Java 与外键约束斗争
我确实在定义一些外键时遇到问题。 我有一个发行人,他有一个地址。 我有一个地址谁有一个国家 我试图在这些POJO上使用Liquibase定义外键约束,但运气不好,仍然出现相同的错误:Java 与外键约束斗争,java,sql,jpa,liquibase,Java,Sql,Jpa,Liquibase,我确实在定义一些外键时遇到问题。 我有一个发行人,他有一个地址。 我有一个地址谁有一个国家 我试图在这些POJO上使用Liquibase定义外键约束,但运气不好,仍然出现相同的错误: Caused by: liquibase.exception.DatabaseException: Column "COUNTRY_ID" not found; SQL statement: ALTER TABLE PUBLIC.ADDRESS ADD CONSTRAINT FK_ADDRESS
Caused by: liquibase.exception.DatabaseException: Column "COUNTRY_ID" not found; SQL statement:
ALTER TABLE PUBLIC.ADDRESS ADD CONSTRAINT FK_ADDRESS_TO_COUNTRY FOREIGN KEY (COUNTRY_ID) REFERENCES PUBLIC.COUNTRY (ID) [42122-200] [Failed SQL: (42122) ALTER TABLE PUBLIC.ADDRESS ADD CONSTRAINT FK_ADDRESS_TO_COUNTRY FOREIGN KEY (COUNTRY_ID) REFERENCES PUBLIC.COUNTRY (ID)]
这是我的课
@Entity
@Table(name = "COUNTRY")
@SequenceGenerator(name = "seq_country", sequenceName = "SEQ_COUNTRY", allocationSize = 1)
public class Country {
@Id
@Column(name = "ID")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seq_country")
private Long id;
@Column(name = "SHORT_NAME")
private String shortName;
@Column(name = "NAME")
private String name;
@OneToMany(mappedBy = "country", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private List<Address> addresses;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getShortName() {
return shortName;
}
public void setShortName(String shortName) {
this.shortName = shortName;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Address> getAddresses() {
return addresses;
}
public void setAddresses(List<Address> addresses) {
this.addresses = addresses;
}
@实体
@表(name=“发卡机构”)
@SequenceGenerator(name=“seq_issuer”,sequenceName=“seq_issuer”,allocationSize=1)
公共类发行人{
@身份证
@列(name=“ID”)
@GeneratedValue(策略=GenerationType.SEQUENCE,generator=“seq_发行人”)
私人长id;
@列(name=“name”)
私有字符串名称;
@OneToOne(级联=级联类型.ALL)
@JoinColumn(name=“ADDRESS\u ID”)
私人地址;
@列(name=“邮件地址”)
私有字符串电子邮件地址;
@列(name=“公司\联系方式\参考”)
私人字符串联系人;
@列(name=“其他联系人”
私人联络人;
@OneToMany(mappedBy=“issuer”,fetch=FetchType.EAGER,cascade=CascadeType.ALL)
私人收藏资产;
公共长getId(){
返回id;
}
公共无效集合id(长id){
this.id=id;
}
公共字符串getName(){
返回名称;
}
公共void集合名(字符串名){
this.name=名称;
}
公共字符串getEmailAddress(){
返回电子邮件地址;
}
public void setEmailAddress(字符串emailAddress){
this.emailAddress=电子邮件地址;
}
公共字符串getContactPerson(){
返回联系人;
}
public void setContactPerson(字符串contactPerson){
this.contactPerson=联系人;
}
公共字符串getOtherContactPerson(){
返回其他联系人;
}
public void setOtherContactPerson(字符串otherContactPerson){
this.otherContactPerson=otherContactPerson;
}
公共集合getAssets(){
归还资产;
}
公共资产(集合资产){
这是资产=资产;
}
公共广播getAddress(){
回信地址;
}
公共无效设置地址(地址){
this.address=地址;
}
}
如果有人有同样的问题,或者在这里看到一些可怕的事情,不要犹豫
谢谢,Stephanie首先,地址表中没有列名COUNTRY\u ID,但您仍在尝试使用此列创建外键
<addForeignKeyConstraint baseTableName="ADDRESS" baseColumnNames="COUNTRY_ID"
constraintName="FK_ADDRESS_TO_COUNTRY"
referencedTableName="COUNTRY"
referencedColumnNames="ID"/>
将基本列名从COUNTRY_ID更改为IDhi&welcome!:)第一个“微小”问题(但它可能会解决!):对于前3个变更集,您显然混淆了
作者
和id
。例外情况是:您的表“ADDRESS”没有列“COUNTRY_id”,因此无法在该列上创建外键约束。Thx,@ThomasKläger。。所以
内部的
可以解决这个问题。@xerx593非常感谢!!很明显,我晚上要睡觉了,谢谢!所有这些我都看过至少10遍了。
@Entity
@Table(name = "ISSUER")
@SequenceGenerator(name = "seq_issuer", sequenceName = "SEQ_ISSUER", allocationSize = 1)
public class Issuer {
@Id
@Column(name = "ID")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seq_issuer")
private Long id;
@Column(name = "NAME")
private String name;
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "ADDRESS_ID")
private Address address;
@Column(name = "MAIL_ADDRESS")
