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https://docs.oracle.com/javaee%2F6%2Fapi%2F%2F%2F/javax/persistence/SequenceGenerator.html” rel=“nofollow noreferer”>https://docs.oracle.com/javaee%2F6%2Fapi%2F%2F/javax/persistence/SequenceGenerator.html>

BaseIdentifier.java
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(updatable = false, nullable = false)
    private Long id;

Order.java extends BaseIdentifier.java
Purchase.java extends BaseIdentifier.java

如何在<全球的水平上确定所有实体的违约序列生成器-alpositionSize to 1(say Order,cury)

Sample output
Hibernate: 
    create sequence orders_seq start with 1 increment by 50

一、导言

Answer 1

为此:

import jakarta.persistence.*;

@MappedSuperclass
public class BaseIdentifier {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "custom_gen")
    @SequenceGenerator(name = "custom_gen", allocationSize = 1)
    @Column(updatable = false, nullable = false)
    private Long id;

    // constructor
    // setters and getters.

}

Order_Table:

import jakarta.persistence.Entity;

@Entity
public class Order_Table extends BaseIdentifier {

}

采购:

import jakarta.persistence.Entity;

@Entity
public class Purchase extends BaseIdentifier {

}

Spring Boot logs:

www.un.org/Depts/DGACM/index_spanish.htm 我用Oracle DB进行了检测,并做了工作。

页: 1

PURCHASE:

CUSTOM_GEN:

友情链接