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Technical Overview
  internal package Foswiki::Access  
A singleton object of this class manages the access control database.
 ClassMethod new($session) 
Constructor.
 ObjectMethod finish() 
Break circular references.
 ObjectMethod getReason() → $string 
Return a string describing the reason why the last access control failure
occurred.
 ObjectMethod haveAccess($mode, $User, $web, $topic, $attachment) → $boolean 
 ObjectMethod haveAccess($mode, $User, $meta) → $boolean 
 ObjectMethod haveAccess($mode, $User, $address) → $boolean 
 
-  $mode- 'VIEW', 'CHANGE', 'CREATE', etc. (defaults to VIEW)
-  $cUID- Canonical user id (defaults to current user)
 
Check if the user has the given mode of access to the topic. This call
may result in the topic being read.
 ObjectMethod getCacheEntry($meta, $mode, $cUID) → $boolean 
returns the cached access result for a given meta object
 ObjectMethod setCacheEntry($meta, $mode, $cUID, $boolean) → $boolean 
caches the result for a computed access right
 ObjectMethod unsetCacheEntry($meta, $mode, $cUID)  
deletes a cache result for a computed access right