--- /dev/null
+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name: postgresql-socket-sql.sql
+;;;; Purpose: High-level PostgreSQL interface using socket
+;;;; Authors: Kevin M. Rosenberg based on original code by Pierre R. Mai
+;;;; Created: Feb 2002
+;;;;
+;;;; $Id$
+;;;;
+;;;; This file, part of CLSQL, is Copyright (c) 2002-2007 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.
+;;;; *************************************************************************
+
+(in-package #:cl-user)
+
+(defpackage :clsql-postgresql-socket3
+ (:use #:common-lisp #:clsql-sys #:postgresql-socket3)
+ (:export #:postgresql-socket3-database)
+ (:documentation "This is the CLSQL socket interface (protocol version 3) to PostgreSQL."))
+
+(in-package #:clsql-postgresql-socket3)
+
+(defvar *sqlreader* (cl-postgres:copy-sql-readtable))
+(let ((dt-fn (lambda (useconds-since-2000)
+ (let ((sec (truncate
+ (/ useconds-since-2000
+ 1000000)))
+ (usec (mod useconds-since-2000
+ 1000000)))
+ (clsql:make-time :year 2000 :second sec :usec usec)))))
+ (cl-postgres:set-sql-datetime-readers
+ :table *sqlreader*
+ :date (lambda (days-since-2000)
+ (clsql:make-date :year 2000 :day (+ 1 days-since-2000)))
+ :timestamp dt-fn
+ :timestamp-with-timezone dt-fn))
+
+
+
+;; interface foreign library loading routines
+
+(clsql-sys:database-type-load-foreign :postgresql-socket3)
+
+
+(defmethod database-initialize-database-type ((database-type
+ (eql :postgresql-socket3)))
+ t)
+
+
+;; Field type conversion
+(defun convert-to-clsql-warning (database condition)
+ (ecase *backend-warning-behavior*
+ (:warn
+ (warn 'sql-database-warning :database database
+ :message (cl-postgres:database-error-message condition)))
+ (:error
+ (error 'sql-database-error :database database
+ :message (format nil "Warning upgraded to error: ~A"
+ (cl-postgres:database-error-message condition))))
+ ((:ignore nil)
+ ;; do nothing
+ )))
+
+(defun convert-to-clsql-error (database expression condition)
+ (error 'sql-database-data-error
+ :database database
+ :expression expression
+ :error-id (type-of condition)
+ :message (cl-postgres:database-error-message condition)))
+
+(defmacro with-postgresql-handlers
+ ((database &optional expression)
+ &body body)
+ (let ((database-var (gensym))
+ (expression-var (gensym)))
+ `(let ((,database-var ,database)
+ (,expression-var ,expression))
+ (handler-bind ((postgresql-warning
+ (lambda (c)
+ (convert-to-clsql-warning ,database-var c)))
+ (cl-postgres:database-error
+ (lambda (c)
+ (convert-to-clsql-error
+ ,database-var ,expression-var c))))
+ ,@body))))
+
+
+
+(defclass postgresql-socket3-database (generic-postgresql-database)
+ ((connection :accessor database-connection :initarg :connection
+ :type cl-postgres:database-connection)))
+
+(defmethod database-type ((database postgresql-socket3-database))
+ :postgresql-socket3)
+
+(defmethod database-name-from-spec (connection-spec (database-type (eql :postgresql-socket3)))
+ (check-connection-spec connection-spec database-type
+ (host db user password &optional port options tty))
+ (destructuring-bind (host db user password &optional port options tty)
+ connection-spec
+ (declare (ignore password options tty))
+ (concatenate 'string
+ (etypecase host
+ (null
+ "localhost")
+ (pathname (namestring host))
+ (string host))
+ (when port
+ (concatenate 'string
+ ":"
+ (etypecase port
+ (integer (write-to-string port))
+ (string port))))
+ "/" db "/" user)))
+
+(defmethod database-connect (connection-spec
+ (database-type (eql :postgresql-socket3)))
+ (check-connection-spec connection-spec database-type
+ (host db user password &optional port options tty))
+ (destructuring-bind (host db user password &optional
+ (port +postgresql-server-default-port+)
+ (options "") (tty ""))
+ connection-spec
+ (declare (ignore options tty))
+ (handler-case
+ (handler-bind ((warning
+ (lambda (c)
+ (warn 'sql-warning
