X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator%2FProducer%2FOracle.pm;h=9b8adbc07c6121a8b60d1365a1d58b46a6742296;hb=ad5cf454c0eb596a777488a9234582f2dc9b8fd4;hp=2e4374e25d324320cd2231f42b2413634404e708;hpb=16dc997057306c2b93d146478b7b20830d3b5d80;p=dbsrgits%2FSQL-Translator.git diff --git a/lib/SQL/Translator/Producer/Oracle.pm b/lib/SQL/Translator/Producer/Oracle.pm index 2e4374e..9b8adbc 100644 --- a/lib/SQL/Translator/Producer/Oracle.pm +++ b/lib/SQL/Translator/Producer/Oracle.pm @@ -1,317 +1,816 @@ package SQL::Translator::Producer::Oracle; -#----------------------------------------------------- -# $Id: Oracle.pm,v 1.1.1.1 2002-03-01 02:26:25 kycl4rk Exp $ -# -# File : SQL/Translator/Producer/Oracle.pm -# Programmer : Ken Y. Clark, kclark@logsoft.com -# Created : 2002/02/27 -# Purpose : Oracle SQL producer -#----------------------------------------------------- +=head1 NAME -use strict; -use SQL::Translator::Producer; -use vars qw( $VERSION ); -$VERSION = (qw$Revision: 1.1.1.1 $)[-1]; +SQL::Translator::Producer::Oracle - Oracle SQL producer -use base qw[ SQL::Translator::Producer ]; +=head1 SYNOPSIS -my $max_identifier_length = 30; -my %used_identifiers = (); + 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, 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 warnings; +our ( $DEBUG, $WARN ); +our $VERSION = '1.59'; +$DEBUG = 0 unless defined $DEBUG; + +use SQL::Translator::Schema::Constants; +use SQL::Translator::Utils qw(header_comment); my %translate = ( + # + # MySQL types + # bigint => 'number', - double => 'number', + double => 'float', decimal => 'number', - float => 'number', + float => 'float', 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', datetime => 'date', time => 'date', timestamp => 'date', year => 'date', -); - -sub to { 'Oracle' } - -sub translate { - my ( $self, $data ) = @_; - - #print "got ", scalar keys %$data, " tables:\n"; - #print join(', ', keys %$data), "\n"; - #print Dumper( $data ); # - # Output + # PostgreSQL types # - my $output = $self->header; + 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', # - # Print create for each table + # Oracle types # - my ( $index_i, $trigger_i ) = ( 1, 1 ); - for my $table_name ( sort keys %$data ) { - check_identifier( $table_name ); - - my ( @comments, @field_decs, @trigger_decs ); - - my $table = $data->{ $table_name }; - push @comments, "#\n# Table: $table_name\n#"; - - for my $field ( - map { $_->[1] } - sort { $a->[0] <=> $b->[0] } - map { [ $_->{'order'}, $_ ] } - values %{ $table->{'fields'} } - ) { - # - # Field name - # - my $field_str = check_identifier( $field->{'name'} ); - - # - # Datatype - # - my $data_type = $field->{'data_type'}; - $data_type = defined $translate{ $data_type } ? - $translate{ $data_type } : - die "Unknown datatype: $data_type\n"; - $field_str .= ' '.$data_type; - $field_str .= '('.$field->{'size'}.')' if defined $field->{'size'}; - - # - # Default value - # - if ( $field->{'default'} ) { - # next if $field->{'default'} eq 'NULL'; - $field_str .= sprintf( - ' DEFAULT %s', - $field->{'default'} =~ m/null/i ? 'NULL' : - "'".$field->{'default'}."'" - ); - } + number => 'number', + varchar2 => 'varchar2', + long => 'clob', +); - # - # Not null constraint - # - unless ( $field->{'null'} ) { - my $constraint_name = make_identifier($field->{'name'}, '_nn'); - $field_str .= ' CONSTRAINT ' . $constraint_name . ' NOT NULL'; +# +# 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); + + $create .= header_comment unless ($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 ) { + 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; + } - # - # Auto_increment - # - if ( $field->{'is_auto_inc'} ) { - my $trigger_no = $trigger_i++; - my $trigger_sequence = - join( '_', 'seq' , $field->{'name'}, $trigger_no ); - my $trigger_name = - join( '_', 'autoinc', $field->{'name'}, $trigger_no ); - - push @trigger_decs, - 'CREATE SEQUENCE ' . $trigger_sequence . ";" . - 'CREATE OR REPLACE TRIGGER ' . $trigger_name . - ' BEFORE INSERT ON ' . $table_name . - ' FOR EACH ROW WHEN (new.' . $field->{'name'} . ' is null) ' . - ' BEGIN ' . - ' SELECT ' . $trigger_sequence . '.nextval ' . - ' INTO :new.' . $field->{'name'} . - " FROM dual;\n" . - ' END ' . $trigger_name . ";/" - ; + 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; + } - push @field_decs, $field_str; + 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 ( $table->get_fields ) { + my ($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; } # - # Index Declarations + # Table options # - my @index_decs = (); - for my $index ( @{ $table->{'indeces'} } ) { - my $index_name = $index->{'name'} || ''; - my $index_type = $index->{'type'} || 'normal'; - my @fields = @{ $index->{'fields'} } or next; - - if ( $index_type eq 'primary_key' ) { - if ( !