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Oracle.pm
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Oracle.pm
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package SQL::Translator::Producer::Oracle;
=head1 NAME
SQL::Translator::Producer::Oracle - Oracle SQL producer
=head1 SYNOPSIS
use SQL::Translator;
my $t = SQL::Translator->new( parser => '...', producer => 'Oracle' );
print $translator->translate( $file );
=head1 DESCRIPTION
Creates an SQL DDL suitable for Oracle.
=head1 producer_args
=over
=item delay_constraints
This option remove the primary key and other key constraints from the
CREATE TABLE statement and adds ALTER TABLEs at the end with it.
=item quote_field_names
Controls whether quotes are being used around column names in generated DDL.
=item quote_table_names
Controls whether quotes are being used around table, sequence and trigger names in
generated DDL.
=back
=head1 NOTES
=head2 Autoincremental primary keys
This producer uses sequences and triggers to autoincrement primary key
columns, if necessary. SQLPlus and DBI expect a slightly different syntax
of CREATE TRIGGER statement. You might have noticed that this
producer returns a scalar containing all statements concatenated by
newlines or an array of single statements depending on the context
(scalar, array) it has been called in.
SQLPlus expects following trigger syntax:
CREATE OR REPLACE TRIGGER ai_person_id
BEFORE INSERT ON person
FOR EACH ROW WHEN (
new.id IS NULL OR new.id = 0
)
BEGIN
SELECT sq_person_id.nextval
INTO :new.id
FROM dual;
END;
/
Whereas if you want to create the same trigger using L<DBI/do>, you need
to omit the last slash:
my $dbh = DBI->connect('dbi:Oracle:mysid', 'scott', 'tiger');
$dbh->do("
CREATE OR REPLACE TRIGGER ai_person_id
BEFORE INSERT ON person
FOR EACH ROW WHEN (
new.id IS NULL OR new.id = 0
)
BEGIN
SELECT sq_person_id.nextval
INTO :new.id
FROM dual;
END;
");
If you call this producer in array context, we expect you want to process
the returned array of statements using L<DBI> like
L<DBIx::Class::Schema/deploy> does.
To get this working we removed the slash in those statements in version
0.09002 of L<SQL::Translator> when called in array context. In scalar
context the slash will be still there to ensure compatibility with SQLPlus.
=cut
use strict;
use warnings;
our ($DEBUG, $WARN);
our $VERSION = '1.65';
$DEBUG = 0 unless defined $DEBUG;
use base 'SQL::Translator::Producer';
use SQL::Translator::Schema::Constants;
use SQL::Translator::Utils qw(debug header_comment);
use Data::Dumper;
my %translate = (
#
# MySQL types
#
bigint => 'number',
double => 'float',
decimal => 'number',
float => 'float',
int => 'number',
integer => 'number',
mediumint => 'number',
smallint => 'number',
tinyint => 'number',
char => 'char',
varchar => 'varchar2',
tinyblob => 'blob',
blob => 'blob',
mediumblob => 'blob',
longblob => 'blob',
tinytext => 'varchar2',
text => 'clob',
longtext => 'clob',
mediumtext => 'clob',
enum => 'varchar2',
set => 'varchar2',
date => 'date',
datetime => 'date',
time => 'date',
timestamp => 'date',
year => 'date',
#
# PostgreSQL types
#
numeric => 'number',
'double precision' => 'number',
serial => 'number',
bigserial => 'number',
money => 'number',
character => 'char',
'character varying' => 'varchar2',
bytea => 'BLOB',
interval => 'number',
boolean => 'number',
point => 'number',
line => 'number',
lseg => 'number',
box => 'number',
path => 'number',
polygon => 'number',
circle => 'number',
cidr => 'number',
inet => 'varchar2',
macaddr => 'varchar2',
bit => 'number',
'bit varying' => 'number',
#
# Oracle types
#
number => 'number',
varchar2 => 'varchar2',
long => 'clob',
);
#
# Oracle 8/9 max size of data types from:
# http://www.ss64.com/orasyntax/datatypes.html
#
my %max_size = (
char => 2000,
