X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator%2FProducer%2FOracle.pm;h=00a9e2e9de2dfe184fee9f89194c7d4e826775fb;hb=ba506e52c480afe33dfec6b38a12759fad1e7fa2;hp=bfe66fcbcfb44cd3762cda15c88cd1545d47a6e4;hpb=a1d94525d6fbbc48c0d72bf7712a92366519e63f;p=dbsrgits%2FSQL-Translator.git diff --git a/lib/SQL/Translator/Producer/Oracle.pm b/lib/SQL/Translator/Producer/Oracle.pm index bfe66fc..00a9e2e 100644 --- a/lib/SQL/Translator/Producer/Oracle.pm +++ b/lib/SQL/Translator/Producer/Oracle.pm @@ -1,11 +1,7 @@ package SQL::Translator::Producer::Oracle; # ------------------------------------------------------------------- -# $Id: Oracle.pm,v 1.13 2003-06-11 04:00:43 kycl4rk Exp $ -# ------------------------------------------------------------------- -# Copyright (C) 2003 Ken Y. Clark , -# darren chamberlain , -# Chris Mungall +# 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 @@ -22,9 +18,87 @@ package SQL::Translator::Producer::Oracle; # 02111-1307 USA # ------------------------------------------------------------------- +=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. + +=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, 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 like +L does. + +To get this working we removed the slash in those statements in version +0.09002 of L 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: 1.13 $ =~ /(\d+)\.(\d+)/; +$VERSION = '1.60'; $DEBUG = 0 unless defined $DEBUG; use SQL::Translator::Schema::Constants; @@ -39,19 +113,20 @@ my %translate = ( decimal => 'number', float => 'number', int => 'number', + integer => 'number', mediumint => 'number', smallint => 'number', tinyint => 'number', char => 'char', varchar => 'varchar2', - tinyblob => 'CLOB', - blob => 'CLOB', - mediumblob => 'CLOB', - longblob => 'CLOB', - longtext => 'long', - mediumtext => 'long', - text => 'long', - tinytext => 'long', + tinyblob => 'blob', + blob => 'blob', + mediumblob => 'blob', + longblob => 'blob', + tinytext => 'varchar2', + text => 'clob', + longtext => 'clob', + mediumtext => 'clob', enum => 'varchar2', set => 'varchar2', date => 'date', @@ -85,6 +160,13 @@ my %translate = ( macaddr => 'varchar2', bit => 'number', 'bit varying' => 'number', + + # + # Oracle types + # + number => 'number', + varchar2 => 'varchar2', + long => 'clob', ); # @@ -117,6 +199,20 @@ my %ora_reserved = map { $_, 1 } qw( 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; @@ -127,159 +223,161 @@ my %truncated; sub produce { my $translator = shift; $DEBUG = $translator->debug; - $WARN = $translator->show_warnings; + $WARN = $translator->show_warnings || 0; my $no_comments = $translator->no_comments; my $add_drop_table = $translator->add_drop_table; my $schema = $translator->schema; - my $output; + my $delay_constraints = $translator->producer_args->{delay_constraints}; + my ($output, $create, @table_defs, @fk_defs, @trigger_defs, @index_defs, @constraint_defs); - $output .= header_comment unless ($no_comments); + $create .= header_comment unless ($no_comments); if ( $translator->parser_type =~ /mysql/i ) { - $output .= - "-- We assume that default NLS_DATE_FORMAT has been changed\n". - "-- but we set it here anyway to be self-consistent.\n". + $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"; } - # - # Print create for each table - # for my $table ( $schema->get_tables ) { - my $table_name = $table->name or next; - $table_name = mk_name( $table_name, '', undef, 1 ); - my $table_name_ur = unreserve($table_name) or next; + 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 => $delay_constraints, + wantarray => wantarray ? 