Author: lgiessmann Date: Tue Nov 17 06:21:40 2009 New Revision: 142

Log: added the generic function add-reifier which adds a reifier to a reifiable object. currently this function does not merge reifier-topics

Modified: trunk/src/model/datamodel.lisp

Modified: trunk/src/model/datamodel.lisp ============================================================================== --- trunk/src/model/datamodel.lisp (original) +++ trunk/src/model/datamodel.lisp Tue Nov 17 06:21:40 2009 @@ -103,6 +103,7 @@ :create-latest-fragment-of-topic :reified :reifier + :add-reifier

:*current-xtm* ;; special variables :*TM-REVISION* @@ -620,6 +621,54 @@ (setf (slot-value construct 'reifier) topic) (setf (reified topic) construct)))

+(defgeneric add-reifier (construct reifier-uri) + (:method ((construct ReifiableConstructC) reifier-uri) + (let ((err "From add-reifier(): ")) + (let ((item-identifier + (elephant:get-instance-by-value 'Item-IdentifierC 'uri reifier-uri))) + (unless item-identifier + (error "~ano item-identifier could be found with the uri ~a" + err reifier-uri)) + (let ((reifier-topic (identified-construct item-identifier))) + (unless (typep reifier-topic 'TopicC) + (error "~aitem-identifier ~a must be bound to a topic, but is ~a" + err reifier-uri (type-of reifier-topic))) + (cond + ((and (not (reifier construct)) + (not (reified reifier-topic))) + (setf (reifier construct) reifier-topic) + (setf (reified reifier-topic) construct)) + ((and (not (reified reifier-topic)) + (reifier construct)) + ;merge topics + t) + ((and (not (reifier construct)) + (reified reifier-topic)) + (error "~a~a reifies already another object ~a" + err reifier-uri (reified reifier-topic))) + (t + (when (not (eql (reified reifier-topic) construct)) + (error "~a~a reifies already another object ~a" + err reifier-uri (reified reifier-topic))) + ;merge both topics or throw an error + t))))) + construct)) + + +(defgeneric merge-reifier-topics (old-topic new-topic) + (:method ((old-topic TopicC) (new-topic TopicC)) + ;move all item-identifiers to the new topic ;check if they are already existing + ;move all subject-locators to the new topic ;check if they are already existing + ;move all subject-identifiers to the new topic ;check if they are already existing + ;move all names to the new topic ;check if they are already existing + ;move all occurrences to the new topic ;check if they are already existing + ;check all objects where the topic is the type of + ;check all roles where the topic is a player of + ;check all objects where the topic is a scope of + (format t "~a~a" old-topic new-topic) + )) + + (defgeneric item-identifiers (construct &key revision) (:method ((construct ReifiableConstructC) &key (revision *TM-REVISION*)) (filter-slot-value-by-revision construct 'item-identifiers :start-revision revision)))