[dbsrgits/SQL-Translator.git] / lib / SQL / Translator / Parser / Access.pm

package SQL::Translator::Parser::Access;

# -------------------------------------------------------------------
# $Id: Access.pm,v 1.2 2004-07-30 21:56:18 kycl4rk Exp $
# -------------------------------------------------------------------
# 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
# 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::Parser::Access - parser for Access as produced by mdbtools

=head1 SYNOPSIS

  use SQL::Translator;
  use SQL::Translator::Parser::Access;

  my $translator = SQL::Translator->new;
  $translator->parser("SQL::Translator::Parser::Access");

=head1 DESCRIPTION

The grammar derived from the MySQL grammar.  The input is expected to be 
something similar to the output of mdbtools (http://mdbtools.sourceforge.net/).

=cut

use strict;
use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ];
$VERSION = sprintf "%d.%02d", q$Revision: 1.2 $ =~ /(\d+)\.(\d+)/;
$DEBUG   = 0 unless defined $DEBUG;

use Data::Dumper;
use Parse::RecDescent;
use Exporter;
use base qw(Exporter);

@EXPORT_OK = qw(parse);

# Enable warnings within the Parse::RecDescent module.
$::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error
$::RD_WARN   = 1; # Enable warnings. This will warn on unused rules &c.
$::RD_HINT   = 1; # Give out hints to help fix problems.

$GRAMMAR = q!

{ 
    my ( %tables, $table_order, @table_comments );
}

#
# The "eofile" rule makes the parser fail if any "statement" rule
# fails.  Otherwise, the first successful match by a "statement" 
# won't cause the failure needed to know that the parse, as a whole,
# failed. -ky
#
startrule : statement(s) eofile { \%tables }

eofile : /^\Z/

statement : comment
    | use
    | set
    | drop
    | create
    | <error>

use : /use/i WORD ';'
    { @table_comments = () }

set : /set/i /[^;]+/ ';'
    { @table_comments = () }

drop : /drop/i TABLE /[^;]+/ ';'

drop : /drop/i WORD(s) ';'
    { @table_comments = () }

create : CREATE /database/i WORD ';'
    { @table_comments = () }

create : CREATE TABLE table_name '(' create_definition(s /,/) ')' ';'
    { 
        my $table_name                       = $item{'table_name'};
        $tables{ $table_name }{'order'}      = ++$table_order;
        $tables{ $table_name }{'table_name'} = $table_name;

        if ( @table_comments ) {
            $tables{ $table_name }{'comments'} = [ @table_comments ];
            @table_comments = ();
        }

        my $i = 1;
        for my $definition ( @{ $item[5] } ) {
            if ( $definition->{'supertype'} eq 'field' ) {
                my $field_name = $definition->{'name'};
                $tables{ $table_name }{'fields'}{ $field_name } = 
                    { %$definition, order => $i };
                $i++;
        
                if ( $definition->{'is_primary_key'} ) {
                    push @{ $tables{ $table_name }{'constraints'} },
                        {
                            type   => 'primary_key',
                            fields => [ $field_name ],
                        }
                    ;
                }
            }
            elsif ( $definition->{'supertype'} eq 'constraint' ) {
                push @{ $tables{ $table_name }{'constraints'} }, $definition;
            }
            elsif ( $definition->{'supertype'} eq 'index' ) {
                push @{ $tables{ $table_name }{'indices'} }, $definition;
            }
        }

        1;
    }

create : CREATE UNIQUE(?) /(index|key)/i index_name /on/i table_name '(' field_name(s /,/) ')' ';'
    {
        @table_comments = ();
        push @{ $tables{ $item{'table_name'} }{'indices'} },
            {
                name   => $item[4],
                type   => $item[2] ? 'unique' : 'normal',
                fields => $item[8],
            }
        ;
    }

create_definition : constraint 
    | index
    | field
    | comment
    | <error>

comment : /^\s*--(.*)\n/ 
    { 
        my $comment =  $1;
        $return     = $comment;
        push @table_comments, $comment;
    }

field : field_name data_type field_qualifier(s?) reference_definition(?)
    { 
        $return = { 
            supertype   => 'field',
            name        => $item{'field_name'}, 
            data_type   => $item{'data_type'}{'type'},
            size        => $item{'data_type'}{'size'},
            constraints => $item{'reference_definition(?)'},
        } 
    }
    | <error>

