X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator%2FProducer%2FSQLite.pm;h=d03112cb085650edfe49de109c85c0a10eeafd1d;hb=ba506e52c480afe33dfec6b38a12759fad1e7fa2;hp=eea69c4146403bd7cfdc57fb53c48115e76b309c;hpb=ec59a59706d3aede26dbdcfec8e3ba5d64e2d8f7;p=dbsrgits%2FSQL-Translator.git diff --git a/lib/SQL/Translator/Producer/SQLite.pm b/lib/SQL/Translator/Producer/SQLite.pm index eea69c4..d03112c 100644 --- a/lib/SQL/Translator/Producer/SQLite.pm +++ b/lib/SQL/Translator/Producer/SQLite.pm @@ -1,9 +1,7 @@ package SQL::Translator::Producer::SQLite; # ------------------------------------------------------------------- -# $Id: SQLite.pm,v 1.15 2006-08-26 11:35:31 schiffbruechige 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 @@ -38,20 +36,20 @@ This module will produce text output of the schema suitable for SQLite. =cut use strict; +use warnings; use Data::Dumper; use SQL::Translator::Schema::Constants; use SQL::Translator::Utils qw(debug header_comment); +use Readonly; use vars qw[ $VERSION $DEBUG $WARN ]; -$VERSION = sprintf "%d.%02d", q$Revision: 1.15 $ =~ /(\d+)\.(\d+)/; -$DEBUG = 0 unless defined $DEBUG; -$WARN = 0 unless defined $WARN; +$VERSION = '1.60'; +$DEBUG = 0 if !defined $DEBUG; +$WARN = 0 if !defined $WARN; -my %used_identifiers = (); -my $max_id_length = 30; +Readonly my $MAX_ID_LENGTH => 30; my %global_names; -my %truncated; sub produce { my $translator = shift; @@ -60,56 +58,57 @@ sub produce { my $no_comments = $translator->no_comments; my $add_drop_table = $translator->add_drop_table; my $schema = $translator->schema; + my $producer_args = $translator->producer_args; + my $sqlite_version = $producer_args->{sqlite_version} || 0; + my $no_txn = $producer_args->{no_transaction}; debug("PKG: Beginning production\n"); - my $create = ''; - $create .= header_comment unless ($no_comments); - $create .= "BEGIN TRANSACTION;\n\n"; + %global_names = (); #reset + + my @create = (); + push @create, header_comment unless ($no_comments); + $create[0] .= "\n\nBEGIN TRANSACTION" unless $no_txn; - my @table_defs = (); for my $table ( $schema->get_tables ) { - my @defs = create_table($table, { no_comments => $no_comments, + push @create, create_table($table, { no_comments => $no_comments, + sqlite_version => $sqlite_version, add_drop_table => $add_drop_table,}); - my $create = shift @defs; - $create .= ";\n"; - push @table_defs, $create, map( { "$_;" } @defs), ""; } for my $view ( $schema->get_views ) { - push @table_defs, create_view($view, {no_comments => $no_comments,}); + push @create, create_view($view, { + add_drop_view => $add_drop_table, + no_comments => $no_comments, + }); } -# $create .= "COMMIT;\n"; + for my $trigger ( $schema->get_triggers ) { + push @create, create_trigger($trigger, { + add_drop_trigger => $add_drop_table, + no_comments => $no_comments, + }); + } - return wantarray ? ($create, @table_defs, "COMMIT;\n") : join("\n", ($create, @table_defs, "COMMIT;\n")); + if (wantarray) { + push @create, "COMMIT" unless $no_txn; + return @create; + } else { + push @create, "COMMIT;\n" unless $no_txn; + return join(";\n\n", @create ); + } } # ------------------------------------------------------------------- sub mk_name { - my ($basename, $type, $scope, $critical) = @_; - 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; - $basename =~ s/\./_/g; - 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 } = $name; - } + my ($name, $scope, $critical) = @_; $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 - 3) = "00" + if length( $name ) > $MAX_ID_LENGTH; warn "The name '$name_orig' has been changed to ", "'$name' to make it unique.\n" if $WARN; @@ -123,6 +122,7 @@ sub mk_name { sub create_view { my ($view, $options) = @_; + my $add_drop_view = $options->{add_drop_view}; my $view_name = $view->name; debug("PKG: Looking at view '${view_name}'\n"); @@ -131,6 +131,7 @@ sub create_view { my $extra = $view->extra; my $create = ''; $create .= "--\n-- View: ${view_name}\n--\n" unless $options->{no_comments}; + $create .= "DROP VIEW IF EXISTS $view_name;\n" if $add_drop_view; $create .= 'CREATE'; $create .= " TEMPORARY" if exists($extra->{temporary}) && $extra->{temporary}; $create .= ' VIEW'; @@ -138,9 +139,8 @@ sub create_view { $create .= " ${view_name}"; if( my $sql = $view->sql ){ - $create .= " AS (\n ${sql}\n )"; + $create .= " AS\n ${sql}"; } - $create .= ";\n\n"; return $create; } @@ -152,28 +152,36 @@ sub create_table my $table_name = $table->name; my $no_comments = $options->{no_comments}; my $add_drop_table = $options->{add_drop_table}; + my $sqlite_version = $options->{sqlite_version} || 0; debug("PKG: Looking at table '$table_name'\n"); - my ( @index_defs, @constraint_defs, @trigger_defs ); + my ( @index_defs, @constraint_defs ); my @fields = $table->get_fields or die "No fields in $table_name"; my $temp = $options->{temporary_table} ? 'TEMPORARY ' : ''; # # Header. # - my $create = ''; - $create .= "--\n-- Table: $table_name\n--\n" unless $no_comments; - $create .= qq[DROP TABLE $table_name;\n] if $add_drop_table; - $create .= "CREATE ${temp}TABLE $table_name (\n"; + my $exists = ($sqlite_version >= 3.3) ? ' IF EXISTS' : ''; + my @create; + my ($comment, $create_table) = ""; + $comment = "--\n-- Table: $table_name\n--\n" unless $no_comments; + if ($add_drop_table) { + push @create, $comment . qq[DROP TABLE$exists $table_name]; + } else { + $create_table = $comment; + } + + $create_table .= "CREATE ${temp}TABLE $table_name (\n"; # # Comments # if ( $table->comments and !$no_comments ){ - $create .= "-- Comments: \n-- "; - $create .= join "\n-- ", $table->comments; - $create .= "\n--\n\n"; + $create_table .= "-- Comments: \n-- "; + $create_table .= join "\n-- ", $table->comments; + $create_table .= "\n--\n\n"; } # @@ -215,9 +223,9 @@ sub create_table push @constraint_defs, create_constraint($c); } - $create .= join(",\n", map { " $_" } @field_defs ) . "\n)"; + $create_table .= join(",\n", map { " $_" } @field_defs ) . "\n)"; - return ($create, @index_defs, @constraint_defs, @trigger_defs ); + return (@create, $create_table, @index_defs, @constraint_defs ); } sub create_field @@ -284,17 +292,16 @@ sub create_field # Default? XXX Need better quoting! my $default = $field->default_value; - if ( defined $default ) { - if ( uc $default eq 'NULL') { - $field_def .= ' DEFAULT NULL'; - } elsif ( $default eq 'now()' || - $default eq 'CURRENT_TIMESTAMP' ) { - $field_def .= ' DEFAULT CURRENT_TIMESTAMP'; - } elsif ( $default =~ /val\(/ ) { - next; - } else { - $field_def .= " DEFAULT '$default'"; - } + if (defined $default) { + SQL::Translator::Producer->_apply_default_value( + \$field_def, + $default, + [ + 'NULL' => \'NULL', + 'now()' => 'now()', + 'CURRENT_TIMESTAMP' => 'CURRENT_TIMESTAMP', + ], + ); } return $field_def; @@ -306,7 +313,7 @@ sub create_index my ($index, $options) = @_; my $name = $index->name; - $name = mk_name($index->table->name, $name); + $name = mk_name($name); my $type = $index->type eq 'UNIQUE' ? "UNIQUE " : ''; @@ -326,7 +333,7 @@ sub create_constraint my ($c, $options) = @_; my $name = $c->name; - $name = mk_name($c->table->name, $name); + $name = mk_name($name); my @fields = $c->fields; (my $index_table_name = $c->table->name) =~ s/^.+?\.//; # table name may not specify schema warn "removing schema name from '" . $c->table->name . "' to make '$index_table_name'\n" if $WARN; @@ -338,6 +345,59 @@ sub create_constraint return $c_def; } +sub create_trigger { + my ($trigger, $options) = @_; + my $add_drop = $options->{add_drop_trigger}; + + my @statements; + + my $trigger_name = $trigger->name; + my $events = $trigger->database_events; + for my $evt ( @$events ) { + + my $trig_name = $trigger_name; + if (@$events > 1) { + $trig_name .= "_$evt"; + + warn "Multiple database events supplied for trigger '$trigger_name', ", + "creating trigger '$trig_name' for the '$evt' event.\n" if $WARN; + } + + push @statements, "DROP TRIGGER IF EXISTS $trig_name" if $add_drop; + + + $DB::single = 1; + my $action = ""; + if (not ref $trigger->action) { + $action .= "BEGIN " . $trigger->action . " END"; + } + else { + $action = $trigger->action->{for_each} . " " + if $trigger->action->{for_each}; + + $action = $trigger->action->{when} . " " + if $trigger->action->{when}; + + my $steps = $trigger->action->{steps} || []; + + $action .= "BEGIN "; + $action .= $_ . "; " for (@$steps); + $action .= "END"; + } + + push @statements, sprintf ( + 'CREATE TRIGGER %s %s %s on %s %s', + $trig_name, + $trigger->perform_action_when, + $evt, + $trigger->on_table, + $action + ); + } + + return @statements; +} + sub alter_table { } # Noop sub add_field { @@ -400,9 +460,10 @@ sub batch_alter_table { @{$diffs->{alter_field}} == 0 && @{$diffs->{drop_field}} == 0 ) { - return join("\n", map { +# return join("\n", map { + return map { my $meth = __PACKAGE__->can($_) or die __PACKAGE__ . " cant $_"; - map { my $sql = $meth->(ref $_ eq 'ARRAY' ? @$_ : $_); $sql ? ("$sql;") : () } @{ $diffs->{$_} } + map { my $sql = $meth->(ref $_ eq 'ARRAY' ? @$_ : $_); $sql ? ("$sql") : () } @{ $diffs->{$_} } } grep { @{$diffs->{$_}} } qw/rename_table @@ -414,7 +475,7 @@ sub batch_alter_table { rename_field alter_create_index alter_create_constraint - alter_table/); + alter_table/; } @@ -434,12 +495,13 @@ sub batch_alter_table { "INSERT INTO @{[$table_name]} SELECT @{[ join(', ', $old_table->get_fields)]} FROM @{[$table_name]}_temp_alter", "DROP TABLE @{[$table_name]}_temp_alter"; - return join(";\n", @sql, ""); + return @sql; +# return join("", @sql, ""); } sub drop_table { my ($table) = @_; - return "DROP TABLE $table;"; + return "DROP TABLE $table"; } sub rename_table { @@ -464,7 +526,7 @@ SQL::Translator, http://www.sqlite.org/. =head1 AUTHOR -Ken Y. Clark C<< >>. +Ken Youens-Clark Ekclark@cpan.orgE. Diff code added by Ash Berlin C<< >>.