private String emailAddress;
@Column(name = "COMPANY_CONTACT_REF")
private String contactPerson;
@Column(name = "OTHER_CONTACT_REF")
private String otherContactPerson;
@OneToMany(mappedBy = "issuer", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private Collection<Asset> assets;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}
public String getContactPerson() {
return contactPerson;
}
public void setContactPerson(String contactPerson) {
this.contactPerson = contactPerson;
}
public String getOtherContactPerson() {
return otherContactPerson;
}
public void setOtherContactPerson(String otherContactPerson) {
this.otherContactPerson = otherContactPerson;
}
public Collection<Asset> getAssets() {
return assets;
}
public void setAssets(Collection<Asset> assets) {
this.assets = assets;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
<changeSet id="sremy" author="DEV-194-01">
<dropColumn tableName="ASSET" columnName="LEGAL_ADDRESS"/>
<dropColumn tableName="ASSET" columnName="MAIL_ADDRESS"/>
<dropColumn tableName="ASSET" columnName="COMPANY_CONTACT_REF"/>
<dropColumn tableName="ASSET" columnName="OTHER_CONTACT_REF"/>
<dropColumn tableName="ASSET" columnName="COMPANY"/>
<dropColumn tableName="ASSET" columnName="COUNTRY"/>
</changeSet>
<changeSet id="sremy" author="DEV-194-02">
<createTable tableName="COUNTRY">
<column name="ID" type="BIGINT">
<constraints nullable="false"/>
</column>
<column name="CODE_ALPHA_2" type="VARCHAR(2)"/>
<column name="NAME" type="VARCHAR(50)"/>
</createTable>
<addPrimaryKey tableName="COUNTRY" columnNames="ID"
constraintName="PK_COUNTRY"/>
<createSequence sequenceName="SEQ_COUNTRY"/>
</changeSet>
<changeSet id="sremy" author="DEV-194-03">
<createTable tableName="ADDRESS">
<column name="ID" type="BIGINT">
<constraints nullable="false"/>
</column>
<column name="ADDRESS" type="VARCHAR(250)"/>
<column name="POSTAL_CODE" type="VARCHAR(20)"/>
<column name="CITY" type="VARCHAR(250)"/>
</createTable>
<addPrimaryKey tableName="ADDRESS" columnNames="ID"
constraintName="PK_ADDRESS"/>
<createSequence sequenceName="SEQ_ADDRESS"/>
<addForeignKeyConstraint baseTableName="ADDRESS" baseColumnNames="COUNTRY_ID"
constraintName="FK_ADDRESS_TO_COUNTRY" referencedTableName="COUNTRY"
referencedColumnNames="ID"/>
</changeSet>
<changeSet author="sremy" id="DEV-194-04">
<createTable tableName="ISSUER">
<column name="ID" type="BIGINT">
<constraints nullable="false"/>
</column>
<column name="NAME" type="VARCHAR(250)">
</column>
<column name="MAIL_ADDRESS" type="VARCHAR(250)">
</column>
<column name="COMPANY_CONTACT_REF" type="VARCHAR(250)">
</column>
<column name="OTHER_CONTACT_REF" type="VARCHAR(250)">
</column>
</createTable>
<addPrimaryKey tableName="ISSUER" columnNames="ID"
constraintName="PK_ISSUER"/>
<createSequence sequenceName="SEQ_ISSUER"/>
<addForeignKeyConstraint baseTableName="ISSUER" baseColumnNames="ADDRESS_ID"
constraintName="FK_ISSUER_TO_ADDRESS" referencedTableName="ADDRESS"
referencedColumnNames="ID"/>
</changeSet>
<changeSet id="sremy" author="DEV-194-05">
<addColumn tableName="ASSET">
<column name="ISSUER_ID" type="BIGINT">
<constraints nullable="false"/>
</column>
</addColumn>
<addForeignKeyConstraint
baseTableName="ASSET" baseColumnNames="ISSUER_ID"
referencedTableName="ISSUER" referencedColumnNames="ID"
constraintName="FK_ASSET_TO_ISSUER"/>
</changeSet>
<addForeignKeyConstraint baseTableName="ADDRESS" baseColumnNames="COUNTRY_ID"
constraintName="FK_ADDRESS_TO_COUNTRY"
referencedTableName="COUNTRY"
referencedColumnNames="ID"/>