我知道这是一个老问题，但是我发布了答案，因为它可能对其他人有用。
我不得不面对同样的需求，这很难实现，因此在这里您可以找到实现从enums架构生成枚举的代码。
该代码是用groovy实现的，但是对于Java来说却非常相似。
首先也是 ，我必须为我的枚举生成器创建一个单独的项目，因为它将作为要使用它的项目的依赖项。这是 因为生成代码的项目必须在编译时运行枚举生成器，因此实现此目的的方法是将枚举生成器添加为依赖项。
package com.ctg.jooqgenerator.jooq
import org.jooq.codegen.JavaGenerator
import org.jooq.codegen.JavaWriter
import org.jooq.Meta.Database
import org.jooq.Meta.SchemaDeFinition
import org.jooq.Meta.TableDeFinition
import org.slf4j.Logger
import org.slf4j.LoggerFactory
import java.sql.ResultSet
class EnumGenerator extends JavaGenerator {
private static final String ENUMS_SCHEMA = "enums"
private static final Logger log = LoggerFactory.getLogger(EnumGenerator.class)
@Override
void generateSchema(SchemaDeFinition schema) {
// Apply custom logic only for `enums` schema. Others schema has regular generation
if (schema.name != ENUMS_SCHEMA) {
super.generateSchema(schema)
return
}
log.info("Generating enums")
log.info("----------------------------------------------------------")
Database db = schema.database
db.getTables(schema).each { TableDeFinition table ->
// Prepare enum name from snake_case to CamelCase
String enumName = table.name.replaceAll('_([a-z])') { it[1].capitalize() }.capitalize()
JavaWriter out = newJavaWriter(new File(getFile(schema).getParentFile(), "${enumName}.java"))
log.info("Generating enum: {}.java [input={}, output={}]", enumName, table.name, enumName)
printPackage(out, schema)
out.println("public enum $enumName {")
ResultSet rs = db.connection.prepareStatement("SELECT * FROM ${schema}.\"${table.name}\"").executeQuery()
while (rs.next()) {
String name = rs.getString('name'),
description = rs.getString('description'),
s = rs.isLast() ? ";" : ","
// Generate enum entry
out.tab(1).println("$name(\"$description\")$s")
}
out.println("""
| private final String description;
|
| private $enumName(String description) {
| this.description = description;
| }
|}
""".stripMargin())
closeJavaWriter(out)
}
log.info("----------------------------------------------------------")
super.generateSchema(schema)
}
}
将转换为枚举的表如下所示：
-- Table name `account_role` will be translated into `AccountRole`
CREATE TABLE enums.account_role (
"name" varchar(100) NOT NULL,
description varchar(255) NOT NULL,
CONSTRAINT account_role_name_key UNIQUE (name)
);
-- Table entries will be translated into enum entries
INSERT INTO enums.account_role ("name",description) VALUES
('BILLING','Role for contact/address that will be a Billing contact/address'),
('PAYMENT','Role for contact/address that will be a Payment contact/address'),
('SERVICE','Role for contact/address that will be a Service contact/address'),
('SOLD_TO','Role for contact/address that will be a SoldTo contact/address')
;
此数据定义将导致以下自动生成的枚举AccountRole.java：
/*
* This file is generated by jOOQ.
*/
package com.congerotechnology.ctgcommon.jooq.enums;
public enum AccountRole {
BILLING("Role for contact/address that will be a Billing contact/address"),
PAYMENT("Role for contact/address that will be a Payment contact/address"),
SERVICE("Role for contact/address that will be a Service contact/address"),
SOLD_TO("Role for contact/address that will be a SoldTo contact/address");
private final String description;
private AccountRole(String description) {
this.description = description;
}
}
然后在将使用此枚举生成器的主项目上，我在上设置了以下maven代码pom.xml：
<dependencies>
...
<!-- JOOQ custom generator -->
<dependency>
<groupId>com.ctg</groupId>
<artifactId>ctg-jooq-generator</artifactId>
<version>0.0.1</version>
</dependency>
...
</dependencies>
<build>
...
<plugins>
<!-- JOOQ code generation -->
<plugin>
<groupId>org.jooq</groupId>
<artifactId>jooq-codegen-maven</artifactId>
<version>${jooq.version}</version>
<executions>
<execution>
<id>generate-sources</id>
<phase>generate-sources</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<jdbc>
<driver>org.postgresql.Driver</driver>
<url>jdbc:postgresql://${env.DB_URL}</url>
<user>${env.DB_USER}</user>
<password>${env.DB_PASSWORD}</password>
</jdbc>
<generator>
<name>com.ctg.ctgjooqgenerator.jooq.EnumGenerator</name>
<database>
<name>org.jooq.Meta.postgres.PostgresDatabase</name>
<includes>.*</includes>
<excludes />
<dateAsTimestamp>true</dateAsTimestamp>
<inputSchema>enums</inputSchema>
</database>
<generate>
<deprecated>false</deprecated>
<instanceFields>true</instanceFields>
</generate>
<target>
<packageName>com.ctg.ctgcommon.jooq.enums</packageName>
<directory>target/generated-sources/jooq-postgres</directory>
</target>
</generator>
</configuration>
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>${postgresql.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
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