+ :format-control "~A"
+ :format-arguments
+ (list (princ-to-string c))))))
+ (cl-postgres:open-database db user password host port))
+ (cl-postgres:database-error (c)
+ ;; Connect failed
+ (error 'sql-connection-error
+ :database-type database-type
+ :connection-spec connection-spec
+ :error-id (type-of c)
+ :message (cl-postgres:database-error-message c)))
+ (:no-error (connection)
+ ;; Success, make instance
+ (make-instance 'postgresql-socket3-database
+ :name (database-name-from-spec connection-spec database-type)
+ :database-type :postgresql-socket3
+ :connection-spec connection-spec
+ :connection connection)))))
+
+(defmethod database-disconnect ((database postgresql-socket3-database))
+ (cl-postgres:close-database (database-connection database))
+ t)
+
+(defvar *include-field-names* nil)
+
+
+;; THE FOLLOWING MACRO EXPANDS TO THE FUNCTION BELOW IT,
+;; BUT TO GET null CONVENTIONS CORRECT I NEEDED TO TWEAK THE EXPANSION
+;;
+;; (cl-postgres:def-row-reader clsql-default-row-reader (fields)
+;; (values (loop :while (cl-postgres:next-row)
+;; :collect (loop :for field :across fields
+;; :collect (cl-postgres:next-field field)))
+;; (when *include-field-names*
+;; (loop :for field :across fields
+;; :collect (cl-postgres:field-name field)))))
+
+
+
+(defun clsql-default-row-reader (stream fields)
+ (declare (type stream stream)
+ (type (simple-array cl-postgres::field-description) fields))
+ (flet ((cl-postgres:next-row ()
+ (cl-postgres::look-for-row stream))
+ (cl-postgres:next-field (cl-postgres::field)
+ (declare (type cl-postgres::field-description cl-postgres::field))
+ (let ((cl-postgres::size (cl-postgres::read-int4 stream)))
+ (declare (type (signed-byte 32) cl-postgres::size))
+ (if (eq cl-postgres::size -1)
+ nil
+ (funcall (cl-postgres::field-interpreter cl-postgres::field)
+ stream cl-postgres::size)))))
+ (let ((results (loop :while (cl-postgres:next-row)
+ :collect (loop :for field :across fields
+ :collect (cl-postgres:next-field field))))
+ (col-names (when *include-field-names*
+ (loop :for field :across fields
+ :collect (cl-postgres:field-name field)))))
+ ;;multiple return values were not working here
+ (list results col-names))))
+
+(defmethod database-query ((expression string) (database postgresql-socket3-database) result-types field-names)
+ (let ((connection (database-connection database))
+ (cl-postgres:*sql-readtable* *sqlreader*))
+ (with-postgresql-handlers (database expression)
+ (let ((*include-field-names* field-names))
+ (apply #'values (cl-postgres:exec-query connection expression #'clsql-default-row-reader)))
+ )))
+
+(defmethod query ((obj command-object) &key (database *default-database*)
+ (result-types :auto) (flatp nil) (field-names t))
+ (clsql-sys::record-sql-command (expression obj) database)
+ (multiple-value-bind (rows names)
+ (database-query obj database result-types field-names)
+ (let ((result (if (and flatp (= 1 (length (car rows))))
+ (mapcar #'car rows)
+ rows)))
+ (clsql-sys::record-sql-result result database)
+ (if field-names
+ (values result names)
+ result))))
+
+(defmethod database-query ((obj command-object) (database postgresql-socket3-database) result-types field-names)
+ (let ((connection (database-connection database))
+ (cl-postgres:*sql-readtable* *sqlreader*))
+ (with-postgresql-handlers (database obj)
+ (let ((*include-field-names* field-names))
+ (unless (has-been-prepared obj)
+ (cl-postgres:prepare-query connection (prepared-name obj) (expression obj))
+ (setf (has-been-prepared obj) T))
+ (apply #'values (cl-postgres:exec-prepared
+ connection
+ (prepared-name obj)
+ (parameters obj)
+ #'clsql-default-row-reader))))))
+
+(defmethod database-execute-command
+ ((expression string) (database postgresql-socket3-database))
+ (let ((connection (database-connection database)))
+ (with-postgresql-handlers (database expression)
+ ;; return row count?
