sql/operations.lisp

   1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;;
   4 ;;;; $Id$
   5 ;;;;
   6 ;;;; Definition of SQL operations used with the symbolic SQL syntax.
   7 ;;;;
   8 ;;;; This file is part of CLSQL.
   9 ;;;;
  10 ;;;; CLSQL users are granted the rights to distribute and use this software
  11 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
  12 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
  13 ;;;; *************************************************************************
  14
  15 (in-package #:clsql-sys)
  16
  17 ;; Keep a hashtable for mapping symbols to sql generator functions,
  18 ;; for use by the bracketed reader syntax.
  19
  20 (defvar *sql-op-table* (make-hash-table :test #'equal))
  21
  22
  23 ;; Define an SQL operation type.
  24
  25 (defmacro defsql (function definition-keys &body body)
  26   `(progn
  27      (defun ,function ,@body)
  28      (let ((symbol (cadr (member :symbol ',definition-keys))))
  29        (setf (gethash (if symbol (symbol-name-default-case symbol) ',function)
  30                       *sql-op-table*)
  31              ',function))))
  32
  33
  34 ;; SQL operations
  35
  36 (defsql sql-query (:symbol "select") (&rest args)
  37   (apply #'make-query args))
  38
  39 (defsql sql-any (:symbol "any") (&rest rest)
  40   (make-instance 'sql-function-exp
  41                  :name 'any :args rest))
  42
  43 (defsql sql-some (:symbol "some") (&rest rest)
  44   (make-instance 'sql-function-exp
  45                  :name 'some :args rest))
  46
  47 (defsql sql-all (:symbol "all") (&rest rest)
  48   (make-instance 'sql-function-exp
  49                  :name 'all :args rest))
  50
  51 (defsql sql-not (:symbol "not") (&rest rest)
  52   (make-instance 'sql-value-exp
  53                  :modifier 'not :components rest))
  54
  55 (defsql sql-union (:symbol "union") (&rest rest)
  56   (make-instance 'sql-set-exp
  57                  :operator 'union :sub-expressions rest))
  58
  59 (defsql sql-intersect (:symbol "intersect") (&rest rest)
  60   (make-instance 'sql-set-exp
  61                  :operator 'intersect :sub-expressions rest))
  62
  63 (defsql sql-except (:symbol "except") (&rest rest)
  64   (make-instance 'sql-set-exp
  65                  :operator 'except :sub-expressions rest))
  66
  67 (defsql sql-minus (:symbol "minus") (&rest rest)
  68   (make-instance 'sql-set-exp
  69                  :operator 'minus :sub-expressions rest))
  70
  71 (defsql sql-limit (:symbol "limit") (&rest rest)
  72   (make-instance 'sql-query-modifier-exp
  73                  :modifier 'limit :components rest))
  74
  75 (defsql sql-group-by (:symbol "group-by") (&rest rest)
  76   (make-instance 'sql-query-modifier-exp
  77                  :modifier '|GROUP BY| :components rest))
  78
  79 (defsql sql-order-by (:symbol "order-by") (&rest rest)
  80   (make-instance 'sql-query-modifier-exp
  81                  :modifier '|ORDER BY| :components rest))
  82
  83 (defsql sql-having (:symbol "having") (&rest rest)
  84   (make-instance 'sql-query-modifier-exp
  85                  :modifier 'having :components rest))
  86
  87 (defsql sql-null (:symbol "null") (&rest rest)
  88   (if rest
  89       (make-instance 'sql-relational-exp :operator 'is
  90                      :sub-expressions (list (car rest) nil))
  91       (make-instance 'sql-value-exp :components 'null)))
  92
  93 (defsql sql-not-null (:symbol "not-null") ()
  94   (make-instance 'sql-value-exp
  95                  :components '|NOT NULL|))
  96
  97 (defsql sql-exists (:symbol "exists") (&rest rest)
  98   (make-instance 'sql-function-exp
  99                  :name 'exists :args rest))
 100
 101 (defsql sql-* (:symbol "*") (&rest rest)
 102   (if (zerop (length rest))
 103       (make-instance 'sql-ident :name '*)
 104       (make-instance 'sql-relational-exp :operator '* :sub-expressions rest)))
 105
 106 (defsql sql-+ (:symbol "+") (&rest rest)
 107   (if (cdr rest)
 108       (make-instance 'sql-relational-exp
 109                      :operator '+ :sub-expressions rest)
 110       (make-instance 'sql-value-exp :modifier '+ :components rest)))
 111
 112 (defsql sql-/ (:symbol "/") (&rest rest)
 113   (make-instance 'sql-relational-exp
 114                  :operator '/ :sub-expressions rest))
 115
 116 (defsql sql-- (:symbol "-") (&rest rest)
 117         (if (cdr rest)
 118             (make-instance 'sql-relational-exp
 119                            :operator '- :sub-expressions rest)
 120             (make-instance 'sql-value-exp :modifier '- :components rest)))
 121
 122 (defsql sql-like (:symbol "like") (&rest rest)
 123   (make-instance 'sql-relational-exp
 124                  :operator 'like :sub-expressions rest))
 125
 126 (defsql sql-uplike (:symbol "uplike") (&rest rest)
 127   (make-instance 'sql-upcase-like
 128                  :sub-expressions rest))
 129
 130 (defsql sql-and (:symbol "and") (&rest rest)
 131   (make-instance 'sql-relational-exp
 132                  :operator 'and :sub-expressions rest))
 133
 134 (defsql sql-or (:symbol "or") (&rest rest)
 135   (make-instance 'sql-relational-exp
 136                  :operator 'or :sub-expressions rest))
 137
 138 (defsql sql-in (:symbol "in") (&rest rest)
 139   (make-instance 'sql-relational-exp
 140                  :operator 'in :sub-expressions rest))
 141
 142 (defsql sql-concat-op (:symbol "concat-op") (&rest rest)
 143   (make-instance 'sql-relational-exp
 144                  :operator '\|\| :sub-expressions rest))
 145
 146 (defsql sql-concat (:symbol "concat") (&rest rest)
 147   (make-instance 'sql-function-exp
 148                  :name 'concat :args rest))
 149
 150 (defsql sql-substr (:symbol "substr") (&rest rest)
 151   (if (= (length rest) 3)
 152       (make-instance 'sql-function-exp
 153                      :name 'substr :args rest)
 154       (error 'sql-user-error :message "SUBSTR must have 3 arguments.")))
