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Refactor function to return backlinks to item at point 

Extract function to return actual list of backlinks, to later use it for
extracting backlinks of item at point and all its parents.
This commit is contained in:
Daniel - 2022-05-05 22:08:02 +02:00
parent 41dbea2ebd
commit 9184756c07
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1 changed files with 36 additions and 17 deletions
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53
site-lisp/db-org.el
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@ -955,6 +955,35 @@ Show _b_acklinks to current item."
("O" (db/org-add-link-to-other-item t)) ("O" (db/org-add-link-to-other-item t))
("b" db/org-find-links-to-current-item)) ("b" db/org-find-links-to-current-item))
(defun db/org--backlinks-for-id (item-id &optional org-ql-match archives)
"Return list of ID properties of Org Mode items linking to ITEM-ID.
If the optional ORG-QL-MATCH is given and is a valid `org-ql' query in
sexp syntax, filter the list for all items matching this query.
If ARCHIVES is given, also include archive files.
The search is conducted over all files returned by
`org-agenda-files' including archives, as well as all files
referenced in `org-agenda-text-search-extra-files'."
(let ((extra-files org-agenda-text-search-extra-files)
files)
;; Determine files to search through; ignore `agenda-archive' in
;; `org-agenda-text-search-extra-files', as we already handle this when
;; calling `org-agenda-files'.
(setq files (org-agenda-files t archives))
(when (eq (car extra-files) 'agenda-archives)
(pop extra-files))
(setq files (append files extra-files))
(org-ql-query :select '(org-id-get-create)
:from files
:where (let ((link-expression `(link :target ,item-id)))
(if org-ql-match
`(and ,link-expression ,org-ql-match)
link-expression)))))
(defun db/org-backlinks-to-item-at-point (&optional org-ql-match archives) (defun db/org-backlinks-to-item-at-point (&optional org-ql-match archives)
"Return list of Org links to item at point. "Return list of Org links to item at point.
@ -967,28 +996,18 @@ If ARCHIVES is given, also include archive files.
The search is conducted over all files returned by The search is conducted over all files returned by
`org-agenda-files' including archives, as well as all files `org-agenda-files' including archives, as well as all files
referenced in `org-agenda-text-search-extra-files'." referenced in `org-agenda-text-search-extra-files'."
(let ((id-of-item-at-point (org-id-get))
(extra-files org-agenda-text-search-extra-files) (let ((id-of-item-at-point (org-id-get)))
files)
(unless id-of-item-at-point (unless id-of-item-at-point
(user-error "Item at point does not have an ID property set, cannot determine backlinks")) (user-error "Item at point does not have an ID property set, cannot determine backlinks"))
;; Determine files to search through; ignore `agenda-archive' in (mapcar #'(lambda (id)
;; `org-agenda-text-search-extra-files', as we already handle this when (list (org-link-make-string (format "id:%s" id)
;; calling `org-agenda-files'. (org-entry-get (org-id-find id 'marker) "ITEM"))))
(setq files (org-agenda-files t archives)) (db/org--backlinks-for-id id-of-item-at-point org-ql-match archives))))
(when (eq (car extra-files) 'agenda-archives)
(pop extra-files))
(setq files (append files extra-files))
(org-ql-query :select '(list (org-link-make-string (format "id:%s" (org-id-get-create)) ;; TODO: function to return links to all backlinks of self and parents
(org-entry-get (point) "ITEM")))
:from files
:where (let ((link-expression `(link :target ,id-of-item-at-point)))
(if org-ql-match
`(and ,link-expression ,org-ql-match)
link-expression)))))
;;; End ;;; End