X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=sql%2Fdatabase.lisp;h=9b716444f0256b51c13c98a2a4ffd0a57588561a;hp=285d3e269b237e4d6817854465f7d01cfe78b035;hb=refs%2Ftags%2Fv3.8.6;hpb=1c1b8e0e9c08433f730352f4955d56feccca0488 diff --git a/sql/database.lisp b/sql/database.lisp index 285d3e2..9b71644 100644 --- a/sql/database.lisp +++ b/sql/database.lisp @@ -48,7 +48,7 @@ error is signalled." (database (values database 1)) (string - (let* ((matches (remove-if + (let* ((matches (remove-if #'(lambda (db) (not (and (string= (database-name db) database) (if db-type @@ -61,18 +61,18 @@ error is signalled." (cerror "Return nil." 'sql-database-error :message - (format nil "There exists ~A database called ~A." - (if (zerop count) "no" "more than one") - database))))) + (format nil "There exists ~A database called ~A." + (if (zerop count) "no" "more than one") + database))))) (null (error "A database must be specified rather than NIL.")))) (defun connect (connection-spec - &key (if-exists *connect-if-exists*) - (make-default t) + &key (if-exists *connect-if-exists*) + (make-default t) (pool nil) - (database-type *default-database-type*)) + (database-type *default-database-type*)) "Connects to a database of the supplied DATABASE-TYPE which defaults to *DEFAULT-DATABASE-TYPE*, using the type-specific connection specification CONNECTION-SPEC. The value of IF-EXISTS, @@ -91,18 +91,20 @@ be taken from this pool." (unless database-type (error 'sql-database-error :message "Must specify a database-type.")) - + (when (stringp connection-spec) (setq connection-spec (string-to-list-connection-spec connection-spec))) - + (unless (member database-type *loaded-database-types*) (asdf:operate 'asdf:load-op (ensure-keyword - (concatenate 'string - (symbol-name '#:clsql-) - (symbol-name database-type))))) + (concatenate 'string + (symbol-name '#:clsql-) + (symbol-name database-type))))) (if pool - (acquire-from-pool connection-spec database-type pool) + (let ((conn (acquire-from-pool connection-spec database-type pool))) + (when make-default (setq *default-database* conn)) + conn) (let* ((db-name (database-name-from-spec connection-spec database-type)) (old-db (unless (eq if-exists :new) (find-database db-name :db-type database-type @@ -114,17 +116,17 @@ be taken from this pool." (setq result (database-connect connection-spec database-type)) (warn 'sql-warning - :message - (format nil - "Created new connection ~A to database ~A~%, although there is an existing connection (~A)." - result (database-name result) old-db))) - (:error + :message + (format nil + "Created new connection ~A to database ~A~%, although there is an existing connection (~A)." + result (database-name result) old-db))) + (:error (restart-case - (error 'sql-connection-error - :message - (format nil "There is an existing connection ~A to database ~A." - old-db - (database-name old-db))) + (error 'sql-connection-error + :message + (format nil "There is an existing connection ~A to database ~A." + old-db + (database-name old-db))) (create-new () :report "Create a new connection." (setq result @@ -135,17 +137,17 @@ be taken from this pool." (:warn-old (setq result old-db) (warn 'sql-warning - :message - (format nil - "Using existing connection ~A to database ~A." - old-db - (database-name old-db)))) + :message + (format nil + "Using existing connection ~A to database ~A." + old-db + (database-name old-db)))) (:old (setq result old-db))) (setq result (database-connect connection-spec database-type))) (when result - (setf (slot-value result 'state) :open) + (setf (slot-value result 'state) :open) (pushnew result *connected-databases*) (when make-default (setq *default-database* result)) result)))) @@ -185,17 +187,17 @@ from a pool it will be released to this pool." and signal an sql-user-error if they don't match. This function is called by database backends." `(handler-case - (destructuring-bind ,template ,connection-spec + (destructuring-bind ,template ,connection-spec (declare (ignore ,@(remove '&optional template))) t) - (error () + (error () (error 'sql-user-error :message - (format nil - "The connection specification ~A~%is invalid for database type ~A.~%The connection specification must conform to ~A" - ,connection-spec - ,database-type - (quote ,template)))))) + (format nil + "The connection specification ~A~%is invalid for database type ~A.