X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=db-postgresql%2Fpostgresql-sql.lisp;h=5758730e07f19486a79086b364456f3277a8a080;hb=064bb338ef1375940085db10ec5a202d32e6b68b;hp=ac13a3054deb0e178d2e9a4a0af496e911f94041;hpb=cf0a1997b66f3e09e595c3c6fb04b08c0d2a4e61;p=clsql.git diff --git a/db-postgresql/postgresql-sql.lisp b/db-postgresql/postgresql-sql.lisp index ac13a30..5758730 100644 --- a/db-postgresql/postgresql-sql.lisp +++ b/db-postgresql/postgresql-sql.lisp @@ -4,14 +4,9 @@ ;;;; ;;;; 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: postgresql-sql.lisp,v 1.3 2003/07/21 01:45:45 kevin Exp $ -;;;; -;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg -;;;; and Copyright (c) 1999-2001 by Pierre R. Mai +;;;; $Id$ ;;;; ;;;; CLSQL users are granted the rights to distribute and use this software ;;;; as governed by the terms of the Lisp Lesser GNU Public License @@ -84,7 +79,10 @@ (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) @@ -98,6 +96,7 @@ (declare (ignore password options tty)) (concatenate 'string (etypecase host + (null "localhost") (pathname (namestring host)) (string host)) (when port @@ -137,6 +136,7 @@ (make-instance 'postgresql-database :name (database-name-from-spec connection-spec database-type) + :database-type :postgresql :connection-spec connection-spec :conn-ptr connection))))) @@ -146,7 +146,7 @@ (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) @@ -163,8 +163,8 @@ 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 @@ -173,7 +173,7 @@ (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 @@ -221,8 +221,9 @@ (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) @@ -241,7 +242,7 @@ :num-fields (PQnfields result) :num-tuples (PQntuples result) :types (canonicalize-types - types + result-types (PQnfields result) result)))) (if full-set @@ -362,5 +363,215 @@ (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 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))) + (destructuring-bind (host name user password) connection-spec + (let ((database (database-connect (list host "template1" user password) + type))) + (unwind-protect + (when + (find name (database-query "select datname from pg_database" + database :auto) + :key #'car :test #'string-equal) + t) + (database-disconnect database))))) + +(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 + (etypecase table + (string table) + (clsql-base-sys::sql-create-table + (symbol-name + (slot-value table 'clsql-base-sys::name))))))) + 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)))) + (when (clsql-base-sys:database-type-library-loaded :postgresql) (clsql-base-sys:initialize-database-type :database-type :postgresql))