Error com.fasterxml.jackson.databind.JsonMappingException: Infinite recursion (StackOverflowError)

In my project, when I use getById, I have an “Infinite recursion” error. My application is structured as follows:

TABLES:

object AddressTable : UUIDTable("main.address") {
    val internalId = long("internal_id").autoIncrement().uniqueIndex("address_internal_id_index")
    val active = bool("active").default(true)
    val zipCode = varchar("zip_code", 10)
    val country = varchar("country", 120)
    val state = varchar("state", 120)
    val city = varchar("city", 120)
    val district = varchar("district", 120)
    val publicPlace = varchar("public_place", 120)
    val number = varchar("number", 10)
    val complement = varchar("complement", 50)
    val idPatientFk = reference(
        "id_patient_fk", PatientTable, ReferenceOption.CASCADE, ReferenceOption.NO_ACTION
    )
    val idProfessionalFk = reference(
        "id_professional_fk", ProfessionalTable, ReferenceOption.CASCADE, ReferenceOption.NO_ACTION
    )
}

class Address(id: EntityID<UUID>) : UUIDEntity(id) {
    companion object : UUIDEntityClass<Address>(AddressTable)

    var internalId by AddressTable.internalId
    var active by AddressTable.active
    var zipCode by AddressTable.zipCode
    var country by AddressTable.country
    var state by AddressTable.state
    var city by AddressTable.city
    var district by AddressTable.district
    var publicPlace by AddressTable.publicPlace
    var number by AddressTable.number
    var complement by AddressTable.complement
    val idPatientFk by Patient optionalBackReferencedOn AddressTable.idPatientFk
    val idProfessionalFk by Professional optionalBackReferencedOn AddressTable.idProfessionalFk
}

object PatientTable : UUIDTable("main.patient") {
    val internalId = long("internal_id").uniqueIndex("patient_internal_id_index").autoIncrement()
    val active = bool("active").default(true)
    val name = varchar("name", 120)
    val cpf = varchar("cpf", 14).uniqueIndex("patient_cpf_index")
    val birthDate = integer("birth_date")
}

class Patient(id: EntityID<UUID>) : UUIDEntity(id) {
    companion object : UUIDEntityClass<Patient>(PatientTable)

    var internalId by PatientTable.internalId
    var active by PatientTable.active
    var name by PatientTable.name
    var cpf by PatientTable.cpf
    var birthDate by PatientTable.birthDate
}

object ResponsibleTable : UUIDTable("main.responsible", "id") {
    val internalId = long("internal_id").uniqueIndex("responsible_internal_id_index")
    val active = bool("active").default(true)
    val name = varchar("name", 120)
    val cpf = varchar("cpf", 15).uniqueIndex("responsible_cpf_index")
    val idPatientFk = reference(
        "id_patient_fk", PatientTable, ReferenceOption.CASCADE, ReferenceOption.NO_ACTION
    )
}

class Responsible(id: EntityID<UUID>) : UUIDEntity(id) {
    companion object : UUIDEntityClass<Responsible>(ResponsibleTable)

    var internalId by ResponsibleTable.internalId
    var active by ResponsibleTable.active
    var name by ResponsibleTable.name
    var cpf by ResponsibleTable.cpf
    val idPatientFK by Patient optionalBackReferencedOn ResponsibleTable.idPatientFk
}

object PhoneTable : UUIDTable("main.phone", "id") {
    val internalId = long("internal_id").uniqueIndex("phone_internal_id_index")
    val active = bool("active")
    val number = varchar("number", 24).index("phone_number_index")
    val threadType = customEnumeration("thread_type", "EThreadType", { value ->
        EThreadType.valueOf(value as String)
    }, { EnumSetting("EThreadType", it) })
    val idPatientFk = reference(
        "id_patient_fk", PatientTable.id, ReferenceOption.CASCADE, ReferenceOption.NO_ACTION
    )
    val idResponsibleFk = reference(
        "id_responsible_fk", ResponsibleTable.id, ReferenceOption.CASCADE, ReferenceOption.NO_ACTION
    )
    val idProfessionalFk = reference(
        "id_professional_fk", ProfessionalTable.id, ReferenceOption.CASCADE, ReferenceOption.NO_ACTION
    )
}

