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Oracle.pm
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Oracle.pm
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# Oracle.pm
#
# Copyright (c) 1994-2005 Tim Bunce, Ireland
# Copyright (c) 2006-2008 John Scoles (The Pythian Group), Canada
#
# See COPYRIGHT section in the documentation below
require 5.006;
$DBD::Oracle::VERSION = '1.33_00';
my $ORACLE_ENV = ($^O eq 'VMS') ? 'ORA_ROOT' : 'ORACLE_HOME';
{
package DBD::Oracle;
use DBI ();
use DynaLoader ();
use Exporter ();
use DBD::Oracle::Object();
@ISA = qw(DynaLoader Exporter);
%EXPORT_TAGS = (
ora_types => [ qw(
ORA_VARCHAR2 ORA_STRING ORA_NUMBER ORA_LONG ORA_ROWID ORA_DATE
ORA_RAW ORA_LONGRAW ORA_CHAR ORA_CHARZ ORA_MLSLABEL ORA_XMLTYPE
ORA_CLOB ORA_BLOB ORA_RSET ORA_VARCHAR2_TABLE ORA_NUMBER_TABLE
SQLT_INT SQLT_FLT ORA_OCI SQLT_CHR SQLT_BIN
) ],
ora_session_modes => [ qw( ORA_SYSDBA ORA_SYSOPER ) ],
ora_fetch_orient => [ qw( OCI_FETCH_NEXT OCI_FETCH_CURRENT OCI_FETCH_FIRST
OCI_FETCH_LAST OCI_FETCH_PRIOR OCI_FETCH_ABSOLUTE
OCI_FETCH_RELATIVE)],
ora_exe_modes => [ qw( OCI_STMT_SCROLLABLE_READONLY)],
ora_fail_over => [ qw( OCI_FO_END OCI_FO_ABORT OCI_FO_REAUTH OCI_FO_BEGIN
OCI_FO_ERROR OCI_FO_NONE OCI_FO_SESSION OCI_FO_SELECT
OCI_FO_TXNAL)],
);
@EXPORT_OK = qw(OCI_FETCH_NEXT OCI_FETCH_CURRENT OCI_FETCH_FIRST OCI_FETCH_LAST OCI_FETCH_PRIOR
OCI_FETCH_ABSOLUTE OCI_FETCH_RELATIVE ORA_OCI SQLCS_IMPLICIT SQLCS_NCHAR ora_env_var ora_cygwin_set_env );
#unshift @EXPORT_OK, 'ora_cygwin_set_env' if $^O eq 'cygwin';
Exporter::export_ok_tags(qw(ora_types ora_session_modes ora_fetch_orient ora_exe_modes ora_fail_over));
my $Revision = substr(q$Revision: 1.103 $, 10);
require_version DBI 1.51;
bootstrap DBD::Oracle $VERSION;
$drh = undef; # holds driver handle once initialized
sub CLONE {
$drh = undef ;
}
sub driver{
return $drh if $drh;
my($class, $attr) = @_;
my $oci = DBD::Oracle::ORA_OCI();
$class .= "::dr";
# not a 'my' since we use it above to prevent multiple drivers
$drh = DBI::_new_drh($class, {
'Name' => 'Oracle',
'Version' => $VERSION,
'Err' => \my $err,
'Errstr' => \my $errstr,
'Attribution' => "DBD::Oracle $VERSION using OCI$oci by Tim Bunce",
});
DBD::Oracle::dr::init_oci($drh) ;
$drh->STORE('ShowErrorStatement', 1);
DBD::Oracle::db->install_method("ora_lob_read");
DBD::Oracle::db->install_method("ora_lob_write");
DBD::Oracle::db->install_method("ora_lob_append");
DBD::Oracle::db->install_method("ora_lob_trim");
DBD::Oracle::db->install_method("ora_lob_length");
DBD::Oracle::db->install_method("ora_lob_chunk_size");
DBD::Oracle::db->install_method("ora_lob_is_init");
DBD::Oracle::db->install_method("ora_nls_parameters");
DBD::Oracle::db->install_method("ora_can_unicode");
DBD::Oracle::db->install_method("ora_can_taf");
DBD::Oracle::db->install_method("ora_db_startup");
DBD::Oracle::db->install_method("ora_db_shutdown");
DBD::Oracle::st->install_method("ora_fetch_scroll");
DBD::Oracle::st->install_method("ora_scroll_position");
DBD::Oracle::st->install_method("ora_ping");
DBD::Oracle::st->install_method("ora_stmt_type_name");
DBD::Oracle::st->install_method("ora_stmt_type");
$drh;
}
END {
# Used to silence 'Bad free() ...' warnings caused by bugs in Oracle's code
# being detected by Perl's malloc.
$ENV{PERL_BADFREE} = 0;
#undef $Win32::TieRegistry::Registry if $Win32::TieRegistry::Registry;
}
sub AUTOLOAD {
(my $constname = $AUTOLOAD) =~ s/.*:://;
my $val = constant($constname);
*$AUTOLOAD = sub { $val };
goto &$AUTOLOAD;
}
}
{ package DBD::Oracle::dr; # ====== DRIVER ======
use strict;
my %dbnames = (); # holds list of known databases (oratab + tnsnames)
sub load_dbnames {
my ($drh) = @_;
my $debug = $drh->debug;
my $oracle_home = DBD::Oracle::ora_env_var($ORACLE_ENV);
local *FH;
my $d;
if (($^O eq 'MSWin32') or ($^O =~ /cygwin/i)) {
# XXX experimental, will probably change
$drh->trace_msg("Trying to fetch ORACLE_HOME and ORACLE_SID from the registry.\n")
if $debug;
my $sid = DBD::Oracle::ora_env_var("ORACLE_SID");
$dbnames{$sid} = $oracle_home if $sid and $oracle_home;
$drh->trace_msg("Found $sid \@ $oracle_home.\n") if $debug && $sid;
}
# get list of 'local' database SIDs from oratab
foreach $d (qw(/etc /var/opt/oracle), DBD::Oracle::ora_env_var("TNS_ADMIN")) {
next unless defined $d;
next unless open(FH, "<$d/oratab");
$drh->trace_msg("Loading $d/oratab\n") if $debug;
my $ot;
while (defined($ot = <FH>)) {
next unless $ot =~ m/^\s*(\w+)\s*:\s*(.*?)\s*:/;
$dbnames{$1} = $2; # store ORACLE_HOME value
$drh->trace_msg("Found $1 \@ $2.\n") if $debug;
}
close FH;
last;
}
# get list of 'remote' database connection identifiers
my @tns_admin = ( DBD::Oracle::ora_env_var("TNS_ADMIN"), '.' );
push @tns_admin, map { join '/', $oracle_home, $_ }
'network/admin', # OCI 7 and 8.1
'net80/admin', # OCI 8.0
if $oracle_home;
push @tns_admin, '/var/opt/oracle', '/etc';
TNS_ADMIN:
foreach $d ( @tns_admin ) {
next TNS_ADMIN unless $d and -f $d;
open FH, '<', "$d/tnsnames.ora" or next TNS_ADMIN;
$drh->trace_msg("Loading $d/tnsnames.ora\n") if $debug;
local *_;
while (<FH>) {
next unless m/^\s*([-\w\.]+)\s*=/;
my $name = $1;
$drh->trace_msg("Found $name. ".($dbnames{$name} ? "(oratab entry overridden)" : "")."\n")
if $debug;
$dbnames{$name} = 0; # exists but false (to distinguish from oratab)
}
close FH;
last;
}
$dbnames{0} = 1; # mark as loaded (even if empty)
}
sub data_sources {
my $drh = shift;
load_dbnames($drh) unless %dbnames;
my @names = sort keys %dbnames;
my @sources = map { $_ ? ("dbi:Oracle:$_") : () } @names;
return @sources;
}
sub connect {
my ($drh, $dbname, $user, $auth, $attr)= @_;
if ($dbname =~ /;/) {
my ($n,$v);
$dbname =~ s/^\s+//;
$dbname =~ s/\s+$//;
my @dbname = map {
($n,$v) = split /\s*=\s*/, $_, -1;
Carp::carp("DSN component '$_' is not in 'name=value' format")
unless defined $v && defined $n;
(uc($n), $v)
} split /\s*;\s*/, $dbname;
my %dbname = ( PROTOCOL => 'tcp', @dbname );
if ((exists $dbname{SERVER}) and ($dbname{SERVER} eq "POOLED")) {
$attr->{ora_drcp}=1;
}
# extract main attributes for connect_data portion
my @connect_data_attr = qw(SID INSTANCE_NAME SERVER SERVICE_NAME );
my %connect_data = map { ($_ => delete $dbname{$_}) }
grep { exists $dbname{$_} } @connect_data_attr;
my $connect_data = join "", map { "($_=$connect_data{$_})" } keys %connect_data;
return $drh->DBI::set_err(-1,
"Can't connect using this syntax without specifying a HOST and one of @connect_data_attr")
unless $dbname{HOST} and %connect_data;
my @addrs = map { "($_=$dbname{$_})" } keys %dbname;
my $addrs = join "", @addrs;
if ($dbname{PORT}) {
$addrs = "(ADDRESS=$addrs)";
}
else {
$addrs = "(ADDRESS_LIST=(ADDRESS=$addrs(PORT=1526))"
. "(ADDRESS=$addrs(PORT=1521)))";
}
$dbname = "(DESCRIPTION=$addrs(CONNECT_DATA=$connect_data))";
$drh->trace_msg("connect using '$dbname'");
}
# If the application is asking for specific database
# then we may have to mung the dbname
$dbname = $1 if !$dbname && $user && $user =~ s/\@(.*)//s;
$drh->trace_msg("$ORACLE_ENV environment variable not set\n")
if !$ENV{$ORACLE_ENV} and $^O ne "MSWin32";
# create a 'blank' dbh
$user = '' if not defined $user;
(my $user_only = $user) =~ s:/.*::;
if (substr($dbname,-7,7) eq ':POOLED'){
$dbname=substr($dbname,0,-7);
$attr->{ora_drcp} = 1;
}
elsif ($ENV{ORA_DRCP}){
$attr->{ora_drcp} = 1;
}
my ($dbh, $dbh_inner) = DBI::_new_dbh($drh, {
'Name' => $dbname,
'dbi_imp_data' => $attr->{dbi_imp_data},
# these two are just for backwards compatibility
'USER' => uc $user_only, 'CURRENT_USER' => uc $user_only,
});
