1 package SQL::Translator::Parser::Sybase;
5 SQL::Translator::Parser::Sybase - parser for Sybase
9 use SQL::Translator::Parser::Sybase;
13 Mostly parses the output of "dbschema.pl," a Perl script freely
14 available from http://www.midsomer.org. The parsing is not complete,
15 however, and you would probably have much better luck using the
16 DBI-Sybase parser included with SQL::Translator.
23 our $VERSION = '1.59';
26 $DEBUG = 0 unless defined $DEBUG;
29 use SQL::Translator::Utils qw/ddl_parser_instance/;
31 use base qw(Exporter);
32 our @EXPORT_OK = qw(parse);
34 our $GRAMMAR = <<'END_OF_GRAMMAR';
37 my ( %tables, @table_comments, $table_order );
40 startrule : statement(s) eofile { \%tables }
44 statement : create_table
58 { @table_comments = () }
60 setuser : /setuser/i NAME GO
62 if : /if/i object_not_null begin if_command end GO
68 object_not_null : /object_id/i '(' ident ')' /is not null/i
70 print : /\s*/ /print/i /.*/
78 grant : /grant/i /[^\n]*/
80 exec : exec_statement(s) GO
82 exec_statement : /exec/i /[^\n]+/
84 comment : comment_start comment_middle comment_end
86 my $comment = $item[2];
87 $comment =~ s/^\s*|\s*$//mg;
88 $comment =~ s/^\**\s*//mg;
89 push @table_comments, $comment;
92 comment_start : /^\s*\/\*/
94 comment_end : /\s*\*\//
96 comment_middle : m{([^*]+|\*(?!/))*}
101 create_table : /create/i /table/i ident '(' create_def(s /,/) ')' lock(?) on_system(?) GO
103 my $table_owner = $item[3]{'owner'};
104 my $table_name = $item[3]{'name'};
106 if ( @table_comments ) {
107 $tables{ $table_name }{'comments'} = [ @table_comments ];
108 @table_comments = ();
111 $tables{ $table_name }{'order'} = ++$table_order;
112 $tables{ $table_name }{'name'} = $table_name;
113 $tables{ $table_name }{'owner'} = $table_owner;
114 $tables{ $table_name }{'system'} = $item[7];
117 for my $def ( @{ $item[5] } ) {
118 if ( $def->{'supertype'} eq 'field' ) {
119 my $field_name = $def->{'name'};
120 $tables{ $table_name }{'fields'}{ $field_name } =
121 { %$def, order => $i };
124 if ( $def->{'is_primary_key'} ) {
125 push @{ $tables{ $table_name }{'constraints'} }, {
126 type => 'primary_key',
127 fields => [ $field_name ],
131 elsif ( $def->{'supertype'} eq 'constraint' ) {
132 push @{ $tables{ $table_name }{'constraints'} }, $def;
135 push @{ $tables{ $table_name }{'indices'} }, $def;
140 create_constraint : /create/i constraint
142 @table_comments = ();
143 push @{ $tables{ $item[2]{'table'} }{'constraints'} }, $item[2];
146 create_index : /create/i index
148 @table_comments = ();
149 push @{ $tables{ $item[2]{'table'} }{'indices'} }, $item[2];
152 create_procedure : /create/i /procedure/i procedure_body GO
154 @table_comments = ();
157 procedure_body : not_go(s)
159 not_go : /((?!go).)*/
167 field : field_name data_type nullable(?)
170 supertype => 'field',
171 name => $item{'field_name'},
172 data_type => $item{'data_type'}{'type'},
173 size => $item{'data_type'}{'size'},
174 nullable => $item[3][0],
175 # default => $item{'default_val'}[0],
176 # is_auto_inc => $item{'auto_inc'}[0],
177 # is_primary_key => $item{'primary_key'}[0],
181 constraint : primary_key_constraint
190 data_type : WORD field_size(?)
198 lock : /lock/i /datarows/i
202 field_size : '(' num_range ')' { $item{'num_range'} }
204 num_range : DIGITS ',' DIGITS
205 { $return = $item[1].','.$item[3] }
207 { $return = $item[1] }
210 nullable : /not/i /null/i
215 default_val : /default/i /(?:')?[\w\d.-]*(?:')?/
216 { $item[2]=~s/'//g; $return=$item[2] }
218 auto_inc : /auto_increment/i { 1 }
220 primary_key_constraint : /primary/i /key/i index_name(?) parens_field_list
223 supertype => 'constraint',
224 name => $item{'index_name'}[0],
225 type => 'primary_key',
230 unique_constraint : /unique/i clustered(?) INDEX(?) index_name(?) on_table(?) parens_field_list
233 supertype => 'constraint',
235 clustered => $item[2][0],
237 table => $item[5][0],
242 clustered : /clustered/i
249 on_table : /on/i table_name
250 { $return = $item[2] }
252 on_system : /on/i /system/i
255 index : clustered(?) INDEX index_name(?) on_table(?) parens_field_list
258 supertype => 'index',
260 clustered => $item[1][0],
262 table => $item[4][0],
267 parens_field_list : '(' field_name(s /,/) ')'
270 ident : QUOTE(?) WORD '.' WORD QUOTE(?)
