package SQL::Translator::Producer::SQLite;
-# -------------------------------------------------------------------
-# 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
-# published by the Free Software Foundation; version 2.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA
-# -------------------------------------------------------------------
-
=head1 NAME
SQL::Translator::Producer::SQLite - SQLite producer for SQL::Translator
use warnings;
use Data::Dumper;
use SQL::Translator::Schema::Constants;
-use SQL::Translator::Utils qw(debug header_comment parse_dbms_version);
-
-use vars qw[ $VERSION $DEBUG $WARN ];
+use SQL::Translator::Utils qw(debug header_comment parse_dbms_version batch_alter_table_statements);
+use SQL::Translator::Generator::DDL::SQLite;
-$VERSION = '1.59';
+our ( $DEBUG, $WARN );
+our $VERSION = '1.59';
$DEBUG = 0 unless defined $DEBUG;
$WARN = 0 unless defined $WARN;
our $max_id_length = 30;
my %global_names;
+# HIDEOUS TEMPORARY DEFAULT WITHOUT QUOTING!
+our $NO_QUOTES = 1;
+{
+
+ my ($quoting_generator, $nonquoting_generator);
+ sub _generator {
+ $NO_QUOTES
+ ? $nonquoting_generator ||= SQL::Translator::Generator::DDL::SQLite->new(quote_chars => [])
+ : $quoting_generator ||= SQL::Translator::Generator::DDL::SQLite->new
+ }
+}
+
sub produce {
my $translator = shift;
local $DEBUG = $translator->debug;
%global_names = (); #reset
+ # only quote if quotes were requested for real
+ # 0E0 indicates "the default of true" was assumed
+ local $NO_QUOTES = 0
+ if $translator->quote_identifiers and $translator->quote_identifiers ne '0E0';
my $head = (header_comment() . "\n") unless $no_comments;
}
}
-# -------------------------------------------------------------------
sub mk_name {
my ($name, $scope, $critical) = @_;
if ( my $prev = $scope->{ $name } ) {
my $name_orig = $name;
$name .= sprintf( "%02d", ++$prev );
- substr($name, $max_id_length - 3) = "00"
+ substr($name, $max_id_length - 3) = "00"
if length( $name ) > $max_id_length;
warn "The name '$name_orig' has been changed to ",
}
$scope->{ $name }++;
- return $name;
+ return _generator()->quote($name);
}
sub create_view {
my ($view, $options) = @_;
my $add_drop_view = $options->{add_drop_view};
- my $view_name = $view->name;
+ my $view_name = _generator()->quote($view->name);
+ $global_names{$view->name} = 1;
+
debug("PKG: Looking at view '${view_name}'\n");
# Header. Should this look like what mysqldump produces?
{
my ($table, $options) = @_;
- my $table_name = $table->name;
+ my $table_name = _generator()->quote($table->name);
+ $global_names{$table->name} = 1;
+
my $no_comments = $options->{no_comments};
my $add_drop_table = $options->{add_drop_table};
my $sqlite_version = $options->{sqlite_version} || 0;
push @field_defs, create_field($field);
}
- if (
- scalar @pk_fields > 1
- ||
- ( @pk_fields && !grep /INTEGER PRIMARY KEY/, @field_defs )
+ if (
+ scalar @pk_fields > 1
+ ||
+ ( @pk_fields && !grep /INTEGER PRIMARY KEY/, @field_defs )
) {
- push @field_defs, 'PRIMARY KEY (' . join(', ', @pk_fields ) . ')';
+ push @field_defs, 'PRIMARY KEY (' . join(', ', map _generator()->quote($_), @pk_fields ) . ')';
}
#
# Indices
#
- my $idx_name_default = 'A';
for my $index ( $table->get_indices ) {
push @index_defs, create_index($index);
}
#
# Constraints
#
- my $c_name_default = 'A';
for my $c ( $table->get_constraints ) {
if ($c->type eq "FOREIGN KEY") {
push @field_defs, create_foreignkey($c);
}
- next unless $c->type eq UNIQUE;
+ elsif ($c->type eq "CHECK") {
+ push @field_defs, create_check_constraint($c);
+ }
+ next unless $c->type eq UNIQUE;
push @constraint_defs, create_constraint($c);
}
return (@create, $create_table, @index_defs, @constraint_defs );
}
-sub create_foreignkey {
- my $c = shift;
-
- my $fk_sql = "FOREIGN KEY(".$c->{fields}[0].") REFERENCES ";
- $fk_sql .= $c->{reference_table}."(".$c->{reference_fields}[0].")";
-
- return $fk_sql;
+sub create_check_constraint {
+ my $c = shift;
+ my $check = '';
+ $check .= 'CONSTRAINT ' . _generator->quote( $c->name ) . ' ' if $c->name;
+ $check .= 'CHECK(' . $c->expression . ')';
+ return $check;
}
-sub create_field
-{
- my ($field, $options) = @_;
-
- my $field_name = $field->name;
- debug("PKG: Looking at field '$field_name'\n");
- my $field_comments = $field->comments
- ? "-- " . $field->comments . "\n "
- : '';
-
- my $field_def = $field_comments.$field_name;
-
- # data type and size
- my $size = $field->size;
- my $data_type = $field->data_type;
- $data_type = 'varchar' if lc $data_type eq 'set';
- $data_type = 'blob' if lc $data_type eq 'bytea';
-
- if ( lc $data_type =~ /(text|blob)/i ) {
- $size = undef;
- }
-
-# if ( $data_type =~ /timestamp/i ) {
-# push @trigger_defs,
-# "CREATE TRIGGER ts_${table_name} ".
