X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=sql%2Floop-extension.lisp;h=db1cfb62bcda7b67715760b6b8437fe6f4179edd;hp=343acba0eb085bf4a57890863bad6ae0dde22801;hb=e622ee6f4bf2b9fe81af59d566e651c983a4833b;hpb=fa071351835a2c754895cb917db9c63303e7b5c1

diff --git a/sql/loop-extension.lisp b/sql/loop-extension.lisp
index 343acba..db1cfb6 100644
--- a/sql/loop-extension.lisp
+++ b/sql/loop-extension.lisp
@@ -2,23 +2,29 @@
 ;;;; *************************************************************************
 ;;;; FILE IDENTIFICATION
 ;;;;
-;;;; Name:          loop-extension.cl
-;;;; Purpose:       Extensions to the Loop macro for CMUCL
-;;;; Programmer:    Pierre R. Mai
+;;;; Name:    loop-extension.lisp
+;;;; Purpose: Extensions to the Loop macro for CLSQL
 ;;;;
-;;;; Copyright (c) 1999-2001 Pierre R. Mai
+;;;; Copyright (c) 2001-2004 Kevin Rosenberg and (c) 1999-2001 Pierre R. Mai
 ;;;;
-;;;; $Id: loop-extension.lisp,v 1.2 2002/10/21 07:45:50 kevin Exp $
-;;;;
-;;;; The functions in this file were orignally distributed in the
-;;;; MaiSQL package in the file sql/sql.cl
+;;;; $Id$
 ;;;; *************************************************************************
 
-(in-package :cl-user)
+(in-package #:cl-user)
+
+#+(or allegro sbcl)
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (defpackage #:ansi-loop 
+    (:import-from #+sbcl #:sb-loop #+allegro #:excl
+		  #:*loop-epilogue*
+		  #:*loop-ansi-universe* 
+		  #:add-loop-path)))
 
-;;;; MIT-LOOP extension
+#+(or allegro sbcl)
+(defun ansi-loop::loop-gentemp (&optional (pref 'loopva-))
+  (gensym (string pref)))
 
-#+(or cmu scl)
+#+(or cmu scl sbcl openmcl allegro)
 (defun loop-record-iteration-path (variable data-type prep-phrases)
   (let ((in-phrase nil)
 	(from-phrase nil))
@@ -27,72 +33,209 @@
 	  (case prep
 	    ((:in :of)
 	     (when in-phrase
-	       (ansi-loop::loop-error
-		"Duplicate OF or IN iteration path: ~S." (cons prep rest)))
+	       (error 'clsql:sql-user-error
+		      :message
+		      (format nil
+			      "Duplicate OF or IN iteration path: ~S."
+			      (cons prep rest))))
 	     (setq in-phrase rest))
 	    ((:from)
 	     (when from-phrase
-	       (ansi-loop::loop-error
-		"Duplicate FROM iteration path: ~S." (cons prep rest)))
+	       (error 'clsql:sql-user-error
+		      :message
+		      (format nil
+			      "Duplicate FROM iteration path: ~S."
+			      (cons prep rest))))
 	     (setq from-phrase rest))
 	    (t
-	     (ansi-loop::loop-error
-	      "Unknown preposition: ~S." prep))))
+	     (error 'clsql:sql-user-error
+		    :message
+		    (format nil"Unknown preposition: ~S." prep)))))
     (unless in-phrase
-      (ansi-loop::loop-error "Missing OF or IN iteration path."))
+      (error 'clsql:sql-user-error 
+	     :message "Missing OF or IN iteration path."))
     (unless from-phrase
-      (setq from-phrase '(*default-database*)))
+      (setq from-phrase '(clsql-sys:*default-database*)))
+
+    (unless (consp variable)
+      (setq variable (list variable)))
+
     (cond
-      ((consp variable)
-       (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
-	     (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
-	     (result-set-var (ansi-loop::loop-gentemp
-			      'loop-record-result-set-))
+     ;; object query
+     ((and (consp (first in-phrase))
+	   (string-equal "sql-query" (symbol-name (caar in-phrase)))
+	   (consp (second (first in-phrase)))
+	   (eq 'quote (first (second (first in-phrase))))
+	   (symbolp (second (second (first in-phrase)))))
+
+       (let ((result-var (ansi-loop::loop-gentemp
+			      'loop-record-result-))
 	     (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
-	 (push `(when ,result-set-var
-		 (database-dump-result-set ,result-set-var ,db-var))
-	       ansi-loop::*loop-epilogue*)
-	 `(((,variable nil ,data-type) (,query-var ,(first in-phrase))
-	    (,db-var ,(first from-phrase))
-	    (,result-set-var nil)
+	 `(((,variable nil ,@(and data-type (list data-type)))
+	    (,result-var (clsql-sys:query ,(first in-phrase)))
 	    (,step-var nil))
-	   ((multiple-value-bind (%rs %cols)
-		(database-query-result-set ,query-var ,db-var)
-	      (setq ,result-set-var %rs ,step-var (make-list %cols))))
 	   ()
 	   ()
-	   (not (database-store-next-row ,result-set-var ,db-var ,step-var))
+	   ()
+	   (if (null ,result-var)
+	       t
+	       (progn
+		 (setq ,step-var (first ,result-var))
+		 (setq ,result-var (rest ,result-var))
+		 nil))
 	   (,variable ,step-var)
-	   (not ,result-set-var)
+	   (null ,result-var)
 	   ()
-	   (not (database-store-next-row ,result-set-var ,db-var ,step-var))
+	   (if (null ,result-var)
+	       t
+	       (progn
+		 (setq ,step-var (first ,result-var))
+		 (setq ,result-var (rest ,result-var))
+		 nil))
 	   (,variable ,step-var))))
-      (t
+      
+      ((consp variable)
        (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
 	     (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
 	     (result-set-var (ansi-loop::loop-gentemp
-			      'loop-record-result-set-)))
+			      'loop-record-result-set-))
+	     (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
 	 (push `(when ,result-set-var
-		 (database-dump-result-set ,result-set-var ,db-var))
+		  (clsql-sys:database-dump-result-set ,result-set-var ,db-var))
 	       ansi-loop::*loop-epilogue*)
-	 `(((,variable nil ,data-type) (,query-var ,(first in-phrase))
+	 `(((,variable nil ,@(and data-type (list data-type)))
+	    (,query-var ,(first in-phrase))
 	    (,db-var ,(first from-phrase))
-	    (,result-set-var nil))
+	    (,result-set-var nil)
+	    (,step-var nil))
 	   ((multiple-value-bind (%rs %cols)
-		(database-query-result-set ,query-var ,db-var)
-	      (setq ,result-set-var %rs ,variable (make-list %cols))))
-	   ()
+		(clsql-sys:database-query-result-set ,query-var ,db-var :result-types :auto)
+	      (setq ,result-set-var %rs ,step-var (make-list %cols))))
 	   ()
-	   (not (database-store-next-row ,result-set-var ,db-var ,variable))
 	   ()
+	   (not (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var))
+	   (,variable ,step-var)
 	   (not ,result-set-var)
 	   ()
-	   (not (database-store-next-row ,result-set-var ,db-var ,variable))
-	   ()))))))
+	   (not (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var))
+	   (,variable ,step-var)))))))
 
