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# dio_Mysql.tcl -- Mysql backend.
# Copyright 2002-2004 The Apache Software Foundation
# Licensed 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.
# $Id: dio_Mysql.tcl 1565265 2014-02-06 14:20:03Z mxmanghi $
package provide dio_Mysql 0.2
namespace eval DIO {
::itcl::class Mysql {
inherit Database
constructor {args} {eval configure $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 {[lempty $db]} {
if {[lempty $user]} {
set user $::env(USER)
}
set db $user
}
}
destructor {
close
}
method open {} {
set command "mysqlconnect"
if {![lempty $user]} { lappend command -user $user }
if {![lempty $pass]} { lappend command -password $pass }
if {![lempty $port]} { lappend command -port $port }
if {![lempty $host]} { lappend command -host $host }
if {[catch $command error]} { return -code error $error }
set conn $error
if {![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 {[lempty $offset]} {
return " LIMIT $limit"
}
return " LIMIT [expr $offset - 1],$limit"
}
method handle {} {
if {![info exists conn] || ![mysqlping $conn]} { open }
return $conn
}
method makeDBFieldValue {table_name field_name val {convert_to {}}} {
if {[info exists specialFields(${table_name}@${field_name})]} {
switch $specialFields(${table_name}@${field_name}) {
DATE {
set secs [clock scan $val]
set my_val [clock format $secs -format {%Y-%m-%d}]
return "DATE_FORMAT('$my_val','%Y-%m-%d')"
}
DATETIME {
set secs [clock scan $val]
set my_val [clock format $secs -format {%Y-%m-%d %T}]
return "DATE_FORMAT('$my_val','%Y-%m-%d %T')"
}
NOW {
# we try to be coherent with the original purpose of this method whose
# goal is endow the class with a uniform way to handle timestamps.
# E.g.: Package session expects this case to return a timestamp in seconds
# so that differences with timestamps returned by [clock seconds]
# can be done and session expirations are computed consistently.
# (Bug #53703)
switch $convert_to {
SECS {
if {[::string compare $val "now"] == 0} {
# set secs [clock seconds]
# set my_val [clock format $secs -format {%Y%m%d%H%M%S}]
# return $my_val
return [clock seconds]
} else {
return "UNIX_TIMESTAMP($field_name)"
}
}
default {
if {[::string compare $val, "now"] == 0} {
set secs [clock seconds]
} else {
set secs [clock scan $val]
}
# this is kind of going back and forth from the same
# format,
#set my_val [clock format $secs -format {%Y-%m-%d %T}]
return "FROM_UNIXTIME('$secs')"
}
}
}
default {
# no special code for that type!!
return "'[quote $val]'"
}
}
} else {
return "'[quote $val]'"
}
}
public variable db "" {
if {[info exists conn] && [mysqlping $conn]} {
mysqluse $conn $db
}
}
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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