1 : 0, + } + ); + push @table_defs, @$table_def; + push @fk_defs, @$fk_def; + push @trigger_defs, @$trigger_def; + push @index_defs, @$index_def; + push @constraint_defs, @$constraint_def; + } - my ( @comments, @field_defs, @trigger_defs, @constraint_defs ); + my (@view_defs); + foreach my $view ( $schema->get_views ) { + push @view_defs, create_view($view); + } - push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments; + 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; + } +} - my %field_name_scope; - for my $field ( $table->get_fields ) { - # - # Field name - # - my $field_name = mk_name( - $field->name, '', \%field_name_scope, 1 - ); - my $field_name_ur = unreserve( $field_name, $table_name ); - my $field_def = $field_name_ur; - - # - # Datatype - # - my $check; - my $data_type = lc $field->data_type; - my @size = $field->size; - my %extra = $field->extra; - my $list = $extra{'list'} || []; - my $commalist = join ",", @$list; - - if ( $data_type eq 'enum' ) { - $check = "CHECK ($field_name 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 { - $data_type = defined $translate{ $data_type } ? - $translate{ $data_type } : - die "Unknown datatype: $data_type\n"; - } +sub create_table { + my ($table, $options) = @_; + my $table_name = $table->name; + + my $item = ''; + my $drop; + my (@create, @field_defs, @constraint_defs, @fk_defs, @trigger_defs); - $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 ) { - $field_def .= sprintf( - ' DEFAULT %s', - $default =~ m/null/i ? 'NULL' : "'$default'" - ); - } + my $table_name_ur = unreserve($table_name) or next; - # - # Not null constraint - # - unless ( $field->is_nullable ) { - my $constraint_name = mk_name($field_name_ur, 'nn'); - $field_def .= ' CONSTRAINT ' . $constraint_name . ' NOT NULL'; - } + 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}; - $field_def .= " $check" if $check; - - # - # Auto_increment - # - if ( $field->is_auto_increment ) { - my $base_name = $table_name . "_". $field_name; - my $seq_name = mk_name( $base_name, 'sq' ); - my $trigger_name = mk_name( $base_name, 'ai' ); - - push @trigger_defs, - "CREATE SEQUENCE $seq_name;\n" . - "CREATE OR REPLACE TRIGGER $trigger_name\n" . - "BEFORE INSERT ON $table_name\n" . - "FOR EACH ROW WHEN (\n" . - " new.$field_name_ur IS NULL". - " OR new.$field_name_ur = 0\n". - ")\n". - "BEGIN\n" . - " SELECT $seq_name.nextval\n" . - " INTO :new." . $field->name."\n" . - " FROM dual;\n" . - "END;\n/"; - ; - } + my ( %field_name_scope, @field_comments ); + for my $field ( $table->get_fields ) { + my ($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; + } - if ( lc $field->data_type eq 'timestamp' ) { - my $base_name = $table_name . "_". $field_name_ur; - my $trig_name = mk_name( $base_name, 'ts' ); - push @trigger_defs, - "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/"; + # + # 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"; + } } - - push @field_defs, $field_def; } # # Table constraints # - my $constraint_name_default; for my $c ( $table->get_constraints ) { my $name = $c->name || ''; my @fields = map { unreserve( $_, $table_name ) } $c->fields; my @rfields = map { unreserve( $_, $table_name ) } $c->reference_fields; - next unless @fields; + next if !@fields && $c->type ne CHECK_C; if ( $c->type eq PRIMARY_KEY ) { - $name ||= mk_name( $table_name, 'pk' ); - push @constraint_defs, "CONSTRAINT $name PRIMARY KEY ". - '(' . join( ', ', @fields ) . ')'; + # create a name if delay_constraints + $name ||= mk_name( $table_name, 'pk' ) + if $options->{delay_constraints}; + push @constraint_defs, ($name ? "CONSTRAINT $name " : '') . + 'PRIMARY KEY (' . join( ', ', @fields ) . ')'; } elsif ( $c->type eq UNIQUE ) { - $name ||= mk_name( $table_name, ++$constraint_name_default ); + # 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; + } + + $name ||= mk_name( $name || $table_name, 'u' ); + + for my $f ( $c->fields ) { + my $field_def = $table->get_field( $f ) or next; + my $dtype = $translate{ $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" + } + } + push @constraint_defs, "CONSTRAINT $name UNIQUE " . '(' . join( ', ', @fields ) . ')'; } + elsif ( $c->type eq CHECK_C ) { + $name ||= mk_name( $name || $table_name, 'ck' ); + my $expression = $c->expression || ''; + push @constraint_defs, "CONSTRAINT $name CHECK ($expression)"; + } elsif ( $c->type eq FOREIGN_KEY ) { - $name ||= mk_name( $table_name, ++$constraint_name_default ); - my $def = "CONSTRAINT $name FOREIGN KEY REFERENCES ". - $c->reference_table; + $name = mk_name( join('_', $table_name, $c->fields). '_fk' ); + my $def = "CONSTRAINT $name FOREIGN KEY "; + + if ( @fields ) { + $def .