The issue for the light-codegen for master branch (JDK11)

[GavinChenYan]

If user use the supportDB config value in the config.json

"supportDb": true,

The light-codegen will generate datasource config in the service.yml:

'''

• javax.sql.DataSource:
  • com.zaxxer.hikari.HikariDataSource:
    DriverClassName:
    jdbcUrl:
    username:
    password:
    maximumPoolSize: 10
    useServerPrepStmts: true
    cachePrepStmts: true
    cacheCallableStmts: true
    prepStmtCacheSize: 10
    prepStmtCacheSqlLimit: 2048
    connectionTimeout: 2000

'''

And in the values.yml, light-codegen output:

service.singletons:

I think user may chose different ways for datasource, if user use light--4j data-source module，then it will use datasource.yml file and user can flexibly choose the way for database process.

So I would like suggest to remove the datasource in the setting in the service yam and change it to:

singletons: ${service.singletons:}

And user can only deal with on config file: values.yml