Author: lgiessmann Date: Wed Aug 3 12:22:06 2011 New Revision: 706

Log: trunk: added the infrastructure for the caching of topics and their psis => can be used for /json/psis

Modified: trunk/src/rest_interface/set-up-json-interface.lisp

Modified: trunk/src/rest_interface/set-up-json-interface.lisp ============================================================================== --- trunk/src/rest_interface/set-up-json-interface.lisp Wed Aug 3 11:18:51 2011 (r705) +++ trunk/src/rest_interface/set-up-json-interface.lisp Wed Aug 3 12:22:06 2011 (r706) @@ -12,8 +12,12 @@ ;caching tables (defparameter *type-table* nil "Cointains integer==OIDs that represent a topic instance of a vylid type-topic") -(defparameter *instance-table* nil "Cointains integer==OIDs that represent a topic +(defparameter *instance-table* nil "Contains integer==OIDs that represent a topic instance of a valid instance-topic") +(defparameter *overview-table* nil "Is of the following structure + ((:topic <oid> :psis (<oid> <oid> <...>)) (...)) + that represents a list of topics and their + valid psi object id's")

;the prefix to get a fragment by the psi -> localhost:8000/json/get/<fragment-psi> (defparameter *json-get-prefix* "/json/get/(.+)$") @@ -602,4 +606,50 @@ (when psis-of-top (format t ".") (create-latest-fragment-of-topic (uri (first psis-of-top)))))) - (elephant:get-instances-by-class 'd:TopicC))) \ No newline at end of file + (elephant:get-instances-by-class 'd:TopicC))) + + +(defun update-list (top psis) + "Sets the psi list that is bound to the topic top to the passed + psi list." + (declare (TopicC top) + (List psis)) + (let ((node + (find-if (lambda(item) + (= (getf item :topic) (elephant::oid top))) + *overview-table*)) + (psi-oids (map 'list #'elephant::oid psis))) + (if node + (setf (getf node :psis) psi-oids) + (push (list :topic (elephant::oid top) :psis psi-oids) + *overview-table*)))) + + +(defun remove-psis-from-list (top psis) + "Removes the passed psis from the psi list that is bound + to the passed topic." + (declare (TopicC top) + (List psis)) + (let ((node + (find-if (lambda(item) + (= (getf item :topic) (elephant::oid top))) + *overview-table*)) + (psi-oids (map 'list #'elephant::oid psis))) + (when node + (dolist (psi psi-oids) + (setf (getf node :psis) (delete psi (getf node :psis) :test #'=)))))) + + +(defun add-to-list (top psis) + "Adds the psis contained in the list psis to the psi list that is + bound to the psi list of the topic top." + (declare (TopicC top) + (List psis)) + (let ((node + (find-if (lambda(item) (= (getf item :topic) (elephant::oid top))) + *overview-table*)) + (psi-oids (map 'list #'elephant::oid psis))) + (if node + (dolist (psi psi-oids) + (pushnew psi (getf node :psis) :test #'=)) + (push (list :topic top :psis psi-oids) *overview-table*)))) \ No newline at end of file