EcliplseLink2.1.2中涉及一对多和多对一关系的外键约束问题

Question

我在运行一些从 EclipseLink 网站 (http://wiki.eclipse.org/EclipseLink/Examples/JPA/EmployeeXML) 下载的 JPA 教程代码时遇到了 MySQL 5.5.9 上的 1452 错误，我希望有人能有所了解。

截至今天，我正在使用主网站上最新的 EclipseLink 稳定版本： eclipselink-jpa-modelgen_2.1.2.v20101206-r8635.jar 和 javax.persistence_2.0.1.v201006031150.jar。

当我通过 CreateDatabase.java 填充数据库时，我收到以下错误：

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException：无法添加或更新子行：外键约束失败（jpatutorial.phone，约束FK_PHONE_EMP_PH_ID外键（EMP_PH_ID）参考@ 987654326@ (EMP_ID)) 错误代码：1452 呼叫：INSERT INTO PHONE（PH_ID、TYPE、AREA_CODE、P_NUMBER、EMP_PH_ID）VALUES（?、?、?、?、?） 绑定 => [25, 工作, 613, 5558812, 23] 查询：InsertObjectQuery(Phone([Work] 613 - 5558812))

这里的相关模型是 Employee 表和 Phone 表。电话和员工之间存在多对一的关系。 orm.xml 的部分内容如下：

<entity class="model.PhoneNumber">
    <table name="PHONE" />
    <attributes>
    .
            .
        <many-to-one name="owner">
            <join-column name="EMP_PH_ID" />
        </many-to-one>
    </attributes>
</entity>

<entity class="model.Employee">
    <!--  secondary-table name="SALARY" /-->
    <attributes>
        <id name="id">
            <column name="EMP_ID" />
            <generated-value />
        </id>
        .
                    .
        <one-to-many name="phoneNumbers" mapped-by="owner">
            <cascade>
                <cascade-all />
            </cascade>
            <private-owned />
        </one-to-many>
              .
                      .
    </attributes>
</entity>

代码成功地创建了表，为员工创建了地址记录，创建了所有员工记录，但随后在插入电话记录时失败，即使它具有对员工记录的有效 FK 引用。我简化了代码，以便它执行、持久化并提交所有内容，直到失败为止，但是无论我是通过 JPA 执行插入还是通过运行 SQL 脚本手动执行，我最终都会遇到相同的 1452 错误。

有趣的是，我发现如果我删除所有相关的 Employee 实体，并通过 MySQL 工作台逆向工程的创建表定义重新创建它们，我能够通过 JPA 和手动通过脚本成功地将记录插入所有表中。因此，这表明 Eclipselink 正在以某种方式创建表，这会产生问题，而 MySQL Workbench 并未在逆向工程中捕获这些有问题的定义。在这一点上，我没有想法。

