grails 2.2.2 service don't know domain model: "No signature of method"

Question

I have a grails-plugin called "listadmin" there is a domain model "Liste":

package listadmin
class Liste {

    String internal_name
    String public_name

    Boolean edtiable = true
    Boolean visible = true

    static hasMany = [eintrage : ListenEintrag]
    static constraints = {
        internal_name(unique : true , blank : false);
    }
    String toString() {
        "${public_name}"
    }

}

I have service called "SECO_ListenService" in the same module (grails-plugin):

package listadmin

class SECO_ListenService {

    def getEntriesOfList(String intnalListName) {
        def aList = Liste.findByInternal_name(intnalListName)
        return aList
    }
}

Now I try to call this service from an other module (grails-plugin) called "institutionadmin". The SECO_ListenService should return a list of strings for an select of a domain model in the inistitutionadmin:

package institutionadmin

import listadmin.SECO_ListenService

class Einrichtung {


    Long einrichtungs_type
    Long type_of_conzept
    int anzahl_gruppen
    int anzahl_kinder_pro_Gruppe
    String offnungszeiten
    static hasMany = [rooms : Raum]
    static constraints = {
        def aList  = []
        def sECO_ListenService = new SECO_ListenService()
        aList=sECO_ListenService.getEntriesOfList("einrichtung_type")
        einrichtungs_type(inList: aList)
    }
}

If I try to run this application with the both modules. I get the following error:

Caused by MissingMethodException: No signature of method: listadmin.Liste.methodMissing() is applicable for argument types: () values: []

It seemed to be that the service class don't know the "Liste"-domain-model. But I don't know where the error is. I also tried to call other standard methods like "findAll" but without any success.

Has anybody an idea where my mistake could be?

Answer 1

To get a service in a static context you need to access the grailsApplication spring bean. This can be done thought Holders. Example:

class MyService {
  List<String> getAvailable() {
    return ['A','B','C']
  }
}

class MyDomainClass {

  String something

  static constraints = {
    something inList: getSomethingList()
  }

  static List<String> getSomethingList() {
    def myService = Holders.grailsApplication.mainContext.getBean('myService')
    return myService.getAvailable()
  }

}