.OTHER, JsonNodeBinaryType::class.java.name)
this.registerHibernateType(Types.OTHER, JsonStringType::class.java.name)
this.registerHibernateType(Types.OTHER, JsonBinaryType::class.java.name)
this.registerHibernateType(Types.OTHER, JsonNodeBinaryType::class.java.name)
this.registerHibernateType(Types.OTHER, JsonNodeStringType::class.java.name)
}
}
Please note that I also tried using only:
this.registerHibernateType(Types.OTHER, "jsonb")
as well as having all this in my entity or the base entity it extended from (no change for that matter):
@TypeDefs({
@TypeDef(name = "string-array", typeClass = StringArrayType.class),
@TypeDef(name = "int-array", typeClass = IntArrayType.class),
@TypeDef(name = "json", typeClass = JsonStringType.class),
@TypeDef(name = "jsonb", typeClass = JsonBinaryType.class),
@TypeDef(name = "jsonb-node", typeClass = JsonNodeBinaryType.class),
@TypeDef(name = "json-node", typeClass = JsonNodeStringType.class),
})
Is there anything evidently wrong I am doing in both approaches? I cannot get it working and, not sure if in any way relevant, the numerical value after No Dialect mapping for JDBC type: is always different. I am adding this as I have seen some ids being relevant for certain categories of errors.
Can you help? Any advice, comment, help would be appreciated as I believe I kinda hit a dead end.