2

给定具有 2 个键 keyA 和 keyB 的实体“MultipleKeysEntity”。

KeyA 是枚举类型；KeyB 属于 guid 类型。

由于 BOM 生产者为 Equals 方法生成的代码没有考虑 keyA。这是正常行为吗？

<cf:entity name="MultipleKeysEntity" defaultUsePersistenceDefaultValue="false" baseEqualsOverride="false" setType="List" namespace="Project.Namespace" >
    <cf:property name="keyA" persistenceIdentity="false" key="true" typeName="{0}.Enumeration" />
    <cf:property name="keyB" key="true" />
    <cf:property name="property" typeName="decimal" /></cf:entity> 

<cf:enumeration name="Enumeration" namespace="Project.Namespace" >
<cf:enumerationValue name="ONE" />
<cf:enumerationValue name="TWO" /></cf:enumeration>

下面生成的代码

public virtual bool Equals(Project.Namespace.MultipleKeysEntity multipleKeysEntity)
    {
        if ((multipleKeysEntity == null))
        {
            return false;
        }
        if ((this.keyB == CodeFluentPersistence.DefaultGuidValue))
        {
            return base.Equals(multipleKeysEntity);
        }
        return (this.keyB.Equals(multipleKeysEntity.keyB) == true);
    }

感谢您的回答，

29/08/2016 编辑

将属性 checkDefaultValue 设置为 true 后，Equals 方法按预期使用该属性。但是枚举的第一个值随后被视为“无效”值。

特别是 MultipleKeysEntityCollection::baseAdd() 方法阻止我使用值“ONE”

protected virtual int BaseAdd(WcfServices.Model.Association.MultipleKeysEntity multipleKeysEntity)
        {
            if ((multipleKeysEntity == null))
            {
                throw new System.ArgumentNullException("multipleKeysEntity");
            }
            if (((multipleKeysEntity.keyA == WcfServices.Model.Association.Enumeration.ONE) 
                        || (multipleKeysEntity.keyB.Equals(CodeFluentPersistence.DefaultGuidValue) == true)))
            {
                CodeFluent.Runtime.CodeFluentRuntimeException.Throw("invalidEntityKey", "keyA, keyB", "multipleKeysEntity", "WcfServices.Model.Association.MultipleKeysEntity");
            }
            int localAdd = this.BaseList.Count;
            this.BaseList.Add(multipleKeysEntity);
            this.OnCollectionChanged(new CodeFluent.Runtime.Utilities.IndexedCollectionChangeEventArgs(System.ComponentModel.CollectionChangeAction.Add, multipleKeysEntity, localAdd));
            this.OnListChanged(new System.ComponentModel.ListChangedEventArgs(System.ComponentModel.ListChangedType.ItemAdded, localAdd));
            return localAdd;
        }

Equals 方法的代码如下：

public virtual bool Equals(WcfServices.Model.Association.MultipleKeysEntity multipleKeysEntity)
        {
            if ((multipleKeysEntity == null))
            {
                return false;
            }
            if (((this.keyA == WcfServices.Model.Association.Enumeration.ONE) 
                        || (this.keyB == CodeFluentPersistence.DefaultGuidValue)))
            {
                return base.Equals(multipleKeysEntity);
            }
            return ((this.keyA.Equals(multipleKeysEntity.keyA) && this.keyB.Equals(multipleKeysEntity.keyB)) 
                        == true);
        }
4

1 回答 1

1

默认情况下，复合键的枚举属性不用于相等比较。您可以通过设置 xml 属性来指示 BOM 生产者使用该属性cfom:checkDefaultValue="true"：

<cf:property name="Id2" cfom:checkDefaultValue="true" />
于 2016-08-29T09:22:20.407 回答