[ http://issues.apache.org/jira/browse/TAPESTRY-689?page=all ]
Howard M. Lewis Ship resolved TAPESTRY-689:
-------------------------------------------
Resolution: Won't Fix
Assign To: Howard M. Lewis Ship
Within the Tapestry community, there is a constant call for two things:
1) More features!
2) Backwards compatibility!
These two desires are at odds.
My goal going forward is to continue to shrink the amount of Tapestry API
exposed to Tapestry developers.
This can be summarized as "protected considered harmful"; adding protected
methods is inviting unknown customizations by end developers into main line
code. This, in turn, makes it harder to evolve the framework without breaking
backwards compatibility.
If you want to create a page-like service, please do so ... but we can't have
the real page service's code held hostage to unknown requirements in the user
community. Sorry.
> PageService#getLink() overriding
> --------------------------------
>
> Key: TAPESTRY-689
> URL: http://issues.apache.org/jira/browse/TAPESTRY-689
> Project: Tapestry
> Type: Wish
> Components: Framework
> Versions: 4.0
> Reporter: Alexander Kundirenko
> Assignee: Howard M. Lewis Ship
>
> getLink method cannot be overidden now because:
> 1) _linkFactory is private
> 2) parameters map is local to this method
> Could you use TemplateMethod pattern to allow users to add their custom
> parameters (or modify existing).
> F.e. I want to restrict caching by adding timestamp to path:
> public ILink getLink(IRequestCycle cycle, boolean post, Object parameter)
> {
> Defense.isAssignable(parameter, String.class, "parameter");
> Map parameters = new HashMap();
> parameters.put(ServiceConstants.SERVICE, getName());
> parameters.put(ServiceConstants.PAGE, parameter);
> addParameters(parameters); //ADDED METHOD CALL
>
> return _linkFactory.constructLink(cycle, post, parameters, true);
> }
>
> //ADDED METHOD
> protected void addParameters(Map parameters)
> {
> parameters.put("nocache", String.valueOf(System.currentTimeMillis()));
> }
> Thank you
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