Chain of Responsibility Pattern: is it a good practice to have interdependent handlers?

Posted by wei on Stack Overflow See other posts from Stack Overflow or by wei
Published on 2010-05-16T22:55:06Z Indexed on 2010/05/16 23:00 UTC
Read the original article Hit count: 182

Filed under:

chain-of-responsibility

I have this scenario: I have a chain of query handlers, the first is to query the cache, if the cache can't answer it or the answer is stale, then hit a database, if it can't find the answer or the answer is stale again, then query a remote web service.

But I am not sure if this is the right way to use this pattern, since the work flow is pretty much fixed, and the cache and database handlers depend on the next step's return result to refresh its records.

Related posts about chain-of-responsibility

C# Chain-of-responsibility with delegates

as seen on Stack Overflow - Search for 'Stack Overflow'
For my understanding purpose i have implemented Chain-Of-Responsibility pattern. //Abstract Base Type public abstract class CustomerServiceDesk { protected CustomerServiceDesk _nextHandler; public abstract void ServeCustomers(Customer _customer); public void SetupHadler(CustomerServiceDesk _nextHandler) … >>> More
What would you like to correct and/or improve in this java implementation of Chain Of Responsibility

as seen on Stack Overflow - Search for 'Stack Overflow'
package design.pattern.behavioral; import design.pattern.behavioral.ChainOfResponsibility.*; public class ChainOfResponsibility { public static class Chain { private Request[] requests = null; private Handler[] handlers = null; public Chain(Handler[]… >>> More
Chain of Responsibility Pattern: is it a good practice to have interdependent handlers?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have this scenario: I have a chain of query handlers, the first is to query the cache, if the cache can't answer it or the answer is stale, then hit a database, if it can't find the answer or the answer is stale again, then query a remote web service. But I am not sure if this is the right way… >>> More
Passing data between objects in Chain of Responsibility pattern

as seen on Stack Overflow - Search for 'Stack Overflow'
While implementing the Chain of Responsibility pattern, i came across a dilemma om how to pass data between objects in the chain. The datatypes passed between object in the chain can differ for each object. As a temporary fix I had created a Static class containing a stack where each object in the… >>> More
Would you rather use a Singleton or dispatch another class' event through a Chain of Responsibility?

as seen on Stack Overflow - Search for 'Stack Overflow'
In general, what would make your program more maintainable? I know a lot of folks that make heavy use of Singletons, but that seems like a cop-out, which creates a kind of global junk drawer organization. >>> More

Developer IT

Chain of Responsibility Pattern: is it a good practice to have interdependent handlers? - Developer IT

Chain of Responsibility Pattern: is it a good practice to have interdependent handlers?

chain-of-responsibility

Related posts about chain-of-responsibility

C# Chain-of-responsibility with delegates

What would you like to correct and/or improve in this java implementation of Chain Of Responsibility

Chain of Responsibility Pattern: is it a good practice to have interdependent handlers?

Passing data between objects in Chain of Responsibility pattern

Would you rather use a Singleton or dispatch another class' event through a Chain of Responsibility?

Categories cloud