field_qualifier : not_null
    { 
        $return = { 
             null => $item{'not_null'},
        } 
    }

field_qualifier : default_val
    { 
        $return = { 
             default => $item{'default_val'},
        } 
    }

field_qualifier : auto_inc
    { 
        $return = { 
             is_auto_inc => $item{'auto_inc'},
        } 
    }

field_qualifier : primary_key
    { 
        $return = { 
             is_primary_key => $item{'primary_key'},
        } 
    }

field_qualifier : unsigned
    { 
        $return = { 
             is_unsigned => $item{'unsigned'},
        } 
    }

field_qualifier : /character set/i WORD
    {
        $return = {
            character_set => $item[2],
        }
    }

reference_definition : /references/i table_name parens_field_list(?) match_type(?) on_delete_do(?) on_update_do(?)
    {
        $return = {
            type             => 'foreign_key',
            reference_table  => $item[2],
            reference_fields => $item[3][0],
            match_type       => $item[4][0],
            on_delete_do     => $item[5][0],
            on_update_do     => $item[6][0],
        }
    }

match_type : /match full/i { 'full' }
    |
    /match partial/i { 'partial' }

on_delete_do : /on delete/i reference_option
    { $item[2] }

on_update_do : /on update/i reference_option
    { $item[2] }

reference_option: /restrict/i | 
    /cascade/i   | 
    /set null/i  | 
    /no action/i | 
    /set default/i
    { $item[1] }  

index : normal_index
    | fulltext_index
    | <error>

table_name   : NAME

field_name   : NAME

index_name   : NAME

data_type    : access_data_type parens_value_list(s?) type_qualifier(s?)
    { 
        $return        = { 
            type       => $item[1],
            size       => $item[2][0],
            qualifiers => $item[3],
        } 
    }

access_data_type : /long integer/i { $return = 'Long Integer' }
    | /text/i { $return = 'Text' }
    | /datetime (\(short\))?/i { $return = 'DateTime' }
    | /boolean/i { $return = 'Boolean' }
    | WORD

parens_field_list : '(' field_name(s /,/) ')'
    { $item[2] }

parens_value_list : '(' VALUE(s /,/) ')'
    { $item[2] }

type_qualifier : /(BINARY|UNSIGNED|ZEROFILL)/i
    { lc $item[1] }

field_type   : WORD

create_index : /create/i /index/i

not_null     : /not/i /null/i { $return = 0 }

unsigned     : /unsigned/i { $return = 0 }

default_val : /default/i /'(?:.*?\\')*.*?'|(?:')?[\w\d:.-]*(?:')?/
    {
        $item[2] =~ s/^\s*'|'\s*$//g;
        $return  =  $item[2];
    }

auto_inc : /auto_increment/i { 1 }

primary_key : /primary/i /key/i { 1 }

constraint : primary_key_def
    | unique_key_def
    | foreign_key_def
    | <error>

foreign_key_def : foreign_key_def_begin parens_field_list reference_definition
    {
        $return              =  {
            supertype        => 'constraint',
            type             => 'foreign_key',
            name             => $item[1],
            fields           => $item[2],
            %{ $item{'reference_definition'} },
        }
    }

foreign_key_def_begin : /constraint/i /foreign key/i 
    { $return = '' }
    |
    /constraint/i WORD /foreign key/i
    { $return = $item[2] }
    |
    /foreign key/i
    { $return = '' }

primary_key_def : primary_key index_name(?) '(' name_with_opt_paren(s /,/) ')'
    { 
        $return       = { 
            supertype => 'constraint',
            name      => $item{'index_name(?)'}[0],
            type      => 'primary_key',
            fields    => $item[4],
        };
    }

unique_key_def : UNIQUE KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')'
    { 
        $return       = { 
            supertype => 'constraint',
            name      => $item{'index_name(?)'}[0],
            type      => 'unique',
            fields    => $item[5],
        } 
    }

normal_index : KEY index_name(?) '(' name_with_opt_paren(s /,/) ')'
    { 
        $return       = { 
            supertype => 'index',
            type      => 'normal',
            name      => $item{'index_name(?)'}[0],
            fields    => $item[4],
        } 
    }

fulltext_index : /fulltext/i KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')'
    { 
        $return       = { 
            supertype => 'index',
            type      => 'fulltext',
            name      => $item{'index_name(?)'}[0],
            fields    => $item[5],
        } 
    }

name_with_opt_paren : NAME parens_value_list(s?)
    { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] }

