从MongoDB迁移到PostgreSQL Groovy应用程序 [英] Migration from MongoDB to PostgreSQL Groovy Application

问题描述

我正在将groovy应用程序中的mongoDB迁移到PostgreSQL。我是groovy平台的新手。在其中一个groovy文件中它们是：

静态mapWith =mongo

我完全不清楚这是什么意思。根据 http：//grails.github。 io / grails-doc / 3.0.x / ref / Domain％20Classes / mapWith.html

$ b

mapWith

用途

mapWith静态属性增加了控制如果一个域
类被持久化。

示例

  class Airport {
 static mapWith =none
 
} 
  

我也经历了这个问题通过开发模式中的元编程删除simpledb mapWith

我知道在我的grails应用程序中，

静态mapWith =mongo

可能使用mongoDB插件。我不知道我是否正确。那么我需要为这个PostgreSQL迁移行做些什么？

解决方案

通常你必须删除这行，就像SQL基于GORM的默认值是好的

I am working on migration of mongoDB to PostgreSQL on groovy application. I am new to groovy platform. In one of the groovy file their is :

static mapWith = "mongo"

I am exactly not clear what does it means. According to http://grails.github.io/grails-doc/3.0.x/ref/Domain%20Classes/mapWith.html

mapWith

Purpose

The mapWith static property adds the ability to control if a domain class is being persisted.

Examples

class Airport {
  static mapWith = "none"

}

I also went through this question Remove simpledb mapWith by meta programming in dev mode

and I got an idea that in my grails application,

static mapWith = "mongo"

might be using mongoDB plugin. I don't know I am correct or not. So what does I need to do with this line for PostgreSQL migration?

解决方案

Usually you have to remove the line, as for SQL-based GORM-ing the defaults are fine

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