1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: sqlite-sql.lisp
6 ;;;; Purpose: High-level SQLite3 interface
7 ;;;; Authors: Aurelio Bignoli
10 ;;;; This file, part of CLSQL, is Copyright (c) 2004 by Aurelio Bignoli
12 ;;;; CLSQL users are granted the rights to distribute and use this software
13 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
14 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
15 ;;;; *************************************************************************
17 (in-package #:clsql-sqlite3)
19 (defclass sqlite3-database (database)
20 ((sqlite3-db :initarg :sqlite3-db :accessor sqlite3-db)))
22 (defmethod database-type ((database sqlite3-database))
25 (defmethod database-initialize-database-type ((database-type (eql :sqlite3)))
28 (defun check-sqlite3-connection-spec (connection-spec)
29 (check-connection-spec connection-spec :sqlite3 (name &optional init-foreign-func)))
31 (defmethod database-name-from-spec (connection-spec
32 (database-type (eql :sqlite3)))
33 (check-sqlite3-connection-spec connection-spec)
34 (first connection-spec))
36 (defmethod database-connect (connection-spec (database-type (eql :sqlite3)))
37 (check-sqlite3-connection-spec connection-spec)
39 (let ((db (sqlite3:sqlite3-open (first connection-spec)))
40 (init-foreign-func (second connection-spec)))
41 (declare (type sqlite3:sqlite3-db-type db))
42 (when init-foreign-func
44 (funcall init-foreign-func db)
47 (sqlite3:sqlite3-close db)
49 (make-instance 'sqlite3-database
50 :name (database-name-from-spec connection-spec :sqlite3)
51 :database-type :sqlite3
52 :connection-spec connection-spec
54 (sqlite3:sqlite3-error (err)
55 (error 'sql-connection-error
56 :database-type database-type
57 :connection-spec connection-spec
58 :error-id (sqlite3:sqlite3-error-code err)
59 :message (sqlite3:sqlite3-error-message err)))))
61 (defmethod database-disconnect ((database sqlite3-database))
62 (sqlite3:sqlite3-close (sqlite3-db database))
63 (setf (sqlite3-db database) nil)
66 (defmethod database-execute-command (sql-expression (database sqlite3-database))
68 (let ((stmt (sqlite3:sqlite3-prepare (sqlite3-db database) sql-expression)))
69 (declare (type sqlite3:sqlite3-stmt-type stmt))
72 (sqlite3:sqlite3-step stmt)
73 (sqlite3:sqlite3-finalize stmt))))
74 (sqlite3:sqlite3-error (err)
75 (error 'sql-database-data-error
77 :expression sql-expression
78 :error-id (sqlite3:sqlite3-error-code err)
79 :message (sqlite3:sqlite3-error-message err))))
82 (defstruct sqlite3-result-set
83 (stmt sqlite3:null-stmt
84 :type sqlite3:sqlite3-stmt-type)
85 (n-col 0 :type fixnum)
89 (declaim (ftype (function (sqlite3:sqlite3-stmt-type fixnum t) list) get-result-types))
90 (defun get-result-types (stmt n-col result-types)
91 (declare (type sqlite3:sqlite3-stmt-type stmt) (type fixnum n-col))
92 (if (eq :auto result-types)
93 (loop for n from 0 below n-col
94 collect (let ((column-type (sqlite3:sqlite3-column-type stmt n)))
96 ((= column-type sqlite3:SQLITE-INTEGER) :int64)
97 ((= column-type sqlite3:SQLITE-FLOAT) :double)
98 ((= column-type sqlite3:SQLITE-TEXT) :string)
99 ((= column-type sqlite3:SQLITE-BLOB) :blob)
100 ((= column-type sqlite3:SQLITE-NULL) :string)
102 (loop for type in result-types
104 ((:int :integer :tinyint) :int32)
105 (:long #+(or x86-64 64bit) :int64 #-(or x86-64 64bit) :int32)
107 ((:float :double) :double)
109 (otherwise :string)))))
111 (defmethod database-query-result-set ((query-expression string)
112 (database sqlite3-database)
113 &key result-types full-set)
114 (let ((stmt sqlite3:null-stmt))
115 (declare (type sqlite3:sqlite3-stmt-type stmt))
118 (setf stmt (sqlite3:sqlite3-prepare (sqlite3-db database)
120 (let* ((n-col (if (sqlite3:sqlite3-step stmt)
121 ;; Non empty result set.
