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# -- dio_Mysql.tcl -- Mysql backend.
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
package require DIO 1.2
package provide dio_Mysql 1.2
namespace eval DIO {
::itcl::class Mysql {
inherit Database
constructor {args} {eval configure -interface Mysql $args} {
if { [catch {package require Mysqltcl}] \
&& [catch {package require mysqltcl}] \
&& [catch {package require mysql}]} {
return -code error "No MySQL Tcl package available"
}
eval configure $args
if {[::rivet::lempty $db]} {
if {[::rivet::lempty $user]} {
set user $::env(USER)
}
set db $user
}
}
destructor {
close
}
method open {} {
set command "mysqlconnect"
if {![::rivet::lempty $user]} { lappend command -user $user }
if {![::rivet::lempty $pass]} { lappend command -password $pass }
if {![::rivet::lempty $port]} { lappend command -port $port }
if {![::rivet::lempty $host]} { lappend command -host $host }
#if {![::rivet::lempty $encoding]} { lappend command -encoding $encoding }
if {$clientargs != ""} {
set command [lappend command {*}$clientargs]
}
#puts stderr "evaluating $command"
if {[catch $command error]} { return -code error $error }
set conn $error
if {![::rivet::lempty $db]} { mysqluse $conn $db }
}
method close {} {
if {![info exists conn]} { return }
catch {mysqlclose $conn}
unset conn
}
method exec {req} {
if {![info exists conn] || ![mysqlping $conn]} { open }
set cmd mysqlexec
#
# if {[::string tolower [lindex $req 0]] == "select"} { set cmd mysqlsel }
# select is a 6 characters word, so let's see if the query is a select
#
set q [::string trim $req]
# set q [::string tolower $q]
# set q [::string range $q 0 5]
# if {[::string match select $q]} { set cmd mysqlsel }
if {[regexp -nocase {^\(*\s*select\s+} $q]} { set cmd mysqlsel }
set errorinfo ""
if {[catch {$cmd $conn $req} error]} {
set errorinfo $error
set obj [result Mysql -error 1 -errorinfo [::list $error]]
return $obj
}
if {[catch {mysqlcol $conn -current name} fields]} { set fields "" }
set obj [result Mysql -resultid $conn \
-numrows [::list $error] \
-fields [::list $fields]]
return $obj
}
method lastkey {} {
if {![info exists conn] || ![mysqlping $conn]} { return }
return [mysqlinsertid $conn]
}
method quote {string} {
if {![catch {mysqlquote $string} result]} { return $result }
regsub -all {'} $string {\'} string
return $string
}
method sql_limit_syntax {limit {offset ""}} {
if {[::rivet::lempty $offset]} {
return " LIMIT $limit"
}
return " LIMIT [expr $offset - 1],$limit"
}
method handle {} {
if {![info exists conn] || ![mysqlping $conn]} { open }
return $conn
}
public variable db "" {
if {[info exists conn] && [mysqlping $conn]} {
mysqluse $conn $db
}
}
protected method handle_client_arguments {cargs} {
# we assign only the accepted options
set clientargs {}
foreach {a v} $cargs {
if {($a == "-encoding") || \
($a == "-localfiles") || \
($a == "-ssl") || \
($a == "-sslkey") || \
($a == "-sslcert") || \
($a == "-sslca") || \
($a == "-sslcapath") || \
($a == "-sslcipher") || \
($a == "-socket")} {
lappend clientargs $a $v
}
}
}
#public variable interface "Mysql"
private variable conn
} ; ## ::itcl::class Mysql
::itcl::class MysqlResult {
inherit Result
constructor {args} {
eval configure $args
}
destructor {
}
method nextrow {} {
return [mysqlnext $resultid]
}
} ; ## ::itcl::class MysqlResult
}
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