Add methods for externalizing links to SlingHttpServletRequest
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Key: SLING-1629
URL: https://issues.apache.org/jira/browse/SLING-1629
Project: Sling
Issue Type: New Feature
Components: API, Engine
Reporter: Alexander Klimetschek
Priority: Minor
When creating links in responses there are two cases:
1) create it for use by the browser: URLs relative to the current request
2) link used by external apps: absolute URL including hostname etc.
For 1), you can already use ResourceResolver.map(request, path) (important to
use the request-based here).
For 2), when you explicitly want absolute URLs (eg. for rss feeds, links in
emails, etc.), the ResourceResolver map methods will only add a host/port if
such a configuration is part of /etc/map. There is no default to use the
host/port from the current request.
In order to provide convenient short access to those features, an externalize
method on the sling request object is better for both cases:
case 1) relative url
slingRequest.externalize("/my/path")
same as slingRequest.getResourceResolver().map(slingRequest, "/my/path"))
case 2) absolute url
slingRequest.externalize("http", "/my/path")
produces e.g. http://localhost:8080/my/path
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