package SQL::Translator::Producer::PostgreSQL;
# -------------------------------------------------------------------
-# $Id: PostgreSQL.pm,v 1.2 2002-11-22 03:03:40 kycl4rk Exp $
+# $Id: PostgreSQL.pm,v 1.28 2006-11-20 23:56:14 schiffbruechige Exp $
# -------------------------------------------------------------------
-# Copyright (C) 2002 Ken Y. Clark <kclark@cpan.org>,
-# darren chamberlain <darren@cpan.org>
+# Copyright (C) 2002-4 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
# 02111-1307 USA
# -------------------------------------------------------------------
+=head1 NAME
+
+SQL::Translator::Producer::PostgreSQL - PostgreSQL producer for SQL::Translator
+
+=head1 SYNOPSIS
+
+ my $t = SQL::Translator->new( parser => '...', producer => 'PostgreSQL' );
+ $t->translate;
+
+=head1 DESCRIPTION
+
+Creates a DDL suitable for PostgreSQL. Very heavily based on the Oracle
+producer.
+
+=cut
+
use strict;
-use vars qw($VERSION $DEBUG);
-$VERSION = sprintf "%d.%02d", q$Revision: 1.2 $ =~ /(\d+)\.(\d+)/;
+use warnings;
+use vars qw[ $DEBUG $WARN $VERSION ];
+$VERSION = sprintf "%d.%02d", q$Revision: 1.28 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 1 unless defined $DEBUG;
+use SQL::Translator::Schema::Constants;
+use SQL::Translator::Utils qw(header_comment);
use Data::Dumper;
-my %translate = (
+my %translate;
+my $max_id_length;
+
+BEGIN {
+
+ %translate = (
#
# MySQL types
#
bigint => 'bigint',
- double => 'double precision',
- decimal => 'decimal',
- float => 'double precision',
+ double => 'numeric',
+ decimal => 'numeric',
+ float => 'numeric',
int => 'integer',
mediumint => 'integer',
smallint => 'smallint',
tinyint => 'smallint',
- char => 'char',
- varchar => 'varchar',
+ char => 'character',
+ varchar => 'character varying',
longtext => 'text',
mediumtext => 'text',
text => 'text',
blob => 'bytea',
mediumblob => 'bytea',
longblob => 'bytea',
- enum => 'varchar',
- set => 'varchar',
+ enum => 'character varying',
+ set => 'character varying',
date => 'date',
datetime => 'timestamp',
time => 'date',
#
# Oracle types
#
-);
+ number => 'integer',
+ char => 'character',
+ varchar2 => 'character varying',
+ long => 'text',
+ CLOB => 'bytea',
+ date => 'date',
+ #
+ # Sybase types
+ #
+ int => 'integer',
+ money => 'money',
+ varchar => 'character varying',
+ datetime => 'timestamp',
+ text => 'text',
+ real => 'numeric',
+ comment => 'text',
+ bit => 'bit',
+ tinyint => 'smallint',
+ float => 'numeric',
+);
-sub import {
- warn "loading " . __PACKAGE__ . "...\n";
+ $max_id_length = 62;
}
+my %reserved = map { $_, 1 } qw[
+ ALL ANALYSE ANALYZE AND ANY AS ASC
+ BETWEEN BINARY BOTH
+ CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS
+ CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER
+ DEFAULT DEFERRABLE DESC DISTINCT DO
+ ELSE END EXCEPT
+ FALSE FOR FOREIGN FREEZE FROM FULL
+ GROUP HAVING
+ ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL
+ JOIN LEADING LEFT LIKE LIMIT
+ NATURAL NEW NOT NOTNULL NULL
+ OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS
+ PRIMARY PUBLIC REFERENCES RIGHT
+ SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE
+ UNION UNIQUE USER USING VERBOSE WHEN WHERE
+];
+
+# my $max_id_length = 62;
+my %used_identifiers = ();
+my %global_names;
+my %unreserve;
+my %truncated;
+
+=pod
+
+=head1 PostgreSQL Create Table Syntax
+
+ CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name (
+ { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ]
+ | table_constraint } [, ... ]
+ )
+ [ INHERITS ( parent_table [, ... ] ) ]
+ [ WITH OIDS | WITHOUT OIDS ]
+where column_constraint is:
+