= '(' . join( ', ', @fields ) . ')'; + } + + my $ref_table = unreserve($c->reference_table); + + $def .= " REFERENCES $ref_table"; if ( @rfields ) { $def .= ' (' . join( ', ', @rfields ) . ')'; @@ -294,11 +392,12 @@ sub produce { $def .= ' ON DELETE '.join( ' ', $c->on_delete ); } - 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 @constraint_defs, $def; + push @fk_defs, sprintf("ALTER TABLE %s ADD %s", $table_name_ur, $def); } } @@ -306,7 +405,6 @@ sub produce { # Index Declarations # my @index_defs = (); - my $idx_name_default; for my $index ( $table->get_indices ) { my $index_name = $index->name || ''; my $index_type = $index->type || NORMAL; @@ -314,27 +412,49 @@ sub produce { $index->fields; next unless @fields; + 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 = mk_name( $table_name, 'pk' ); + $index_name = $index_name ? mk_name( $index_name ) + : mk_name( $table_name, 'pk' ); push @field_defs, 'CONSTRAINT '.$index_name.' PRIMARY KEY '. '(' . join( ', ', @fields ) . ')'; } - elsif ( $index_type eq UNIQUE ) { - $index_name = mk_name( - $table_name, $index_name || ++$idx_name_default - ); - push @field_defs, 'CONSTRAINT ' . $index_name . ' UNIQUE ' . - '(' . join( ', ', @fields ) . ')'; - } - elsif ( $index_type eq NORMAL ) { - $index_name = mk_name( - $table_name, $index_name || ++$idx_name_default - ); + $index_name = $index_name ? mk_name( $index_name ) + : mk_name( $table_name, $index_name || 'i' ); push @index_defs, "CREATE INDEX $index_name on $table_name_ur (". join( ', ', @fields ). - ");"; + ")$index_options"; + } + elsif ( $index_type eq UNIQUE ) { + $index_name = $index_name ? mk_name( $index_name ) + : mk_name( $table_name, $index_name || 'i' ); + push @index_defs, + "CREATE UNIQUE INDEX $index_name on $table_name_ur (". + join( ', ', @fields ). + ")$index_options"; } else { warn "Unknown index type ($index_type) on table $table_name.\n" @@ -342,23 +462,25 @@ sub produce { } } - my $create_statement; - $create_statement = "DROP TABLE $table_name_ur;\n" if $add_drop_table; - $create_statement .= - join( ",\n", map { "-- $_" } $table->comments ) . - "CREATE TABLE $table_name_ur (\n" . - join( ",\n", map { " $_" } @field_defs, @constraint_defs ) . - "\n);" - ; - - $output .= join( "\n\n", - @comments, - $create_statement, - @trigger_defs, - @index_defs, - '' - ); - } + if ( my @table_comments = $table->comments ) { + for my $comment ( @table_comments ) { + next unless $comment; + $comment =~ s/'/''/g; + push @field_comments, "COMMENT ON TABLE $table_name_ur is\n '". + $comment . "'" unless $options->{no_comments} + ; + } + } + + my $table_options = @table_options + ? "\n".join("\n", @table_options) : ''; + push @create, "CREATE TABLE $table_name_ur (\n" . + join( ",\n", map { " $_" } @field_defs, + ($options->{delay_constraints} ? () : @constraint_defs) ) . + "\n)$table_options"; + + @constraint_defs = map { 'ALTER TABLE '.$table_name_ur.' ADD '.