float => 126,
nchar => 2000,
nvarchar2 => 4000,
number => [ 38, 127 ],
raw => 2000,
varchar => 4000, # only synonym for varchar2
varchar2 => 4000,
);
my $max_id_length = 30;
my %used_identifiers = ();
my %global_names;
my %truncated;
# Quote used to escape table, field, sequence and trigger names
my $quote_char = '"';
sub produce {
my $translator = shift;
$DEBUG = $translator->debug;
$WARN = $translator->show_warnings || 0;
my $no_comments = $translator->no_comments;
my $add_drop_table = $translator->add_drop_table;
my $schema = $translator->schema;
my $oracle_version = $translator->producer_args->{oracle_version} || 0;
my $delay_constraints = $translator->producer_args->{delay_constraints};
my ($output, $create, @table_defs, @fk_defs, @trigger_defs, @index_defs, @constraint_defs);
debug("ORA: Beginning production");
$create .= header_comment unless ($no_comments);
my $qt = 1 if $translator->quote_table_names;
my $qf = 1 if $translator->quote_field_names;
if ($translator->parser_type =~ /mysql/i) {
$create
.= "-- We assume that default NLS_DATE_FORMAT has been changed\n"
. "-- but we set it here anyway to be self-consistent.\n"
unless $no_comments;
$create .= "ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';\n\n";
}
for my $table ($schema->get_tables) {
debug("ORA: Producing for table " . $table->name);
my ($table_def, $fk_def, $trigger_def, $index_def, $constraint_def) = create_table(
$table,
{
add_drop_table => $add_drop_table,
show_warnings => $WARN,
no_comments => $no_comments,
delay_constraints => $delay_constraints,
quote_table_names => $qt,
quote_field_names => $qf,
}
);
push @table_defs, @$table_def;
push @fk_defs, @$fk_def;
push @trigger_defs, @$trigger_def;
push @index_defs, @$index_def;
push @constraint_defs, @$constraint_def;
}
my (@view_defs);
foreach my $view ($schema->get_views) {
my ($view_def) = create_view(
$view,
{
add_drop_view => $add_drop_table,
quote_table_names => $qt,
}
);
push @view_defs, @$view_def;
}
if (wantarray) {
return defined $create ? $create : (), @table_defs, @view_defs,
@fk_defs, @trigger_defs, @index_defs, @constraint_defs;
} else {
$create .= join(";\n\n", @table_defs, @view_defs, @fk_defs, @index_defs, @constraint_defs);
$create .= ";\n\n";
# If wantarray is not set we have to add "/" in this statement
# DBI->do() needs them omitted
# triggers may NOT end with a semicolon but a "/" instead
$create .= "$_/\n\n" for @trigger_defs;
return $create;
}
}
sub create_table {
my ($table, $options) = @_;
my $qt = $options->{quote_table_names};
my $qf = $options->{quote_field_names};
my $table_name = $table->name;
my $table_name_q = quote($table_name, $qt);
my $item = '';
my $drop;
my (@create, @field_defs, @constraint_defs, @fk_defs, @trigger_defs);
push @create, "--\n-- Table: $table_name\n--"
unless $options->{no_comments};
push @create, qq[DROP TABLE $table_name_q CASCADE CONSTRAINTS]
if $options->{add_drop_table};
my (%field_name_scope, @field_comments);
for my $field ($table->get_fields) {
debug("ORA: Creating field " . $field->name . "(" . $field->data_type . ")");
my ($field_create, $field_defs, $trigger_defs, $field_comments)
= create_field($field, $options, \%field_name_scope);
push @create, @$field_create if ref $field_create;
push @field_defs, @$field_defs if ref $field_defs;
push @trigger_defs, @$trigger_defs if ref $trigger_defs;
push @field_comments, @$field_comments if ref $field_comments;
}
#
# Table options
#
my @table_options;
for my $opt ($table->options) {
if (ref $opt eq 'HASH') {
my ($key, $value) = each %$opt;
if (ref $value eq 'ARRAY') {
push @table_options,
"$key\n(\n"
. join(
"\n", map {" $_->[0]\t$_->[1]"}
map { [ each %$_ ] } @$value
) . "\n)";
} elsif (!defined $value) {
push @table_options, $key;
} else {
push @table_options, "$key $value";
}
}
}
