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.
22 use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ];
24 $DEBUG = 0 unless defined $DEBUG;
27 use Parse::RecDescent;
29 use base qw(Exporter);
31 @EXPORT_OK = qw(parse);
40 my ( %tables, @table_comments, $table_order );
43 startrule : statement(s) eofile { \%tables }
47 statement : create_table
61 { @table_comments = () }
63 setuser : /setuser/i NAME GO
65 if : /if/i object_not_null begin if_command end GO
71 object_not_null : /object_id/i '(' ident ')' /is not null/i
73 print : /\s*/ /print/i /.*/
81 grant : /grant/i /[^\n]*/
83 exec : exec_statement(s) GO
85 exec_statement : /exec/i /[^\n]+/
87 comment : comment_start comment_middle comment_end
89 my $comment = $item[2];
90 $comment =~ s/^\s*|\s*$//mg;
91 $comment =~ s/^\**\s*//mg;
92 push @table_comments, $comment;
95 comment_start : /^\s*\/\*/
97 comment_end : /\s*\*\//
99 comment_middle : m{([^*]+|\*(?!/))*}
104 create_table : /create/i /table/i ident '(' create_def(s /,/) ')' lock(?) on_system(?) GO
106 my $table_owner = $item[3]{'owner'};
107 my $table_name = $item[3]{'name'};
109 if ( @table_comments ) {
110 $tables{ $table_name }{'comments'} = [ @table_comments ];
111 @table_comments = ();
114 $tables{ $table_name }{'order'} = ++$table_order;
115 $tables{ $table_name }{'name'} = $table_name;
116 $tables{ $table_name }{'owner'} = $table_owner;
117 $tables{ $table_name }{'system'} = $item[7];
120 for my $def ( @{ $item[5] } ) {
121 if ( $def->{'supertype'} eq 'field' ) {
122 my $field_name = $def->{'name'};
123 $tables{ $table_name }{'fields'}{ $field_name } =
124 { %$def, order => $i };
127 if ( $def->{'is_primary_key'} ) {
128 push @{ $tables{ $table_name }{'constraints'} }, {
129 type => 'primary_key',
130 fields => [ $field_name ],
134 elsif ( $def->{'supertype'} eq 'constraint' ) {
135 push @{ $tables{ $table_name }{'constraints'} }, $def;
138 push @{ $tables{ $table_name }{'indices'} }, $def;
143 create_constraint : /create/i constraint
145 @table_comments = ();
146 push @{ $tables{ $item[2]{'table'} }{'constraints'} }, $item[2];
149 create_index : /create/i index
151 @table_comments = ();
152 push @{ $tables{ $item[2]{'table'} }{'indices'} }, $item[2];
155 create_procedure : /create/i /procedure/i procedure_body GO
157 @table_comments = ();
160 procedure_body : not_go(s)
162 not_go : /((?!go).)*/
170 field : field_name data_type nullable(?)
173 supertype => 'field',
174 name => $item{'field_name'},
175 data_type => $item{'data_type'}{'type'},
176 size => $item{'data_type'}{'size'},
177 nullable => $item[3][0],
178 # default => $item{'default_val'}[0],
179 # is_auto_inc => $item{'auto_inc'}[0],
180 # is_primary_key => $item{'primary_key'}[0],
184 constraint : primary_key_constraint
193 data_type : WORD field_size(?)
201 lock : /lock/i /datarows/i
205 field_size : '(' num_range ')' { $item{'num_range'} }
207 num_range : DIGITS ',' DIGITS
208 { $return = $item[1].','.$item[3] }
210 { $return = $item[1] }
213 nullable : /not/i /null/i
218 default_val : /default/i /(?:')?[\w\d.-]*(?:')?/
219 { $item[2]=~s/'//g; $return=$item[2] }
221 auto_inc : /auto_increment/i { 1 }
223 primary_key_constraint : /primary/i /key/i index_name(?) parens_field_list
226 supertype => 'constraint',
227 name => $item{'index_name'}[0],
228 type => 'primary_key',
233 unique_constraint : /unique/i clustered(?) INDEX(?) index_name(?) on_table(?) parens_field_list
236 supertype => 'constraint',
238 clustered => $item[2][0],
240 table => $item[5][0],
245 clustered : /clustered/i
252 on_table : /on/i table_name
253 { $return = $item[2] }
255 on_system : /on/i /system/i
258 index : clustered(?) INDEX index_name(?) on_table(?) parens_field_list
261 supertype => 'index',
263 clustered => $item[1][0],
265 table => $item[4][0],
270 parens_field_list : '(' field_name(s /,/) ')'
273 ident : QUOTE(?) WORD '.' WORD QUOTE(?)