+ (second (multiple-value-list (cl-postgres:exec-query connection expression))))))
+
+(defmethod execute-command ((obj command-object)
+ &key (database *default-database*))
+ (clsql-sys::record-sql-command (expression obj) database)
+ (let ((res (database-execute-command obj database)))
+ (clsql-sys::record-sql-result res database)
+ ;; return row count?
+ res))
+
+(defmethod database-execute-command
+ ((obj command-object) (database postgresql-socket3-database))
+ (let ((connection (database-connection database)))
+ (with-postgresql-handlers (database obj)
+ (unless (has-been-prepared obj)
+ (cl-postgres:prepare-query connection (prepared-name obj) (expression obj))
+ (setf (has-been-prepared obj) T))
+ (second (multiple-value-list (cl-postgres:exec-prepared connection (prepared-name obj) (parameters obj)))))))
+
+;;;; Cursoring interface
+
+
+(defmethod database-query-result-set ((expression string)
+ (database postgresql-socket3-database)
+ &key full-set result-types)
+ (declare (ignore result-types))
+ (declare (ignore full-set))
+ (error "Cursoring interface is not supported for postgresql-socket3-database try cl-postgres:exec-query with a custom row-reader"))
+
+(defmethod database-dump-result-set (result-set
+ (database postgresql-socket3-database))
+ (error "Cursoring interface is not supported for postgresql-socket3-database try cl-postgres:exec-query with a custom row-reader")
+ T)
+
+(defmethod database-store-next-row (result-set
+ (database postgresql-socket3-database)
+ list)
+ (error "Cursoring interface is not supported for postgresql-socket3-database try cl-postgres:exec-query with a custom row-reader"))
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+
+(defmethod database-create (connection-spec (type (eql :postgresql-socket3)))
+ (destructuring-bind (host name user password &optional port options tty) connection-spec
+ (declare (ignore port options tty))
+ (let ((database (database-connect (list host "postgres" user password)
+ type)))
+ (setf (slot-value database 'clsql-sys::state) :open)
+ (unwind-protect
+ (database-execute-command (format nil "create database ~A" name) database)
+ (database-disconnect database)))))
+
+(defmethod database-destroy (connection-spec (type (eql :postgresql-socket3)))
+ (destructuring-bind (host name user password &optional port options tty) connection-spec
+ (declare (ignore port options tty))
+ (let ((database (database-connect (list host "postgres" user password)
+ type)))
+ (setf (slot-value database 'clsql-sys::state) :open)
+ (unwind-protect
+ (database-execute-command (format nil "drop database ~A" name) database)
+ (database-disconnect database)))))
+
+
+(defmethod database-probe (connection-spec (type (eql :postgresql-socket3)))
+ (when (find (second connection-spec) (database-list connection-spec type)
+ :test #'string-equal)
+ t))
+
+
+;; Database capabilities
+
+(defmethod db-backend-has-create/destroy-db? ((db-type (eql :postgresql-socket3)))
+ nil)
+
+(defmethod db-type-has-fancy-math? ((db-type (eql :postgresql-socket3)))
+ t)
+
+(defmethod db-type-default-case ((db-type (eql :postgresql-socket3)))
+ :lower)
+
+(defmethod database-underlying-type ((database postgresql-socket3-database))
+ :postgresql)
+
+(when (clsql-sys:database-type-library-loaded :postgresql-socket3)
+ (clsql-sys:initialize-database-type :database-type :postgresql-socket3))
+
+
+;; Type munging functions
+
+(defmethod read-sql-value (val (type (eql 'boolean)) (database postgresql-socket3-database) db-type)
+ (declare (ignore database db-type))
+ val)
+
+(defmethod read-sql-value (val (type (eql 'generalized-boolean)) (database postgresql-socket3-database) db-type)
+ (declare (ignore database db-type))
+ val)
+
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