$index_name ) { - $index_name = make_identifier( $table_name, 'i_', '_pk' ); - } - elsif ( $index_name !~ m/^i_/ ) { - $index_name = make_identifier( $table_name, 'i_' ); + 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 ( $index_name !~ m/_pk$/ ) { - $index_name = make_identifier( $table_name, '_pk' ); + elsif ( !defined $value ) { + push @table_options, $key; } else { - $index_name = make_identifier( $index_name ); + push @table_options, "$key $value"; } - - push @field_decs, 'CONSTRAINT ' . $index_name . ' PRIMARY KEY ' . - '(' . join( ', ', @fields ) . ')'; } + } - elsif ( $index_type eq 'unique' ) { - if ( !$index_name ) { - $index_name = make_identifier( join( '_', @fields ), 'u_' ); - } - elsif ( $index_name !~ m/^u_/ ) { - $index_name = make_identifier( $index_name, 'u_' ); - } - else { - $index_name = make_identifier( $index_name ); + # + # Table constraints + # + for my $c ( $table->get_constraints ) { + my $name = $c->name || ''; + my @fields = map { quote($_,$qf) } $c->fields; + my @rfields = map { quote($_,$qf) } $c->reference_fields; + + next if !@fields && $c->type ne CHECK_C; + + if ( $c->type eq PRIMARY_KEY ) { + # create a name if delay_constraints + $name ||= mk_name( $table_name, 'pk' ) + if $options->{delay_constraints}; + $name = quote($name,$qf); + push @constraint_defs, ($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' ); + } + + $name = quote($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" + } } - push @field_decs, 'CONSTRAINT ' . $index_name . ' UNIQUE ' . + push @constraint_defs, "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 || ''; + push @constraint_defs, "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 || ''); + + my $def = "CONSTRAINT $name FOREIGN KEY "; - elsif ( $index_type eq 'normal' ) { - if ( !$index_name ) { - $index_name = - make_identifier($table_name, 'i_', '_'.$index_i++ ); + if ( @fields ) { + $def .= '(' . join( ', ', @fields ) . ')'; } - elsif ( $index_name !~ m/^i_/ ) { - $index_name = make_identifier( $index_name, 'i_' ); + + my $ref_table = quote($c->reference_table,$qt); + + $def .= " REFERENCES $ref_table"; + + if ( @rfields ) { + $def .= ' (' . join( ', ', @rfields ) . ')'; } - else { - $index_name = make_identifier( $index_name ); + + if ( $c->match_type ) { + $def .= ' MATCH ' . + ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; } - push @index_decs, "CREATE INDEX $index_name on $table_name (". - join( ', ', @{ $index->{'fields'} } ). - ");" - ; + if ( $on_delete && $on_delete ne "RESTRICT") { + $def .= ' ON DELETE '.$c->on_delete; + } + + # disabled by plu 2007-12-29 - doesn't exist for oracle + #if ( $c->on_update ) { + # $def .= ' ON UPDATE '. $c->on_update; + #} + + push @fk_defs, sprintf("ALTER TABLE %s ADD %s", $table_name_q, $def); } + } + # + # 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; + + 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 ) { + $index_name = $index_name ? mk_name( $index_name ) + : mk_name( $table_name, $index_name || 'i' ); + $index_name = quote($index_name, $qf); + push @index_defs, + "CREATE INDEX $index_name on $table_name_q (". + join( ', ', @fields ). + ")$index_options"; + } + elsif ( $index_type eq UNIQUE ) { + $index_name = $index_name ? mk_name( $index_name ) + : mk_name( $table_name, $index_name || 'i' ); + $index_name = quote($index_name, $qf); + push @index_defs, + "CREATE UNIQUE INDEX $index_name on $table_name_q (". + join( ', ', @fields ). + ")$index_options"; + } else { - warn "On table $table_name, unknown index type: $index_type\n"; + warn "Unknown index type ($index_type) on table $table_name.\n" + if $WARN; } } - my $create_statement = "CREATE TABLE $table_name (\n". - join( ",\n", map { " $_" } @field_decs ). - "\n);" - ; - - $output .= join( "\n\n", - @comments, - $create_statement, - @trigger_decs, - @index_decs, - '' - ); + 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_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"; + } } - $output .