Grails hasOne关系真的是双向的吗？

我想对域关联进行反射来为REST式WS（脚手架）自动生成JSON/XML格式的类描述符文件。对于HasOne（假设是双向的），我试图使用Association对象中的referencedPropertyName来显示反向键（这是WS必须显示的唯一信息）。Grails hasOne关系真的是双向的吗？

不过，我发现hasOne关联没有正确初始化。

以下是我使用Grails 2.3.7进行的测试。

我的领域是：

class House { 

    Long number 
    Integer inhabitants 

    static hasOne = [ roof: Roof ] 
    static hasMany = [ doors: Door ] 

    static constraints = { 
     roof nullable: true, unique: true 
    } 
} 

class Roof { 

    String color 
    House house 

    static constraints = { 
    } 
}

然后：

import org.grails.datastore.mapping.model.types.Association 
import org.junit.Test 

import spock.lang.* 
import test.House 
class AssociationsSpec { 
    @Test 
    void "test something"() { 
     House.gormPersistentEntity.associations.each { Association association -> 
      String key = association.name 
      println association.properties 
      assert association.bidirectional 
     } 
    } 
}

该测试失败：

Assertion failed: 
assert association.bidirectional 
     |   | 
     |   false 
     test.House->roof 
    at test.AssociationsSpec$_test_something_closure1.doCall(AssociationsSpec.groovy:26) 
    at test.AssociationsSpec.test something(AssociationsSpec.groovy:23)

附加信息（的println association.properties）：

[list:false, type:interface java.util.Set, owner:org.[email protected]149a797, class:class org.codehaus.groovy.grails.domain.GrailsDomainClassPersistentEntity$5, cascadeOperations:[ALL], inverseSide:test.Door->house, capitilizedName:Doors, bidirectional:true, referencedPropertyName:house, associatedEntity:org.[email protected]99a9c3, mapping:null, circular:false, owningSide:true, name:doors, fetchStrategy:EAGER] 

[capitilizedName:Roof, bidirectional:false, referencedPropertyName:null, circular:false, owningSide:true, name:roof, list:false, type:class test.Roof, owner:org.[email protected]149a797, class:class org.codehaus.groovy.grails.domain.GrailsDomainClassPersistentEntity$4, cascadeOperations:[ALL], inverseSide:null, associatedEntity:org.[email protected]16289cc, mapping:null, foreignKeyInChild:true, fetchStrategy:EAGER]

谢谢

来源

2014-10-07 user2108278