--- /dev/null
+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name: conditions.lisp
+;;;; Purpose: Error conditions for high-level SQL interface
+;;;; Programmers: Kevin M. Rosenberg based on
+;;;; Original code by Pierre R. Mai
+;;;; Date Started: Feb 2002
+;;;;
+;;;; $Id$
+;;;;
+;;;; This file, part of CLSQL, is Copyright (c) 2002-2004 by Kevin M. Rosenberg
+;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
+;;;;
+;;;; 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)
+
+(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 ()
+ ())
+
+(define-condition clsql-error (error clsql-condition)
+ ())
+
+(define-condition clsql-simple-error (simple-condition clsql-error)
+ ())
+
+(define-condition clsql-warning (warning clsql-condition)
+ ())
+
+(define-condition clsql-simple-warning (simple-condition clsql-warning)
+ ())
+
+(define-condition clsql-generic-error (clsql-error)
+ ((message :initarg :message
+ :reader clsql-generic-error-message))
+ (:report (lambda (c stream)
+ (format stream (clsql-generic-error-message c)))))
+
+(define-condition clsql-invalid-spec-error (clsql-error)
+ ((connection-spec :initarg :connection-spec
+ :reader clsql-invalid-spec-error-connection-spec)
+ (database-type :initarg :database-type
+ :reader clsql-invalid-spec-error-database-type)
+ (template :initarg :template
+ :reader clsql-invalid-spec-error-template))
+ (:report (lambda (c stream)
+ (format stream "The connection specification ~A~%is invalid for database type ~A.~%The connection specification must conform to ~A"
+ (clsql-invalid-spec-error-connection-spec c)
+ (clsql-invalid-spec-error-database-type c)
+ (clsql-invalid-spec-error-template c)))))
+
+(defmacro check-connection-spec (connection-spec database-type template)
+ "Check the connection specification against the provided template,
+and signal an clsql-invalid-spec-error if they don't match."
+ `(handler-case
+ (destructuring-bind ,template ,connection-spec
+ (declare (ignore ,@(remove '&optional template)))
+ t)
+ (error () (error 'clsql-invalid-spec-error
+ :connection-spec ,connection-spec
+ :database-type ,database-type
+ :template (quote ,template)))))
+
+(define-condition clsql-access-error (clsql-error)
+ ((database-type :initarg :database-type
+ :reader clsql-access-error-database-type)
+ (connection-spec :initarg :connection-spec
+ :reader clsql-access-error-connection-spec)
+ (error :initarg :error :reader clsql-access-error-error))
+ (:report (lambda (c stream)
+ (format stream "While trying to access database ~A~% using database-type ~A:~% Error ~A~% has occurred."
+ (database-name-from-spec
+ (clsql-access-error-connection-spec c)
+ (clsql-access-error-database-type c))
+ (clsql-access-error-database-type c)
+ (clsql-access-error-error c)))))
+
+(define-condition clsql-connect-error (clsql-access-error)
+ ((errno :initarg :errno :reader clsql-connect-error-errno))
+ (:report (lambda (c stream)
+ (format stream "While trying to connect to database ~A~% using database-type ~A:~% Error ~D / ~A~% has occurred."
+ (database-name-from-spec
+ (clsql-access-error-connection-spec c)
+ (clsql-access-error-database-type c))
+ (clsql-access-error-database-type c)
+ (clsql-connect-error-errno c)
+ (clsql-access-error-error c)))))
+
+(define-condition clsql-sql-error (clsql-error)
+ ((database :initarg :database :reader clsql-sql-error-database)
+ (message :initarg :message :initform 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)
+ (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)
+ (message :initarg :message :reader clsql-database-warning-message))
+ (:report (lambda (c stream)
+ (format stream "While accessing database ~A~% Warning: ~A~% has occurred."
+ (clsql-database-warning-database c)
+ (clsql-database-warning-message c)))))
+
+(define-condition clsql-exists-condition (clsql-condition)
+ ((old-db :initarg :old-db :reader clsql-exists-condition-old-db)
+ (new-db :initarg :new-db :reader clsql-exists-condition-new-db
+ :initform nil))
+ (:report (lambda (c stream)
+ (format stream "In call to ~S:~%" 'connect)
+ (cond
+ ((null (clsql-exists-condition-new-db c))
+ (format stream
+ " There is an existing connection ~A to database ~A."
+ (clsql-exists-condition-old-db c)
+ (database-name (clsql-exists-condition-old-db c))))
+ ((eq (clsql-exists-condition-new-db c)
+ (clsql-exists-condition-old-db c))
+ (format stream
+ " Using existing connection ~A to database ~A."
+ (clsql-exists-condition-old-db c)
+ (database-name (clsql-exists-condition-old-db c))))
+ (t
+ (format stream
+ " Created new connection ~A to database ~A~%, although there is an existing connection (~A)."
+ (clsql-exists-condition-new-db c)
+ (database-name (clsql-exists-condition-new-db c))
+ (clsql-exists-condition-old-db c)))))))
+
+(define-condition clsql-exists-warning (clsql-exists-condition
+ clsql-warning)
+ ())
+
+(define-condition clsql-exists-error (clsql-exists-condition
+ clsql-error)
+ ())
+
+(define-condition clsql-closed-error (clsql-error)
+ ((database :initarg :database :reader clsql-closed-error-database))
+ (:report (lambda (c stream)
+ (format stream "The database ~A has already been closed."
+ (clsql-closed-error-database c)))))
+
+(define-condition clsql-no-database-error (clsql-error)
+ ((database :initarg :database :reader clsql-no-database-error-database))
+ (:report (lambda (c stream)
+ (format stream "~S is not a CLSQL database."
+ (clsql-no-database-error-database c)))))
+
+(define-condition clsql-odbc-error (clsql-error)
+ ((odbc-message :initarg :odbc-message
+ :reader clsql-odbc-error-message)
+ (sql-state :initarg :sql-state :initform nil
+ :reader clsql-odbc-error-sql-state))
+ (:report (lambda (c stream)
+ (format stream "[ODBC error] ~A; state: ~A"
+ (clsql-odbc-error-message c)
+ (clsql-odbc-error-sql-state c)))))
+
+;; Signal conditions
+
+
+(defun signal-closed-database-error (database)
+ (cerror "Ignore this error and return nil."
+ 'clsql-closed-error
+ :database database))
+
+(defun signal-no-database-error (database)
+ (error 'clsql-no-database-error :database database))
+
+(define-condition clsql-type-error (clsql-error clsql-condition)
+ ((slotname :initarg :slotname
+ :reader clsql-type-error-slotname)
+ (typespec :initarg :typespec
+ :reader clsql-type-error-typespec)
+ (value :initarg :value
+ :reader clsql-type-error-value))
+ (:report (lambda (c stream)
+ (format stream
+ "Invalid value ~A in slot ~A, not of type ~A."
+ (clsql-type-error-value c)
+ (clsql-type-error-slotname c)
+ (clsql-type-error-typespec c)))))
+
+(define-condition clsql-sql-syntax-error (clsql-error)
+ ((reason :initarg :reason
+ :reader clsql-sql-syntax-error-reason))
+ (:report (lambda (c stream)
+ (format stream "Invalid SQL syntax: ~A"
+ (clsql-sql-syntax-error-reason c)))))
+
projects / clsql.git / blobdiff