# Call Oracle OCI logon func in Oracle.xs file
# and populate internal handle data.
if (exists $ENV{ORA_DRCP_CLASS}) {
$attr->{ora_drcp_class} = $ENV{ORA_DRCP_CLASS}
}
if($attr->{ora_drcp_class}){
# if using ora_drcp_class it cannot contain more than 1024 bytes
# and cannot contain a *
if (index($attr->{ora_drcp_class},'*') !=-1){
Carp::croak("ora_drcp_class cannot contain a '*'!");
}
if (length($attr->{ora_drcp_class}) > 1024){
Carp::croak("ora_drcp_class must be less than 1024 characters!");
}
}
if (exists $ENV{ORA_DRCP_MIN}) {
$attr->{ora_drcp_min} = $ENV{ORA_DRCP_MIN}
}
if (exists $ENV{ORA_DRCP_MAX}) {
$attr->{ora_drcp_max} = $ENV{ORA_DRCP_MAX}
}
if (exists $ENV{ORA_DRCP_INCR}) {
$attr->{ora_drcp_incr} = $ENV{ORA_DRCP_INCR}
}
{
local @SIG{ @{ $attr->{ora_connect_with_default_signals} } }
if $attr->{ora_connect_with_default_signals};
DBD::Oracle::db::_login($dbh, $dbname, $user, $auth, $attr)
or return undef;
}
unless (length $user_only) {
$user_only = $dbh->selectrow_array(q{
SELECT SYS_CONTEXT('userenv','session_user') FROM DUAL
});
$dbh_inner->{Username} = $user_only;
# these two are just for backwards compatibility
$dbh_inner->{USER} = $dbh_inner->{CURRENT_USER} = uc $user_only;
}
if ($ENV{ORA_DBD_NCS_BUFFER}){
$dbh->{'ora_ncs_buff_mtpl'}= $ENV{ORA_DBD_NCS_BUFFER};
}
$dbh;
}
sub private_attribute_info {
return { ora_home_key=>undef};
}
}
{ package DBD::Oracle::db; # ====== DATABASE ======
use strict;
use DBI qw(:sql_types);
sub prepare {
my($dbh, $statement, @attribs)= @_;
# create a 'blank' sth
my $sth = DBI::_new_sth($dbh, {
'Statement' => $statement,
});
# Call Oracle OCI parse func in Oracle.xs file.
# and populate internal handle data.
DBD::Oracle::st::_prepare($sth, $statement, @attribs)
or return undef;
$sth;
}
#Ah! I see you have the machine that goes PING!!
#Yes!! We leased it from the company that made it
#then the cost came out of the operating budget
#not the capital ...
sub ping {
my($dbh) = @_;
local $@;
my $ok = 0;
eval {
local $SIG{__DIE__};
local $SIG{__WARN__};
$ok=ora_ping($dbh);
};
return ($@) ? 0 : $ok;
}
sub get_info {
my($dbh, $info_type) = @_;
require DBD::Oracle::GetInfo;
my $v = $DBD::Oracle::GetInfo::info{int($info_type)};
$v = $v->($dbh) if ref $v eq 'CODE';
return $v;
}
sub private_attribute_info { #this should only be for ones that have setters and getters
return { ora_max_nested_cursors => undef,
ora_array_chunk_size => undef,
ora_ph_type => undef,
ora_ph_csform => undef,
ora_parse_error_offset => undef,
ora_dbh_share => undef,
ora_envhp => undef,
ora_svchp => undef,
ora_errhp => undef,
ora_init_mode => undef,
ora_charset => undef,
ora_ncharset => undef,
ora_session_mode => undef,
ora_verbose => undef,
ora_oci_success_warn => undef,
ora_objects => undef,
ora_ncs_buff_mtpl => undef,
ora_drcp => undef,
ora_drcp_class => undef,
ora_drcp_min => undef,
ora_drcp_max => undef,
ora_drcp_incr => undef,
ora_oratab_orahome => undef,
ora_module_name => undef,
ora_driver_name => undef,
ora_client_info => undef,
ora_client_identifier => undef,
ora_action => undef,
ora_taf => undef,
ora_taf_function => undef,
ora_taf_sleep => undef,
};
}
sub table_info {
my($dbh, $CatVal, $SchVal, $TblVal, $TypVal) = @_;
# XXX add knowledge of temp tables, etc
# SQL/CLI (ISO/IEC JTC 1/SC 32 N 0595), 6.63 Tables
if (ref $CatVal eq 'HASH') {
($CatVal, $SchVal, $TblVal, $TypVal) =
@$CatVal{'TABLE_CAT','TABLE_SCHEM','TABLE_NAME','TABLE_TYPE'};
}
my @Where = ();
my $SQL;
if ( defined $CatVal && $CatVal eq '%' && (!defined $SchVal || $SchVal eq '') && (!defined $TblVal || $TblVal eq '')) { # Rule 19a
$SQL = <<'SQL';
SELECT NULL TABLE_CAT
, NULL TABLE_SCHEM
, NULL TABLE_NAME
, NULL TABLE_TYPE
, NULL REMARKS
FROM DUAL
SQL
}
elsif ( defined $SchVal && $SchVal eq '%' && (!defined $CatVal || $CatVal eq '') && (!defined $TblVal || $TblVal eq '')) { # Rule 19b
$SQL = <<'SQL';
SELECT NULL TABLE_CAT
, s TABLE_SCHEM
, NULL TABLE_NAME
, NULL TABLE_TYPE
, NULL REMARKS
FROM
(
SELECT USERNAME s FROM ALL_USERS
UNION
SELECT 'PUBLIC' s FROM DUAL
)
ORDER BY TABLE_SCHEM
SQL
}
elsif ( defined $TypVal && $TypVal eq '%' && (!defined $CatVal || $CatVal eq '') && (!defined $SchVal || $SchVal eq '') && (!defined $TblVal || $TblVal eq '')) { # Rule 19c
$SQL = <<'SQL';
SELECT NULL TABLE_CAT
, NULL TABLE_SCHEM
, NULL TABLE_NAME
, t.tt TABLE_TYPE
, NULL REMARKS
FROM
(
SELECT 'TABLE' tt FROM DUAL
UNION
SELECT 'VIEW' tt FROM DUAL
UNION
SELECT 'SYNONYM' tt FROM DUAL
UNION
SELECT 'SEQUENCE' tt FROM DUAL
) t
ORDER BY TABLE_TYPE
SQL
}
else {
$SQL = <<'SQL';
SELECT *
FROM
(
SELECT /*+ RULE*/
NULL TABLE_CAT
, t.OWNER TABLE_SCHEM
, t.TABLE_NAME TABLE_NAME
, decode(t.OWNER
, 'SYS' , 'SYSTEM '
, 'SYSTEM' , 'SYSTEM '
, '' ) || t.TABLE_TYPE TABLE_TYPE
, c.COMMENTS REMARKS
FROM ALL_TAB_COMMENTS c
, ALL_CATALOG t
WHERE c.OWNER (+) = t.OWNER
AND c.TABLE_NAME (+) = t.TABLE_NAME
AND c.TABLE_TYPE (+) = t.TABLE_TYPE
)
SQL
if ( defined $SchVal ) {
push @Where, "TABLE_SCHEM LIKE '$SchVal' ESCAPE '\\'";
}
if ( defined $TblVal ) {
push @Where, "TABLE_NAME LIKE '$TblVal' ESCAPE '\\'";
}
if ( defined $TypVal ) {
my $table_type_list;
$TypVal =~ s/^\s+//;
$TypVal =~ s/\s+$//;
my @ttype_list = split (/\s*,\s*/, $TypVal);
foreach my $table_type (@ttype_list) {
if ($table_type !~ /^'.*'$/) {
$table_type = "'" . $table_type . "'";
}
$table_type_list = join(", ", @ttype_list);
}
push @Where, "TABLE_TYPE IN ($table_type_list)";
}
$SQL .= ' WHERE ' . join("\n AND ", @Where ) . "\n" if @Where;
$SQL .= " ORDER BY TABLE_TYPE, TABLE_SCHEM, TABLE_NAME\n";
}
my $sth = $dbh->prepare($SQL) or return undef;
$sth->execute or return undef;
$sth;
}
sub primary_key_info {
my($dbh, $catalog, $schema, $table) = @_;
if (ref $catalog eq 'HASH') {
($schema, $table) = @$catalog{'TABLE_SCHEM','TABLE_NAME'};
$catalog = undef;
}
my $SQL = <<'SQL';
SELECT *
FROM
(
SELECT /*+ RULE*/
NULL TABLE_CAT
, c.OWNER TABLE_SCHEM
, c.TABLE_NAME TABLE_NAME
, c.COLUMN_NAME COLUMN_NAME
, c.POSITION KEY_SEQ
, c.CONSTRAINT_NAME PK_NAME
FROM ALL_CONSTRAINTS p
, ALL_CONS_COLUMNS c
WHERE p.OWNER = c.OWNER
AND p.TABLE_NAME = c.TABLE_NAME
AND p.CONSTRAINT_NAME = c.CONSTRAINT_NAME
AND p.CONSTRAINT_TYPE = 'P'
)
WHERE TABLE_SCHEM = ?
AND TABLE_NAME = ?
ORDER BY TABLE_SCHEM, TABLE_NAME, KEY_SEQ
SQL
#warn "@_\n$Sql ($schema, $table)";
my $sth = $dbh->prepare($SQL) or return undef;
$sth->execute($schema, $table) or return undef;
$sth;
}
sub foreign_key_info {
my $dbh = shift;
my $attr = ( ref $_[0] eq 'HASH') ? $_[0] : {
'UK_TABLE_SCHEM' => $_[1],'UK_TABLE_NAME ' => $_[2]
,'FK_TABLE_SCHEM' => $_[4],'FK_TABLE_NAME ' => $_[5] };
my $SQL = <<'SQL'; # XXX: DEFERABILITY
SELECT *
FROM
(
SELECT /*+ RULE*/
to_char( NULL ) UK_TABLE_CAT
, uk.OWNER UK_TABLE_SCHEM
, uk.TABLE_NAME UK_TABLE_NAME
, uc.COLUMN_NAME UK_COLUMN_NAME
, to_char( NULL ) FK_TABLE_CAT
, fk.OWNER FK_TABLE_SCHEM
, fk.TABLE_NAME FK_TABLE_NAME
, fc.COLUMN_NAME FK_COLUMN_NAME
, uc.POSITION ORDINAL_POSITION
, 3 UPDATE_RULE
, decode( fk.DELETE_RULE, 'CASCADE', 0, 'RESTRICT', 1, 'SET NULL', 2, 'NO ACTION', 3, 'SET DEFAULT', 4 )
DELETE_RULE
, fk.CONSTRAINT_NAME FK_NAME
, uk.CONSTRAINT_NAME UK_NAME
, to_char( NULL ) DEFERABILITY
, decode( uk.CONSTRAINT_TYPE, 'P', 'PRIMARY', 'U', 'UNIQUE')
UNIQUE_OR_PRIMARY
FROM ALL_CONSTRAINTS uk
, ALL_CONS_COLUMNS uc
, ALL_CONSTRAINTS fk
, ALL_CONS_COLUMNS fc
WHERE uk.OWNER = uc.OWNER
AND uk.CONSTRAINT_NAME = uc.CONSTRAINT_NAME
AND fk.OWNER = fc.OWNER
AND fk.CONSTRAINT_NAME = fc.CONSTRAINT_NAME
AND uk.CONSTRAINT_TYPE IN ('P','U')
AND fk.CONSTRAINT_TYPE = 'R'
AND uk.CONSTRAINT_NAME = fk.R_CONSTRAINT_NAME
AND uk.OWNER = fk.R_OWNER
AND uc.POSITION = fc.POSITION
)
WHERE 1 = 1
SQL
my @BindVals = ();
while ( my ( $k, $v ) = each %$attr ) {
if ( $v ) {
$SQL .= " AND $k = ?\n";
push @BindVals, $v;
}
}
$SQL .= " ORDER BY UK_TABLE_SCHEM, UK_TABLE_NAME, FK_TABLE_SCHEM, FK_TABLE_NAME, ORDINAL_POSITION\n";
my $sth = $dbh->prepare( $SQL ) or return undef;
$sth->execute( @BindVals ) or return undef;
$sth;
}
sub column_info {
my $dbh = shift;
my $attr = ( ref $_[0] eq 'HASH') ? $_[0] : {
'TABLE_SCHEM' => $_[1],'TABLE_NAME' => $_[2],'COLUMN_NAME' => $_[3] };
my($typecase,$typecaseend) = ('','');
if (ora_server_version($dbh)->[0] >= 8) {
$typecase = <<'SQL';
CASE WHEN tc.DATA_TYPE LIKE 'TIMESTAMP% WITH% TIME ZONE' THEN 95
WHEN tc.DATA_TYPE LIKE 'TIMESTAMP%' THEN 93
WHEN tc.DATA_TYPE LIKE 'INTERVAL DAY% TO SECOND%' THEN 110
WHEN tc.DATA_TYPE LIKE 'INTERVAL YEAR% TO MONTH' THEN 107
ELSE
SQL
$typecaseend = 'END';
}
my $SQL = <<"SQL";
SELECT *
FROM
(
SELECT /*+ RULE*/
to_char( NULL ) TABLE_CAT
, tc.OWNER TABLE_SCHEM
, tc.TABLE_NAME TABLE_NAME
, tc.COLUMN_NAME COLUMN_NAME
, $typecase decode( tc.DATA_TYPE
, 'MLSLABEL' , -9106
, 'ROWID' , -9104
, 'UROWID' , -9104
, 'BFILE' , -4 -- 31?