+ [ CONSTRAINT constraint_name ]
+ { NOT NULL | NULL | UNIQUE | PRIMARY KEY |
+ CHECK (expression) |
+ REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ]
+ [ ON DELETE action ] [ ON UPDATE action ] }
+ [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
+
+and table_constraint is:
+
+ [ CONSTRAINT constraint_name ]
+ { UNIQUE ( column_name [, ... ] ) |
+ PRIMARY KEY ( column_name [, ... ] ) |
+ CHECK ( expression ) |
+ FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ]
+ [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] }
+ [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
+
+=head1 Create Index Syntax
+
+ CREATE [ UNIQUE ] INDEX index_name ON table
+ [ USING acc_method ] ( column [ ops_name ] [, ...] )
+ [ WHERE predicate ]
+ CREATE [ UNIQUE ] INDEX index_name ON table
+ [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] )
+ [ WHERE predicate ]
+
+=cut
+
+# -------------------------------------------------------------------
sub produce {
- my ( $translator, $data ) = @_;
- debug("Beginning production\n");
- my $create = sprintf "--\n-- Created by %s\n-- Created on %s\n-- \n\n",
- __PACKAGE__, scalar localtime;
-
- for my $table ( keys %{ $data } ) {
- debug( "Looking at table '$table'\n" );
- my $table_data = $data->{$table};
- my @fields = sort {
- $table_data->{'fields'}->{$a}->{'order'}
- <=>
- $table_data->{'fields'}->{$b}->{'order'}
- } keys %{ $table_data->{'fields'} };
-
- $create .= "--\n-- Table: $table\n--\n";
- $create .= "CREATE TABLE $table (\n";
+ my $translator = shift;
+ $DEBUG = $translator->debug;
+ $WARN = $translator->show_warnings;
+ my $no_comments = $translator->no_comments;
+ my $add_drop_table = $translator->add_drop_table;
+ my $schema = $translator->schema;
- #
- # Fields
- #
- my @field_statements;
- for my $field ( @fields ) {
- debug("Looking at field '$field'\n");
- my $field_data = $table_data->{'fields'}->{ $field };
- my @fdata = ("", $field);
-
- # data type and size
- push @fdata, sprintf "%s%s",
- $field_data->{'data_type'},
- ( defined $field_data->{'size'} )
- ? "($field_data->{'size'})" : '';
-
- # Null?
- push @fdata, "NOT NULL" unless $field_data->{'null'};
-
- # Default? XXX Need better quoting!
- my $default = $field_data->{'default'};
- if ( defined $default ) {
- push @fdata, "DEFAULT '$default'";
-# if (int $default eq "$default") {
-# push @fdata, "DEFAULT $default";
-# } else {
-# push @fdata, "DEFAULT '$default'";
-# }
- }
+ my $qt = '';
+ $qt = '"' if ($translator->quote_table_names);
+ my $qf = '';
+ $qf = '"' if ($translator->quote_field_names);
+
+ my $output;
+ $output .= header_comment unless ($no_comments);
+# my %used_index_names;
- # auto_increment?
- push @fdata, "auto_increment" if $field_data->{'is_auto_inc'};
+ my (@table_defs, @fks);
+ for my $table ( $schema->get_tables ) {
- # primary key?
- push @fdata, "PRIMARY KEY" if $field_data->{'is_primary_key'};
+ my ($table_def, $fks) = create_table($table,
+ { quote_table_names => $qt,
+ quote_field_names => $qf,
+ no_comments => $no_comments,
+ add_drop_table => $add_drop_table,});
+ push @table_defs, $table_def;
+ push @fks, @$fks;
- push @field_statements, join( " ", @fdata );
+ }
+
+ $output = join("\n\n", @table_defs);
+ if ( @fks ) {
+ $output .= "--\n-- Foreign Key Definitions\n--\n\n" unless $no_comments;
+ $output .= join( "\n\n", @fks ) . "\n";
+ }
+ if ( $WARN ) {
+ if ( %truncated ) {
+ warn "Truncated " . keys( %truncated ) . " names:\n";
+ warn "\t" . join( "\n\t", sort keys %truncated ) . "\n";
}
- $create .= join( ",\n", @field_statements );
+
+ if ( %unreserve ) {
+ warn "Encounted " . keys( %unreserve ) .
