[英]Implementing a Factory Pattern with CSLA.NET
I would like to implement Factory Pattern in CSLA. 我想在CSLA中实现Factory Pattern。 I can use an abstract base class or an interface for the abstraction. 我可以使用抽象基类或抽象接口。 I have decided to use an abstract class, only because I have certain common functionality such as, saving to store, retrieving from store, and deletion of the record. 我决定使用抽象类,只是因为我具有某些通用功能,例如保存到存储,从存储中检索以及删除记录。 Also, some properties that would apply to all implemented objects. 同样,一些属性将应用于所有已实现的对象。
C# only allows for inheritance from one class, so I can either use BusinessBase or the abstract class. C#仅允许从一个类继承,因此我可以使用BusinessBase或抽象类。 I would also like the concrete types to have their own set of business rules. 我还希望具体类型具有自己的一套业务规则。 How can this be done with CSLA? 如何使用CSLA?
If I do what I have listed below, will the rules in both the abstract class as well as the concrete class get fired? 如果我做下面列出的事情,那么抽象类和具体类中的规则都会被解雇吗?
Some code ... 一些代码...
Abstract class: 抽象类:
public class Form : BusinessBase<Form> {
private static PropertyInfo<string> FormNameProperty = RegisterProperty<string>(c => c.FormName);
public string FormName
{
get { return GetProperty(FormNameProperty); }
}
public abstract void LoadContent();
protected override void AddBusinessRules()
{
// business rules that are commmon for all implementations
}
}
Concrete implementation: 具体实现:
public class FormA : Form {
private static PropertyInfo<string> FirstNameProperty = RegisterProperty<string>(c => c.FirstName);
public string FirstName
{
get { return GetProperty(FirstNameProperty); }
}
public override void LoadContent(){
// some custom code
}
protected override void AddBusinessRules()
{
// business rules that only apply to this class
}
}
Factory: 厂:
public static class FormFactory{
public static Form GetForm(string formanmae) {
Type formType = GetFormType(formName);
if(formType == null)
return null;
var form = Activator.CreateInstance(formType) as ReferralForm;
return form;
}
}
Instead of using Activator.CreateInstance, you should use the Csla DataPortal. 而不是使用Activator.CreateInstance,您应该使用Csla DataPortal。
var form = (Form)Csla.DataPortal.Create(formType, new Csla.Server.EmptyCriteria);
This way you are creating your business object using the Csla way, so any rules that should be run will be. 这样,您就可以使用Csla方法创建业务对象,因此应该运行的所有规则都可以。
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