= "#\n# End\n#\n"; + return \@create, \@fk_defs, \@trigger_defs, \@index_defs, ($options->{delay_constraints} ? \@constraint_defs : []); } -# -# Used to make index names -# -sub make_identifier { - my ( $identifier, @mutations ) = @_; - my $length_of_mutations; - for my $mutation ( @mutations ) { - $length_of_mutations += length( $mutation ); +sub alter_field { + my ($from_field, $to_field, $options) = @_; + + my $qt = $options->{quote_table_names}; + my ($field_create, $field_defs, $trigger_defs, $field_comments) = + create_field($to_field, $options, {}); + + # Fix ORA-01442 + if ($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; } - if ( - length( $identifier ) + $length_of_mutations > - $max_identifier_length - ) { - $identifier = substr( - $identifier, - 0, - $max_identifier_length - $length_of_mutations - ); + my $table_name = quote($to_field->table->name,$qt); + + return 'ALTER TABLE '.$table_name.' MODIFY ( '.join('', @$field_defs).' )'; +} + +sub add_field { + my ($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'} || []; + # \todo deal with embedded quotes + my $commalist = join( ', ', map { qq['$_'] } @$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'; } - for my $mutation ( @mutations ) { - if ( $mutation =~ m/.+_$/ ) { - $identifier = $mutation.$identifier; + # 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; } - elsif ( $mutation =~ m/^_.+/ ) { - $identifier = $identifier.$mutation; + } + + # + # 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] ||= $max_size{$_}; } } - if ( $used_identifiers{ $identifier } ) { - my $index = 1; - if ( $identifier =~ m/_(\d+)$/ ) { - $index = $1; - $identifier = substr( - $identifier, - 0, - length( $identifier ) - ( length( $index ) + 1 ) - ); + $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'" } - $index++; - return make_identifier( $identifier, '_'.$index ); + + $field_def .= " DEFAULT $default", + } + + # + # Not null constraint + # + unless ( $field->is_nullable ) { + $field_def .= ' NOT NULL'; } - $used_identifiers{ $identifier } = 1; + $field_def .= " $check" if $check; + + # + # Auto_increment + # + if ( $field->is_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; + } + + if ( lc $field->data_type eq 'timestamp' ) { + my $base_name = $table_name . "_". $field_name; + my $trig_name = quote(mk_name( $base_name, 'ts' ), $qt); + my $trigger = + "CREATE OR REPLACE TRIGGER $trig_name\n". + "BEFORE INSERT OR UPDATE ON $table_name_q\n". + "FOR EACH ROW WHEN (new.$field_name_q IS NULL)\n". + "BEGIN\n". + " SELECT sysdate INTO :new.$field_name_q FROM dual;\n". + "END;\n"; + + push @trigger_defs, $trigger; + } + + push @field_defs, $field_def; + + if ( my $comment = $field->comments ) { + $comment =~ s/'/''/g; + push @field_comments, + "COMMENT ON COLUMN $table_name_q.$field_name_q is\n '" . + $comment . "';" unless $options->{no_comments}; + } + + return \@create, \@field_defs, \@trigger_defs, \@field_comments; - return $identifier; } -# -# Checks to see if an identifier is not too long -# -sub check_identifier { - my $identifier = shift; - die "Identifier '$identifier' is too long, unrecoverable error.\n" - if length( $identifier ) > $max_identifier_length; - return $identifier; + +sub create_view { + my ($view, $options) = @_; + my $qt = $options->{quote_table_names}; + my $view_name = quote($view->name,$qt); + + my @create; + push @create, qq[DROP VIEW $view_name] + if $options->{add_drop_view}; + + push @create, sprintf("CREATE VIEW %s AS\n%s", + $view_name, + $view->sql); + + return \@create; } -1; +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; + } -#----------------------------------------------------- -# All bad art is the result of good intentions. -# Oscar Wilde -#----------------------------------------------------- + $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", $prev++ ); -=head1 NAME + warn "The name '$name_orig' has been changed to ", + "'$name' to make it unique.\n" if $WARN; -SQL::Translator::Producer::Oracle - Oracle SQL producer + $scope->{ $name_orig }++; + } -=head1 SYNOPSIS + $scope->{ $name }++; + return $name; +} + +1; - use SQL::Translator::Producer::Oracle; +sub quote { + my ($name, $q) = @_; + $q && $name ? "$quote_char$name$quote_char" : $name; +} -=head1 DESCRIPTION -Blah blah blah. +# ------------------------------------------------------------------- +# 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 AUTHOR +=head1 AUTHORS -Ken Y. Clark, kclark@logsoft.com +Ken Youens-Clark Ekclark@cpan.orgE, +Alexander Hartmaier Eabraxxa@cpan.orgE, +Fabien Wernli Efaxmodem@cpan.orgE. =head1 SEE ALSO -perl(1). +SQL::Translator, DDL::Oracle, mysql2ora. =cut