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1 | package SQL::Translator::Parser::Sybase; |
2 | |
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3 | # ------------------------------------------------------------------- |
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4 | # $Id: Sybase.pm,v 1.7 2003-10-15 18:35:09 kycl4rk Exp $ |
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5 | # ------------------------------------------------------------------- |
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6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>, |
7 | # darren chamberlain <darren@cpan.org>, |
8 | # Chris Mungall <cjm@fruitfly.org> |
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9 | # |
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10 | # This program is free software; you can redistribute it and/or |
11 | # modify it under the terms of the GNU General Public License as |
12 | # published by the Free Software Foundation; version 2. |
13 | # |
14 | # This program is distributed in the hope that it will be useful, but |
15 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | # General Public License for more details. |
18 | # |
19 | # You should have received a copy of the GNU General Public License |
20 | # along with this program; if not, write to the Free Software |
21 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
22 | # 02111-1307 USA |
23 | # ------------------------------------------------------------------- |
24 | |
25 | =head1 NAME |
26 | |
27 | SQL::Translator::Parser::Sybase - parser for Sybase |
28 | |
29 | =head1 SYNOPSIS |
30 | |
31 | use SQL::Translator::Parser::Sybase; |
32 | |
33 | =head1 DESCRIPTION |
34 | |
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35 | Mostly parses the output of "dbschema.pl," a Perl script freely |
36 | available from http://www.midsomer.org. The parsing is not complete, |
37 | however, and you would probably have much better luck using the |
38 | DBI-Sybase parser included with SQL::Translator. |
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39 | |
40 | =cut |
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41 | |
d9656bd5 |
42 | use strict; |
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43 | |
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44 | use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ]; |
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45 | $VERSION = sprintf "%d.%02d", q$Revision: 1.7 $ =~ /(\d+)\.(\d+)/; |
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46 | $DEBUG = 0 unless defined $DEBUG; |
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47 | |
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48 | use Data::Dumper; |
49 | use Parse::RecDescent; |
50 | use Exporter; |
51 | use base qw(Exporter); |
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52 | |
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53 | @EXPORT_OK = qw(parse); |
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54 | |
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55 | $::RD_ERRORS = 1; |
56 | $::RD_WARN = 1; |
57 | $::RD_HINT = 1; |
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58 | |
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59 | $GRAMMAR = q{ |
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60 | |
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61 | { |
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62 | my ( %tables, @table_comments ); |
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63 | } |
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64 | |
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65 | startrule : statement(s) eofile { \%tables } |
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66 | |
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67 | eofile : /^\Z/ |
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68 | |
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69 | statement : create_table |
70 | | create_procedure |
71 | | create_index |
72 | | create_constraint |
73 | | comment |
74 | | use |
75 | | setuser |
76 | | if |
77 | | print |
78 | | grant |
79 | | exec |
80 | | <error> |
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81 | |
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82 | use : /use/i WORD GO |
83 | { @table_comments = () } |
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84 | |
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85 | setuser : /setuser/i NAME GO |
86 | |
87 | if : /if/i object_not_null begin if_command end GO |
88 | |
89 | if_command : grant |
90 | | create_index |
91 | | create_constraint |
92 | |
93 | object_not_null : /object_id/i '(' ident ')' /is not null/i |
94 | |
95 | print : /\s*/ /print/i /.*/ |
96 | |
97 | else : /else/i /.*/ |
98 | |
99 | begin : /begin/i |
100 | |
101 | end : /end/i |
102 | |
103 | grant : /grant/i /[^\n]*/ |
104 | |
105 | exec : exec_statement(s) GO |
106 | |
107 | exec_statement : /exec/i /[^\n]+/ |
108 | |
109 | comment : comment_start comment_middle comment_end |
110 | { |
111 | my $comment = $item[2]; |
112 | $comment =~ s/^\s*|\s*$//mg; |
113 | $comment =~ s/^\**\s*//mg; |
114 | push @table_comments, $comment; |
115 | } |
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116 | |
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117 | comment_start : /^\s*\/\*/ |
118 | |
119 | comment_end : /\s*\*\// |
120 | |
121 | comment_middle : m{([^*]+|\*(?!/))*} |
122 | |
123 | # |
124 | # Create table. |
125 | # |
126 | create_table : /create/i /table/i ident '(' create_def(s /,/) ')' lock(?) on_system(?) GO |
127 | { |
128 | my $table_owner = $item[3]{'owner'}; |
129 | my $table_name = $item[3]{'name'}; |
130 | |
131 | if ( @table_comments ) { |
132 | $tables{ $table_name }{'comments'} = [ @table_comments ]; |
133 | @table_comments = (); |
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134 | } |
135 | |
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136 | $tables{ $table_name }{'name'} = $table_name; |
137 | $tables{ $table_name }{'owner'} = $table_owner; |
138 | $tables{ $table_name }{'system'} = $item[7]; |
139 | |
140 | my $i = 0; |
141 | for my $def ( @{ $item[5] } ) { |
142 | if ( $def->{'supertype'} eq 'field' ) { |
143 | my $field_name = $def->{'name'}; |
144 | $tables{ $table_name }{'fields'}{ $field_name } = |
145 | { %$def, order => $i }; |
146 | $i++; |
147 | |
148 | if ( $def->{'is_primary_key'} ) { |
149 | push @{ $tables{ $table_name }{'constraints'} }, { |
150 | type => 'primary_key', |
151 | fields => [ $field_name ], |
152 | }; |
153 | } |
154 | } |
155 | elsif ( $def->{'supertype'} eq 'constraint' ) { |
156 | push @{ $tables{ $table_name }{'constraints'} }, $def; |
157 | } |
158 | else { |
159 | push @{ $tables{ $table_name }{'indices'} }, $def; |
160 | } |
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161 | } |
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162 | } |
163 | |
164 | create_constraint : /create/i constraint |
165 | { |
166 | @table_comments = (); |
167 | push @{ $tables{ $item[2]{'table'} }{'constraints'} }, $item[2]; |
168 | } |
169 | |
170 | create_index : /create/i index |
171 | { |
172 | @table_comments = (); |
173 | push @{ $tables{ $item[2]{'table'} }{'indices'} }, $item[2]; |
174 | } |
175 | |
176 | create_procedure : /create/i /procedure/i procedure_body GO |
177 | { |
178 | @table_comments = (); |
179 | } |
180 | |
181 | procedure_body : not_go(s) |
182 | |
183 | not_go : /((?!go).)*/ |
184 | |
185 | create_def : field |
186 | | index |
187 | | constraint |
188 | |
189 | blank : /\s*/ |
190 | |
191 | field : field_name data_type nullable(?) |
192 | { |
193 | $return = { |
194 | supertype => 'field', |
195 | name => $item{'field_name'}, |
196 | data_type => $item{'data_type'}{'type'}, |
197 | size => $item{'data_type'}{'size'}, |
198 | nullable => $item[3][0], |
199 | # default => $item{'default_val'}[0], |
200 | # is_auto_inc => $item{'auto_inc'}[0], |
201 | # is_primary_key => $item{'primary_key'}[0], |
202 | } |
203 | } |
204 | |
205 | constraint : primary_key_constraint |
206 | | unique_constraint |
207 | |
208 | field_name : WORD |
209 | |
210 | index_name : WORD |
211 | |
212 | table_name : WORD |
213 | |
214 | data_type : WORD field_size(?) |
215 | { |
216 | $return = { |
217 | type => $item[1], |
218 | size => $item[2][0] |
219 | } |
220 | } |
221 | |
222 | lock : /lock/i /datarows/i |
223 | |
224 | field_type : WORD |
225 | |
226 | field_size : '(' num_range ')' { $item{'num_range'} } |
227 | |
228 | num_range : DIGITS ',' DIGITS |
229 | { $return = $item[1].','.$item[3] } |
230 | | DIGITS |
231 | { $return = $item[1] } |
232 | |
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233 | |
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234 | nullable : /not/i /null/i |
235 | { $return = 0 } |
236 | | /null/i |
237 | { $return = 1 } |
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238 | |
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239 | default_val : /default/i /(?:')?[\w\d.-]*(?:')?/ |
240 | { $item[2]=~s/'//g; $return=$item[2] } |
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241 | |
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242 | auto_inc : /auto_increment/i { 1 } |
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243 | |
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244 | primary_key_constraint : /primary/i /key/i index_name(?) parens_field_list |
245 | { |
246 | $return = { |
247 | supertype => 'constraint', |
248 | name => $item{'index_name'}[0], |
249 | type => 'primary_key', |
250 | fields => $item[4], |
251 | } |
252 | } |
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253 | |
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254 | unique_constraint : /unique/i clustered(?) INDEX(?) index_name(?) on_table(?) parens_field_list |
255 | { |
256 | $return = { |
257 | supertype => 'constraint', |
258 | type => 'unique', |
259 | clustered => $item[2][0], |
260 | name => $item[4][0], |
261 | table => $item[5][0], |
262 | fields => $item[6], |
263 | } |
264 | } |
265 | |
266 | clustered : /clustered/i |
267 | { $return = 1 } |
268 | | /nonclustered/i |
269 | { $return = 0 } |
270 | |
271 | INDEX : /index/i |
272 | |
273 | on_table : /on/i table_name |
274 | { $return = $item[2] } |
275 | |
276 | on_system : /on/i /system/i |
277 | { $return = 1 } |
278 | |
279 | index : clustered(?) INDEX index_name(?) on_table(?) parens_field_list |
280 | { |
281 | $return = { |
282 | supertype => 'index', |
283 | type => 'normal', |