通过登录 FINEST 附加 DDL：

[EL Finest]: sequencing connected, state is Preallocation_Transaction_NoAccessor_State
[EL Finest]: sequence : preallocation size 50
[EL Finest]: sequence SEQ_GEN: preallocation size 50
[EL Info]: file:/Users/dylantong/Documents/workspace/JPA Tutorial/bin/_employee login successful
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PHONE DROP FOREIGN KEY FK_PHONE_EMP_PH_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE PHONE DROP FOREIGN KEY FK_PHONE_EMP_PH_ID
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE EMPLOYEE DROP FOREIGN KEY FK_EMPLOYEE_MANAGER_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE EMPLOYEE DROP FOREIGN KEY FK_EMPLOYEE_MANAGER_ID
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE EMPLOYEE DROP FOREIGN KEY FK_EMPLOYEE_ADDR_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE EMPLOYEE DROP FOREIGN KEY FK_EMPLOYEE_ADDR_ID
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PROJ_EMP DROP FOREIGN KEY FK_PROJ_EMP_EMP_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE PROJ_EMP DROP FOREIGN KEY FK_PROJ_EMP_EMP_ID
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PROJ_EMP DROP FOREIGN KEY FK_PROJ_EMP_PROJ_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE PROJ_EMP DROP FOREIGN KEY FK_PROJ_EMP_PROJ_ID
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PROJECT DROP FOREIGN KEY FK_PROJECT_LEADER_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE PROJECT DROP FOREIGN KEY FK_PROJECT_LEADER_ID
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE LPROJECT DROP FOREIGN KEY FK_LPROJECT_PROJ_ID")
[EL Fine]: Connection(876256661)--ALTER TABLE LPROJECT DROP FOREIGN KEY FK_LPROJECT_PROJ_ID
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE PHONE")
[EL Fine]: Connection(876256661)--DROP TABLE PHONE
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE PHONE (PH_ID INTEGER NOT NULL, TYPE VARCHAR(255) NOT NULL, AREA_CODE VARCHAR(255), P_NUMBER VARCHAR(255), EMP_PH_ID INTEGER, PRIMARY KEY (PH_ID, TYPE))")
[EL Fine]: Connection(876256661)--CREATE TABLE PHONE (PH_ID INTEGER NOT NULL, TYPE VARCHAR(255) NOT NULL, AREA_CODE VARCHAR(255), P_NUMBER VARCHAR(255), EMP_PH_ID INTEGER, PRIMARY KEY (PH_ID, TYPE))
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE EMPLOYEE")
[EL Fine]: Connection(876256661)--DROP TABLE EMPLOYEE
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE EMPLOYEE (EMP_ID INTEGER NOT NULL, L_NAME VARCHAR(255), END_TIME TIME, VERSION BIGINT, START_TIME TIME, GENDER VARCHAR(255), salary DOUBLE, F_NAME VARCHAR(255), MANAGER_ID INTEGER, ADDR_ID INTEGER, START_DATE DATE, END_DATE DATE, PRIMARY KEY (EMP_ID))")
[EL Fine]: Connection(876256661)--CREATE TABLE EMPLOYEE (EMP_ID INTEGER NOT NULL, L_NAME VARCHAR(255), END_TIME TIME, VERSION BIGINT, START_TIME TIME, GENDER VARCHAR(255), salary DOUBLE, F_NAME VARCHAR(255), MANAGER_ID INTEGER, ADDR_ID INTEGER, START_DATE DATE, END_DATE DATE, PRIMARY KEY (EMP_ID))
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE PROJ_EMP")
[EL Fine]: Connection(876256661)--DROP TABLE PROJ_EMP
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE PROJ_EMP (EMP_ID INTEGER NOT NULL, PROJ_ID INTEGER NOT NULL, PRIMARY KEY (EMP_ID, PROJ_ID))")
[EL Fine]: Connection(876256661)--CREATE TABLE PROJ_EMP (EMP_ID INTEGER NOT NULL, PROJ_ID INTEGER NOT NULL, PRIMARY KEY (EMP_ID, PROJ_ID))
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE ADDRESS")
[EL Fine]: Connection(876256661)--DROP TABLE ADDRESS
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE ADDRESS (ADDRESS_ID INTEGER NOT NULL, P_CODE VARCHAR(255), STREET VARCHAR(255), PROVINCE VARCHAR(255), COUNTRY VARCHAR(255), CITY VARCHAR(255), PRIMARY KEY (ADDRESS_ID))")
[EL Fine]: Connection(876256661)--CREATE TABLE ADDRESS (ADDRESS_ID INTEGER NOT NULL, P_CODE VARCHAR(255), STREET VARCHAR(255), PROVINCE VARCHAR(255), COUNTRY VARCHAR(255), CITY VARCHAR(255), PRIMARY KEY (ADDRESS_ID))