UNIQUE : /unique/i { 1 }

KEY : /key/i | /index/i

table_option : WORD /\s*=\s*/ WORD
    { 
        $return = { $item[1] => $item[3] };
    }

CREATE : /create/i

TEMPORARY : /temporary/i

TABLE : /table/i

WORD : /\w+/

DIGITS : /\d+/

COMMA : ','

NAME    : "`" /\w+/ "`"
    { $item[2] }
    | /\w+/
    { $item[1] }

VALUE   : /[-+]?\.?\d+(?:[eE]\d+)?/
    { $item[1] }
    | /'.*?'/   
    { 
        # remove leading/trailing quotes 
        my $val = $item[1];
        $val    =~ s/^['"]|['"]$//g;
        $return = $val;
    }
    | /NULL/
    { 'NULL' }

!;

# -------------------------------------------------------------------
sub parse {
    my ( $translator, $data ) = @_;
    my $parser = Parse::RecDescent->new($GRAMMAR);

    local $::RD_TRACE  = $translator->trace ? 1 : undef;
    local $DEBUG       = $translator->debug;

    unless (defined $parser) {
        return $translator->error("Error instantiating Parse::RecDescent ".
            "instance: Bad grammer");
    }

    my $result = $parser->startrule($data);
    return $translator->error( "Parse failed." ) unless defined $result;
    warn Dumper( $result ) if $DEBUG;

    my $schema = $translator->schema;
    my @tables = sort { 
        $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'}
    } keys %{ $result };

    for my $table_name ( @tables ) {
        my $tdata =  $result->{ $table_name };
        my $table =  $schema->add_table( 
            name  => $tdata->{'table_name'},
        ) or die $schema->error;

        $table->comments( $tdata->{'comments'} );

        my @fields = sort { 
            $tdata->{'fields'}->{$a}->{'order'} 
            <=>
            $tdata->{'fields'}->{$b}->{'order'}
        } keys %{ $tdata->{'fields'} };

        for my $fname ( @fields ) {
            my $fdata = $tdata->{'fields'}{ $fname };
            my $field = $table->add_field(
                name              => $fdata->{'name'},
                data_type         => $fdata->{'data_type'},
                size              => $fdata->{'size'},
                default_value     => $fdata->{'default'},
                is_auto_increment => $fdata->{'is_auto_inc'},
                is_nullable       => $fdata->{'null'},
                comments          => $fdata->{'comments'},
            ) or die $table->error;

            $table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
        }

        for my $idata ( @{ $tdata->{'indices'} || [] } ) {
            my $index  =  $table->add_index(
                name   => $idata->{'name'},
                type   => uc $idata->{'type'},
                fields => $idata->{'fields'},
            ) or die $table->error;
        }
    }

    return 1;
}

1;

# -------------------------------------------------------------------
# Where man is not nature is barren.
# William Blake
# -------------------------------------------------------------------

=pod

=head1 AUTHOR

Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.

=head1 SEE ALSO

perl(1), Parse::RecDescent, SQL::Translator::Schema.