class Phone(id: EntityID<UUID>) : UUIDEntity(id) {
    companion object : UUIDEntityClass<Phone>(PhoneTable)

    var internalId by PhoneTable.internalId
    var active by PhoneTable.active
    var number by PhoneTable.number
    var threadType by PhoneTable.threadType
    val idPatientFk by Patient optionalBackReferencedOn PhoneTable.idPatientFk
    val idResponsibleFk by Responsible optionalBackReferencedOn PhoneTable.idResponsibleFk
    val idProfessionalFk by Professional optionalBackReferencedOn PhoneTable.idProfessionalFk
}

object ProfessionalTable : UUIDTable("main.professional", "id") {
    val internalId = long("internal_id").autoIncrement().index("professional_internal_id_index")
    val active = bool("active")
    val name = varchar("name", 120)
    val cpf = varchar("cpf", 14).uniqueIndex("professional_cpf_index")
    val birthDate = integer("birth_date")
    val profession = customEnumeration("profession", "EProfessional", { value ->
        EProfession.valueOf(value as String)
    }, { EnumSetting("EProfessional", it) })
    val council = customEnumeration("council", "EProfessionalDocument", { value ->
        EProfessionalDocument.valueOf(value as String)
    }, { EnumSetting("EProfessionalDocument", it) })
    val documentNumber = varchar("document_number", 15).uniqueIndex("professional_document_number_index")
}

class Professional(id: EntityID<UUID>) : UUIDEntity(id) {
    companion object : UUIDEntityClass<Professional>(ProfessionalTable)

    var internalId by ProfessionalTable.internalId
    var active by ProfessionalTable.active
    var name by ProfessionalTable.name
    var cpf by ProfessionalTable.cpf
    var birthDate by ProfessionalTable.birthDate
    var profession by ProfessionalTable.profession
    var council by ProfessionalTable.council
    var documentNumber by ProfessionalTable.documentNumber
}

DATABASE FACTORY

 suspend fun <T> dbQuery(block: () -> T): T =
        withContext(Dispatchers.IO) {
            transaction { block() }

SERVICE

override suspend fun getById(id: UUID): Patient? = dbQuery {
        Patient.findById(id)
    }

CONTROLLER

fun Route.patient(service: PatientService) =
    route("/api/patient") {
 get("/{id}") {
            call.respond(service.getById(UUID.fromString(call.parameters["id"])) ?: HttpStatusCode.NotFound)
        }

My database: https://imgur.com/a/1Xn2qlN

But when I search for a patient, it always returns the error: com.fasterxml.jackson.databind.JsonMappingException: Infinite recursion (StackOverflowError) (through reference chain: org.jetbrains.exposed.sql.Column["table"]->com.rjdesenvolvimento.module.patients.PatientTable["columns"]->java.util.ArrayList[0]->org.jetbrains.exposed.sql.Column["table"]->com.rjdesenvolvimento.module.patients.PatientTable["columns"]->java.util.ArrayList[0]...

What am I doing wrong?

[userquin]

Instead jsonproperties you need use jsonignoreproperties, the former doesnt exist

El lun., 25 nov. 2019 10:18, Joaquín Sánchez [e-mail] escribió:

One tecnique is to create a pojo instead returning the entity.

Another using Jackson annotations to only include your fields. See JsonPropeties annotation for type.

To avoid circular dependencies is hard to solve, in this case I suggest you use pojos.

El lun., 25 nov. 2019 2:23, Rodrigo Batista [e-mail] escribió:

How do I do that? I price to retrieve data from table “Patient” and tables that have FK with table Patient.

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[userquin]

One tecnique is to create a pojo instead returning the entity.

Another using Jackson annotations to only include your fields. See JsonPropeties annotation for type.

To avoid circular dependencies is hard to solve, in this case I suggest you use pojos.

El lun., 25 nov. 2019 2:23, Rodrigo Batista [e-mail] escribió:

How do I do that? I price to retrieve data from table “Patient” and tables that have FK with table Patient.

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