坚持使用GORM的LocalDate列表 [英] Persist a list of LocalDate with GORM

问题描述

我试图在grails中保留joda LocalDate的列表。我现在所拥有的是这样的：

I'm trying to persist a list of joda LocalDate in grails. What I have right now is something like this:

package com.publidirecta

import org.joda.time.LocalDate

class Evento {

    List <LocalDate> fechas = []

    static hasMany = [fechas:LocalDate]
}

，我得到以下错误：

and I get the following error :

MappingException: Missing type or column for column[fechas_persistent_local_date] on domain[Evento] referencing[org.jadira.usertype.dateandtime.joda.PersistentLocalDate]
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread

我试过了hasMany属性，但它也不工作（只是没有添加任何东西）

I tried with out the hasMany property, but doesnt work either(just didnt add anything)

推荐答案

Alidad建议您将LocalDate换成新的实体，并与之建立一对多的关系这个实体。
此外，您必须注意将 LocalDate 类型映射到数据库，因为这不是Hibernate原生支持的类型。查看涵盖该主题的指南。

As Alidad suggested you should wrap the LocalDate with a new entity and have a on-to-many relationship with this entity. In addition you will have to take care of mapping the LocalDate type to the database since this is not a type natively supported by Hibernate. Take a look at this guide which covers the topic.

使用用户类型库你的类应该看起来像这样：

Using the User Type library your class should look something like:

package com.publidirecta

class Evento {

    static hasMany = [fechas: Fecha]

    List <Fecha> fechas = []
}

和

And

import org.jadira.usertype.dateandtime.joda.PersistentLocalDate
import org.joda.time.LocalDate

class Fecha {
    LocalDate date

    static mapping = {
        date type: PersistentLocalDate
    }
}

确保将以下内容添加到 BuildConfig 中：

Make sure your add the following to your BuildConfig:

dependencies {
        compile 'org.jadira.usertype:usertype.jodatime:1.9'
    }

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