+ " unsafe names in schema (reserved or invalid):\n";
+ warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n";
+ }
+ }
+
+ return $output;
+}
+
+# -------------------------------------------------------------------
+sub mk_name {
+ my $basename = shift || '';
+ my $type = shift || '';
+ my $scope = shift || '';
+ my $critical = shift || '';
+ my $basename_orig = $basename;
+# my $max_id_length = 62;
+ 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;
+ $name .= sprintf( "%02d", ++$prev );
+ substr($name, $max_id_length - 3) = "00"
+ if length( $name ) > $max_id_length;
+
+ warn "The name '$name_orig' has been changed to ",
+ "'$name' to make it unique.\n" if $WARN;
+
+ $scope->{ $name_orig }++;
+ }
+
+ $scope->{ $name }++;
+ return $name;
+}
+
+# -------------------------------------------------------------------
+sub unreserve {
+ my $name = shift || '';
+ my $schema_obj_name = shift || '';
+
+ my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : '';
+
+ # also trap fields that don't begin with a letter
+ return $name if (!$reserved{ uc $name }) && $name =~ /^[a-z]/i;
+
+ if ( $schema_obj_name ) {
+ ++$unreserve{"$schema_obj_name.$name"};
+ }
+ else {
+ ++$unreserve{"$name (table name)"};
+ }
+
+ my $unreserve = sprintf '%s_', $name;
+ return $unreserve.$suffix;
+}
+
+# -------------------------------------------------------------------
+sub next_unused_name {
+ my $name = shift || '';
+ my $used_names = shift || '';
+
+ my %used_names = %$used_names;
+
+ if ( !defined($used_names{$name}) ) {
+ $used_names{$name} = $name;
+ return $name;
+ }
+
+ my $i = 2;
+ while ( defined($used_names{$name . $i}) ) {
+ ++$i;
+ }
+ $name .= $i;
+ $used_names{$name} = $name;
+ return $name;
+}
+
+sub create_table
+{
+ my ($table, $options) = @_;
+
+ my $qt = $options->{quote_table_names} || '';
+ my $qf = $options->{quote_field_names} || '';
+ my $no_comments = $options->{no_comments} || 0;
+ my $add_drop_table = $options->{add_drop_table} || 0;
+
+ my $table_name = $table->name or next;
+ $table_name = mk_name( $table_name, '', undef, 1 );
+ my $table_name_ur = $qt ? $table_name : unreserve($table_name);
+ $table->name($table_name_ur);
+
+# print STDERR "$table_name table_name\n";
+ my ( @comments, @field_defs, @sequence_defs, @constraint_defs, @fks );
+
+ push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments;
+
+ if ( $table->comments and !$no_comments ){
+ my $c = "-- Comments: \n-- ";
+ $c .= join "\n-- ", $table->comments;
+ $c .= "\n--";
+ push @comments, $c;
+ }
+
+ #
+ # Fields
+ #
+ my %field_name_scope;
+ for my $field ( $table->get_fields ) {
+ push @field_defs, create_field($field, { quote_table_names => $qt,
+ quote_field_names => $qf,
+ table_name => $table_name_ur,
+ constraint_defs => \@constraint_defs,});
+ }
+
+ #
+ # Index Declarations
+ #
+ my @index_defs = ();
+ # my $idx_name_default;
+ for my $index ( $table->get_indices ) {
+ my ($idef, $constraints) = create_index($index,
+ {
+ quote_field_names => $qf,
+ quote_table_names => $qt,
+ table_name => $table_name,
+ });
+ push @index_defs, $idef;
+ push @constraint_defs, @$constraints;
+ }
+
+ #
+ # Table constraints
+ #
+ my $c_name_default;
+ for my $c ( $table->get_constraints ) {
+ my ($cdefs, $fks) = create_constraint($c,
+ {
+ quote_field_names => $qf,
+ quote_table_names => $qt,
+ table_name => $table_name,
+ });
+ push @constraint_defs, @$cdefs;
+ push @fks, @$fks;
+ }
+
+ my $create_statement;
+ $create_statement = join("\n", @comments);
+ $create_statement .= qq[DROP TABLE $qt$table_name_ur$qt CASCADE;\n]
+ if $add_drop_table;
+ $create_statement .= qq[CREATE TABLE $qt$table_name_ur$qt (\n].