274 { $return = { owner => $item[2], name => $item[4] } }
276 { $return = { name => $item[2] } }
280 NAME : QUOTE(?) /\w+/ QUOTE(?)
294 my ( $translator, $data ) = @_;
295 my $parser = Parse::RecDescent->new($GRAMMAR);
297 local $::RD_TRACE = $translator->trace ? 1 : undef;
298 local $DEBUG = $translator->debug;
300 unless (defined $parser) {
301 return $translator->error("Error instantiating Parse::RecDescent ".
302 "instance: Bad grammer");
305 my $result = $parser->startrule($data);
306 return $translator->error( "Parse failed." ) unless defined $result;
307 warn Dumper( $result ) if $DEBUG;
309 my $schema = $translator->schema;
311 $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'}
314 for my $table_name ( @tables ) {
315 my $tdata = $result->{ $table_name };
316 my $table = $schema->add_table( name => $tdata->{'name'} )
317 or die "Can't create table '$table_name': ", $schema->error;
319 $table->comments( $tdata->{'comments'} );
322 $tdata->{'fields'}->{$a}->{'order'}
324 $tdata->{'fields'}->{$b}->{'order'}
325 } keys %{ $tdata->{'fields'} };
327 for my $fname ( @fields ) {
328 my $fdata = $tdata->{'fields'}{ $fname };
329 my $field = $table->add_field(
330 name => $fdata->{'name'},
331 data_type => $fdata->{'data_type'},
332 size => $fdata->{'size'},
333 default_value => $fdata->{'default'},
334 is_auto_increment => $fdata->{'is_auto_inc'},
335 is_nullable => $fdata->{'nullable'},
336 comments => $fdata->{'comments'},
337 ) or die $table->error;
339 $table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
341 for my $qual ( qw[ binary unsigned zerofill list ] ) {
342 if ( my $val = $fdata->{ $qual } || $fdata->{ uc $qual } ) {
343 next if ref $val eq 'ARRAY' && !@$val;
344 $field->extra( $qual, $val );
348 if ( $field->data_type =~ /(set|enum)/i && !$field->size ) {
349 my %extra = $field->extra;
351 for my $len ( map { length } @{ $extra{'list'} || [] } ) {
352 $longest = $len if $len > $longest;
354 $field->size( $longest ) if $longest;
357 for my $cdata ( @{ $fdata->{'constraints'} } ) {
358 next unless $cdata->{'type'} eq 'foreign_key';
359 $cdata->{'fields'} ||= [ $field->name ];
360 push @{ $tdata->{'constraints'} }, $cdata;
364 for my $idata ( @{ $tdata->{'indices'} || [] } ) {
365 my $index = $table->add_index(
366 name => $idata->{'name'},
367 type => uc $idata->{'type'},
368 fields => $idata->{'fields'},
369 ) or die $table->error;
372 for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
373 my $constraint = $table->add_constraint(
374 name => $cdata->{'name'},
375 type => $cdata->{'type'},
376 fields => $cdata->{'fields'},
377 reference_table => $cdata->{'reference_table'},
378 reference_fields => $cdata->{'reference_fields'},
379 match_type => $cdata->{'match_type'} || '',
380 on_delete => $cdata->{'on_delete'} || $cdata->{'on_delete_do'},
381 on_update => $cdata->{'on_update'} || $cdata->{'on_update_do'},
382 ) or die $table->error;
391 # -------------------------------------------------------------------
392 # Every hero becomes a bore at last.
393 # Ralph Waldo Emerson
394 # -------------------------------------------------------------------
400 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
404 SQL::Translator, SQL::Translator::Parser::DBI, L<http://www.midsomer.org/>.