(defclass postgresql-database (database)
((conn-ptr :accessor database-conn-ptr :initarg :conn-ptr
- :type pgsql-conn-def)))
+ :type pgsql-conn-def)
+ (lock
+ :accessor database-lock
+ :initform (make-process-lock "conn"))))
(defmethod database-type ((database postgresql-database))
:postgresql)
(make-instance 'postgresql-database
:name (database-name-from-spec connection-spec
database-type)
+ :database-type :postgresql
:connection-spec connection-spec
:conn-ptr connection)))))
;;; Object listing
+(defun owner-clause (owner)
+ (cond
+ ((stringp owner)
+ (format
+ nil
+ " AND (relowner=(SELECT usesysid FROM pg_user WHERE (usename='~A')))"
+ owner))
+ ((null owner)
+ (format nil " AND (NOT (relowner=1))"))
+ (t "")))
+
(defmethod database-list-objects-of-type ((database postgresql-database)
type owner)
- (let ((owner-clause
- (cond ((stringp owner)
- (format nil " AND (relowner=(SELECT usesysid FROM pg_user WHERE (usename='~A')))" owner))
- ((null owner)
- (format nil " AND (NOT (relowner=1))"))
- (t ""))))
- (mapcar #'car
- (database-query
- (format nil
- "SELECT relname FROM pg_class WHERE (relkind = '~A')~A"
- type
- owner-clause)
- database nil))))
-
+ (mapcar #'car
+ (database-query
+ (format nil
+ "SELECT relname FROM pg_class WHERE (relkind = '~A')~A"
+ type
+ (owner-clause owner))
+ database nil)))
+
(defmethod database-list-tables ((database postgresql-database)
&key (owner nil))
(database-list-objects-of-type database "r" owner))
(defmethod database-list-indexes ((database postgresql-database)
&key (owner nil))
(database-list-objects-of-type database "i" owner))
-
+
+
+(defmethod database-list-table-indexes (table (database postgresql-database)
+ &key (owner nil))
+ (let ((indexrelids
+ (database-query
+ (format
+ nil
+ "select indexrelid from pg_index where indrelid=(select relfilenode from pg_class where relname='~A'~A)"
+ (string-downcase table)
+ (owner-clause owner))
+ database :auto))
+ (result nil))
+ (dolist (indexrelid indexrelids (nreverse result))
+ (push
+ (caar (database-query
+ (format nil "select relname from pg_class where relfilenode='~A'"
+ (car indexrelid))
+ database
+ nil))
+ result))))
+
(defmethod database-list-attributes ((table string)
(database postgresql-database)
&key (owner nil))
(defmethod database-create (connection-spec (type (eql :postgresql)))
(destructuring-bind (host name user password) connection-spec
- (declare (ignore password))
- (let ((asdf::*verbose-out* (make-string-output-stream)))
- (unwind-protect
- (let* ((status (asdf:run-shell-command
- "su -c ~A createdb -h~A ~A"
- user
- (if host host "localhost")
- name))
- (result (get-output-stream-string asdf::*verbose-out*)))
-
- (if (search "database creation failed: ERROR:" result)
- (error 'clsql-access-error
- :connection-spec connection-spec
- :database-type type
- :error
- (format nil "database-create failed: ~s" result))
- t))
- (close asdf::*verbose-out*)))))
+ (declare (ignore user password))
+ (multiple-value-bind (output status)
+ (clsql-base-sys:command-output "createdb -h~A ~A"
+ (if host host "localhost")
+ name)
+ (if (or (not (zerop status))
+ (search "database creation failed: ERROR:" output))
+ (error 'clsql-access-error
+ :connection-spec connection-spec
+ :database-type type
+ :error
+ (format nil "database-create failed: ~A"
+ output))
+ t))))
(defmethod database-destroy (connection-spec (type (eql :postgresql)))
(destructuring-bind (host name user password) connection-spec
- (declare (ignore password))
