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# dio_Oracle.tcl -- Oracle (odbc) backend.
# Copyright 2006-2024 The Apache Software Foundation
# 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_Oracle 1.2
namespace eval DIO {
::itcl::class Oracle {
inherit Database
constructor {args} {eval configure -interface Oracle $args} {
if {[catch {package require Oratcl}]} {
return -code error "No Oracle Tcl package available"
}
eval configure $args
if {[::rivet::lempty $db]} {
if {[::rivet::lempty $user]} {:b
set user $::env(USER)
}
set db $user
}
}
destructor {
close
}
method open {} {
set command "::oralogon"
if {![::rivet::lempty $user]} { append command " $user" }
if {![::rivet::lempty $pass]} { append command "/$pass" }
if {![::rivet::lempty $host]} { append command "@$host" }
if {![::rivet::lempty $port]} { append command -port $port }
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 {::oraclose $conn}
unset conn
}
method exec {req} {
if {![info exists conn]} { open }
set _cur [::oraopen $conn]
set cmd ::orasql
set is_select 0
if {[::string tolower [lindex $req 0]] == "select"} {
set cmd ::orasql
set is_select 1
}
set errorinfo ""
#puts "ORA:$is_select:$req:<br>"
if {[catch {$cmd $_cur $req} error]} {
#puts "ORA:error:$error:<br>"
set errorinfo $error
catch {::oraclose $_cur}
set obj [result $interface -error 1 -errorinfo [::list $error]]
return $obj
}
if {[catch {::oracols $_cur name} fields]} { set fields "" }
::oracommit $conn
set my_fields $fields
set fields [::list]
foreach field $my_fields {
set field [::string tolower $field]
lappend fields $field
}
set error [::oramsg $_cur rows]
set res_cmd "result"
lappend res_cmd $interface -resultid $_cur
lappend res_cmd -numrows [::list $error] -fields [::list $fields]
lappend res_cmd -fetch_first_row $is_select
set obj [eval $res_cmd]
if {!$is_select} {
::oraclose $_cur
}
return $obj
}
method lastkey {} {
if {![info exists conn]} { return }
return [mysqlinsertid $conn]
}
method quote {string} {
regsub -all {'} $string {\'} string
return $string
}
method sql_limit_syntax {limit {offset ""}} {
# temporary
return ""
if {[::rivet::lempty $offset]} {
return " LIMIT $limit"
}
return " LIMIT [expr $offset - 1],$limit"
}
method handle {} {
if {![info exists conn]} { open }
return $conn
}
public variable db "" {
if {[info exists conn]} {
mysqluse $conn $db
}
}
#public variable interface "Oracle"
private variable conn
private variable _cur
} ; ## ::itcl::class Mysql
::itcl::class OracleResult {
inherit Result
public variable fetch_first_row 0
private variable _data ""
private variable _have_first_row 0
constructor {args} {
eval configure $args
if {$fetch_first_row} {
if {[llength [nextrow]] == 0} {
set _have_first_row 0
numrows 0
} else {
set _have_first_row 1
numrows 1
}
}
set fetch_first_row 0
}
destructor {
if {[string length $resultid] > 0} {
catch {::oraclose $resultid}
}
}
method nextrow {} {
if {[string length $resultid] == 0} {
return [::list]
}
if {$_have_first_row} {
set _have_first_row 0
return $_data
}
set ret [::orafetch $resultid -datavariable _data]
switch $ret {
0 {
return $_data
}
1403 {
::oraclose $resultid
set resultid ""
return [::list]
}
default {
# FIXME!! have to handle error here !!
return [::list]
}
}
}
} ; ## ::itcl::class OracleResult
}
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