-#+(or cmu scl)
+#+(or cmu scl sbcl openmcl allegro)
 (ansi-loop::add-loop-path '(record records tuple tuples)
 			  'loop-record-iteration-path
 			  ansi-loop::*loop-ansi-universe*
 			  :preposition-groups '((:of :in) (:from))
 			  :inclusive-permitted nil)
+
+#+lispworks 
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (in-package loop))
+
+#+lispworks
+(cl-user::define-loop-method (record records tuple tuples) clsql-loop-method 
+  (in of from))
+
+#+lispworks
+(defun clsql-loop-method (method-name iter-var iter-var-data-type 
+			  prep-phrases inclusive? allowed-preps 
+			  method-specific-data)
+  (declare (ignore method-name inclusive? allowed-preps method-specific-data))
+  (let ((in-phrase nil)
+	(from-phrase nil))
+    (loop for (prep . rest) in prep-phrases
+	  do
+	  (cond
+	    ((or (eq prep 'in) (eq prep 'of))
+	     (when in-phrase
+	       (error 'clsql:sql-user-error
+		      :message
+		      (format nil "Duplicate OF or IN iteration path: ~S."
+			      (cons prep rest))))
+	     (setq in-phrase rest))
+	    ((eq prep 'from)
+	     (when from-phrase
+	       (error 'clsql:sql-user-error
+		      :message
+		      (format nil "Duplicate FROM iteration path: ~S."
+			      (cons prep rest))))
+	     (setq from-phrase rest))
+	    (t
+	     (error 'clsql:sql-user-error
+		    :message (format nil "Unknown preposition: ~S." prep)))))
+    (unless in-phrase
+      (error 'clsql:sql-user-error 
+	     :message "Missing OF or IN iteration path."))
+    (unless from-phrase
+      (setq from-phrase '(clsql:*default-database*)))
+
+    (unless (consp iter-var)
+      (setq iter-var (list iter-var)))
+
+    (cond
+     ;; object query
+     ((and (consp in-phrase)
+	   (string-equal "sql-query" (symbol-name (car in-phrase)))
+	   (consp (second in-phrase))
+	   (eq 'quote (first (second in-phrase)))
+	   (symbolp (second (second in-phrase))))
+
+       (let ((result-var (gensym "LOOP-RECORD-RESULT-"))
+	     (step-var (gensym "LOOP-RECORD-STEP-")))
+	 (values
+	  t
+	  nil
+	  `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
+	      (,result-var (clsql:query ,in-phrase))
+	      (,step-var nil))
+	  ()
+	  ()
+	  ()
+	  `((if (null ,result-var)
+		t
+		(progn
+		  (setq ,step-var (first ,result-var))
+		  (setq ,result-var (rest ,result-var))
+		  nil)))
+	  `(,iter-var ,step-var)
+	  `((if (null ,result-var)
+		t
+		(progn
+		  (setq ,step-var (first ,result-var))
+		  (setq ,result-var (rest ,result-var))
+		  nil)))
+	   `(,iter-var ,step-var)
+	   ()
+	   ()
+	   )))
+      
+      ((consp iter-var)
+       (let ((query-var (gensym "LOOP-RECORD-"))
+	     (db-var (gensym "LOOP-RECORD-DATABASE-"))
+	     (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
+	     (step-var (gensym "LOOP-RECORD-STEP-")))
+	 (values
+	  t
+	  nil
+	  `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
+	    (,query-var ,in-phrase)
+	    (,db-var ,(first from-phrase))
+	    (,result-set-var nil)
+	    (,step-var nil))
+	  `((multiple-value-bind (%rs %cols)
+		(clsql-sys:database-query-result-set ,query-var ,db-var :result-types :auto)
+	      (setq ,result-set-var %rs ,step-var (make-list %cols))))
+	  ()
+	  ()
+	  `((unless (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var)
+	      (when ,result-set-var
+		(clsql-sys:database-dump-result-set ,result-set-var ,db-var))
+	      t))
+	  `(,iter-var ,step-var)
+	  `((unless (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var)
+	      (when ,result-set-var
+		(clsql-sys:database-dump-result-set ,result-set-var ,db-var))
+	      t))
+	  `(,iter-var ,step-var)
+	  ()
+	  ()))))))
+