Question

我在MySQL 5.5.9上遇到1452错误，同时运行了我从EclipseLink网站（http://wiki.eclipse.org/EclipseLink/Examples/JPA/EmployeeXML）启动的一些JPA教程代码，我希望有人有一些见解。

到目前为止，我从主网站使用最新的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，出现以下错误：

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException：无法添加或更新子行：外键约束失败（jpatutorial。phone，CONSTRAINT FK_PHONE_EMP_PH_ID FOREIGN KEY（ EMP_PH_ID）参考EMPLOYEE（EMP_ID））错误代码：1452 呼叫：插入电话（PH_ID，TYPE，AREA_CODE，P_NUMBER，EMP_PH_ID）值（？，？，？，？，？） bind =＆gt; [25，工作，613,5558812,23] 查询：InsertObjectQuery（电话（[工作] 613 - 5558812））

此处的相关模型是Employee表和Phone表。电话和员工之间存在多对一的关系。 orm.xml的一部分如下：

<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>

代码成功创建表，为员工创建地址记录，创建所有员工记录，但随后插入电话记录失败，即使它具有对员工记录的有效FK引用。我简化了代码，使其执行，持久化并将所有内容提交到失败点，但无论是通过JPA执行插入还是通过运行SQL脚本手动执行，我都会遇到相同的1452错误。

有趣的是，我发现如果我删除了所有相关的Employee实体，并重新创建了由MySQL工作台反向设计的创建表定义，我能够通过JPA成功地将记录插入到所有表中，并通过脚本手动插入。因此，这表明Eclipselink正在以某种方式创建表，从而产生问题，并且MySQL Workbench没有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。

在登录FINEST时附加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

您包含的错误是项目而不是电话？

请包含通过最佳登录生成的DDL和SQL。

EcliplseLink2.1.2中涉及一对多和多对一关系的外键约束问题

1 个答案: