--- /dev/null
+;;;; -*- 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)
+
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