+ join( ",\n", map { " $_" } @field_defs, @constraint_defs ).
+ "\n);"
+ ;
+
+ $create_statement .= "\n" . join(";\n", @index_defs) . "\n";
+
+ return $create_statement, \@fks;
+}
+
+{
+
+ my %field_name_scope;
+
+ sub create_field
+ {
+ my ($field, $options) = @_;
+
+ my $qt = $options->{quote_table_names} || '';
+ my $qf = $options->{quote_field_names} || '';
+ my $table_name = $field->table->name;
+ my $constraint_defs = $options->{constraint_defs} || [];
+
+ $field_name_scope{$table_name} ||= {};
+ my $field_name = mk_name(
+ $field->name, '', $field_name_scope{$table_name}, 1
+ );
+ my $field_name_ur = $qf ? $field_name : unreserve($field_name, $table_name );
+ $field->name($field_name_ur);
+ my $field_comments = $field->comments
+ ? "-- " . $field->comments . "\n "
+ : '';
+
+ my $field_def = $field_comments.qq[$qf$field_name_ur$qf];
#
- # Other keys
+ # Datatype
#
- my @indices = @{ $table_data->{'indices'} || [] };
- for ( my $i = 0; $i <= $#indices; $i++ ) {
- $create .= ",\n";
- my $key = $indices[$i];
- my ( $name, $type, $fields ) = @{ $key }{ qw( name type fields ) };
- if ( $type eq 'primary_key' ) {
- $create .= " PRIMARY KEY (@{$fields})"
- }
- else {
- local $" = ", ";
- $create .= " KEY $name (@{$fields})"
- }
+ my @size = $field->size;
+ my $data_type = lc $field->data_type;
+ my %extra = $field->extra;
+ my $list = $extra{'list'} || [];
+ # todo deal with embedded quotes
+ my $commalist = join( ', ', map { qq['$_'] } @$list );
+ my $seq_name;
+
+ $field_def .= ' '. convert_datatype($field);
+
+ #
+ # Default value -- disallow for timestamps
+ #
+# my $default = $data_type =~ /(timestamp|date)/i
+# ? undef : $field->default_value;
+ my $default = $field->default_value;
+ if ( defined $default ) {
+ my $qd = "'";
+ $qd = '' if ($default eq 'now()' ||
+ $default eq 'CURRENT_TIMESTAMP');
+ $field_def .= sprintf( ' DEFAULT %s',
+ ( $field->is_auto_increment && $seq_name )
+ ? qq[nextval('"$seq_name"'::text)] :
+ ( $default =~ m/null/i ) ? 'NULL' : "$qd$default$qd"
+ );
}
#
- # Footer
+ # Not null constraint
#
- $create .= "\n);\n\n";
+ $field_def .= ' NOT NULL' unless $field->is_nullable;
+
+ return $field_def;
}
+}
+
+{
+ my %used_index_names;
+
+ sub create_index
+ {
+ my ($index, $options) = @_;
+
+ my $qt = $options->{quote_table_names} ||'';
+ my $qf = $options->{quote_field_names} ||'';
+ my $table_name = $index->table->name;
+# my $table_name_ur = $qt ? unreserve($table_name) : $table_name;
+
+ my ($index_def, @constraint_defs);
+
+ $used_index_names{$table_name} ||= {};
+ my $name = $index->name || '';
+ if ( $name ) {
+ $name = next_unused_name($name, $used_index_names{$table_name});
+ $used_index_names{$name} = $name;
+ }
+
+ my $type = $index->type || NORMAL;
+ my @fields =
+ map { $_ =~ s/\(.+\)//; $_ }
+ map { $qt ? $_ : unreserve($_, $table_name ) }
+ $index->fields;
+ next unless @fields;
+
+ my $def_start = qq[Constraint "$name" ];
+ if ( $type eq PRIMARY_KEY ) {
+ push @constraint_defs, "${def_start}PRIMARY KEY ".
