;;;;
;;;; Name: postgresql-sql.lisp
;;;; Purpose: High-level PostgreSQL interface using UFFI
-;;;; 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 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.
(declare (ignore password options tty))
(concatenate 'string
(etypecase host
+ (null "localhost")
(pathname (namestring host))
(string host))
(when port
(setf (database-conn-ptr database) nil)
t)
-(defmethod database-query (query-expression (database postgresql-database) types)
+(defmethod database-query (query-expression (database postgresql-database) result-types)
(let ((conn-ptr (database-conn-ptr database)))
(declare (type pgsql-conn-def conn-ptr))
(uffi:with-cstring (query-native query-expression)
nil)
(#.pgsql-exec-status-type#tuples-ok
(let ((num-fields (PQnfields result)))
- (setq types
- (canonicalize-types types num-fields
+ (setq result-types
+ (canonicalize-types result-types num-fields
result))
(loop for tuple-index from 0 below (PQntuples result)
collect
(if (zerop (PQgetisnull result tuple-index i))
(convert-raw-field
(PQgetvalue result tuple-index i)
- types i)
+ result-types i)
nil)))))
(t
(error 'clsql-sql-error
(num-fields 0 :type integer)
(tuple-index 0 :type integer))
-(defmethod database-query-result-set (query-expression (database postgresql-database)
- &key full-set types)
+(defmethod database-query-result-set ((query-expression string)
+ (database postgresql-database)
+ &key full-set result-types)
(let ((conn-ptr (database-conn-ptr database)))
(declare (type pgsql-conn-def conn-ptr))
(uffi:with-cstring (query-native query-expression)
:num-fields (PQnfields result)
:num-tuples (PQntuples result)
:types (canonicalize-types
- types
+ result-types
(PQnfields result)
result))))
(if full-set
(defmethod database-delete-large-object (object-id (database postgresql-database))
(lo-unlink (database-conn-ptr database) object-id))
+
+;;; Object listing
+
+(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))))
+
+(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-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 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*)))))
+
+(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*)))))
+
+
+(defmethod database-probe (connection-spec (type (eql :postgresql)))
+ (destructuring-bind (host name user password) connection-spec
+ (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)))))
+
+
(when (clsql-base-sys:database-type-library-loaded :postgresql)
(clsql-base-sys:initialize-database-type :database-type :postgresql))
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