grails域的自定义主键

Question

我有一个遗留数据库（MSSQL），我试图通过grails连接。该表有一个名为＆＃34; ClaimSubmissionId＆＃34;的主键。如何将此密钥映射到grails域？ 目前我的grails域看起来像这样：

class ClaimSubmission {

    Integer ClaimSubmissionId

    ... Other Fields ...

    static constraints = {
    }

    static mapping = {
        datasource("mssql_external")
        table 'ClaimSubmissionRequests'
        version false
        id generator: 'identity', name: "ClaimSubmissionId", type: 'Integer', column:"ClaimSubmissionId"

        columns{
//            id column: "ClaimSubmissionId"
            ... Other Fields ...
        }
    }
}

字段＆＃34; ClaimSubmissionId＆＃34;应作为主键，必须是唯一的，自动分配的和增量的。目前我收到此错误

Error evaluating ORM mappings block for domain [com.company.project.ClaimSubmission]:  null

我也尝试将id字段放在列闭包中，如上面注释部分所示，但是没有用。

Answer 1

这应该做：

class ClaimSubmission {
    Integer claimSubmissionId

    static mapping = {
        datasource("mssql_external")
        table 'ClaimSubmissionRequests'
        version false

        id column: "ClaimSubmissionId", //actual column name from db
           name: "claimSubmissionId",   //used lower camelCase for field names
           type: 'integer',             //lower case 
           generator: 'identity'

    }
}