#
# Table constraints
#
for my $c ($table->get_constraints) {
my $constr = create_constraint($c, $options);
if ($constr) {
if ($c->type eq FOREIGN_KEY) { # FK defs always come later as alters
push @fk_defs, sprintf("ALTER TABLE %s ADD %s", $table_name_q, $constr);
} else {
push @constraint_defs, $constr;
}
}
}
#
# Index Declarations
#
my @index_defs = ();
for my $index ($table->get_indices) {
my $index_name = $index->name || '';
my $index_type = $index->type || NORMAL;
my @fields = map { quote($_, $qf) } $index->fields;
next unless @fields;
debug("ORA: Creating $index_type index on fields (" . join(', ', @fields) . ") named $index_name");
my @index_options;
for my $opt ($index->options) {
if (ref $opt eq 'HASH') {
my ($key, $value) = each %$opt;
if (ref $value eq 'ARRAY') {
push @table_options,
"$key\n(\n"
. join(
"\n", map {" $_->[0]\t$_->[1]"}
map { [ each %$_ ] } @$value
) . "\n)";
} elsif (!defined $value) {
push @index_options, $key;
} else {
push @index_options, "$key $value";
}
}
}
my $index_options = @index_options ? "\n" . join("\n", @index_options) : '';
if ($index_type eq PRIMARY_KEY) {
$index_name
= $index_name
? mk_name($index_name)
: mk_name($table_name, 'pk');
$index_name = quote($index_name, $qf);
push @field_defs, 'CONSTRAINT ' . $index_name . ' PRIMARY KEY ' . '(' . join(', ', @fields) . ')';
} elsif ($index_type eq NORMAL or $index_type eq UNIQUE) {
push @index_defs, create_index($index, $options, $index_options);
} else {
warn "Unknown index type ($index_type) on table $table_name.\n"
if $WARN;
}
}
if (my @table_comments = $table->comments) {
for my $comment (@table_comments) {
next unless $comment;
$comment = __PACKAGE__->_quote_string($comment);
push @field_comments, "COMMENT ON TABLE $table_name_q is\n $comment"
unless $options->{no_comments};
}
}
my $table_options = @table_options ? "\n" . join("\n", @table_options) : '';
push @create,
"CREATE TABLE $table_name_q (\n"
. join(",\n", map {" $_"} @field_defs, ($options->{delay_constraints} ? () : @constraint_defs))
. "\n)$table_options";
@constraint_defs = map {"ALTER TABLE $table_name_q ADD $_"} @constraint_defs;
if ($WARN) {
if (%truncated) {
warn "Truncated " . keys(%truncated) . " names:\n";
warn "\t" . join("\n\t", sort keys %truncated) . "\n";
}
}
return \@create, \@fk_defs, \@trigger_defs, \@index_defs, ($options->{delay_constraints} ? \@constraint_defs : []);
}
sub alter_field {
my ($from_field, $to_field, $options) = @_;
my $qt = $options->{quote_table_names};
my ($field_create, $field_defs, $trigger_defs, $field_comments)
= create_field($to_field, $options, {});
# Fix ORA-01442
if (!$from_field->is_nullable && $to_field->is_nullable) {
if ($from_field->data_type =~ /text/) {
die 'Cannot alter CLOB field in this way';
} else {
@$field_defs = map { $_ .= ' NULL' } @$field_defs;
}
} elsif (!$from_field->is_nullable && !$to_field->is_nullable) {
@$field_defs = map { s/ NOT NULL//; $_ } @$field_defs;
}
my $table_name = quote($to_field->table->name, $qt);
return 'ALTER TABLE ' . $table_name . ' MODIFY ( ' . join('', @$field_defs) . ' )';
}
sub drop_field {
my ($old_field, $options) = @_;
my $qi = $options->{quote_identifiers};
my $table_name = quote($old_field->table->name, $qi);
my $out = sprintf('ALTER TABLE %s DROP COLUMN %s', $table_name, quote($old_field->name, $qi));
return $out;
}
sub add_field {
my ($new_field, $options) = @_;
my $qt = $options->{quote_table_names};
my ($field_create, $field_defs, $trigger_defs, $field_comments)
= create_field($new_field, $options, {});
my $table_name = quote($new_field->table->name, $qt);
my $out = sprintf('ALTER TABLE %s ADD ( %s )', $table_name, join('', @$field_defs));
return $out;
}
sub create_field {
my ($field, $options, $field_name_scope) = @_;
my $qf = $options->{quote_field_names};
my $qt = $options->{quote_table_names};
my (@create, @field_defs, @trigger_defs, @field_comments);
my $table_name = $field->table->name;
my $table_name_q = quote($table_name, $qt);
#
# Field name
#
my $field_name = mk_name($field->name, '', $field_name_scope, 1);
my $field_name_q = quote($field_name, $qf);
my $field_def = quote($field_name, $qf);
$field->name($field_name);
#
# Datatype
#
my $check;
my $data_type = lc $field->data_type;
my @size = $field->size;
my %extra = $field->extra;
my $list = $extra{'list'} || [];
my $commalist = join(', ', map { __PACKAGE__->_quote_string($_) } @$list);
if ($data_type eq 'enum') {
$check = "CHECK ($field_name_q IN ($commalist))";
$data_type = 'varchar2';
} elsif ($data_type eq 'set') {
# XXX add a CHECK constraint maybe
# (trickier and slower, than enum :)
$data_type = 'varchar2';
} else {
if (defined $translate{$data_type}) {
if (ref $translate{$data_type} eq "ARRAY") {
($data_type, $size[0]) = @{ $translate{$data_type} };
} else {
$data_type = $translate{$data_type};
}
}
$data_type ||= 'varchar2';
}
# ensure size is not bigger than max size oracle allows for data type
if (defined $max_size{$data_type}) {
for (my $i = 0; $i < scalar @size; $i++) {
my $max
= ref($max_size{$data_type}) eq 'ARRAY'
? $max_size{$data_type}->[$i]
: $max_size{$data_type};
$size[$i] = $max if $size[$i] > $max;
}
}
#
# Fixes ORA-02329: column of datatype LOB cannot be
# unique or a primary key
#
if ($data_type eq 'clob' && $field->is_primary_key) {
$data_type = 'varchar2';
$size[0] = 4000;
warn "CLOB cannot be a primary key, changing to VARCHAR2\n"
if $WARN;
}
if ($data_type eq 'clob' && $field->is_unique) {
$data_type = 'varchar2';
$size[0] = 4000;
warn "CLOB cannot be a unique key, changing to VARCHAR2\n"
if $WARN;
}
#
# Fixes ORA-00907: missing right parenthesis
#
if ($data_type =~ /(date|clob)/i) {
undef @size;
}
#
# Fixes ORA-00906: missing right parenthesis
# if size is 0 or undefined
#
for (qw/varchar2/) {
if ($data_type =~ /^($_)$/i) {
$size[0] ||= $max_size{$_};
}
}
$field_def .= " $data_type";
if (defined $size[0] && $size[0] > 0) {
$field_def .= '(' . join(',', @size) . ')';
}
#
# Default value
#
my $default = $field->default_value;
if (defined $default) {
debug("ORA: Handling default value: $default");
#
# Wherein we try to catch a string being used as
# a default value for a numerical field. If "true/false,"
# then sub "1/0," otherwise just test the truthity of the
# argument and use that (naive?).
#
if (ref $default and defined $$default) {
$default = $$default;
} elsif (ref $default) {
$default = 'NULL';
} elsif ($data_type =~ /^number$/i
&& $default !~ /^-?\d+$/
&& $default !~ m/null/i) {
if ($default =~ /^true$/i) {
$default = "'1'";
} elsif ($default =~ /^false$/i) {
$default = "'0'";
} else {
$default = $default ? "'1'" : "'0'";
}
} elsif (
$data_type =~ /date/
&& ( $default eq 'current_timestamp'
|| $default eq 'now()')
) {
$default = 'SYSDATE';
} else {
$default
= $default =~ m/null/i
? 'NULL'
: __PACKAGE__->_quote_string($default);
}
$field_def .= " DEFAULT $default",;
}
#
# Not null constraint
#
unless ($field->is_nullable) {
debug("ORA: Field is NOT NULL");
$field_def .= ' NOT NULL';
}
$field_def .= " $check" if $check;
#
# Auto_increment
#
if ($field->is_auto_increment) {
debug("ORA: Handling auto increment");
my $base_name = $table_name . "_" . $field_name;
my $seq_name = quote(mk_name($base_name, 'sq'), $qt);
my $trigger_name = quote(mk_name($base_name, 'ai'), $qt);
push @create, qq[DROP SEQUENCE $seq_name] if $options->{add_drop_table};
push @create, "CREATE SEQUENCE $seq_name";
my $trigger
= "CREATE OR REPLACE TRIGGER $trigger_name\n"
. "BEFORE INSERT ON $table_name_q\n"
. "FOR EACH ROW WHEN (\n"
. " new.$field_name_q IS NULL"
. " OR new.$field_name_q = 0\n" . ")\n"
. "BEGIN\n"
. " SELECT $seq_name.nextval\n"
. " INTO :new."
. $field_name_q . "\n"
. " FROM dual;\n"
. "END;\n";
push @trigger_defs, $trigger;
}
push @field_defs, $field_def;
if (my $comment = $field->comments) {
debug("ORA: Handling comment");
$comment =~ __PACKAGE__->_quote_string($comment);
push @field_comments, "COMMENT ON COLUMN $table_name_q.$field_name_q is\n $comment;"
unless $options->{no_comments};
}
return \@create, \@field_defs, \@trigger_defs, \@field_comments;
}
sub drop_table {
my ($table, $options) = @_;
my $qi = $options->{quote_identifiers};
my @foreign_key_constraints = grep { $_->type eq 'FOREIGN KEY' } $table->get_constraints;
my @statements;
for my $constraint (@foreign_key_constraints) {
push @statements, alter_drop_constraint($constraint, $options);
}
return @statements, 'DROP TABLE ' . quote($table, $qi);
}
sub alter_create_index {
my ($index, $options) = @_;
return create_index($index, $options);
}
sub create_index {
my ($index, $options, $index_options) = @_;
$index_options = $index_options || '';
my $qf = $options->{quote_field_names} || $options->{quote_identifiers};
my $qt = $options->{quote_table_names} || $options->{quote_identifiers};
my $index_name = $index->name || '';
$index_name
= $index_name
? mk_name($index_name)
: mk_name($index->table, $index_name || 'i');
return join(' ',
map { $_ || () } 'CREATE',
lc $index->type eq 'normal' ? 'INDEX' : $index->type . ' INDEX',
$index_name ? quote($index_name, $qf) : '',
'ON',
quote($index->table, $qt),
'(' . join(', ', map { quote($_, $qf) } $index->fields) . ")$index_options");
}
sub alter_drop_index {
my ($index, $options) = @_;
return 'DROP INDEX ' . $index->name;
}
sub alter_drop_constraint {
my ($c, $options) = @_;
my $qi = $options->{quote_identifiers};
my $table_name = quote($c->table->name, $qi);
my @out = ('ALTER', 'TABLE', $table_name, 'DROP',);
if ($c->name) {
push @out, ('CONSTRAINT', quote($c->name, $qi));
} elsif ($c->type eq PRIMARY_KEY) {
push @out, 'PRIMARY KEY';
}
return join(' ', @out);
}
sub alter_create_constraint {
my ($c, $options) = @_;
my $qi = $options->{quote_identifiers};
my $table_name = quote($c->table->name, $qi);
return join(' ', 'ALTER TABLE', $table_name, 'ADD', create_constraint($c, $options));
}
sub create_constraint {
my ($c, $options) = @_;
my $qt = $options->{quote_table_names};
my $qf = $options->{quote_field_names};
my $table = $c->table;
my $table_name = $table->name;
my $table_name_q = quote($table_name, $qt);
my $name = $c->name || '';
my @fields = map { quote($_, $qf) } $c->fields;
my @rfields = map { quote($_, $qf) } $c->reference_fields;
return undef if !@fields && $c->type ne 'CHECK';
my $definition;
if ($c->type eq PRIMARY_KEY) {
debug("ORA: Creating PK constraint on fields (" . join(', ', @fields) . ")");
# create a name if delay_constraints
$name ||= mk_name($table_name, 'pk')
if $options->{delay_constraints};
$name = quote($name, $qf);
$definition = ($name ? "CONSTRAINT $name " : '') . 'PRIMARY KEY (' . join(', ', @fields) . ')';
} elsif ($c->type eq UNIQUE) {
# Don't create UNIQUE constraints identical to the primary key
if (my $pk = $table->primary_key) {
my $u_fields = join(":", @fields);
my $pk_fields = join(":", $pk->fields);
next if $u_fields eq $pk_fields;
}
if ($name) {
# Force prepend of table_name as ORACLE doesn't allow duplicate
# CONSTRAINT names even for different tables (ORA-02264)
$name = mk_name("${table_name}_$name", 'u')
unless $name =~ /^$table_name/;
} else {
$name = mk_name($table_name, 'u');
}
debug("ORA: Creating UNIQUE constraint on fields (" . join(', ', @fields) . ") named $name");
$name = quote($name, $qf);
for my $f ($c->fields) {
my $field_def = $table->get_field($f) or next;
my $dtype = $translate{
ref $field_def->data_type eq "ARRAY"
? $field_def->data_type->[0]
: $field_def->data_type
}
or next;
if ($WARN && $dtype =~ /clob/i) {
warn "Oracle will not allow UNIQUE constraints on "
. "CLOB field '"
. $field_def->table->name . '.'