$_ } + @constraint_defs; if ( $WARN ) { if ( %truncated ) { @@ -373,13 +495,262 @@ sub produce { } } - return $output; + return \@create, \@fk_defs, \@trigger_defs, \@index_defs, ($options->{delay_constraints} ? \@constraint_defs : []); +} + +sub alter_field { + my ($from_field, $to_field, $options) = @_; + + my ($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) = @_; + + my (@create, @field_defs, @trigger_defs, @field_comments); + + my $table_name = $field->table->name; + my $table_name_ur = unreserve( $table_name ); + + # + # Field name + # + my $field_name = mk_name( + $field->name, '', $field_name_scope, 1 + ); + + my $field_name_ur = unreserve( $field_name, $table_name ); + my $field_def = $field_name_ur; + $field->name( $field_name_ur ); + + # + # Datatype + # + my $check; + my $data_type = lc $field->data_type; + my @size = $field->size; + my %extra = $field->extra; + my $list = $extra{'list'} || []; + # \todo deal with embedded quotes + my $commalist = join( ', ', map { qq['$_'] } @$list ); + + if ( $data_type eq 'enum' ) { + $check = "CHECK ($field_name_ur 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 { + $data_type = defined $translate{ $data_type } ? + $translate{ $data_type } : + $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; + } + + $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 ) { + # + # 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 = $default =~ m/null/i ? 'NULL' : "'$default'" + } + + $field_def .= " DEFAULT $default", + } + + # + # Not null constraint + # + unless ( $field->is_nullable ) { + $field_def .= ' NOT NULL'; + } + + $field_def .= " $check" if $check; + + # + # Auto_increment + # + if ( $field->is_auto_increment ) { + my $base_name = $table_name_ur . "_". $field_name; + 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"; + my $trigger = + "CREATE OR REPLACE TRIGGER $trigger_name\n" . + "BEFORE INSERT ON $table_name_ur\n" . + "FOR EACH ROW WHEN (\n" . + " new.$field_name_ur IS NULL". + " OR new.$field_name_ur = 0\n". + ")\n". + "BEGIN\n" . + " SELECT $seq_name.nextval\n" . + " INTO :new." . $field->name."\n" . + " FROM dual;\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' ); + 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"; + + # + # 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; + + if ( my $comment = $field->comments ) { + $comment =~ s/'/''/g; + push @field_comments, + "COMMENT ON COLUMN $table_name_ur.$field_name_ur is\n '" . + $comment . "';" unless $options->{no_comments}; + } + + return \@create, \@field_defs, \@trigger_defs, \@field_comments; + +} + + +sub create_view { + my ($view) = @_; + + my $out = sprintf("CREATE VIEW %s AS\n%s", + $view->name, + $view->sql); + + return $out; } # ------------------------------------------------------------------- sub mk_name { my $basename = shift || ''; my $type = shift || ''; + $type = '' if $type =~ /^\d/; my $scope = shift || ''; my $critical = shift || ''; my $basename_orig = $basename; @@ -400,9 +771,9 @@ sub mk_name { $scope ||= \%global_names; if ( my $prev = $scope->{ $name } ) { my $name_orig = $name; - $name .= sprintf( "%02d", ++$prev ); - substr($name, $max_id_length - 3) = "00" - if length( $name ) > $max_id_length; + substr($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; @@ -442,40 +813,19 @@ sub unreserve { # Oscar Wilde # ------------------------------------------------------------------- -=head1 NAME - -SQL::Translator::Producer::Oracle - Oracle SQL producer - -=head1 SYNOPSIS - - use SQL::Translator::Parser::MySQL; - use SQL::Translator::Producer::Oracle; - - my $original_create = ""; # get this from somewhere... - my $translator = SQL::Translator->new; - - $translator->parser("SQL::Translator::Parser::MySQL"); - $translator->producer("SQL::Translator::Producer::Oracle"); - - my $new_create = $translator->translate($original_create); - -=head1 DESCRIPTION - -SQL::Translator::Producer::Oracle takes a parsed data structure, -created by a SQL::Translator::Parser subclass, and turns it into a -create string suitable for use with an Oracle database. +=pod =head1 CREDITS -A hearty "thank-you" to Tim Bunce for much of the logic stolen from -his "mysql2ora" script. +Mad props to Tim Bunce for much of the logic stolen from his "mysql2ora" +script. =head1 AUTHOR -Ken Y. Clark Ekclark@cpan.orgE +Ken Youens-Clark Ekclark@cpan.orgE. =head1 SEE ALSO -perl(1). +SQL::Translator, DDL::Oracle, mysql2ora. =cut