, 'LONG RAW' , -4
, 'RAW' , -3
, 'LONG' , -1
, 'UNDEFINED', 0
, 'CHAR' , 1
, 'NCHAR' , 1
, 'NUMBER' , decode( tc.DATA_SCALE, NULL, 8, 3 )
, 'FLOAT' , 8
, 'VARCHAR2' , 12
, 'NVARCHAR2', 12
, 'BLOB' , 30
, 'CLOB' , 40
, 'NCLOB' , 40
, 'DATE' , 93
, NULL
) $typecaseend DATA_TYPE -- ...
, tc.DATA_TYPE TYPE_NAME -- std.?
, decode( tc.DATA_TYPE
, 'LONG RAW' , 2147483647
, 'LONG' , 2147483647
, 'CLOB' , 2147483647
, 'NCLOB' , 2147483647
, 'BLOB' , 2147483647
, 'BFILE' , 2147483647
, 'NUMBER' , decode( tc.DATA_SCALE
, NULL, 126
, nvl( tc.DATA_PRECISION, 38 )
)
, 'FLOAT' , tc.DATA_PRECISION
, 'DATE' , 19
, 'VARCHAR2' , tc.CHAR_LENGTH
, tc.DATA_LENGTH
) COLUMN_SIZE
, decode( tc.DATA_TYPE
, 'LONG RAW' , 2147483647
, 'LONG' , 2147483647
, 'CLOB' , 2147483647
, 'NCLOB' , 2147483647
, 'BLOB' , 2147483647
, 'BFILE' , 2147483647
, 'NUMBER' , nvl( tc.DATA_PRECISION, 38 ) + 2
, 'FLOAT' , 8 -- ?
, 'DATE' , 16
, tc.DATA_LENGTH
) BUFFER_LENGTH
, decode( tc.DATA_TYPE
, 'DATE' , 0
, tc.DATA_SCALE
) DECIMAL_DIGITS -- ...
, decode( tc.DATA_TYPE
, 'FLOAT' , 2
, 'NUMBER' , decode( tc.DATA_SCALE, NULL, 2, 10 )
, NULL
) NUM_PREC_RADIX
, decode( tc.NULLABLE
, 'Y' , 1
, 'N' , 0
, NULL
) NULLABLE
, cc.COMMENTS REMARKS
, tc.DATA_DEFAULT COLUMN_DEF -- Column is LONG!
, decode( tc.DATA_TYPE
, 'MLSLABEL' , -9106
, 'ROWID' , -9104
, 'UROWID' , -9104
, 'BFILE' , -4 -- 31?
, 'LONG RAW' , -4
, 'RAW' , -3
, 'LONG' , -1
, 'UNDEFINED', 0
, 'CHAR' , 1
, 'NCHAR' , 1
, 'NUMBER' , decode( tc.DATA_SCALE, NULL, 8, 3 )
, 'FLOAT' , 8
, 'VARCHAR2' , 12
, 'NVARCHAR2', 12
, 'BLOB' , 30
, 'CLOB' , 40
, 'NCLOB' , 40
, 'DATE' , 9 -- not 93!
, NULL
) SQL_DATA_TYPE -- ...
, decode( tc.DATA_TYPE
, 'DATE' , 3
, NULL
) SQL_DATETIME_SUB -- ...
