Question

我正在尝试使这种模型休眠persist方法：

package com.neo.jpa;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;

@Entity
@Table(name="scoring_response"

        )
public class Response {

    @Id
    @SequenceGenerator(name="scoring_credit_response_sequence" , sequenceName="scoring_credit_response_sequence")
    @GeneratedValue(generator="scoring_credit_response_sequence")
    private Long id;


    @JoinColumn(name="dossier_reference")
    @ManyToOne(fetch=FetchType.LAZY , optional=false)
    @NotNull
    private Dossier reference;

    @ManyToOne(fetch=FetchType.LAZY , optional=false , cascade= {CascadeType.DETACH})
    @JoinColumn(name="question_code")
    @NotNull
    private Question question;

    @Column(name="response" , columnDefinition="text")
    private String response;

    public Response() {}

    public Response(String jsonString) {
        System.out.println(jsonString);
    }

    //getters and setters

}

Dossier和Question是简单的键值模型。

当我尝试使用保存的问题ID（数据库中存在该ID）持久保存新的Response实体时，一切正常。

但是当我尝试使用未保存的问题ID来持久存储新的Response时，此行为很好，我得到了以下错误跟踪：

"Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class org.apache.deltaspike.data.api.QueryInvocationException,message=Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class org.apache.deltaspike.data.api.QueryInvocationException,message=Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class java.lang.reflect.InvocationTargetException,message=null",
        "Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class org.apache.deltaspike.data.api.QueryInvocationException,message=Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class java.lang.reflect.InvocationTargetException,message=null",
        "Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class java.lang.reflect.InvocationTargetException,message=null",
        null,
        "org.hibernate.TransientPropertyValueException: Not-null property references a transient value - transient instance must be saved before current operation: com.neo.jpa.Response.question -> com.neo.jpa.Question",
        "Not-null property references a transient value - transient instance must be saved before current operation: com.neo.jpa.Response.question -> com.neo.jpa.Question"

但是，无论问题ID是否保存，所有下一个请求都将失败。我不知道为什么：

"Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class org.apache.deltaspike.data.api.QueryInvocationException,message=Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class org.apache.deltaspike.data.api.QueryInvocationException,message=Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class java.lang.reflect.InvocationTargetException,message=null",
        "Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class org.apache.deltaspike.data.api.QueryInvocationException,message=Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class java.lang.reflect.InvocationTargetException,message=null",
        "Failed calling Repository: [Repository=com.neo.repository.ResponseRepository,entity=com.neo.jpa.Response,method=persist,exception=class java.lang.reflect.InvocationTargetException,message=null",
        null,
        "There are delayed insert actions before operation as cascade level 0."
]
}

请，我想知道是什么问题。

注意：当我使用休眠save方法时，一切都很好。

级联级别为0之前，操作有延迟的插入操作

0 个答案: