package SQL::Translator::Producer::Oracle;
# -------------------------------------------------------------------
-# $Id: Oracle.pm,v 1.34 2005-08-10 16:33:39 duality72 Exp $
-# -------------------------------------------------------------------
-# Copyright (C) 2002-4 SQLFairy Authors
+# Copyright (C) 2002-2009 SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
=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 vars qw[ $VERSION $DEBUG $WARN ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.34 $ =~ /(\d+)\.(\d+)/;
+$VERSION = '1.60';
$DEBUG = 0 unless defined $DEBUG;
use SQL::Translator::Schema::Constants;
WHENEVER WHERE WITH
);
+#
+# Oracle 8/9 max size of data types from:
+# http://www.ss64.com/orasyntax/datatypes.html
+#
+my %max_size = (
+ char => 2000,
+ 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;
}
for my $table ( $schema->get_tables ) {
- my ( $table_def, $fk_def, $trigger_def, $index_def, $constraint_def) = create_table(
+ 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
+ add_drop_table => $add_drop_table,
+ show_warnings => $WARN,
+ no_comments => $no_comments,
+ delay_constraints => $delay_constraints,
+ wantarray => wantarray ? 1 : 0,
}
);
push @table_defs, @$table_def;
push @view_defs, create_view($view);
}
- return wantarray ? (defined $create ? $create : (), @table_defs, @view_defs, @fk_defs, @trigger_defs, @index_defs, @constraint_defs) : $create . join ("\n\n", @table_defs, @view_defs, @fk_defs, @trigger_defs, @index_defs, @constraint_defs, '');
+ if (wantarray) {
+ return defined $create ? $create : (), @table_defs, @view_defs, @fk_defs, @trigger_defs, @index_defs, @constraint_defs;
+ }
+ else {
+ $create .= join ('', map { $_ ? "$_;\n\n" : () } @table_defs, @view_defs, @fk_defs, @index_defs, @constraint_defs);
+ # triggers may NOT end with a semicolon
+ $create .= join "\n\n", @trigger_defs;
+ return $create;
+ }
}
sub create_table {
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 CASCADE CONSTRAINTS;] if $options->{add_drop_table};
-
my $table_name_ur = unreserve($table_name) or next;
+ push @create, "--\n-- Table: $table_name_ur\n--" unless $options->{no_comments};
+ push @create, qq[DROP TABLE $table_name_ur CASCADE CONSTRAINTS] if $options->{add_drop_table};
+
my ( %field_name_scope, @field_comments );
for my $field ( $table->get_fields ) {
my ($field_create, $field_defs, $trigger_defs, $field_comments) =
push @constraint_defs, "CONSTRAINT $name CHECK ($expression)";
}
elsif ( $c->type eq FOREIGN_KEY ) {
- $name = mk_name( join('_', $table_name, $c->fields). '_fk' );
+ $name = mk_name( join('_', $table_name, $c->fields). '_fk' );
my $def = "CONSTRAINT $name FOREIGN KEY ";
if ( @fields ) {
$def .= ' ON DELETE '.join( ' ', $c->on_delete );
}
- # disabled by plu 2007-12-29 - doesn't exist for oracle
- #if ( $c->on_update ) {
- # $def .= ' ON UPDATE '.join( ' ', $c->on_update );
- #}
+ # disabled by plu 2007-12-29 - doesn't exist for oracle
+ #if ( $c->on_update ) {
+ # $def .= ' ON UPDATE '.join( ' ', $c->on_update );
+ #}
- push @fk_defs, sprintf("ALTER TABLE %s ADD %s;", $table, $def);
+ push @fk_defs, sprintf("ALTER TABLE %s ADD %s", $table_name_ur, $def);
}
}
push @index_defs,
"CREATE INDEX $index_name on $table_name_ur (".
join( ', ', @fields ).
- ")$index_options;";
+ ")$index_options";
}
elsif ( $index_type eq UNIQUE ) {
$index_name = $index_name ? mk_name( $index_name )
push @index_defs,
"CREATE UNIQUE INDEX $index_name on $table_name_ur (".
join( ', ', @fields ).
- ")$index_options;";
+ ")$index_options";
}
else {
warn "Unknown index type ($index_type) on table $table_name.\n"
next unless $comment;
$comment =~ s/'/''/g;
push @field_comments, "COMMENT ON TABLE $table_name_ur is\n '".
- $comment . "';" unless $options->{no_comments}
+ $comment . "'" unless $options->{no_comments}
;
}
}
push @create, "CREATE TABLE $table_name_ur (\n" .
join( ",\n", map { " $_" } @field_defs,
($options->{delay_constraints} ? () : @constraint_defs) ) .
- "\n)$table_options;";
+ "\n)$table_options";
@constraint_defs = map { 'ALTER TABLE '.$table_name_ur.' ADD '.$_ }
@constraint_defs;
my ($field_create, $field_defs, $trigger_defs, $field_comments) =
create_field($to_field, $options, {});
+ # Fix ORA-01442
+ if ($to_field->is_nullable && !$from_field->is_nullable) {
+ die 'Cannot remove NOT NULL from table field';
+ } elsif (!$from_field->is_nullable && !$to_field->is_nullable) {
+ @$field_defs = map { s/ NOT NULL//; $_} @$field_defs;
+ }
+
my $table_name = $to_field->table->name;
my $table_name_ur = unreserve( $table_name );
return 'ALTER TABLE '.$table_name_ur.' MODIFY ( '.join('', @$field_defs).' )';
}
+sub add_field {
+ my ($new_field, $options) = @_;
+
+ my ($field_create, $field_defs, $trigger_defs, $field_comments) =
+ create_field($new_field, $options, {});
+
+ my $table_name = $new_field->table->name;
+ my $table_name_ur = unreserve( $table_name );
+
+ my $out = sprintf('ALTER TABLE %s ADD ( %s )',
+ $table_name_ur,
+ join('', @$field_defs));
+ return $out;
+}
+
sub create_field {
my ($field, $options, $field_name_scope) = @_;
$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
# then sub "1/0," otherwise just test the truthity of the
# argument and use that (naive?).
#
- if (
+ if (ref $default and defined $$default) {
+ $default = $$default;
+ } elsif (ref $default) {
+ $default = 'NULL';
+ } elsif (
$data_type =~ /^number$/i &&
$default !~ /^-?\d+$/ &&
$default !~ m/null/i
my $seq_name = mk_name( $base_name, 'sq' );
my $trigger_name = mk_name( $base_name, 'ai' );
- push @create, qq[DROP SEQUENCE $seq_name;] if $options->{add_drop_table};
- push @create, "CREATE SEQUENCE $seq_name;";
- push @trigger_defs,
+ 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_ur\n" .
"FOR EACH ROW WHEN (\n" .
" SELECT $seq_name.nextval\n" .
" INTO :new." . $field->name."\n" .
" FROM dual;\n" .
- "END;\n/";
- ;
+ "END;\n";
+
+ #
+ # If wantarray is set we have to omit the last "/" in this statement so it
+ # can be executed by DBI->do() directly.
+ #
+ $trigger .= "/" unless $options->{wantarray};
+
+ push @trigger_defs, $trigger;
}
if ( lc $field->data_type eq 'timestamp' ) {
my $base_name = $table_name_ur . "_". $field_name_ur;
my $trig_name = mk_name( $base_name, 'ts' );
- push @trigger_defs,
+ my $trigger =
"CREATE OR REPLACE TRIGGER $trig_name\n".
"BEFORE INSERT OR UPDATE ON $table_name_ur\n".
"FOR EACH ROW WHEN (new.$field_name_ur IS NULL)\n".
"BEGIN \n".
" SELECT sysdate INTO :new.$field_name_ur FROM dual;\n".
- "END;\n/";
+ "END;\n";
+
+ #
+ # If wantarray is set we have to omit the last "/" in this statement so it
+ # can be executed by DBI->do() directly.
+ #
+ $trigger .= "/" unless $options->{wantarray};
+
+ push @trigger_defs, $trigger;
}
push @field_defs, $field_def;
sub create_view {
my ($view) = @_;
- my $out = sprintf("CREATE VIEW %s AS\n%s;",
+ my $out = sprintf("CREATE VIEW %s AS\n%s",
$view->name,
$view->sql);
=head1 AUTHOR
-Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
+Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>.
=head1 SEE ALSO
projects / dbsrgits/SQL-Translator.git / blobdiff