=cut
Commit	Line	Data
7c44825c	1	package SQL::Translator::Parser::Access;
	2
	3	# -------------------------------------------------------------------
de8ae813	4	# $Id: Access.pm,v 1.2 2004-07-30 21:56:18 kycl4rk Exp $
7c44825c	5	# -------------------------------------------------------------------
	6	# Copyright (C) 2002-4 SQLFairy Authors
	7	#
	8	# This program is free software; you can redistribute it and/or
	9	# modify it under the terms of the GNU General Public License as
	10	# published by the Free Software Foundation; version 2.
	11	#
	12	# This program is distributed in the hope that it will be useful, but
	13	# WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	# General Public License for more details.
	16	#
	17	# You should have received a copy of the GNU General Public License
	18	# along with this program; if not, write to the Free Software
	19	# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	20	# 02111-1307 USA
	21	# -------------------------------------------------------------------
	22
	23	=head1 NAME
	24
	25	SQL::Translator::Parser::Access - parser for Access as produced by mdbtools
	26
	27	=head1 SYNOPSIS
	28
	29	use SQL::Translator;
	30	use SQL::Translator::Parser::Access;
	31
	32	my $translator = SQL::Translator->new;
	33	$translator->parser("SQL::Translator::Parser::Access");
	34
	35	=head1 DESCRIPTION
	36
	37	The grammar derived from the MySQL grammar. The input is expected to be
	38	something similar to the output of mdbtools (http://mdbtools.sourceforge.net/).
	39
	40	=cut
	41
	42	use strict;
	43	use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ];
de8ae813	44	$VERSION = sprintf "%d.%02d", q$Revision: 1.2 $ =~ /(\d+)\.(\d+)/;
7c44825c	45	$DEBUG = 0 unless defined $DEBUG;
	46
	47	use Data::Dumper;
	48	use Parse::RecDescent;
	49	use Exporter;
	50	use base qw(Exporter);
	51
	52	@EXPORT_OK = qw(parse);
	53
	54	# Enable warnings within the Parse::RecDescent module.
	55	$::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error
	56	$::RD_WARN = 1; # Enable warnings. This will warn on unused rules &c.
	57	$::RD_HINT = 1; # Give out hints to help fix problems.
	58
	59	$GRAMMAR = q!
	60
	61	{
	62	my ( %tables, $table_order, @table_comments );
	63	}
	64
	65	#
	66	# The "eofile" rule makes the parser fail if any "statement" rule
	67	# fails. Otherwise, the first successful match by a "statement"
	68	# won't cause the failure needed to know that the parse, as a whole,
	69	# failed. -ky
	70	#
	71	startrule : statement(s) eofile { \%tables }
	72
	73	eofile : /^\Z/
	74
	75	statement : comment
	76	\| use
	77	\| set
	78	\| drop
	79	\| create
	80	\| <error>
	81
	82	use : /use/i WORD ';'
	83	{ @table_comments = () }
	84
	85	set : /set/i /[^;]+/ ';'
	86	{ @table_comments = () }
	87
	88	drop : /drop/i TABLE /[^;]+/ ';'
	89
	90	drop : /drop/i WORD(s) ';'
	91	{ @table_comments = () }
	92
	93	create : CREATE /database/i WORD ';'
	94	{ @table_comments = () }
	95
	96	create : CREATE TABLE table_name '(' create_definition(s /,/) ')' ';'
	97	{
	98	my $table_name = $item{'table_name'};
	99	$tables{ $table_name }{'order'} = ++$table_order;
	100	$tables{ $table_name }{'table_name'} = $table_name;
	101
	102	if ( @table_comments ) {
	103	$tables{ $table_name }{'comments'} = [ @table_comments ];
	104	@table_comments = ();
	105	}
	106
	107	my $i = 1;
	108	for my $definition ( @{ $item[5] } ) {
109	if ( $definition->{'supertype'} eq 'field' ) {
110	my $field_name = $definition->{'name'};
111	$tables{ $table_name }{'fields'}{ $field_name } =
112	{ %$definition, order => $i };
113	$i++;
114
115	if ( $definition->{'is_primary_key'} ) {
116	push @{ $tables{ $table_name }{'constraints'} },
117	{
118	type => 'primary_key',
119	fields => [ $field_name ],
120	}
121	;
122	}
123	}
124	elsif ( $definition->{'supertype'} eq 'constraint' ) {
125	push @{ $tables{ $table_name }{'constraints'} }, $definition;
126	}
127	elsif ( $definition->{'supertype'} eq 'index' ) {
128	push @{ $tables{ $table_name }{'indices'} }, $definition;
129	}
130	}
131
132	1;
133	}
134
