package SQL::Translator::Producer::SQLite;
# -------------------------------------------------------------------
-# $Id: SQLite.pm,v 1.14 2006-07-23 14:03:52 schiffbruechige Exp $
+# $Id$
# -------------------------------------------------------------------
# Copyright (C) 2002-4 SQLFairy Authors
#
use vars qw[ $VERSION $DEBUG $WARN ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.14 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision$ =~ /(\d+)\.(\d+)/;
$DEBUG = 0 unless defined $DEBUG;
$WARN = 0 unless defined $WARN;
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;
debug("PKG: Beginning production\n");
- my $create = '';
- $create .= header_comment unless ($no_comments);
- $create .= "BEGIN TRANSACTION;\n\n";
+ my @create = ();
+ push @create, header_comment unless ($no_comments);
+ push @create, 'BEGIN TRANSACTION';
- my @table_defs = ();
for my $table ( $schema->get_tables ) {
- push @table_defs, create_table($table, { no_comment => $no_comments,
- add_drop_table => $add_drop_table,});
+ push @create, create_table($table, { no_comments => $no_comments,
+ sqlite_version => $sqlite_version,
+ add_drop_table => $add_drop_table,});
}
-# $create .= "COMMIT;\n";
+ for my $view ( $schema->get_views ) {
+ push @create, create_view($view, {
+ add_drop_view => $add_drop_table,
+ no_comments => $no_comments,
+ });
+ }
- return wantarray ? ($create, @table_defs, "COMMIT;\n") : join("\n", ($create, @table_defs, "COMMIT;\n"));
+ return wantarray ? (@create, "COMMIT") : join(";\n\n", (@create, "COMMIT;\n"));
}
# -------------------------------------------------------------------
: $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 ) {
return $name;
}
+sub create_view {
+ my ($view, $options) = @_;
+ my $add_drop_view = $options->{add_drop_view};
+
+ my $view_name = $view->name;
+ debug("PKG: Looking at view '${view_name}'\n");
+
+ # Header. Should this look like what mysqldump produces?
+ 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';
+ $create .= " IF NOT EXISTS" if exists($extra->{if_not_exists}) && $extra->{if_not_exists};
+ $create .= " ${view_name}";
+
+ if( my $sql = $view->sql ){
+ $create .= " AS\n ${sql}";
+ }
+ return $create;
+}
+
+
sub create_table
{
my ($table, $options) = @_;
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 @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 TABLE $table_name (\n";
+ my $exists = ($sqlite_version >= 3.3) ? ' IF EXISTS' : '';
+ my @create;
+ push @create, "--\n-- Table: $table_name\n--\n" unless $no_comments;
+ push @create, qq[DROP TABLE$exists $table_name] if $add_drop_table;
+ my $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;
+ $create_table .= "\n--\n\n";
}
#
push @constraint_defs, create_constraint($c);
}
- $create .= join(",\n", map { " $_" } @field_defs ) . "\n);\n";
-
- $create .= "\n";
+ $create_table .= join(",\n", map { " $_" } @field_defs ) . "\n)";
- for my $def ( @index_defs, @constraint_defs, @trigger_defs ) {
- $create .= "$def\n";
- }
- return $create;
+ return (@create, $create_table, @index_defs, @constraint_defs, @trigger_defs );
}
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 $field_def;
my ($index, $options) = @_;
my $name = $index->name;
- $name = mk_name($index->table->name, $name); # || ++$idx_name_default);
+ $name = mk_name($index->table->name, $name);
+
+ my $type = $index->type eq 'UNIQUE' ? "UNIQUE " : '';
# strip any field size qualifiers as SQLite doesn't like these
my @fields = map { s/\(\d+\)$//; $_ } $index->fields;
+ (my $index_table_name = $index->table->name) =~ s/^.+?\.//; # table name may not specify schema
+ warn "removing schema name from '" . $index->table->name . "' to make '$index_table_name'\n" if $WARN;
my $index_def =
- "CREATE INDEX $name on " . $index->table->name .
- ' (' . join( ', ', @fields ) . ');';
+ "CREATE ${type}INDEX $name ON " . $index_table_name .
+ ' (' . join( ', ', @fields ) . ')';
return $index_def;
}
my ($c, $options) = @_;
my $name = $c->name;
- $name = mk_name($c->table->name, $name); # || ++$idx_name_default);
+ $name = mk_name($c->table->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;
my $c_def =
- "CREATE UNIQUE INDEX $name on " . $c->table->name .
- ' (' . join( ', ', @fields ) . ');';
+ "CREATE UNIQUE INDEX $name ON " . $index_table_name .
+ ' (' . join( ', ', @fields ) . ')';
return $c_def;
}
+sub alter_table { } # Noop
+
+sub add_field {
+ my ($field) = @_;
+
+ return sprintf("ALTER TABLE %s ADD COLUMN %s",
+ $field->table->name, create_field($field))
+}
+
+sub alter_create_index {
+ my ($index) = @_;
+
+ # This might cause name collisions
+ return create_index($index);
+}
+
+sub alter_create_constraint {
+ my ($constraint) = @_;
+
+ return create_constraint($constraint) if $constraint->type eq 'UNIQUE';
+}
+
+sub alter_drop_constraint { alter_drop_index(@_) }
+
+sub alter_drop_index {
+ my ($constraint) = @_;
+
+ return sprintf("DROP INDEX %s",
+ $constraint->name);
+}
+
+sub batch_alter_table {
+ my ($table, $diffs) = @_;
+
+ # If we have any of the following
+ #
+ # rename_field
+ # alter_field
+ # drop_field
+ #
+ # we need to do the following <http://www.sqlite.org/faq.html#q11>
+ #
+ # BEGIN TRANSACTION;
+ # CREATE TEMPORARY TABLE t1_backup(a,b);
+ # INSERT INTO t1_backup SELECT a,b FROM t1;
+ # DROP TABLE t1;
+ # CREATE TABLE t1(a,b);
+ # INSERT INTO t1 SELECT a,b FROM t1_backup;
+ # DROP TABLE t1_backup;
+ # COMMIT;
+ #
+ # Fun, eh?
+ #
+ # If we have rename_field we do similarly.
+
+ my $table_name = $table->name;
+ my $renaming = $diffs->{rename_table} && @{$diffs->{rename_table}};
+
+ if ( @{$diffs->{rename_field}} == 0 &&
+ @{$diffs->{alter_field}} == 0 &&
+ @{$diffs->{drop_field}} == 0
+ ) {
+# return join("\n", map {
+ return map {
+ my $meth = __PACKAGE__->can($_) or die __PACKAGE__ . " cant $_";
+ map { my $sql = $meth->(ref $_ eq 'ARRAY' ? @$_ : $_); $sql ? ("$sql") : () } @{ $diffs->{$_} }
+
+ } grep { @{$diffs->{$_}} }
+ qw/rename_table
+ alter_drop_constraint
+ alter_drop_index
+ drop_field
+ add_field
+ alter_field
+ rename_field
+ alter_create_index
+ alter_create_constraint
+ alter_table/;
+ }
+
+
+ my @sql;
+ my $old_table = $renaming ? $diffs->{rename_table}[0][0] : $table;
+
+ do {
+ local $table->{name} = $table_name . '_temp_alter';
+ # We only want the table - dont care about indexes on tmp table
+ my ($table_sql) = create_table($table, {no_comments => 1, temporary_table => 1});
+ push @sql,$table_sql;
+ };
+
+ push @sql, "INSERT INTO @{[$table_name]}_temp_alter SELECT @{[ join(', ', $old_table->get_fields)]} FROM @{[$old_table]}",
+ "DROP TABLE @{[$old_table]}",
+ create_table($table, { no_comments => 1 }),
+ "INSERT INTO @{[$table_name]} SELECT @{[ join(', ', $old_table->get_fields)]} FROM @{[$table_name]}_temp_alter",
+ "DROP TABLE @{[$table_name]}_temp_alter";
+
+ return @sql;
+# return join("", @sql, "");
+}
+
+sub drop_table {
+ my ($table) = @_;
+ return "DROP TABLE $table";
+}
+
+sub rename_table {
+ my ($old_table, $new_table, $options) = @_;
+
+ my $qt = $options->{quote_table_names} || '';
+
+ return "ALTER TABLE $qt$old_table$qt RENAME TO $qt$new_table$qt";
+
+}
+
+# No-op. Just here to signify that we are a new style parser.
+sub preproces_schema { }
+
1;
=pod
=head1 AUTHOR
-Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
+Ken Y. Clark C<< <kclark@cpan.orgE> >>.
+
+Diff code added by Ash Berlin C<< <ash@cpan.org> >>.
=cut