271 { $return = { owner => $item[2], name => $item[4] } }
273 { $return = { name => $item[2] } }
277 NAME : QUOTE(?) /\w+/ QUOTE(?)
291 my ( $translator, $data ) = @_;
293 # Enable warnings within the Parse::RecDescent module.
294 local $::RD_ERRORS = 1 unless defined $::RD_ERRORS; # Make sure the parser dies when it encounters an error
295 local $::RD_WARN = 1 unless defined $::RD_WARN; # Enable warnings. This will warn on unused rules &c.
296 local $::RD_HINT = 1 unless defined $::RD_HINT; # Give out hints to help fix problems.
298 local $::RD_TRACE = $translator->trace ? 1 : undef;
299 local $DEBUG = $translator->debug;
301 my $parser = ddl_parser_instance('Sybase');
303 my $result = $parser->startrule($data);
304 return $translator->error( "Parse failed." ) unless defined $result;
305 warn Dumper( $result ) if $DEBUG;
307 my $schema = $translator->schema;
309 $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'}
312 for my $table_name ( @tables ) {
313 my $tdata = $result->{ $table_name };
314 my $table = $schema->add_table( name => $tdata->{'name'} )
315 or die "Can't create table '$table_name': ", $schema->error;
317 $table->comments( $tdata->{'comments'} );
320 $tdata->{'fields'}->{$a}->{'order'}
322 $tdata->{'fields'}->{$b}->{'order'}
323 } keys %{ $tdata->{'fields'} };
325 for my $fname ( @fields ) {
326 my $fdata = $tdata->{'fields'}{ $fname };
327 my $field = $table->add_field(
328 name => $fdata->{'name'},
329 data_type => $fdata->{'data_type'},
330 size => $fdata->{'size'},
331 default_value => $fdata->{'default'},
332 is_auto_increment => $fdata->{'is_auto_inc'},
333 is_nullable => $fdata->{'nullable'},
334 comments => $fdata->{'comments'},
335 ) or die $table->error;
337 $table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
339 for my $qual ( qw[ binary unsigned zerofill list ] ) {
340 if ( my $val = $fdata->{ $qual } || $fdata->{ uc $qual } ) {
341 next if ref $val eq 'ARRAY' && !@$val;
342 $field->extra( $qual, $val );
346 if ( $field->data_type =~ /(set|enum)/i && !$field->size ) {
347 my %extra = $field->extra;
349 for my $len ( map { length } @{ $extra{'list'} || [] } ) {
350 $longest = $len if $len > $longest;
352 $field->size( $longest ) if $longest;
355 for my $cdata ( @{ $fdata->{'constraints'} } ) {
356 next unless $cdata->{'type'} eq 'foreign_key';
357 $cdata->{'fields'} ||= [ $field->name ];
358 push @{ $tdata->{'constraints'} }, $cdata;
362 for my $idata ( @{ $tdata->{'indices'} || [] } ) {
363 my $index = $table->add_index(
364 name => $idata->{'name'},
365 type => uc $idata->{'type'},
366 fields => $idata->{'fields'},
367 ) or die $table->error;
370 for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
371 my $constraint = $table->add_constraint(
372 name => $cdata->{'name'},
373 type => $cdata->{'type'},
374 fields => $cdata->{'fields'},
375 reference_table => $cdata->{'reference_table'},
376 reference_fields => $cdata->{'reference_fields'},
377 match_type => $cdata->{'match_type'} || '',
378 on_delete => $cdata->{'on_delete'} || $cdata->{'on_delete_do'},
379 on_update => $cdata->{'on_update'} || $cdata->{'on_update_do'},
380 ) or die $table->error;
389 # -------------------------------------------------------------------
390 # Every hero becomes a bore at last.
391 # Ralph Waldo Emerson
392 # -------------------------------------------------------------------
398 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
402 SQL::Translator, SQL::Translator::Parser::DBI, L<http://www.midsomer.org/>.