r9233: fix loop

[clsql.git] / base / loop-extension.lisp

diff --git a/base/loop-extension.lisp b/base/loop-extension.lisp
index 335a9d234b93a0b5ef37d16c872ab6c8f8840c10..4fc421bb56452ecf71af888c32997faed4e64472 100644 (file)
--- a/base/loop-extension.lisp
+++ b/base/loop-extension.lisp
@@ -55,11 +55,10 @@
 
     (cond
       ;; Object query resulting in a list of returned object instances
-      #+ignore
-      ((and (consp (first in-phrase))
-           (consp (second (first in-phrase)))
-           (eq 'quote (first (second (first in-phrase))))
-           (symbolp (second (second (first in-phrase)))))
+     ((and (consp (first 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-))
@@ -69,6 +68,7 @@
            (,step-var nil))
           ()
           ()
+          ()
           (if (null ,result-var)
               t
               (progn
@@ -160,11 +160,38 @@
 
     (cond
       ;; Object query resulting in a list of returned object instances
-      ((and (consp (car in-phrase))
-           (consp (second (car in-phrase)))
-           (eq 'quote (first (second (car in-phrase))))
-           (symbolp (second (second (car in-phrase)))))
-       (loop-error "object query not yet supported"))
+      ((and (string-equal "select" (symbol-name (car 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 ,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-"))