 155
 156 (defsql sql-substring (:symbol "substring") (&rest rest)
 157   (if (= (length rest) 3)
 158       (make-instance 'sql-function-exp
 159                      :name 'substring :args rest)
 160       (error 'sql-user-error :message "SUBSTRING must have 3 arguments.")))
 161
 162 (defsql sql-is (:symbol "is") (&rest rest)
 163   (make-instance 'sql-relational-exp
 164                  :operator 'is :sub-expressions rest))
 165
 166 (defsql sql-= (:symbol "=") (&rest rest)
 167   (make-instance 'sql-relational-exp
 168                  :operator '= :sub-expressions rest))
 169
 170 (defsql sql-== (:symbol "==") (&rest rest)
 171   (make-instance 'sql-assignment-exp
 172                  :operator '= :sub-expressions rest))
 173
 174 (defsql sql-< (:symbol "<") (&rest rest)
 175   (make-instance 'sql-relational-exp
 176                  :operator '< :sub-expressions rest))
 177
 178
 179 (defsql sql-> (:symbol ">") (&rest rest)
 180   (make-instance 'sql-relational-exp
 181                  :operator '> :sub-expressions rest))
 182
 183 (defsql sql-<> (:symbol "<>") (&rest rest)
 184         (make-instance 'sql-relational-exp
 185                        :operator '<> :sub-expressions rest))
 186
 187 (defsql sql->= (:symbol ">=") (&rest rest)
 188   (make-instance 'sql-relational-exp
 189                  :operator '>= :sub-expressions rest))
 190
 191 (defsql sql-<= (:symbol "<=") (&rest rest)
 192   (make-instance 'sql-relational-exp
 193                  :operator '<= :sub-expressions rest))
 194
 195 (defsql sql-count (:symbol "count") (&rest rest)
 196   (make-instance 'sql-function-exp
 197                  :name 'count :args rest))
 198
 199 (defsql sql-max (:symbol "max") (&rest rest)
 200   (make-instance 'sql-function-exp
 201                  :name 'max :args rest))
 202
 203 (defsql sql-min (:symbol "min") (&rest rest)
 204   (make-instance 'sql-function-exp
 205                  :name 'min :args rest))
 206
 207 (defsql sql-avg (:symbol "avg") (&rest rest)
 208   (make-instance 'sql-function-exp
 209                  :name 'avg :args rest))
 210
 211 (defsql sql-sum (:symbol "sum") (&rest rest)
 212   (make-instance 'sql-function-exp
 213                  :name 'sum :args rest))
 214
 215 (defsql sql-the (:symbol "the") (&rest rest)
 216   (make-instance 'sql-typecast-exp
 217                  :modifier (first rest) :components (second rest)))
 218
 219 (defsql sql-function (:symbol "function") (&rest args)
 220         (make-instance 'sql-function-exp
 221                        :name (make-symbol (car args)) :args (cdr args)))
 222
 223 (defsql sql-between (:symbol "between") (&rest rest)
 224   (if (= (length rest) 3)
 225       (make-instance 'sql-between-exp :name 'between :args rest)
 226       (error 'sql-user-error :message "BETWEEN must have 3 arguments.")))
 227
 228 (defsql sql-distinct (:symbol "distinct") (&rest rest)
 229   (make-instance 'sql-query-modifier-exp :modifier 'distinct
 230                  :components rest))
 231
 232 (defsql sql-coalesce (:symbol "coalesce") (&rest rest)
 233   (make-instance 'sql-function-exp
 234                  :name 'coalesce :args rest))
 235
 236 (defsql sql-nvl (:symbol "nvl") (&rest rest)
 237   (if (= (length rest) 2)
 238       (make-instance 'sql-function-exp
 239                      :name 'coalesce :args rest)
 240       (error 'sql-user-error :message "NVL accepts exactly 2 arguments.")))
 241
 242 (defsql sql-userenv (:symbol "userenv") (&rest rest)
 243   (make-instance 'sql-function-exp
 244                  :name 'userenv :args rest))
 245
 246 (defsql sql-lower  (:symbol "lower") (&rest rest)
 247   (if (= (length rest) 1)
 248       (make-instance 'sql-function-exp
 249                      :name 'lower :args rest)
 250     (error 'sql-user-error :message "LOWER must have 1 argument.")))
 251
 252 (defsql sql-upper  (:symbol "upper") (&rest rest)
 253   (if (= (length rest) 1)
 254       (make-instance 'sql-function-exp
 255                      :name 'upper :args rest)
 256     (error 'sql-user-error :message "UPPER must have 1 argument.")))