+ '(' .$qf . join( $qf. ', '.$qf, @fields ) . $qf . ')';
+ }
+ elsif ( $type eq UNIQUE ) {
+ push @constraint_defs, "${def_start}UNIQUE " .
+ '(' . $qf . join( $qf. ', '.$qf, @fields ) . $qf.')';
+ }
+ elsif ( $type eq NORMAL ) {
+ $index_def =
+ "CREATE INDEX ${qf}${name}${qf} on ${qt}${table_name}${qt} (".
+ join( ', ', map { qq[$qf$_$qf] } @fields ).
+ ');'
+ ;
+ }
+ else {
+ warn "Unknown index type ($type) on table $table_name.\n"
+ if $WARN;
+ }
- return $create;
+ return $index_def, \@constraint_defs;
+ }
+
+ sub create_constraint
+ {
+ my ($c, $options) = @_;
+
+ my $qf = $options->{quote_field_names} ||'';
+ my $qt = $options->{quote_table_names} ||'';
+ my $table_name = $c->table->name;
+ my (@constraint_defs, @fks);
+
+ my $name = $c->name || '';
+ if ( $name ) {
+ $name = next_unused_name($name, \%used_index_names);
+ $used_index_names{$name} = $name;
+ }
+
+ my @fields =
+ map { $_ =~ s/\(.+\)//; $_ }
+ map { $qt ? $_ : unreserve( $_, $table_name )}
+ $c->fields;
+
+ my @rfields =
+ map { $_ =~ s/\(.+\)//; $_ }
+ map { $qt ? $_ : unreserve( $_, $table_name )}
+ $c->reference_fields;
+
+ next if !@fields && $c->type ne CHECK_C;
+ my $def_start = $name ? qq[Constraint "$name" ] : '';
+ if ( $c->type eq PRIMARY_KEY ) {
+ push @constraint_defs, "${def_start}PRIMARY KEY ".
+ '('.$qf . join( $qf.', '.$qf, @fields ) . $qf.')';
+ }
+ elsif ( $c->type eq UNIQUE ) {
+ $name = next_unused_name($name, \%used_index_names);
+ $used_index_names{$name} = $name;
+ push @constraint_defs, "${def_start}UNIQUE " .
+ '('.$qf . join( $qf.', '.$qf, @fields ) . $qf.')';
+ }
+ elsif ( $c->type eq CHECK_C ) {
+ my $expression = $c->expression;
+ push @constraint_defs, "${def_start}CHECK ($expression)";
+ }
+ elsif ( $c->type eq FOREIGN_KEY ) {
+ my $def .= "ALTER TABLE ${qt}${table_name}${qt} ADD FOREIGN KEY (" .
+ join( ', ', map { qq[$qf$_$qf] } @fields ) . ')' .
+ "\n REFERENCES " . $qt . $c->reference_table . $qt;
+
+ if ( @rfields ) {
+ $def .= ' ('.$qf . join( $qf.', '.$qf, @rfields ) . $qf.')';
+ }
+
+ if ( $c->match_type ) {
+ $def .= ' MATCH ' .
+ ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL';
+ }
+
+ if ( $c->on_delete ) {
+ $def .= ' ON DELETE '.join( ' ', $c->on_delete );
+ }
+
+ if ( $c->on_update ) {
+ $def .= ' ON UPDATE '.join( ' ', $c->on_update );
+ }
+
+ push @fks, "$def;";
+ }
+
+ return \@constraint_defs, \@fks;
+ }
}
-use Carp;
-sub debug {
- if ( $DEBUG ) {
- map { carp "[" . __PACKAGE__ . "] $_" } @_;
+sub convert_datatype
+{
+ my ($field) = @_;
+
+ my @size = $field->size;
+ my $data_type = lc $field->data_type;
+
+ if ( $data_type eq 'enum' ) {
+# my $len = 0;
+# $len = ($len < length($_)) ? length($_) : $len for (@$list);
+# my $chk_name = mk_name( $table_name.'_'.$field_name, 'chk' );
+# push @$constraint_defs,
+# qq[Constraint "$chk_name" CHECK ($qf$field_name$qf ].