-# "after insert on $table_name\n".
-# "begin\n".
-# " update $table_name set $field_name=timestamp() ".
-# "where id=new.id;\n".
-# "end;\n"
-# ;
-#
-# }
-
- #
- # SQLite is generally typeless, but newer versions will
- # make a field autoincrement if it is declared as (and
- # *only* as) INTEGER PRIMARY KEY
- #
- my $pk = $field->table->primary_key;
- my @pk_fields = $pk ? $pk->fields : ();
+sub create_foreignkey {
+ my $c = shift;
- if (
- $field->is_primary_key &&
- scalar @pk_fields == 1 &&
- (
- $data_type =~ /int(eger)?$/i
- ||
- ( $data_type =~ /^number?$/i && $size !~ /,/ )
- )
- ) {
- $data_type = 'INTEGER PRIMARY KEY';
- $size = undef;
-# $pk_set = 1;
+ my @fields = $c->fields;
+ my @rfields = map { $_ || () } $c->reference_fields;
+ unless ( @rfields ) {
+ my $rtable_name = $c->reference_table;
+ if ( my $ref_table = $c->schema->get_table( $rtable_name ) ) {
+ push @rfields, $ref_table->primary_key;
+
+ die "FK constraint on " . $rtable_name . '.' . join('', @fields) . " has no reference fields\n"
+ unless @rfields;
+ }
+ else {
+ die "Can't find reference table '$rtable_name' in schema\n";
+ }
}
- $field_def .= sprintf " %s%s", $data_type,
- ( !$field->is_auto_increment && $size ) ? "($size)" : '';
-
- # Null?
- $field_def .= ' NOT NULL' unless $field->is_nullable;
-
- # Default?
- SQL::Translator::Producer->_apply_default_value(
- $field,
- \$field_def,
- [
- 'NULL' => \'NULL',
- 'now()' => 'now()',
- 'CURRENT_TIMESTAMP' => 'CURRENT_TIMESTAMP',
- ],
- );
+ my $fk_sql = sprintf 'FOREIGN KEY (%s) REFERENCES %s(%s)',
+ join (', ', map { _generator()->quote($_) } @fields ),
+ _generator()->quote($c->reference_table),
+ join (', ', map { _generator()->quote($_) } @rfields )
+ ;
- return $field_def;
+ $fk_sql .= " ON DELETE " . $c->{on_delete} if $c->{on_delete};
+ $fk_sql .= " ON UPDATE " . $c->{on_update} if $c->{on_update};
+ return $fk_sql;
}
+sub create_field { return _generator()->field($_[0]) }
+
sub create_index
{
my ($index, $options) = @_;
- my $name = $index->name;
- $name = mk_name($name);
+ (my $index_table_name = $index->table->name) =~ s/^.+?\.//; # table name may not specify schema
+ my $name = mk_name($index->name || "${index_table_name}_idx");
- my $type = $index->type eq 'UNIQUE' ? "UNIQUE " : '';
+ 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
+ my @fields = map { s/\(\d+\)$//; _generator()->quote($_) } $index->fields;
+ $index_table_name = _generator()->quote($index_table_name);
warn "removing schema name from '" . $index->table->name . "' to make '$index_table_name'\n" if $WARN;
- my $index_def =
+ my $index_def =
"CREATE ${type}INDEX $name ON " . $index_table_name .
' (' . join( ', ', @fields ) . ')';
{
my ($c, $options) = @_;
- my $name = $c->name;
- $name = mk_name($name);
- my @fields = $c->fields;
(my $index_table_name = $c->table->name) =~ s/^.+?\.//; # table name may not specify schema
+ my $name = mk_name($c->name || "${index_table_name}_idx");
+ my @fields = map _generator()->quote($_), $c->fields;
+ $index_table_name = _generator()->quote($index_table_name);
warn "removing schema name from '" . $c->table->name . "' to make '$index_table_name'\n" if $WARN;
- my $c_def =
+ my $c_def =
"CREATE UNIQUE INDEX $name ON " . $index_table_name .
' (' . join( ', ', @fields ) . ')';
my @statements;
my $trigger_name = $trigger->name;
+ $global_names{$trigger_name} = 1;
+
my $events = $trigger->database_events;
for my $evt ( @$events ) {
"creating trigger '$trig_name' for the '$evt' event.\n" if $WARN;
}
+ $trig_name = _generator()->quote($trig_name);
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";
+ $action = $trigger->action;
+ $action = "BEGIN " . $action . " END"
+ unless $action =~ /^ \s* BEGIN [\s\;] .*? [\s\;] END [\s\;]* $/six;
}
else {
$action = $trigger->action->{for_each} . " "
$trig_name,
$trigger->perform_action_when,
$evt,
- $trigger->on_table,
+ _generator()->quote($trigger->on_table),
$action
);
}
return @statements;
}
-sub alter_table { } # Noop
+sub alter_table { () } # Noop
sub add_field {
my ($field) = @_;
return sprintf("ALTER TABLE %s ADD COLUMN %s",
- $field->table->name, create_field($field))
+ _generator()->quote($field->table->name), create_field($field))
}
sub alter_create_index {
my ($constraint) = @_;
return sprintf("DROP INDEX %s",
- $constraint->name);
+ _generator()->quote($constraint->name));
}
sub batch_alter_table {
- my ($table, $diffs) = @_;
+ my ($table, $diffs, $options) = @_;
# If we have any of the following
#
# Fun, eh?
#
# If we have rename_field we do similarly.
+ #
+ # We create the temporary table as a copy of the new table, copy all data
+ # to temp table, create new table and then copy as appropriate taking note
+ # of renamed fields.
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/;
+ return batch_alter_table_statements($diffs, $options);
}
-
my @sql;
- my $old_table = $renaming ? $diffs->{rename_table}[0][0] : $table;
-
+
+ # $table is the new table but we may need an old one
+ # TODO: this is NOT very well tested at the moment so add more tests
+
+ my $old_table = $table;
+
+ if ( $diffs->{rename_table} && @{$diffs->{rename_table}} ) {
+ $old_table = $diffs->{rename_table}[0][0];
+ }
+
+ my $temp_table_name = $table_name . '_temp_alter';
+
+ # CREATE TEMPORARY TABLE t1_backup(a,b);
+
+ my %temp_table_fields;
do {
- local $table->{name} = $table_name . '_temp_alter';
- # We only want the table - dont care about indexes on tmp table
+ local $table->{name} = $temp_table_name;
+ # We only want the table - don't care about indexes on tmp table
my ($table_sql) = create_table($table, {no_comments => 1, temporary_table => 1});
push @sql,$table_sql;
+
+ %temp_table_fields = map { $_ => 1} $table->get_fields;
};
- push @sql, "INSERT INTO @{[$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";
+ # record renamed fields for later
+ my %rename_field = map { $_->[1]->name => $_->[0]->name } @{$diffs->{rename_field}};
+
+ # drop added fields from %temp_table_fields
+ delete @temp_table_fields{@{$diffs->{add_field}}};
+
+ # INSERT INTO t1_backup SELECT a,b FROM t1;
+
+ push @sql, sprintf( 'INSERT INTO %s( %s) SELECT %s FROM %s',
+
+ _generator()->quote( $temp_table_name ),
+
+ join( ', ',
+ map _generator()->quote($_),
+ grep { $temp_table_fields{$_} } $table->get_fields ),
+
+ join( ', ',
+ map _generator()->quote($_),
+ map { $rename_field{$_} ? $rename_field{$_} : $_ }
+ grep { $temp_table_fields{$_} } $table->get_fields ),
+
+ _generator()->quote( $old_table->name )
+ );
+
+ # DROP TABLE t1;
+
+ push @sql, sprintf('DROP TABLE %s', _generator()->quote($old_table->name));
+
+ # CREATE TABLE t1(a,b);
+
+ push @sql, create_table($table, { no_comments => 1 });
+
+ # INSERT INTO t1 SELECT a,b FROM t1_backup;
+
+ push @sql, sprintf('INSERT INTO %s SELECT %s FROM %s',
+ _generator()->quote($table_name),
+ join(', ', map _generator()->quote($_), $table->get_fields),
+ _generator()->quote($temp_table_name)
+ );
+
+ # DROP TABLE t1_backup;
+
+ push @sql, sprintf('DROP TABLE %s', _generator()->quote($temp_table_name));
- return @sql;
-# return join("", @sql, "");
+ return wantarray ? @sql : join(";\n", @sql);
}
sub drop_table {
my ($table) = @_;
+ $table = _generator()->quote($table);
return "DROP TABLE $table";
}
sub rename_table {
my ($old_table, $new_table, $options) = @_;
- my $qt = $options->{quote_table_names} || '';
+ $old_table = _generator()->quote($old_table);
+ $new_table = _generator()->quote($new_table);
- return "ALTER TABLE $qt$old_table$qt RENAME TO $qt$new_table$qt";
+ return "ALTER TABLE $old_table RENAME TO $new_table";
}
projects / dbsrgits/SQL-Translator.git / blobdiff