X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=base%2Fbasic-sql.lisp;h=cd9c177bab8545812c8c8aa0fae4e396f1d76c68;hb=7e20a5285824bbbd2aa6fae61da73465ed2e8557;hp=ea9245e5aa8e03b8a070e1b0ff68a20eaa096592;hpb=23e7f17ba8c579cf935325f4004aad747d33cce8;p=clsql.git diff --git a/base/basic-sql.lisp b/base/basic-sql.lisp index ea9245e..cd9c177 100644 --- a/base/basic-sql.lisp +++ b/base/basic-sql.lisp @@ -1,8 +1,18 @@ ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*- ;;;; ************************************************************************* -;;;; $Id: $ +;;;; +;;;; $Id$ +;;;; +;;;; Base SQL functions +;;;; +;;;; This file is part of CLSQL. +;;;; +;;;; 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 #:clsql-base-sys) +(in-package #:clsql-base) ;;; Query @@ -20,16 +30,17 @@ one result per row. Returns a list of lists of values of the result of that expression and a list of field names selected in sql-exp.")) (defmethod query ((query-expression string) &key (database *default-database*) - (result-types nil) (flatp nil)) - (record-sql-command query-expression database) - (let* ((res (database-query query-expression database result-types)) - (res (if (and flatp (= (length - (slot-value query-expression 'selections)) - 1)) - (mapcar #'car res) - res))) - (record-sql-result res database) - res)) + (result-types :auto) (flatp nil) (field-names t)) + (record-sql-action query-expression :query database) + (multiple-value-bind (rows names) (database-query query-expression database result-types + field-names) + (let ((result (if (and flatp (= 1 (length (car rows)))) + (mapcar #'car rows) + rows))) + (record-sql-action result :result database) + (if field-names + (values result names) + result)))) ;;; Execute @@ -44,61 +55,77 @@ pair.")) (defmethod execute-command ((sql-expression string) &key (database *default-database*)) - (record-sql-command sql-expression database) + (record-sql-action sql-expression :command database) (let ((res (database-execute-command sql-expression database))) - (record-sql-result res database)) + (record-sql-action res :result database)) (values)) - (defmacro do-query (((&rest args) query-expression - &key (database '*default-database*) (types nil)) + &key (database '*default-database*) (result-types :auto)) &body body) - "Repeatedly executes BODY within a binding of ARGS on the attributes -of each record resulting from QUERY. The return value is determined by -the result of executing BODY. The default value of DATABASE is -*DEFAULT-DATABASE*." + "Repeatedly executes BODY within a binding of ARGS on the +attributes of each record resulting from QUERY-EXPRESSION. The +return value is determined by the result of executing BODY. The +default value of DATABASE is *DEFAULT-DATABASE*." (let ((result-set (gensym)) (columns (gensym)) (row (gensym)) (db (gensym))) - `(let ((,db ,database)) - (multiple-value-bind (,result-set ,columns) - (database-query-result-set ,query-expression ,db - :full-set nil :types ,types) - (when ,result-set - (unwind-protect - (do ((,row (make-list ,columns))) - ((not (database-store-next-row ,result-set ,db ,row)) - nil) - (destructuring-bind ,args ,row - ,@body)) - (database-dump-result-set ,result-set ,db))))))) + `(if (listp ,query-expression) + ;; Object query + (dolist (,row ,query-expression) + (destructuring-bind ,args + ,row + ,@body)) + ;; Functional query + (let ((,db ,database)) + (multiple-value-bind (,result-set ,columns) + (database-query-result-set ,query-expression ,db + :full-set nil + :result-types ,result-types) + (when ,result-set + (unwind-protect + (do ((,row (make-list ,columns))) + ((not (database-store-next-row ,result-set ,db ,row)) + nil) + (destructuring-bind ,args ,row + ,@body)) + (database-dump-result-set ,result-set ,db)))))))) (defun map-query (output-type-spec function query-expression &key (database *default-database*) - (types nil)) - "Map the function over all tuples that are returned by the query in -query-expression. The results of the function are collected as -specified in output-type-spec and returned like in MAP." - (macrolet ((type-specifier-atom (type) - `(if (atom ,type) ,type (car ,type)))) - (case (type-specifier-atom output-type-spec) - ((nil) - (map-query-for-effect function query-expression database types)) - (list - (map-query-to-list function query-expression database types)) - ((simple-vector simple-string vector string array simple-array - bit-vector simple-bit-vector base-string - simple-base-string) - (map-query-to-simple output-type-spec function query-expression database types)) - (t - (funcall #'map-query (cmucl-compat:result-type-or-lose output-type-spec t) - function query-expression :database database :types types))))) - -(defun map-query-for-effect (function query-expression database types) + (result-types :auto)) + "Map the function over all tuples that are returned by the +query in QUERY-EXPRESSION. The results of the function are +collected as specified in OUTPUT-TYPE-SPEC and returned like in +MAP." + (if (listp query-expression) + ;; Object query + (map output-type-spec #'(lambda (x) (apply function x)) query-expression) + ;; Functional query + (macrolet ((type-specifier-atom (type) + `(if (atom ,type) ,type (car ,type)))) + (case (type-specifier-atom output-type-spec) + ((nil) + (map-query-for-effect function query-expression database + result-types)) + (list + (map-query-to-list function query-expression database result-types)) + ((simple-vector simple-string vector string array simple-array + bit-vector simple-bit-vector base-string + simple-base-string) + (map-query-to-simple output-type-spec function query-expression + database result-types)) + (t + (funcall #'map-query + (cmucl-compat:result-type-or-lose output-type-spec t) + function query-expression :database database + :result-types result-types)))))) + +(defun map-query-for-effect (function query-expression database result-types) (multiple-value-bind (result-set columns) (database-query-result-set query-expression database :full-set nil - :types types) + :result-types result-types) (when result-set (unwind-protect (do ((row (make-list columns))) @@ -107,10 +134,10 @@ specified in output-type-spec and returned like in MAP." (apply function row)) (database-dump-result-set result-set database))))) -(defun map-query-to-list (function query-expression database types) +(defun map-query-to-list (function query-expression database result-types) (multiple-value-bind (result-set columns) (database-query-result-set query-expression database :full-set nil - :types types) + :result-types result-types) (when result-set (unwind-protect (let ((result (list nil))) @@ -122,10 +149,10 @@ specified in output-type-spec and returned like in MAP." (database-dump-result-set result-set database))))) -(defun map-query-to-simple (output-type-spec function query-expression database types) +(defun map-query-to-simple (output-type-spec function query-expression database result-types) (multiple-value-bind (result-set columns rows) (database-query-result-set query-expression database :full-set t - :types types) + :result-types result-types) (when result-set (unwind-protect (if rows @@ -156,5 +183,21 @@ specified in output-type-spec and returned like in MAP." (apply function row)))) (database-dump-result-set result-set database))))) +;;; Large objects support + +(defun create-large-object (&key (database *default-database*)) + "Creates a new large object in the database and returns the object identifier" + (database-create-large-object database)) + +(defun write-large-object (object-id data &key (database *default-database*)) + "Writes data to the large object" + (database-write-large-object object-id data database)) + +(defun read-large-object (object-id &key (database *default-database*)) + "Reads the large object content" + (database-read-large-object object-id database)) +(defun delete-large-object (object-id &key (database *default-database*)) + "Deletes the large object in the database" + (database-delete-large-object object-id database))