122 (sqlite3:sqlite3-column-count stmt)
125 (result-set (make-sqlite3-result-set
128 :col-names (loop for n from 0 below n-col
129 collect (sqlite3:sqlite3-column-name stmt n))
130 :result-types (when (> n-col 0)
131 (get-result-types stmt n-col result-types)))))
133 (values result-set n-col nil)
134 (values result-set n-col))))
135 (sqlite3:sqlite3-error (err)
137 (unless (eq stmt sqlite3:null-stmt)
139 (sqlite3:sqlite3-finalize stmt)))
140 (error 'sql-database-data-error
142 :expression query-expression
143 :error-id (sqlite3:sqlite3-error-code err)
144 :message (sqlite3:sqlite3-error-message err)))))))
146 (defmethod database-dump-result-set (result-set (database sqlite3-database))
148 (sqlite3:sqlite3-finalize (sqlite3-result-set-stmt result-set))
149 (sqlite3:sqlite3-error (err)
150 (error 'sql-database-error
152 (format nil "Error finalizing SQLite3 statement: ~A"
153 (sqlite3:sqlite3-error-message err))))))
155 (defmethod database-store-next-row (result-set (database sqlite3-database) list)
156 (let ((n-col (sqlite3-result-set-n-col result-set)))
161 (let ((stmt (sqlite3-result-set-stmt result-set)))
162 (declare (type sqlite3:sqlite3-stmt-type stmt))
163 ;; Store row in list.
164 (loop for i = 0 then (1+ i)
166 for types = (sqlite3-result-set-result-types result-set) then (rest types)
168 (if (eq (first types) :blob)
169 (clsql-uffi:convert-raw-field
170 (sqlite3:sqlite3-column-blob stmt i)
172 (sqlite3:sqlite3-column-bytes stmt i))
173 (clsql-uffi:convert-raw-field
174 (sqlite3:sqlite3-column-text stmt i)
176 ;; Advance result set cursor.
178 (unless (sqlite3:sqlite3-step stmt)
179 (setf (sqlite3-result-set-n-col result-set) 0))
180 (sqlite3:sqlite3-error (err)
181 (error 'sql-database-error
182 :message (format nil "Error in sqlite3-step: ~A"
183 (sqlite3:sqlite3-error-message err)))))
187 (defmethod database-query (query-expression (database sqlite3-database) result-types field-names)
188 (declare (optimize (speed 3) (safety 0) (debug 0) (space 0)))
190 (let ((stmt (sqlite3:sqlite3-prepare (sqlite3-db database)
194 (declare (type sqlite3:sqlite3-stmt-type stmt))
196 (when (sqlite3:sqlite3-step stmt)
197 (let ((n-col (sqlite3:sqlite3-column-count stmt)))
198 (flet ((extract-row-data ()
199 (loop for i from 0 below n-col
200 for types = (get-result-types stmt n-col result-types) then (rest types)
201 collect (if (eq (first types) :blob)
202 (clsql-uffi:convert-raw-field
203 (sqlite3:sqlite3-column-blob stmt i)
205 (sqlite3:sqlite3-column-bytes stmt i))
206 (clsql-uffi:convert-raw-field
207 (sqlite3:sqlite3-column-text stmt i)
210 (setf col-names (loop for n from 0 below n-col
211 collect (sqlite3:sqlite3-column-name stmt n))))
212 (push (extract-row-data) rows)
214 (if (sqlite3:sqlite3-step stmt)
215 (push (extract-row-data) rows)
217 (sqlite3:sqlite3-finalize stmt))
218 (values (nreverse rows) col-names))
219 (sqlite3:sqlite3-error (err)
220 (error 'sql-database-data-error
222 :expression query-expression
223 :error-id (sqlite3:sqlite3-error-code err)
224 :message (sqlite3:sqlite3-error-message err)))))
228 (defmethod database-list-tables-and-sequences ((database sqlite3-database) &key owner)
229 (declare (ignore owner))
230 ;; Query is copied from .table command of sqlite3 command line utility.
