+
+;;; 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 "")))
+
+(defun database-list-objects-of-type (database type owner)
+ (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-views ((database postgresql-database)
+ &key (owner nil))
+ (database-list-objects-of-type database "v" 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))
+ (let* ((owner-clause
+ (cond ((stringp owner)
+ (format nil " AND (relowner=(SELECT usesysid FROM pg_user WHERE usename='~A'))" owner))
+ ((null owner) " AND (not (relowner=1))")
+ (t "")))
+ (result
+ (mapcar #'car
+ (database-query
+ (format nil "SELECT attname FROM pg_class,pg_attribute WHERE pg_class.oid=attrelid AND relname='~A'~A"
+ (string-downcase table)
+ owner-clause)
+ database nil))))
+ (if result
+ (reverse
+ (remove-if #'(lambda (it) (member it '("cmin"
+ "cmax"
+ "xmax"
+ "xmin"
+ "oid"
+ "ctid"
+ ;; kmr -- added tableoid
+ "tableoid") :test #'equal))
+ result)))))
+
+(defmethod database-attribute-type (attribute (table string)
+ (database postgresql-database)
+ &key (owner nil))
+ (let* ((owner-clause
+ (cond ((stringp owner)
+ (format nil " AND (relowner=(SELECT usesysid FROM pg_user WHERE usename='~A'))" owner))
+ ((null owner) " AND (not (relowner=1))")
+ (t "")))
+ (result
+ (mapcar #'car
+ (database-query
+ (format nil "SELECT pg_type.typname FROM pg_type,pg_class,pg_attribute WHERE pg_class.oid=pg_attribute.attrelid AND pg_class.relname='~A' AND pg_attribute.attname='~A' AND pg_attribute.atttypid=pg_type.oid~A"
+ (string-downcase table)
+ (string-downcase attribute)
+ owner-clause)
+ database nil))))
+ (when result
+ (intern (string-upcase (car result)) :keyword))))
+
+(defmethod database-create-sequence (sequence-name
+ (database postgresql-database))
+ (database-execute-command
+ (concatenate 'string "CREATE SEQUENCE " (sql-escape sequence-name))
+ database))
+
+(defmethod database-drop-sequence (sequence-name
+ (database postgresql-database))
+ (database-execute-command
+ (concatenate 'string "DROP SEQUENCE " (sql-escape sequence-name)) database))
+
+(defmethod database-list-sequences ((database postgresql-database)
+ &key (owner nil))
+ (database-list-objects-of-type database "S" owner))
+
+(defmethod database-set-sequence-position (name (position integer)
+ (database postgresql-database))
+ (values
+ (parse-integer
+ (caar
+ (database-query
+ (format nil "SELECT SETVAL ('~A', ~A)" name position)
+ database nil)))))
+
+(defmethod database-sequence-next (sequence-name
+ (database postgresql-database))
+ (values
+ (parse-integer
+ (caar
+ (database-query
+ (concatenate 'string "SELECT NEXTVAL ('" (sql-escape sequence-name) "')")
+ database nil)))))
+
+(defmethod database-sequence-last (sequence-name (database postgresql-database))
+ (values
+ (parse-integer
+ (caar
+ (database-query
+ (concatenate 'string "SELECT LAST_VALUE ('" sequence-name "')")
+ database nil)))))
+
+(defmethod database-create (connection-spec (type (eql :postgresql)))
+ (destructuring-bind (host name user password) connection-spec
+ (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 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
+ (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)
+