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凯恩戈姆故障处理程序

发布于 2024-10-28 21:03:36 字数 84 浏览 4 评论 0原文

根据 Cairngorm 架构，我们在每个服务的每个命令类中始终有一个故障处理程序。

我们如何创建一个类来处理所有服务的故障处理程序事件。

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情话已封尘 2024-11-04 21:03:36

你所说的“总是有一个错误处理程序”是指契约吗？就像实现接口一样？

您可以编写一个所有其他命令类扩展的基命令类。基类可以实现错误处理程序，所有其他子类可以选择覆盖它。

public class BaseCommand implements ICommand
{
    public function execute( event:Event ):void 
    {

    }

    public function onFault( event:Event ):void 
    {

    }
}

// -- no need to implement onFault in sub-class
public class MyCommand extends BaseCommand
{
    public function execute( event:Event ):void 
    {

    }
}

By "always having a fault handler", do you mean by contract, as in in implementing an interface?

You can write a base command class that all of your other command classes extend. The base can implement the on fault handler and all other sub-classes can optionally override it.

public class BaseCommand implements ICommand
{
    public function execute( event:Event ):void 
    {

    }

    public function onFault( event:Event ):void 
    {

    }
}

// -- no need to implement onFault in sub-class
public class MyCommand extends BaseCommand
{
    public function execute( event:Event ):void 
    {

    }
}

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霊感 2024-11-04 21:03:36

创建一个基类，从中扩展所有其他类，并将故障处理程序放在那里。例如：
FaultHandlerCairngormCommand 扩展 SequenceCommand 实现 IResponder

[BaseCommand.as]

public class BaseCommand extends SequenceCommand implements IResponder
{
    public function execute( event:CairngormEvent ):void 
    {
        super.execute(event);
    }

    public function fault( info:Object ):void 
    {
        throw new Error("Generic request failure"); //or handle as you please
    }
    public function result(data:Object):void
    {
        throw new Error("The result method implementation defined in IResponder for all extensions of BaseCommand must be overrriden in any sub-class");
    }
}

[MyCommand.as]

// -- no need to implement onFault in sub-class
public class MyCommand extends BaseCommand
{
    public function execute( event:Event ):void 
    {
        remoteObjectDelegate.doYourServerOperation(this);
    }
    override public function result(data:Object):void
    {
        trace("happily handling the data"); //without this override an error will be thrown so the developer will know to correct
    }
}

Create a base class that you extend all other classes from, put the fault handler there. Such as:
FaultHandlerCairngormCommand extends SequenceCommand implements IResponder

[BaseCommand.as]

public class BaseCommand extends SequenceCommand implements IResponder
{
    public function execute( event:CairngormEvent ):void 
    {
        super.execute(event);
    }

    public function fault( info:Object ):void 
    {
        throw new Error("Generic request failure"); //or handle as you please
    }
    public function result(data:Object):void
    {
        throw new Error("The result method implementation defined in IResponder for all extensions of BaseCommand must be overrriden in any sub-class");
    }
}

[MyCommand.as]

// -- no need to implement onFault in sub-class
public class MyCommand extends BaseCommand
{
    public function execute( event:Event ):void 
    {
        remoteObjectDelegate.doYourServerOperation(this);
    }
    override public function result(data:Object):void
    {
        trace("happily handling the data"); //without this override an error will be thrown so the developer will know to correct
    }
}

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