135	create : CREATE UNIQUE(?) /(index\|key)/i index_name /on/i table_name '(' field_name(s /,/) ')' ';'
136	{
137	@table_comments = ();
138	push @{ $tables{ $item{'table_name'} }{'indices'} },
139	{
140	name => $item[4],
141	type => $item[2] ? 'unique' : 'normal',
142	fields => $item[8],
143	}
144	;
145	}
146
147	create_definition : constraint
148	\| index
149	\| field
150	\| comment
151	\| <error>
152
153	comment : /^\s--(.)\n/
154	{
155	my $comment = $1;
156	$return = $comment;
157	push @table_comments, $comment;
158	}
159
160	field : field_name data_type field_qualifier(s?) reference_definition(?)
161	{
7c44825c	162	$return = {
	163	supertype => 'field',
	164	name => $item{'field_name'},
	165	data_type => $item{'data_type'}{'type'},
	166	size => $item{'data_type'}{'size'},
7c44825c	167	constraints => $item{'reference_definition(?)'},
7c44825c	168	}
	169	}
	170	\| <error>
	171
	172	field_qualifier : not_null
	173	{
	174	$return = {
	175	null => $item{'not_null'},
	176	}
	177	}
	178
	179	field_qualifier : default_val
	180	{
	181	$return = {
	182	default => $item{'default_val'},
	183	}
	184	}
	185
	186	field_qualifier : auto_inc
	187	{
	188	$return = {
	189	is_auto_inc => $item{'auto_inc'},
	190	}
	191	}
	192
	193	field_qualifier : primary_key
	194	{
	195	$return = {
	196	is_primary_key => $item{'primary_key'},
	197	}
	198	}
	199
	200	field_qualifier : unsigned
	201	{
	202	$return = {
	203	is_unsigned => $item{'unsigned'},
	204	}
	205	}
	206
	207	field_qualifier : /character set/i WORD
	208	{
	209	$return = {
	210	character_set => $item[2],
	211	}
	212	}
	213
	214	reference_definition : /references/i table_name parens_field_list(?) match_type(?) on_delete_do(?) on_update_do(?)
	215	{
	216	$return = {
	217	type => 'foreign_key',
	218	reference_table => $item[2],
	219	reference_fields => $item[3][0],
	220	match_type => $item[4][0],
	221	on_delete_do => $item[5][0],
	222	on_update_do => $item[6][0],
	223	}
	224	}
	225
	226	match_type : /match full/i { 'full' }
	227	\|
	228	/match partial/i { 'partial' }
	229
	230	on_delete_do : /on delete/i reference_option
	231	{ $item[2] }
232
233	on_update_do : /on update/i reference_option
234	{ $item[2] }
235
236	reference_option: /restrict/i \|
237	/cascade/i \|
238	/set null/i \|
239	/no action/i \|
240	/set default/i
241	{ $item[1] }
242
243	index : normal_index
244	\| fulltext_index
245	\| <error>
246
247	table_name : NAME
248
249	field_name : NAME
250
251	index_name : NAME
252
253	data_type : access_data_type parens_value_list(s?) type_qualifier(s?)
254	{
255	$return = {
256	type => $item[1],
257	size => $item[2][0],
258	qualifiers => $item[3],
259	}
260	}
261
262	access_data_type : /long integer/i { $return = 'Long Integer' }
263	\| /text/i { $return = 'Text' }
264	\| /datetime (\(short\))?/i { $return = 'DateTime' }
265	\| /boolean/i { $return = 'Boolean' }
266	\| WORD
267
268	parens_field_list : '(' field_name(s /,/) ')'
269	{ $item[2] }
270
271	parens_value_list : '(' VALUE(s /,/) ')'
272	{ $item[2] }
273
274	type_qualifier : /(BINARY\|UNSIGNED\|ZEROFILL)/i
275	{ lc $item[1] }
276
277	field_type : WORD
278
279	create_index : /create/i /index/i
280
281	not_null : /not/i /null/i { $return = 0 }
282
283	unsigned : /unsigned/i { $return = 0 }
284
285	default_val : /default/i /'(?:.?\\').?'\|(?:')?[\w\d:.-](?:')?/
286	{
287	$item[2] =~ s/^\s'\|'\s$//g;
288	$return = $item[2];
289	}
290
291	auto_inc : /auto_increment/i { 1 }
292
293	primary_key : /primary/i /key/i { 1 }
294
295	constraint : primary_key_def
296	\| unique_key_def
297	\| foreign_key_def
298	\| <error>
299
300	foreign_key_def : foreign_key_def_begin parens_field_list reference_definition
301	{
302	$return = {
303	supertype => 'constraint',
304	type => 'foreign_key',
305	name => $item[1],
306	fields => $item[2],
307	%{ $item{'reference_definition'} },
308	}
309	}
310
311	foreign_key_def_begin : /constraint/i /foreign key/i
312	{ $return = '' }
313	\|
314	/constraint/i WORD /foreign key/i
315	{ $return = $item[2] }
316	\|
317	/foreign key/i
318	{ $return = '' }
319
320	primary_key_def : primary_key index_name(?) '(' name_with_opt_paren(s /,/) ')'
321	{
322	$return = {
323	supertype => 'constraint',
324	name => $item{'index_name(?)'}[0],
325	type => 'primary_key',
326	fields => $item[4],
327	};
328	}
329
330	unique_key_def : UNIQUE KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')'
331	{
332	$return = {
333	supertype => 'constraint',
334	name => $item{'index_name(?)'}[0],
335	type => 'unique',
336	fields => $item[5],
337	}
338	}
339
340	normal_index : KEY index_name(?) '(' name_with_opt_paren(s /,/) ')'
341	{
342	$return = {
343	supertype => 'index',
344	type => 'normal',
345	name => $item{'index_name(?)'}[0],
346	fields => $item[4],
347	}
348	}
349
350	fulltext_index : /fulltext/i KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')'
351	{
352	$return = {
353	supertype => 'index',
354	type => 'fulltext',
355	name => $item{'index_name(?)'}[0],
356	fields => $item[5],
357	}
358	}
359
360	name_with_opt_paren : NAME parens_value_list(s?)
361	{ $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] }
362
363	UNIQUE : /unique/i { 1 }
364
365	KEY : /key/i \| /index/i
366
367	table_option : WORD /\s=\s/ WORD
368	{
369	$return = { $item[1] => $item[3] };
370	}
371
372	CREATE : /create/i
373
374	TEMPORARY : /temporary/i
375
376	TABLE : /table/i
377
378	WORD : /\w+/
379
380	DIGITS : /\d+/
381
382	COMMA : ','
383
384	NAME : "`" /\w+/ "`"
385	{ $item[2] }
386	\| /\w+/
387	{ $item[1] }
388
389	VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/
390	{ $item[1] }
391	\| /'.*?'/
392	{
393	# remove leading/trailing quotes
394	my $val = $item[1];
395	$val =~ s/^['"]\|['"]$//g;
396	$return = $val;
397	}
398	\| /NULL/
399	{ 'NULL' }
400
401	!;
402
403	# -------------------------------------------------------------------
404	sub parse {
405	my ( $translator, $data ) = @_;
406	my $parser = Parse::RecDescent->new($GRAMMAR);
407
408	local $::RD_TRACE = $translator->trace ? 1 : undef;
409	local $DEBUG = $translator->debug;
410
411	unless (defined $parser) {
412	return $translator->error("Error instantiating Parse::RecDescent ".
413	"instance: Bad grammer");
414	}
415
416	my $result = $parser->startrule($data);
417	return $translator->error( "Parse failed." ) unless defined $result;
418	warn Dumper( $result ) if $DEBUG;
419
420	my $schema = $translator->schema;
421	my @tables = sort {
422	$result->{ $a }->{'order'} <=> $result->{ $b }->{'order'}
423	} keys %{ $result };
424
425	for my $table_name ( @tables ) {
426	my $tdata = $result->{ $table_name };
427	my $table = $schema->add_table(
428	name => $tdata->{'table_name'},
429	) or die $schema->error;
430
431	$table->comments( $tdata->{'comments'} );
432
433	my @fields = sort {
434	$tdata->{'fields'}->{$a}->{'order'}
435	<=>
436	$tdata->{'fields'}->{$b}->{'order'}
437	} keys %{ $tdata->{'fields'} };
438
439	for my $fname ( @fields ) {
440	my $fdata = $tdata->{'fields'}{ $fname };
441	my $field = $table->add_field(
442	name => $fdata->{'name'},
443	data_type => $fdata->{'data_type'},
444	size => $fdata->{'size'},
445	default_value => $fdata->{'default'},
446	is_auto_increment => $fdata->{'is_auto_inc'},
447	is_nullable => $fdata->{'null'},
448	comments => $fdata->{'comments'},
449	) or die $table->error;
450
451	$table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
7c44825c	452	}
	453
	454	for my $idata ( @{ $tdata->{'indices'} \|\| [] } ) {
	455	my $index = $table->add_index(
	456	name => $idata->{'name'},
	457	type => uc $idata->{'type'},
	458	fields => $idata->{'fields'},
	459	) or die $table->error;
	460	}
7c44825c	461	}
	462
	463	return 1;
	464	}
	465
	466	1;
	467
	468	# -------------------------------------------------------------------
	469	# Where man is not nature is barren.
	470	# William Blake
	471	# -------------------------------------------------------------------
	472
	473	=pod
	474
	475	=head1 AUTHOR
	476
	477	Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
	478
	479	=head1 SEE ALSO
	480
	481	perl(1), Parse::RecDescent, SQL::Translator::Schema.
	482
	483	=cut