~%The connection specification must conform to ~A" + ,connection-spec + ,database-type + (quote ,template)))))) (defun reconnect (&key (database *default-database*) (error nil) (force t)) "Reconnects DATABASE which defaults to *DEFAULT-DATABASE* to @@ -211,25 +213,25 @@ closed, if FORCE is non-nil, as it is by default, the connection is closed and errors are suppressed. If force is nil and the database connection cannot be closed, an error is signalled." (let ((db (etypecase database - (database database) - ((or string list) - (let ((db (find-database database :errorp nil))) - (when (null db) - (if (and database error) - (error 'sql-connection-error - :message - (format nil "Unable to find database with connection-spec ~A." database)) - (return-from reconnect nil))) - db))))) - + (database database) + ((or string list) + (let ((db (find-database database :errorp nil))) + (when (null db) + (if (and database error) + (error 'sql-connection-error + :message + (format nil "Unable to find database with connection-spec ~A." database)) + (return-from reconnect nil))) + db))))) + (when (is-database-open db) (if force - (ignore-errors (disconnect :database db)) - (disconnect :database db :error nil))) - + (ignore-errors (disconnect :database db)) + (disconnect :database db :error nil))) + (connect (connection-spec db)))) - + (defun status (&optional full) "Prints information about the currently connected databases to *STANDARD-OUTPUT*. The argument FULL is nil by default and a @@ -238,24 +240,24 @@ database is printed." (flet ((get-data () (let ((data '())) (dolist (db (connected-databases) data) - (push - (append - (list (if (equal db *default-database*) "*" "") - (database-name db) - (string-downcase (string (database-type db))) - (cond ((and (command-recording-stream db) - (result-recording-stream db)) - "Both") - ((command-recording-stream db) "Commands") - ((result-recording-stream db) "Results") - (t "nil"))) - (when full - (list - (if (conn-pool db) "t" "nil") - (format nil "~A" (length (database-list-tables db))) - (format nil "~A" (length (database-list-views db)))))) - data)))) - (compute-sizes (data) + (push + (append + (list (if (equal db *default-database*) "*" "") + (database-name db) + (string-downcase (string (database-type db))) + (cond ((and (command-recording-stream db) + (result-recording-stream db)) + "Both") + ((command-recording-stream db) "Commands") + ((result-recording-stream db) "Results") + (t "nil"))) + (when full + (list + (if (conn-pool db) "t" "nil") + (format nil "~A" (length (database-list-tables db))) + (format nil "~A" (length (database-list-views db)))))) + data)))) + (compute-sizes (data) (mapcar #'(lambda (x) (apply #'max (mapcar #'length x))) (apply #'mapcar (cons #'list data)))) (print-separator (size) @@ -263,10 +265,10 @@ database is printed." (format t "~&CLSQL STATUS: ~A~%" (iso-timestring (get-time))) (let ((data (get-data))) (when data - (let* ((titles (if full - (list "" "DATABASE" "TYPE" "RECORDING" "POOLED" - "TABLES" "VIEWS") - (list "" "DATABASE" "TYPE" "RECORDING"))) + (let* ((titles (if full + (list "" "DATABASE" "TYPE" "RECORDING" "POOLED" + "TABLES" "VIEWS") + (list "" "DATABASE" "TYPE" "RECORDING"))) (sizes (compute-sizes (cons titles data))) (total-size (+ (apply #'+ sizes) (* 2 (1- (length titles))))) (control-string (format nil "~~&~~{~{~~~AA ~}~~}" sizes))) @@ -305,21 +307,24 @@ system specified by DATABASE-TYPE." (setq connection-spec (string-to-list-connection-spec connection-spec))) (database-list connection-spec database-type)) -(defmacro with-database ((db-var connection-spec &rest connect-args) &body body) +(defmacro with-database ((db-var connection-spec + &key make-default pool + (if-exists *connect-if-exists*) + (database-type *default-database-type*)) + &body body) "Evaluate the body in an environment, where DB-VAR is bound to the database connection given by CONNECTION-SPEC and CONNECT-ARGS. The connection is automatically closed or released to the pool on exit -from the body." - (let ((result (gensym "result-"))) - (unless db-var (setf db-var '*default-database*)) - `(let ((,db-var (connect ,connection-spec ,@connect-args)) - (,result nil)) - (unwind-protect - (let ((,db-var ,db-var)) - (setf ,result (progn ,@body))) - (disconnect :database ,db-var)) - ,result))) - +from the body. MAKE-DEFAULT has a default value of NIL." + `(let ((,db-var (connect ,connection-spec + :database-type ,database-type + :if-exists ,if-exists + :pool ,pool + :make-default ,make-default))) + (unwind-protect + (let ((,db-var ,db-var)) + (progn ,@body)) + (disconnect :database ,db-var)))) (defmacro with-default-database ((database) &rest body) "Perform BODY with DATABASE bound as *default-database*."