I have problem with "communication" between Spring
and PostgreSQL
.
My class User.java
:
public static final String TABLE_NAME = "USERS";
public static final String SEQENCE = "USERS_SEQ";
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = SEQENCE)
@SequenceGenerator(name = SEQENCE, sequenceName = SEQENCE, allocationSize = 1)
private Long userId;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "department_id")
private Department department;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "organizazion_id")
private Organization organization;
Create table script for USERS
:
CREATE TABLE IF NOT EXISTS USERS (
USER_ID BIGINT NOT NULL,
DEPARTMENT_ID BIGINT,
ORGANIZATION_ID BIGINT,
PRIMARY KEY (USER_ID),
FOREIGN KEY (DEPARTMENT_ID) REFERENCES DEPARTMENT(DEPARTMENT_ID),
FOREIGN KEY (ORGANIZATION_ID) REFERENCES ORGANIZATION(ORGANIZATION_ID)
);
Class Department.java
public static final String TABLE_NAME = "DEPARTMENT";
public static final String SEQENCE = "DEPARTMENT_SEQ";
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = SEQENCE)
@SequenceGenerator(name = SEQENCE, sequenceName = SEQENCE, allocationSize = 1)
private Long departmentId;
private String departmentName;
.
.
. //Some other columns of primitive types about department..
Create table script for DEPARTMENT
:
CREATE TABLE IF NOT EXISTS DEPARTMENT (
DEPARTMENT_ID BIGINT NOT NULL,
DEPARTMENT_NAME VARCHAR(50),
PRIMARY KEY (DEPARTMENT_ID)
);
Class Organization.java
public static final String TABLE_NAME = "ORGANIZATION";
public static final String SEQENCE = "ORGANIZATION_SEQ";
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = SEQENCE)
@SequenceGenerator(name = SEQENCE, sequenceName = SEQENCE, allocationSize = 1)
private Long organizationId;
private String organizationName;
private String street;
private String postalCode;
private String state;
private String city;
Create table script for ORGANIZATION
:
CREATE TABLE IF NOT EXISTS ORGANIZATION (
ORGANIZATION_ID BIGINT NOT NULL,
ORGANIZATION_NAME VARCHAR(50),
STREET VARCHAR(255),
POSTAL_CODE VARCHAR(50),
STATE VARCHAR(255),
CITY VARCHAR(255),
PRIMARY KEY (ORGANIZATION_ID)
);
When I run the program, the Spring
create "own" columns in PostgreSQL
, and it's look like:
USER_ID, DEPARTMENT_ID, ORGANIZATION_ID, DEPARTMENT_DEPARTMENT_ID, ORGANIZATION_ORGANIZATION_ID
How can I fix it ? It should be without columns
DEPARTMENT_DEPARTMENT_ID, ORGANIZATION_ORGANIZATION_ID
The annotation @Column(name = "column_name")
can't be used here.
CodePudding user response:
As join column you should reference the attribute in the other class:
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = SEQENCE)
@SequenceGenerator(name = SEQENCE, sequenceName = SEQENCE, allocationSize = 1)
private Long userId;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "departmentId")
private Department department;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "organizazionId")
private Organization organization;