+# qq[IN ($commalist))];
+ $data_type = 'character varying';
+ }
+ elsif ( $data_type eq 'set' ) {
+ $data_type = 'character varying';
+ }
+ elsif ( $field->is_auto_increment ) {
+ if ( defined $size[0] && $size[0] > 11 ) {
+ $data_type = 'bigserial';
+ }
+ else {
+ $data_type = 'serial';
+ }
+ undef @size;
+ }
+ else {
+ $data_type = defined $translate{ $data_type } ?
+ $translate{ $data_type } :
+ $data_type;
+ }
+
+ if ( $data_type =~ /timestamp/i ) {
+ if ( defined $size[0] && $size[0] > 6 ) {
+ $size[0] = 6;
+ }
+ }
+
+ if ( $data_type eq 'integer' ) {
+ if ( defined $size[0] && $size[0] > 0) {
+ if ( $size[0] > 10 ) {
+ $data_type = 'bigint';
+ }
+ elsif ( $size[0] < 5 ) {
+ $data_type = 'smallint';
+ }
+ else {
+ $data_type = 'integer';
+ }
+ }
+ else {
+ $data_type = 'integer';
+ }
}
+
+ #
+ # PG doesn't need a size for integers or text
+ #
+ undef @size if $data_type =~ m/(integer|smallint|bigint|text)/;
+
+ if ( defined $size[0] && $size[0] > 0 ) {
+ $data_type .= '(' . join( ',', @size ) . ')';
+ }
+ elsif (defined $size[0] && $data_type eq 'timestamp' ) {
+ $data_type .= '(' . join( ',', @size ) . ')';
+ }
+
+
+ return $data_type;
+}
+
+
+sub alter_field
+{
+ my ($from_field, $to_field) = @_;
+
+ die "Can't alter field in another table"
+ if($from_field->table->name ne $to_field->table->name);
+
+ my @out;
+ push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s SET NOT NULL;',
+ $to_field->table->name,
+ $to_field->name) if(!$to_field->is_nullable and
+ $from_field->is_nullable);
+
+ my $from_dt = convert_datatype($from_field);
+ my $to_dt = convert_datatype($to_field);
+ push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s TYPE %s;',
+ $to_field->table->name,
+ $to_field->name,
+ $to_dt) if($to_dt ne $from_dt);
+
+ push @out, sprintf('ALTER TABLE %s RENAME COLUMN %s TO %s;',
+ $to_field->table->name,
+ $from_field->name,
+ $to_field->name) if($from_field->name ne $to_field->name);
+
+ push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s SET DEFAULT %s;',
+ $to_field->table->name,
+ $to_field->name,
+ $to_field->default_value)
+ if(defined $to_field->default_value &&
+ $from_field->default_value ne $to_field->default_value);
+
+ return wantarray ? @out : join("\n", @out);
+
+}
+
+sub add_field
+{
+ my ($new_field) = @_;
+
+ my $out = sprintf('ALTER TABLE %s ADD COLUMN %s;',
+ $new_field->table->name,
+ create_field($new_field));
+ return $out;
+
+}
+
+sub drop_field
+{
+ my ($old_field) = @_;
+
+ my $out = sprintf('ALTER TABLE %s DROP COLUMN %s;',
+ $old_field->table->name,
+ $old_field->name);
+
+ return $out;
}
1;
-__END__
-=head1 NAME
+# -------------------------------------------------------------------
+# Life is full of misery, loneliness, and suffering --
+# and it's all over much too soon.
+# Woody Allen
+# -------------------------------------------------------------------
+
+=pod
+
+=head1 SEE ALSO
-SQL::Translator::Producer::PostgreSQL - PostgreSQL-specific producer for SQL::Translator
+SQL::Translator, SQL::Translator::Producer::Oracle.
=head1 AUTHOR
-Ken Y. Clark E<lt>kclark@cpan.orgE<gt>
+Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
=cut
projects / dbsrgits/SQL-Translator.git / blobdiff