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE PROJECT")
[EL Fine]: Connection(876256661)--DROP TABLE PROJECT
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE PROJECT (PROJ_ID INTEGER NOT NULL, PROJ_TYPE VARCHAR(31), DESCRIP VARCHAR(255), PROJ_NAME VARCHAR(255), VERSION BIGINT, LEADER_ID INTEGER, PRIMARY KEY (PROJ_ID))")
[EL Fine]: Connection(876256661)--CREATE TABLE PROJECT (PROJ_ID INTEGER NOT NULL, PROJ_TYPE VARCHAR(31), DESCRIP VARCHAR(255), PROJ_NAME VARCHAR(255), VERSION BIGINT, LEADER_ID INTEGER, PRIMARY KEY (PROJ_ID))
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE RESPONS")
[EL Fine]: Connection(876256661)--DROP TABLE RESPONS
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE RESPONS (EMP_ID INTEGER NOT NULL, RESPON_DESC VARCHAR(255))")
[EL Fine]: Connection(876256661)--CREATE TABLE RESPONS (EMP_ID INTEGER NOT NULL, RESPON_DESC VARCHAR(255))
[EL Finest]: Execute query DataModifyQuery(sql="DROP TABLE LPROJECT")
[EL Fine]: Connection(876256661)--DROP TABLE LPROJECT
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE LPROJECT (PROJ_ID INTEGER NOT NULL, MILESTONE DATETIME, BUDGET DOUBLE, PRIMARY KEY (PROJ_ID))")
[EL Fine]: Connection(876256661)--CREATE TABLE LPROJECT (PROJ_ID INTEGER NOT NULL, MILESTONE DATETIME, BUDGET DOUBLE, PRIMARY KEY (PROJ_ID))
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PHONE ADD CONSTRAINT FK_PHONE_EMP_PH_ID FOREIGN KEY (EMP_PH_ID) REFERENCES EMPLOYEE (EMP_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE PHONE ADD CONSTRAINT FK_PHONE_EMP_PH_ID FOREIGN KEY (EMP_PH_ID) REFERENCES EMPLOYEE (EMP_ID)
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE EMPLOYEE ADD CONSTRAINT FK_EMPLOYEE_MANAGER_ID FOREIGN KEY (MANAGER_ID) REFERENCES EMPLOYEE (EMP_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE EMPLOYEE ADD CONSTRAINT FK_EMPLOYEE_MANAGER_ID FOREIGN KEY (MANAGER_ID) REFERENCES EMPLOYEE (EMP_ID)
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE EMPLOYEE ADD CONSTRAINT FK_EMPLOYEE_ADDR_ID FOREIGN KEY (ADDR_ID) REFERENCES ADDRESS (ADDRESS_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE EMPLOYEE ADD CONSTRAINT FK_EMPLOYEE_ADDR_ID FOREIGN KEY (ADDR_ID) REFERENCES ADDRESS (ADDRESS_ID)
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PROJ_EMP ADD CONSTRAINT FK_PROJ_EMP_EMP_ID FOREIGN KEY (EMP_ID) REFERENCES EMPLOYEE (EMP_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE PROJ_EMP ADD CONSTRAINT FK_PROJ_EMP_EMP_ID FOREIGN KEY (EMP_ID) REFERENCES EMPLOYEE (EMP_ID)
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PROJ_EMP ADD CONSTRAINT FK_PROJ_EMP_PROJ_ID FOREIGN KEY (PROJ_ID) REFERENCES PROJECT (PROJ_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE PROJ_EMP ADD CONSTRAINT FK_PROJ_EMP_PROJ_ID FOREIGN KEY (PROJ_ID) REFERENCES PROJECT (PROJ_ID)
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE PROJECT ADD CONSTRAINT FK_PROJECT_LEADER_ID FOREIGN KEY (LEADER_ID) REFERENCES EMPLOYEE (EMP_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE PROJECT ADD CONSTRAINT FK_PROJECT_LEADER_ID FOREIGN KEY (LEADER_ID) REFERENCES EMPLOYEE (EMP_ID)
[EL Finest]: Execute query DataModifyQuery(sql="ALTER TABLE LPROJECT ADD CONSTRAINT FK_LPROJECT_PROJ_ID FOREIGN KEY (PROJ_ID) REFERENCES PROJECT (PROJ_ID)")
[EL Fine]: Connection(876256661)--ALTER TABLE LPROJECT ADD CONSTRAINT FK_LPROJECT_PROJ_ID FOREIGN KEY (PROJ_ID) REFERENCES PROJECT (PROJ_ID)
[EL Finest]: Execute query DataModifyQuery(sql="CREATE TABLE SEQUENCE (SEQ_NAME VARCHAR(50) NOT NULL, SEQ_COUNT DECIMAL(38), PRIMARY KEY (SEQ_NAME))")
[EL Fine]: Connection(876256661)--CREATE TABLE SEQUENCE (SEQ_NAME VARCHAR(50) NOT NULL, SEQ_COUNT DECIMAL(38), PRIMARY KEY (SEQ_NAME))
[EL Fine]: SELECT 1

Answer 1

您包含的错误是在项目而不是手机上？

请包括登录时生成的 DDL 和 SQL。