Question

我正在尝试从保管库查询状态而不使用状态的线性ID，而是使用模式中存在的Int（唯一）变量

val sNumber = AState.ASchemaV1.AEntity::SNumber
val QueryCriteria = QueryCriteria.VaultCustomQueryCriteria(sNumber.equal(SalesNumber))
val StateAndRef = serviceHub.vaultService.queryBy<AState>(QueryCriteria).states.single()
val outState = StateAndRef.state.data

查询条件没有引发任何错误，但是我也没有得到任何输出，但是在调试时我得到了错误响应

javax.persistence.PersistenceException: org.hibernate.InstantiationException: No default constructor for entity: AState.ASchemaV1.AEntity

但是我已经定义了函数中的所有列。我想念什么？这是Schema的代码

    override fun supportedSchemas() = listOf(ASchemaV1)
    override fun generateMappedObject(schema: MappedSchema) = ASchemaV1.AEntity(this)

    object ASchemaV1 : MappedSchema(AState::class.java, 1, listOf(AEntity::class.java)) {
        @Entity
        @Table(name = "Table")
        class AEntity(A: AState) : PersistentState() {
            @Column
            var CONumber: String = A.linearId.id.toString()
            @Column
            var SalesNumber: Int = A.SalesNumber
            @Column
            var ProductID: Int = A.ProductID
            @Column
            var Quantity: Int = A.Quantity
            @Column
            var Rate: Double = A.Rate
            @Column
            var DeliveryDate: Date = A.DeliveryDate
            @Column
            var DeliveryLocation: String = A.DeliveryLocation
            @Column
            var Status: String = A.Status.toString()
        }
    }

Answer 1

AState.ASchemaV1缺少构造函数。

object ASchemaV1 : MappedSchema(AState::class.java, 1, listOf(AEntity::class.java)) {
    @Entity
    @Table(name = "Table")
    class AEntity(
        @Column
        var CONumber: String,
        @Column
        var SalesNumber: Int,
        @Column
        var ProductID: Int,
        @Column
        var Quantity: Int,
        @Column
        var Rate: Double,
        @Column
        var DeliveryDate: Date,
        @Column
        var DeliveryLocation: String,
        @Column
        var Status: String
    ): PersistentState() {
       constructor(A: AState): this(A.linearId.id.toString(), A.SalesNumber, A.ProductID, A.Quantity, A.Rate, A.DeliveryDate, A.DeliveryLocation, A.Status.toString())
    }
}

科尔达州的VaultCustomQueryCriteria

1 个答案: