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select-fields

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David Botton 2022-02-20 13:54:36 -05:00
parent 7e6a21261b
commit de5927f2b7
2 changed files with 46 additions and 4 deletions
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43
source/clog-data.lisp
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@ -11,9 +11,13 @@
;;; Various functions for binding data
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Implementation - data binding
;; Implementation - data load and write from objects
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;
;; data-load-plist ;;
;;;;;;;;;;;;;;;;;;;;;
(defun data-load-plist (obj plist &key (upcase-key t))
"Load a PLIST in to OBJ where key of plist is the name of slot on
OBJ and the value is the data to load. If slot is a CLOG-ELEMENT
@ -34,7 +38,11 @@ upper cased before attempting to match it to a slot if :UPCASE-KEY t
(typep (slot-value obj slot-sym) 'clog:clog-element))
(setf (text-value (slot-value obj slot-sym)) value)
(setf (slot-value obj slot-sym) value))))))))
;;;;;;;;;;;;;;;;;;;;;;
;; data-write-list ;;
;;;;;;;;;;;;;;;;;;;;;;
(defun data-write-list (obj slot-name-list)
"Returns a list, one member for each slot name in SLOT-NAME-LIST. If
a slot contains a CLOG-ELEMENT then TEXT-VALUE is used to retrieve the
@ -49,3 +57,34 @@ looking up symbol). All slot-names must be bound."
(push (text-value (slot-value obj slot)) result)
(push (slot-value obj slot) result)))
result))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Implementation - simple sql writers
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;
;; select-fields ;;
;;;;;;;;;;;;;;;;;;;
(defun select-fields (field-list &key quote-all)
"Given list of fields return a string to use in a SQL select. Use a cons to
rename field if desired. Symbols are stringified first. If :QUOTE-ALL t then
all fields are in quotes for use on case sensitive SQL dbms.
Eg. ((\"a\" \"index\") 'b :|c|) would return -> a as \"index\", B, c"
(let ((result))
(dolist (field (reverse field-list))
(if (consp field)
(setf field (format nil "~A as \"~A\"~A"
(if quote-all
(format nil "\"~A\"" (first field))
(format nil "~A" (first field)))
(second field)
(if result ", " "")))
(setf field (format nil "~A~A"
(if quote-all
(format nil "\"~A\"" field)
(format nil "~A" field))
(if result ", " ""))))
(push field result))
(format nil "~{~A~}" result)))