- (let ((asdf::*verbose-out* (make-string-output-stream)))
- (unwind-protect
- (let* ((status (asdf:run-shell-command
- "su -c ~A dropdb -h~A ~A"
- user
- (if host host "localhost")
- name))
- (result (get-output-stream-string asdf::*verbose-out*)))
-
- (if (search "database removal failed: ERROR:" result)
- (error 'clsql-access-error
- :connection-spec connection-spec
- :database-type type
- :error
- (format nil "database-destroy failed: ~s" result))
- t))
- (close asdf::*verbose-out*)))))
+ (declare (ignore user password))
+ (multiple-value-bind (output status)
+ (clsql-base-sys:command-output "dropdb -h~A ~A"
+ (if host host "localhost")
+ name)
+ (if (or (not (zerop status))
+ (search "database removal failed: ERROR:" output))
+ (error 'clsql-access-error
+ :connection-spec connection-spec
+ :database-type type
+ :error
+ (format nil "database-destory failed: ~A"
+ output))
+ t))))
(defmethod database-probe (connection-spec (type (eql :postgresql)))
+ (when (find (second connection-spec) (database-list connection-spec type)
+ :key #'car :test #'string-equal)
+ t))
+
+(defmethod database-list (connection-spec (type (eql :postgresql)))
(destructuring-bind (host name user password) connection-spec
+ (declare (ignore name))
(let ((database (database-connect (list host "template1" user password)
type)))
(unwind-protect
- (find name (database-query "select datname from pg_database"
- database :auto)
- :key #'car :test #'string-equal)
- (database-disconnect database)))))
+ (progn
+ (setf (slot-value database 'clsql-base-sys::state) :open)
+ (mapcar #'car (database-query "select datname from pg_database"
+ database nil)))
+ (progn
+ (database-disconnect database)
+ (setf (slot-value database 'clsql-base-sys::state) :closed))))))
+
+(defmethod database-describe-table ((database postgresql-database) table)
+ (database-query
+ (format nil "select a.attname, t.typname
+ from pg_class c, pg_attribute a, pg_type t
+ where c.relname = '~a'
+ and a.attnum > 0
+ and a.attrelid = c.oid
+ and a.atttypid = t.oid"
+ (sql-escape (string-downcase table)))
+ database :auto))
+
+(defun %pg-database-connection (connection-spec)
+ (check-connection-spec connection-spec :postgresql
+ (host db user password &optional port options tty))
+ (macrolet ((coerce-string (var)
+ `(unless (typep ,var 'simple-base-string)
+ (setf ,var (coerce ,var 'simple-base-string)))))
+ (destructuring-bind (host db user password &optional port options tty)
+ connection-spec
+ (coerce-string db)
+ (coerce-string user)
+ (let ((connection (pqsetdblogin host port options tty db user password)))
+ (declare (type postgresql::pgsql-conn-ptr connection))
+ (unless (eq (pqstatus connection) :connection-ok)
+ ;; Connect failed
+ (error 'clsql-connect-error
+ :database-type :postgresql
+ :connection-spec connection-spec
+ :errno (pqstatus connection)
+ :error (pqerrormessage connection)))
+ connection))))
+
+(defmethod database-reconnect ((database postgresql-database))
+ (let ((lock (database-lock database)))
+ (with-process-lock (lock "Reconnecting")
+ (with-slots (connection-spec conn-ptr)
+ database
+ (setf conn-ptr (%pg-database-connection connection-spec))
+ database))))
+
+;;; Database capabilities
+
+(defmethod db-type-has-fancy-math? ((db-type (eql :postgresql)))
+ t)
+(defmethod db-type-default-case ((db-type (eql :postgresql)))
+ :lower)
(when (clsql-base-sys:database-type-library-loaded :postgresql)
(clsql-base-sys:initialize-database-type :database-type :postgresql))