, to_number( NULL ) CHAR_OCTET_LENGTH -- TODO
, tc.COLUMN_ID ORDINAL_POSITION
, decode( tc.NULLABLE
, 'Y' , 'YES'
, 'N' , 'NO'
, NULL
) IS_NULLABLE
FROM ALL_TAB_COLUMNS tc
, ALL_COL_COMMENTS cc
WHERE tc.OWNER = cc.OWNER
AND tc.TABLE_NAME = cc.TABLE_NAME
AND tc.COLUMN_NAME = cc.COLUMN_NAME
)
WHERE 1 = 1
SQL
my @BindVals = ();
while ( my ( $k, $v ) = each %$attr ) {
if ( $v ) {
$SQL .= " AND $k LIKE ? ESCAPE '\\'\n";
push @BindVals, $v;
}
}
$SQL .= " ORDER BY TABLE_SCHEM, TABLE_NAME, ORDINAL_POSITION\n";
my $sth = $dbh->prepare( $SQL ) or return undef;
$sth->execute( @BindVals ) or return undef;
$sth;
}
sub type_info_all {
my ($dbh) = @_;
my $version = ( ora_server_version($dbh)->[0] < DBD::Oracle::ORA_OCI() )
? ora_server_version($dbh)->[0] : DBD::Oracle::ORA_OCI();
my $vc2len = ( $version < 8 ) ? "2000" : "4000";
my $type_info_all = [
{
TYPE_NAME => 0,
DATA_TYPE => 1,
COLUMN_SIZE => 2,
LITERAL_PREFIX => 3,
LITERAL_SUFFIX => 4,
CREATE_PARAMS => 5,
NULLABLE => 6,
CASE_SENSITIVE => 7,
SEARCHABLE => 8,
UNSIGNED_ATTRIBUTE => 9,
FIXED_PREC_SCALE => 10,
AUTO_UNIQUE_VALUE => 11,
LOCAL_TYPE_NAME => 12,
MINIMUM_SCALE => 13,
MAXIMUM_SCALE => 14,
SQL_DATA_TYPE => 15,
SQL_DATETIME_SUB => 16,
NUM_PREC_RADIX => 17,
INTERVAL_PRECISION => 18,
},
[ "LONG RAW", SQL_LONGVARBINARY, 2147483647,"'", "'",
undef, 1,0,0,undef,0,undef,
"LONG RAW", undef,undef,SQL_LONGVARBINARY,undef,undef,undef, ],
[ "RAW", SQL_VARBINARY, 2000, "'", "'",
"max length", 1,0,3,undef,0,undef,
"RAW", undef,undef,SQL_VARBINARY, undef,undef,undef, ],
[ "LONG", SQL_LONGVARCHAR, 2147483647,"'", "'",
undef, 1,1,0,undef,0,undef,
"LONG", undef,undef,SQL_LONGVARCHAR, undef,undef,undef, ],
[ "CHAR", SQL_CHAR, 2000, "'", "'",
"max length", 1,1,3,undef,0,0,
"CHAR", undef,undef,SQL_CHAR, undef,undef,undef, ],
[ "DECIMAL", SQL_DECIMAL, 38, undef,undef,
"precision,scale",1,0,3,0, 0,0,
"DECIMAL", 0, 38, SQL_DECIMAL, undef,10, undef, ],
[ "DOUBLE PRECISION",SQL_DOUBLE, 15, undef,undef,
undef, 1,0,3,0, 0,0,
"DOUBLE PRECISION",undef,undef,SQL_DOUBLE, undef,10, undef, ],
[ "DATE", SQL_TYPE_TIMESTAMP,19, "'", "'",
undef, 1,0,3,undef,0,0,
"DATE", 0, 0, SQL_DATE, 3, undef,undef, ],
[ "VARCHAR2", SQL_VARCHAR, $vc2len, "'", "'",
"max length", 1,1,3,undef,0,0,
"VARCHAR2", undef,undef,SQL_VARCHAR, undef,undef,undef, ],
[ "BLOB", SQL_BLOB, 2147483647,"'", "'",
undef, 1,1,0,undef,0,undef,
"BLOB", undef,undef,SQL_LONGVARBINARY,undef,undef,undef, ],
[ "BFILE", -9114, 2147483647,"'", "'",
undef, 1,1,0,undef,0,undef,
"BFILE", undef,undef,SQL_LONGVARBINARY,undef,undef,undef, ],
[ "CLOB", SQL_CLOB, 2147483647,"'", "'",
undef, 1,1,0,undef,0,undef,
"CLOB", undef,undef,SQL_LONGVARCHAR, undef,undef,undef, ],
["TIMESTAMP WITH TIME ZONE", # type name
SQL_TYPE_TIMESTAMP_WITH_TIMEZONE, # data type
40, # column size
"TIMESTAMP'", # literal prefix
"'", # literal suffix
"precision", # create params
1, # nullable
0, # case sensitive
3, # searchable
undef, # unsigned attribute
0, # fixed prec scale
0, # auto unique value
undef, # local type name
0, # minimum scale
6, # maximum scale
SQL_TIMESTAMP, # sql data type
5, # sql datetime sub
undef, # num prec radix
undef, # interval precision
],
[ "INTERVAL DAY TO SECOND", # type name
SQL_INTERVAL_DAY_TO_SECOND, # data type
22, # column size '+00 11:12:10.222222200'
"INTERVAL'", # literal prefix
"'", # literal suffix
"precision", # create params
1, # nullable
0, # case sensitive
3, # searchable
undef, # unsigned attribute
0, # fixed prec scale
0, # auto unique value
undef, # local type name
0, # minimum scale
9, # maximum scale
SQL_INTERVAL, # sql data type
10, # sql datetime sub
undef, # num prec radix
undef, # interval precision
],
[ "INTERVAL YEAR TO MONTH", # type name
SQL_INTERVAL_YEAR_TO_MONTH, # data type
13, # column size '+012345678-01'
"INTERVAL'", # literal prefix
"'", # literal suffix
"precision", # create params
1, # nullable
0, # case sensitive
3, # searchable
undef, # unsigned attribute
0, # fixed prec scale
