X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=sql%2Foperations.lisp;fp=sql%2Foperations.lisp;h=b07c068bb34fad96d4bb7495fb9cbb9c36459569;hp=0000000000000000000000000000000000000000;hb=7f0e4a65d1b425f2fa58fc7cce8296c1a6c52c2f;hpb=39d3fefaebf35a19a211d1ab6552d7ff54faccd2

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+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; ======================================================================
+;;;; File:    operations.lisp
+;;;; Updated: <04/04/2004 12:07:26 marcusp>
+;;;; ======================================================================
+;;;;
+;;;; Description ==========================================================
+;;;; ======================================================================
+;;;;
+;;;; Definition of SQL operations used with the symbolic SQL syntax. 
+;;;;
+;;;; ======================================================================
+
+(in-package :clsql-usql-sys)
+
+
+;; Keep a hashtable for mapping symbols to sql generator functions,
+;; for use by the bracketed reader syntax.
+
+(defvar *sql-op-table* (make-hash-table :test #'equal))
+
+
+;; Define an SQL operation type. 
+
+(defmacro defsql (function definition-keys &body body)
+  `(progn
+     (defun ,function ,@body)
+     (let ((symbol (cadr (member :symbol ',definition-keys))))
+       (setf (gethash (if symbol (string-upcase symbol) ',function)
+		      *sql-op-table*)
+	     ',function))))
+
+
+;; SQL operations
+
+(defsql sql-query (:symbol "select") (&rest args)
+  (apply #'make-query args))
+
+(defsql sql-any (:symbol "any") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'any :components rest))
+
+(defsql sql-all (:symbol "all") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'all :components rest))
+
+(defsql sql-not (:symbol "not") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'not :components rest))
+
+(defsql sql-union (:symbol "union") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'union :components rest))
+
+(defsql sql-intersect (:symbol "intersect") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'intersect :components rest))
+
+(defsql sql-minus (:symbol "minus") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'minus :components rest))
+
+(defsql sql-group-by (:symbol "group-by") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'group-by :components rest))
+
+(defsql sql-limit (:symbol "limit") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'limit :components rest))
+
+(defsql sql-having (:symbol "having") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'having :components rest))
+
+(defsql sql-null (:symbol "null") (&rest rest)
+  (if rest
+      (make-instance 'sql-relational-exp :operator '|IS NULL| 
+                     :sub-expressions (list (car rest)))
+      (make-instance 'sql-value-exp :components 'null)))
+
+(defsql sql-not-null (:symbol "not-null") ()
+  (make-instance 'sql-value-exp
+		 :components '|NOT NULL|))
+
+(defsql sql-exists (:symbol "exists") (&rest rest)
+  (make-instance 'sql-value-exp
+		 :modifier 'exists :components rest))
+
+(defsql sql-* (:symbol "*") (&rest rest)
+  (if (zerop (length rest))
+      (make-instance 'sql-ident :name '*)
+      ;(error 'clsql-sql-syntax-error :reason "'*' with arguments")))
+      (make-instance 'sql-relational-exp :operator '* :sub-expressions rest)))
+
+(defsql sql-+ (:symbol "+") (&rest rest)
+  (if (cdr rest)
+      (make-instance 'sql-relational-exp
+                     :operator '+ :sub-expressions rest)
+      (make-instance 'sql-value-exp :modifier '+ :components rest)))
+
+(defsql sql-/ (:symbol "/") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator '/ :sub-expressions rest))
+
+(defsql sql-- (:symbol "-") (&rest rest)
+        (if (cdr rest)
+            (make-instance 'sql-relational-exp
+                           :operator '- :sub-expressions rest)
+            (make-instance 'sql-value-exp :modifier '- :components rest)))
+
+(defsql sql-like (:symbol "like") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator 'like :sub-expressions rest))
+
+(defsql sql-uplike (:symbol "uplike") (&rest rest)
+  (make-instance 'sql-upcase-like
+		 :sub-expressions rest))
+
+(defsql sql-and (:symbol "and") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator 'and :sub-expressions rest))
+
+(defsql sql-or (:symbol "or") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator 'or :sub-expressions rest))
+
+(defsql sql-in (:symbol "in") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator 'in :sub-expressions rest))
+
+(defsql sql-|| (:symbol "||") (&rest rest)
+    (make-instance 'sql-relational-exp
+		 :operator '|| :sub-expressions rest))
+
+(defsql sql-is (:symbol "is") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator 'is :sub-expressions rest))
+
+(defsql sql-= (:symbol "=") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator '= :sub-expressions rest))
+
+(defsql sql-== (:symbol "==") (&rest rest)
+  (make-instance 'sql-assignment-exp
+		 :operator '= :sub-expressions rest))
+
+(defsql sql-< (:symbol "<") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator '< :sub-expressions rest))
+
+
+(defsql sql-> (:symbol ">") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator '> :sub-expressions rest))
+
+(defsql sql-<> (:symbol "<>") (&rest rest)
+        (make-instance 'sql-relational-exp
+                       :operator '<> :sub-expressions rest))
+
+(defsql sql->= (:symbol ">=") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator '>= :sub-expressions rest))
+
+(defsql sql-<= (:symbol "<=") (&rest rest)
+  (make-instance 'sql-relational-exp
+		 :operator '<= :sub-expressions rest))
+
+(defsql sql-count (:symbol "count") (&rest rest)
+  (make-instance 'sql-function-exp
+		 :name 'count :args rest))
+
+(defsql sql-max (:symbol "max") (&rest rest)
+  (make-instance 'sql-function-exp
+		 :name 'max :args rest))
+
+(defsql sql-min (:symbol "min") (&rest rest)
+  (make-instance 'sql-function-exp
+		 :name 'min :args rest))
+
+(defsql sql-avg (:symbol "avg") (&rest rest)
+  (make-instance 'sql-function-exp
+		 :name 'avg :args rest))
+
+(defsql sql-sum (:symbol "sum") (&rest rest)
+  (make-instance 'sql-function-exp
+		 :name 'sum :args rest))
+
+(defsql sql-the (:symbol "the") (&rest rest)
+  (make-instance 'sql-typecast-exp
+		 :modifier (first rest) :components (second rest)))
+
+(defsql sql-function (:symbol "function") (&rest args)
+	(make-instance 'sql-function-exp
+                       :name (make-symbol (car args)) :args (cdr args)))
+
+;;(defsql sql-distinct (:symbol "distinct") (&rest rest)
+;;  nil)
+
+;;(defsql sql-between (:symbol "between") (&rest rest)
+;;  nil)
+