284 | clustered => $item[1][0], |
285 | name => $item[3][0], |
286 | table => $item[4][0], |
287 | fields => $item[5], |
288 | } |
289 | } |
290 | |
291 | parens_field_list : '(' field_name(s /,/) ')' |
292 | { $item[2] } |
293 | |
294 | ident : QUOTE(?) WORD '.' WORD QUOTE(?) |
295 | { $return = { owner => $item[2], name => $item[4] } } |
296 | | WORD |
297 | { $return = { name => $item[2] } } |
298 | |
299 | GO : /^go/i |
300 | |
301 | NAME : QUOTE(?) /\w+/ QUOTE(?) |
302 | { $item[2] } |
303 | |
304 | WORD : /[\w#]+/ |
305 | |
306 | DIGITS : /\d+/ |
307 | |
308 | COMMA : ',' |
309 | |
310 | QUOTE : /'/ |
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311 | |
312 | }; |
313 | |
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314 | # ------------------------------------------------------------------- |
315 | sub parse { |
316 | my ( $translator, $data ) = @_; |
317 | my $parser = Parse::RecDescent->new($GRAMMAR); |
318 | |
319 | local $::RD_TRACE = $translator->trace ? 1 : undef; |
320 | local $DEBUG = $translator->debug; |
321 | |
322 | unless (defined $parser) { |
323 | return $translator->error("Error instantiating Parse::RecDescent ". |
324 | "instance: Bad grammer"); |
325 | } |
326 | |
327 | my $result = $parser->startrule($data); |
328 | return $translator->error( "Parse failed." ) unless defined $result; |
329 | warn Dumper( $result ) if $DEBUG; |
330 | |
331 | my $schema = $translator->schema; |
332 | my @tables = sort { |
333 | $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'} |
334 | } keys %{ $result }; |
335 | |
336 | for my $table_name ( @tables ) { |
337 | my $tdata = $result->{ $table_name }; |
338 | my $table = $schema->add_table( name => $tdata->{'name'} ) |
339 | or die "Can't create table '$table_name': ", $schema->error; |
340 | |
341 | $table->comments( $tdata->{'comments'} ); |
342 | |
343 | my @fields = sort { |
344 | $tdata->{'fields'}->{$a}->{'order'} |
345 | <=> |
346 | $tdata->{'fields'}->{$b}->{'order'} |
347 | } keys %{ $tdata->{'fields'} }; |
348 | |
349 | for my $fname ( @fields ) { |
350 | my $fdata = $tdata->{'fields'}{ $fname }; |
351 | my $field = $table->add_field( |
352 | name => $fdata->{'name'}, |
353 | data_type => $fdata->{'data_type'}, |
354 | size => $fdata->{'size'}, |
355 | default_value => $fdata->{'default'}, |
356 | is_auto_increment => $fdata->{'is_auto_inc'}, |
357 | is_nullable => $fdata->{'nullable'}, |
358 | comments => $fdata->{'comments'}, |
359 | ) or die $table->error; |
360 | |
361 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
362 | |
363 | for my $qual ( qw[ binary unsigned zerofill list ] ) { |
364 | if ( my $val = $fdata->{ $qual } || $fdata->{ uc $qual } ) { |
365 | next if ref $val eq 'ARRAY' && !@$val; |
366 | $field->extra( $qual, $val ); |
367 | } |
368 | } |
369 | |
370 | if ( $field->data_type =~ /(set|enum)/i && !$field->size ) { |
371 | my %extra = $field->extra; |
372 | my $longest = 0; |
373 | for my $len ( map { length } @{ $extra{'list'} || [] } ) { |
374 | $longest = $len if $len > $longest; |
375 | } |
376 | $field->size( $longest ) if $longest; |
377 | } |
378 | |
379 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
380 | next unless $cdata->{'type'} eq 'foreign_key'; |
381 | $cdata->{'fields'} ||= [ $field->name ]; |
382 | push @{ $tdata->{'constraints'} }, $cdata; |
383 | } |
384 | } |
385 | |
386 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
387 | my $index = $table->add_index( |
388 | name => $idata->{'name'}, |
389 | type => uc $idata->{'type'}, |
390 | fields => $idata->{'fields'}, |
391 | ) or die $table->error; |
392 | } |
393 | |
394 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
395 | my $constraint = $table->add_constraint( |
396 | name => $cdata->{'name'}, |
397 | type => $cdata->{'type'}, |
398 | fields => $cdata->{'fields'}, |
399 | reference_table => $cdata->{'reference_table'}, |
400 | reference_fields => $cdata->{'reference_fields'}, |
401 | match_type => $cdata->{'match_type'} || '', |
402 | on_delete => $cdata->{'on_delete_do'}, |
403 | on_update => $cdata->{'on_update_do'}, |
404 | ) or die $table->error; |
405 | } |
406 | } |
407 | |
408 | return 1; |
409 | } |
410 | |
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411 | 1; |
412 | |
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413 | # ------------------------------------------------------------------- |
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414 | # Every hero becomes a bore at last. |
415 | # Ralph Waldo Emerson |
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416 | # ------------------------------------------------------------------- |
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417 | |
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418 | =pod |
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419 | |
420 | =head1 AUTHOR |
421 | |
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422 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
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423 | |
424 | =head1 SEE ALSO |
425 | |
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426 | SQL::Translator, SQL::Translator::Parser::DBI, L<http://www.midsomer.org/>. |
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427 | |
428 | =cut |