diff options
Diffstat (limited to 'sql/operations.lisp')
| -rw-r--r-- | sql/operations.lisp | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/sql/operations.lisp b/sql/operations.lisp new file mode 100644 index 0000000..faa22b5 --- /dev/null +++ b/sql/operations.lisp @@ -0,0 +1,262 @@ +;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*- +;;;; ************************************************************************* +;;;; +;;;; Definition of SQL operations used with the symbolic SQL syntax. +;;;; +;;;; This file is part of CLSQL. +;;;; +;;;; CLSQL users are granted the rights to distribute and use this software +;;;; as governed by the terms of the Lisp Lesser GNU Public License +;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL. +;;;; ************************************************************************* + +(in-package #:clsql-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 (symbol-name-default-case 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-function-exp + :name 'any :args rest)) + +(defsql sql-some (:symbol "some") (&rest rest) + (make-instance 'sql-function-exp + :name 'some :args rest)) + +(defsql sql-all (:symbol "all") (&rest rest) + (make-instance 'sql-function-exp + :name 'all :args rest)) + +(defsql sql-e-string (:symbol "E") (&rest rest) + (make-instance 'sql-escape-string-exp :string (first 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-set-exp + :operator 'union :sub-expressions rest)) + +(defsql sql-intersect (:symbol "intersect") (&rest rest) + (make-instance 'sql-set-exp + :operator 'intersect :sub-expressions rest)) + +(defsql sql-except (:symbol "except") (&rest rest) + (make-instance 'sql-set-exp + :operator 'except :sub-expressions rest)) + +(defsql sql-minus (:symbol "minus") (&rest rest) + (make-instance 'sql-set-exp + :operator 'minus :sub-expressions rest)) + +(defsql sql-limit (:symbol "limit") (&rest rest) + (make-instance 'sql-query-modifier-exp + :modifier 'limit :components rest)) + +(defsql sql-group-by (:symbol "group-by") (&rest rest) + (make-instance 'sql-query-modifier-exp + :modifier '|GROUP BY| :components rest)) + +(defsql sql-order-by (:symbol "order-by") (&rest rest) + (make-instance 'sql-query-modifier-exp + :modifier '|ORDER BY| :components rest)) + +(defsql sql-having (:symbol "having") (&rest rest) + (make-instance 'sql-query-modifier-exp + :modifier 'having :components rest)) + +(defsql sql-null (:symbol "null") (&optional not-null-thing) + (if not-null-thing + (make-instance 'sql-relational-exp :operator 'is + :sub-expressions (list not-null-thing nil)) + (make-instance 'sql-value-exp :components 'null))) + +(defsql sql-not-null (:symbol "not-null") (&optional not-null-thing) + (if not-null-thing + (make-instance + 'sql-relational-exp + :operator 'IS + :sub-expressions (list not-null-thing + (sql-expression :string "NOT NULL"))) + (sql-expression :string "NOT NULL"))) + +(defsql sql-exists (:symbol "exists") (&rest rest) + (make-instance 'sql-function-exp + :name 'exists :args rest)) + +(defsql sql-* (:symbol "*") (&rest rest) + (if (zerop (length rest)) + (make-instance 'sql-ident :name '*) + (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-concat-op (:symbol "concat-op") (&rest rest) + (make-instance 'sql-relational-exp + :operator '\|\| :sub-expressions rest)) + +(defsql sql-concat (:symbol "concat") (&rest rest) + (make-instance 'sql-function-exp + :name 'concat :args rest)) + +(defsql sql-substr (:symbol "substr") (&rest rest) + (if (= (length rest) 3) + (make-instance 'sql-function-exp + :name 'substr :args rest) + (error 'sql-user-error :message "SUBSTR must have 3 arguments."))) + +(defsql sql-substring (:symbol "substring") (&rest rest) + (if (= (length rest) 3) + (make-instance 'sql-function-exp + :name 'substring :args rest) + (error 'sql-user-error :message "SUBSTRING must have 3 arguments."))) + +(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-between (:symbol "between") (&rest rest) + (if (= (length rest) 3) + (make-instance 'sql-between-exp :name 'between :args rest) + (error 'sql-user-error :message "BETWEEN must have 3 arguments."))) + +(defsql sql-distinct (:symbol "distinct") (&rest rest) + (make-instance 'sql-query-modifier-exp :modifier 'distinct + :components rest)) + +(defsql sql-coalesce (:symbol "coalesce") (&rest rest) + (make-instance 'sql-function-exp + :name 'coalesce :args rest)) + +(defsql sql-nvl (:symbol "nvl") (&rest rest) + (if (= (length rest) 2) + (make-instance 'sql-function-exp + :name 'coalesce :args rest) + (error 'sql-user-error :message "NVL accepts exactly 2 arguments."))) + +(defsql sql-userenv (:symbol "userenv") (&rest rest) + (make-instance 'sql-function-exp + :name 'userenv :args rest)) + +(defsql sql-lower (:symbol "lower") (&rest rest) + (if (= (length rest) 1) + (make-instance 'sql-function-exp + :name 'lower :args rest) + (error 'sql-user-error :message "LOWER must have 1 argument."))) + +(defsql sql-upper (:symbol "upper") (&rest rest) + (if (= (length rest) 1) + (make-instance 'sql-function-exp + :name 'upper :args rest) + (error 'sql-user-error :message "UPPER must have 1 argument."))) |