How to create Liquibase changesets automatically? - database

Question

I want to generate a changelog file automatically via one of the maven liquibase plugin commands. The changelog should include a changeset for creating a database table for the DiscountCode entity. Would diff be the correct plugin command for this case?
#Entity
#Table(name = "discount_code")
public class DiscountCode {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long discountId;
private String discountCode;
private LocalDate expiration;
private BigDecimal discountValue;
public DiscountCode() {}
public DiscountCode(String discountCode, LocalDate expiration, BigDecimal discountValue) {
this.discountCode = discountCode;
this.expiration = expiration;
this.discountValue = discountValue;
}
public Long getDiscountId() {
return discountId;
}
public void setDiscountId(Long discountId) {
this.discountId = discountId;
}
public String getDiscountCode() {
return discountCode;
}
public void setDiscountCode(String discountCode) {
this.discountCode = discountCode;
}
public LocalDate getExpiration() {
return expiration;
}
public void setExpiration(LocalDate expiration) {
this.expiration = expiration;
}
public BigDecimal getDiscountValue() {
return discountValue;
}
public void setDiscountValue(BigDecimal discountValue) {
this.discountValue = discountValue;
}
#Override
public String toString() {
return (
"DiscountCode{" +
"discountId=" +
discountId +
", discountCode='" +
discountCode +
'\'' +
", expiration=" +
expiration +
", discountValue=" +
discountValue +
'}'
);
}
}
These are the available liquibase commands:

Answer 1

The solution is using the Liquibase Hibernate plugin.
The plugin configuration:
<plugins>
<plugin>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-maven-plugin</artifactId>
<version>3.4.1</version>
<configuration>
<propertyFile>src/main/resources/liquibase.properties</propertyFile>
</configuration>
<dependencies>
<dependency>
<groupId>org.liquibase.ext</groupId>
<artifactId>liquibase-hibernate4</artifactId>
<version>3.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.7.3.RELEASE</version>
</dependency>
</dependencies>
</plugin>
</plugins>
Liquibase properties:
changeLogFile=classpath:liquibase-changeLog.xml
url=jdbc:mysql://localhost:3306/oauth_reddit
username=tutorialuser
password=tutorialmy5ql
driver=com.mysql.jdbc.Driver
referenceUrl=hibernate:spring:org.baeldung.persistence.model
?dialect=org.hibernate.dialect.MySQLDialect
diffChangeLogFile=src/main/resources/liquibase-diff-changeLog.xml
View this page for further information: https://www.baeldung.com/liquibase-refactor-schema-of-java-app