r9211: add *backend-warning-behavior

[clsql.git] / base / conditions.lisp

diff --git a/base/conditions.lisp b/base/conditions.lisp
index 25d4623605396b0bdbd8b75e39b53f7b9d24e093..4954eced7fdbb07dddd02794da93c59484ab3fad 100644 (file)
--- a/base/conditions.lisp
+++ b/base/conditions.lisp
@@ -20,6 +20,10 @@
 
 (in-package #:clsql-base)
 
+(defvar *backend-warning-behavior* :warn
+  "Action to perform on warning messages from backend. Default is to :warn. May also be
+set to :error to signal an error or :ignore/nil to silently ignore the warning.")
+
 ;;; Conditions
 (define-condition clsql-condition ()
   ())
@@ -94,15 +98,20 @@ and signal an clsql-invalid-spec-error if they don't match."
 
 (define-condition clsql-sql-error (clsql-error)
   ((database :initarg :database :reader clsql-sql-error-database)
-   (expression :initarg :expression :reader clsql-sql-error-expression)
-   (errno :initarg :errno :reader clsql-sql-error-errno)
-   (error :initarg :error :reader clsql-sql-error-error))
+   (message :initarg :message :initarg nil :reader clsql-sql-error-message)
+   (expression :initarg :expression :initarg nil :reader clsql-sql-error-expression)
+   (errno :initarg :errno :initarg nil :reader clsql-sql-error-errno)
+   (error :initarg :error :initarg nil :reader clsql-sql-error-error))
   (:report (lambda (c stream)
-            (format stream "While accessing database ~A~%  with expression ~S:~%  Error ~D / ~A~%  has occurred."
-                    (clsql-sql-error-database c)
-                    (clsql-sql-error-expression c)
-                    (clsql-sql-error-errno c)
-                    (clsql-sql-error-error c)))))
+            (if (clsql-sql-error-message c)
+                (format stream "While accessing database ~A~%, Error~%  ~A~%  has occurred."
+                        (clsql-sql-error-database c)
+                        (clsql-sql-error-message c))
+              (format stream "While accessing database ~A~%  with expression ~S:~%  Error ~D / ~A~%  has occurred."
+                      (clsql-sql-error-database c)
+                      (clsql-sql-error-expression c)
+                      (clsql-sql-error-errno c)
+                      (clsql-sql-error-error c))))))
 
 (define-condition clsql-database-warning (clsql-warning)
   ((database :initarg :database :reader clsql-database-warning-database)
@@ -198,3 +207,4 @@ and signal an clsql-invalid-spec-error if they don't match."
   (:report (lambda (c stream)
             (format stream "Invalid SQL syntax: ~A"
                     (clsql-sql-syntax-error-reason c)))))
+