0, # auto unique value
undef, # local type name
0, # minimum scale
9, # maximum scale
SQL_INTERVAL, # sql data type
7, # sql datetime sub
undef, # num prec radix
undef, # interval precision
]
];
return $type_info_all;
}
sub plsql_errstr {
# original version thanks to Bob Menteer
my $sth = shift->prepare_cached(q{
SELECT name, type, line, position, text
FROM user_errors ORDER BY name, type, sequence
}) or return undef;
$sth->execute or return undef;
my ( @msg, $oname, $otype, $name, $type, $line, $pos, $text );
$oname = $otype = 0;
while ( ( $name, $type, $line, $pos, $text ) = $sth->fetchrow_array ) {
if ( $oname ne $name || $otype ne $type ) {
push @msg, "Errors for $type $name:";
$oname = $name;
$otype = $type;
}
push @msg, "$line.$pos: $text";
}
return join( "\n", @msg );
}
#
# note, dbms_output must be enabled prior to usage
#
sub dbms_output_enable {
my ($dbh, $buffersize) = @_;
$buffersize ||= 20000; # use oracle 7.x default
$dbh->do("begin dbms_output.enable(:1); end;", undef, $buffersize);
}
sub dbms_output_get {
my $dbh = shift;
my $sth = $dbh->prepare_cached("begin dbms_output.get_line(:l, :s); end;")
or return;
my ($line, $status, @lines);
my $version = join ".", @{ ora_server_version($dbh) }[0..1];
my $len = 32767;
if ($version < 10.2){
$len = 400;
}
# line can be greater that 255 (e.g. 7 byte date is expanded on output)
$sth->bind_param_inout(':l', \$line, $len, { ora_type => 1 });
$sth->bind_param_inout(':s', \$status, 20, { ora_type => 1 });
if (!wantarray) {
$sth->execute or return undef;
return $line if $status eq '0';
return undef;
}
push @lines, $line while($sth->execute && $status eq '0');
return @lines;
}
sub dbms_output_put {
my $dbh = shift;
my $sth = $dbh->prepare_cached("begin dbms_output.put_line(:1); end;")
or return;
my $line;
foreach $line (@_) {
$sth->execute($line) or return;
}
return 1;
}
sub dbms_msgpipe_get {
my $dbh = shift;
my $sth = $dbh->prepare_cached(q{
begin dbms_msgpipe.get_request(:returnpipe, :proc, :param); end;
}) or return;
my $msg = ['','',''];
$sth->bind_param_inout(":returnpipe", \$msg->[0], 30);
$sth->bind_param_inout(":proc", \$msg->[1], 30);
$sth->bind_param_inout(":param", \$msg->[2], 4000);
$sth->execute or return undef;
return $msg;
}
sub dbms_msgpipe_ack {
my $dbh = shift;
my $msg = shift;
my $sth = $dbh->prepare_cached(q{
begin dbms_msgpipe.acknowledge(:returnpipe, :errormsg, :param); end;
}) or return;
$sth->bind_param_inout(":returnpipe", \$msg->[0], 30);
$sth->bind_param_inout(":proc", \$msg->[1], 30);
$sth->bind_param_inout(":param", \$msg->[2], 4000);
$sth->execute or return undef;
return 1;
}
sub ora_server_version {
my $dbh = shift;
return $dbh->{ora_server_version} if defined $dbh->{ora_server_version};
$dbh->{ora_server_version} =
[ split /\./, $dbh->selectrow_array(<<'SQL', undef, 'Oracle%', 'Personal Oracle%') .''];
SELECT version
FROM product_component_version
WHERE product LIKE ? or product LIKE ?
SQL
}
sub ora_nls_parameters {
my $dbh = shift;
my $refresh = shift;
if ($refresh || !$dbh->{ora_nls_parameters}) {
my $nls_parameters = $dbh->selectall_arrayref(q{
SELECT parameter, value FROM v$nls_parameters
}) or return;
$dbh->{ora_nls_parameters} = { map { $_->[0] => $_->[1] } @$nls_parameters };
}
# return copy of params to protect against accidental editing
my %nls = %{$dbh->{ora_nls_parameters}};
return \%nls;
}
sub ora_can_unicode {
my $dbh = shift;
my $refresh = shift;
# 0 = No Unicode support.
# 1 = National character set is Unicode-based.
# 2 = Database character set is Unicode-based.
# 3 = Both character sets are Unicode-based.
return $dbh->{ora_can_unicode}
if defined $dbh->{ora_can_unicode} && !$refresh;
my $nls = $dbh->ora_nls_parameters($refresh);
$dbh->{ora_can_unicode} = 0;
$dbh->{ora_can_unicode} += 1 if $nls->{NLS_NCHAR_CHARACTERSET} =~ /UTF/;
$dbh->{ora_can_unicode} += 2 if $nls->{NLS_CHARACTERSET} =~ /UTF/;
return $dbh->{ora_can_unicode};
}
} # end of package DBD::Oracle::db