. $field_def->name . ".'\n";
}
}
$definition = "CONSTRAINT $name UNIQUE " . '(' . join(', ', @fields) . ')';
} elsif ($c->type eq CHECK_C) {
$name ||= mk_name($name || $table_name, 'ck');
$name = quote($name, $qf);
my $expression = $c->expression || '';
debug("ORA: Creating CHECK constraint on fields (" . join(', ', @fields) . ") named $name");
$definition = "CONSTRAINT $name CHECK ($expression)";
} elsif ($c->type eq FOREIGN_KEY) {
$name = mk_name(join('_', $table_name, $c->fields) . '_fk');
$name = quote($name, $qf);
my $on_delete = uc($c->on_delete || '');
$definition = "CONSTRAINT $name FOREIGN KEY ";
if (@fields) {
$definition .= '(' . join(', ', @fields) . ')';
}
my $ref_table = quote($c->reference_table, $qt);
debug("ORA: Creating FK constraint on fields (" . join(', ', @fields) . ") named $name referencing $ref_table");
$definition .= " REFERENCES $ref_table";
if (@rfields) {
$definition .= ' (' . join(', ', @rfields) . ')';
}
if ($c->match_type) {
$definition .= ' MATCH ' . ($c->match_type =~ /full/i) ? 'FULL' : 'PARTIAL';
}
if ($on_delete && $on_delete ne "RESTRICT") {
$definition .= ' ON DELETE ' . $c->on_delete;
}
}
return $definition ? $definition : undef;
}
sub create_view {
my ($view, $options) = @_;
my $qt = $options->{quote_table_names};
my $view_name = quote($view->name, $qt);
my $extra = $view->extra;
my $view_type = 'VIEW';
my $view_options = '';
if (my $materialized = $extra->{materialized}) {
$view_type = 'MATERIALIZED VIEW';
$view_options .= ' ' . $materialized;
}
my @create;
push @create, qq[DROP $view_type $view_name]
if $options->{add_drop_view};
push @create, sprintf("CREATE %s %s%s AS\n%s", $view_type, $view_name, $view_options, $view->sql);
return \@create;
}
sub mk_name {
my $basename = shift || '';
my $type = shift || '';
$type = '' if $type =~ /^\d/;
my $scope = shift || '';
my $critical = shift || '';
my $basename_orig = $basename;
my $max_name
= $type
? $max_id_length - (length($type) + 1)
: $max_id_length;
$basename = substr($basename, 0, $max_name)
if length($basename) > $max_name;
my $name = $type ? "${type}_$basename" : $basename;
if ($basename ne $basename_orig and $critical) {
my $show_type = $type ? "+'$type'" : "";
warn "Truncating '$basename_orig'$show_type to $max_id_length ", "character limit to make '$name'\n"
if $WARN;
$truncated{$basename_orig} = $name;
}
$scope ||= \%global_names;
if (my $prev = $scope->{$name}) {
my $name_orig = $name;
substr($name, $max_id_length - 2) = ""
if length($name) >= $max_id_length - 1;
$name .= sprintf("%02d", $prev++);
warn "The name '$name_orig' has been changed to ", "'$name' to make it unique.\n"
if $WARN;
$scope->{$name_orig}++;
}
$scope->{$name}++;
return $name;
}
1;
sub quote {
my ($name, $q) = @_;
return $name unless $q && $name;
$name =~ s/\Q$quote_char/$quote_char$quote_char/g;
return "$quote_char$name$quote_char";
}
# -------------------------------------------------------------------
# All bad art is the result of good intentions.
# Oscar Wilde
# -------------------------------------------------------------------
=pod
=head1 CREDITS
Mad props to Tim Bunce for much of the logic stolen from his "mysql2ora"
script.
=head1 AUTHORS
Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>,
Alexander Hartmaier E<lt>abraxxa@cpan.orgE<gt>,
Fabien Wernli E<lt>faxmodem@cpan.orgE<gt>.
=head1 SEE ALSO
SQL::Translator, DDL::Oracle, mysql2ora.
=cut