231 (mapcar #'car (database-query
232 "SELECT name FROM sqlite_master WHERE type='table' UNION ALL SELECT name FROM sqlite_temp_master WHERE type='table' ORDER BY name"
235 (defmethod database-list-tables ((database sqlite3-database) &key owner)
236 (remove-if #'(lambda (s)
237 (and (>= (length s) 11)
238 (string-equal (subseq s 0 11) "_CLSQL_SEQ_")))
239 (database-list-tables-and-sequences database :owner owner)))
241 (defmethod database-list-views ((database sqlite3-database)
243 (declare (ignore owner))
244 (mapcar #'car (database-query
245 "SELECT name FROM sqlite_master WHERE type='view' UNION ALL SELECT name FROM sqlite_temp_master WHERE type='view' ORDER BY name"
248 (defmethod database-list-indexes ((database sqlite3-database)
250 (declare (ignore owner))
251 (mapcar #'car (database-query
252 "SELECT name FROM sqlite_master WHERE type='index' UNION ALL SELECT name FROM sqlite_temp_master WHERE type='index' ORDER BY name"
255 (defmethod database-list-table-indexes (table (database sqlite3-database)
257 (declare (ignore owner))
258 (let ((*print-circle* nil))
263 "SELECT name FROM sqlite_master WHERE type='index' AND tbl_name='~A' UNION ALL SELECT name FROM sqlite_temp_master WHERE type='index' AND tbl_name='~A' ORDER BY name"
267 (declaim (inline sqlite3-table-info))
268 (defun sqlite3-table-info (table database)
269 (database-query (format nil "PRAGMA table_info('~A')" table)
272 (defmethod database-list-attributes (table (database sqlite3-database)
274 (declare (ignore owner))
275 (mapcar #'(lambda (table-info) (second table-info))
276 (sqlite3-table-info table database)))
278 (defmethod database-attribute-type (attribute table
279 (database sqlite3-database)
281 (declare (ignore owner))
283 (loop for field-info in (sqlite3-table-info table database)
284 when (string= attribute (second field-info))
286 (let* ((raw-type (third field-info))
287 (start-length (position #\( raw-type))
288 (type (string-trim clsql-sys::+whitespace-chars+
290 (subseq raw-type 0 start-length)
292 (length (if start-length
293 (parse-integer (subseq raw-type (1+ start-length))
296 (values (when type (ensure-keyword type))
299 (if (string-equal (fourth field-info) "0")
302 (defmethod database-create (connection-spec (type (eql :sqlite3)))
303 (declare (ignore connection-spec))
304 ;; databases are created automatically by Sqlite3
307 (defmethod database-destroy (connection-spec (type (eql :sqlite3)))
308 (destructuring-bind (name) connection-spec
309 (if (probe-file name)
313 (defmethod database-probe (connection-spec (type (eql :sqlite3)))
314 (destructuring-bind (name) connection-spec
315 ;; TODO: Add a test that this file is a real sqlite3 database
316 (or (string-equal ":memory:" name)
317 (and (probe-file name) t))))
319 ;;; Database capabilities
321 (defmethod db-type-has-boolean-where? ((db-type (eql :sqlite3)))