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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 1.10 2005-06-28 16:39:41 mwz444 Exp $ |
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5 | # ------------------------------------------------------------------- |
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6 | # Copyright (C) 2002-4 SQLFairy Authors |
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7 | # |
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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::Sybase - parser for Sybase |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | use SQL::Translator::Parser::Sybase; |
30 | |
31 | =head1 DESCRIPTION |
32 | |
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33 | Mostly parses the output of "dbschema.pl," a Perl script freely |
34 | available from http://www.midsomer.org. The parsing is not complete, |
35 | however, and you would probably have much better luck using the |
36 | DBI-Sybase parser included with SQL::Translator. |
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37 | |
38 | =cut |
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39 | |
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40 | use strict; |
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41 | |
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42 | use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ]; |
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43 | $VERSION = sprintf "%d.%02d", q$Revision: 1.10 $ =~ /(\d+)\.(\d+)/; |
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44 | $DEBUG = 0 unless defined $DEBUG; |
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45 | |
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46 | use Data::Dumper; |
47 | use Parse::RecDescent; |
48 | use Exporter; |
49 | use base qw(Exporter); |
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50 | |
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51 | @EXPORT_OK = qw(parse); |
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52 | |
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53 | $::RD_ERRORS = 1; |
54 | $::RD_WARN = 1; |
55 | $::RD_HINT = 1; |
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56 | |
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57 | $GRAMMAR = q{ |
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58 | |
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59 | { |
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60 | my ( %tables, @table_comments, $table_order ); |
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61 | } |
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62 | |
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63 | startrule : statement(s) eofile { \%tables } |
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64 | |
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65 | eofile : /^\Z/ |
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66 | |
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67 | statement : create_table |
68 | | create_procedure |
69 | | create_index |
70 | | create_constraint |
71 | | comment |
72 | | use |
73 | | setuser |
74 | | if |
75 | | print |
76 | | grant |
77 | | exec |
78 | | <error> |
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79 | |
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80 | use : /use/i WORD GO |
81 | { @table_comments = () } |
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82 | |
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83 | setuser : /setuser/i NAME GO |
84 | |
85 | if : /if/i object_not_null begin if_command end GO |
86 | |
87 | if_command : grant |
88 | | create_index |
89 | | create_constraint |
90 | |
91 | object_not_null : /object_id/i '(' ident ')' /is not null/i |
92 | |
93 | print : /\s*/ /print/i /.*/ |
94 | |
95 | else : /else/i /.*/ |
96 | |
97 | begin : /begin/i |
98 | |
99 | end : /end/i |
100 | |
101 | grant : /grant/i /[^\n]*/ |
102 | |
103 | exec : exec_statement(s) GO |
104 | |
105 | exec_statement : /exec/i /[^\n]+/ |
106 | |
107 | comment : comment_start comment_middle comment_end |
108 | { |
109 | my $comment = $item[2]; |
110 | $comment =~ s/^\s*|\s*$//mg; |
111 | $comment =~ s/^\**\s*//mg; |
112 | push @table_comments, $comment; |
113 | } |
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114 | |
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115 | comment_start : /^\s*\/\*/ |
116 | |
117 | comment_end : /\s*\*\// |
118 | |
119 | comment_middle : m{([^*]+|\*(?!/))*} |
120 | |
121 | # |
122 | # Create table. |
123 | # |
124 | create_table : /create/i /table/i ident '(' create_def(s /,/) ')' lock(?) on_system(?) GO |
125 | { |
126 | my $table_owner = $item[3]{'owner'}; |
127 | my $table_name = $item[3]{'name'}; |
128 | |
129 | if ( @table_comments ) { |
130 | $tables{ $table_name }{'comments'} = [ @table_comments ]; |
131 | @table_comments = (); |
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132 | } |
133 | |
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134 | $tables{ $table_name }{'order'} = ++$table_order; |
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135 | $tables{ $table_name }{'name'} = $table_name; |
136 | $tables{ $table_name }{'owner'} = $table_owner; |
137 | $tables{ $table_name }{'system'} = $item[7]; |
138 | |
139 | my $i = 0; |
140 | for my $def ( @{ $item[5] } ) { |
141 | if ( $def->{'supertype'} eq 'field' ) { |
142 | my $field_name = $def->{'name'}; |
143 | $tables{ $table_name }{'fields'}{ $field_name } = |
144 | { %$def, order => $i }; |
145 | $i++; |
146 | |
147 | if ( $def->{'is_primary_key'} ) { |
148 | push @{ $tables{ $table_name }{'constraints'} }, { |
149 | type => 'primary_key', |
150 | fields => [ $field_name ], |
151 | }; |
152 | } |
153 | } |
154 | elsif ( $def->{'supertype'} eq 'constraint' ) { |
155 | push @{ $tables{ $table_name }{'constraints'} }, $def; |
156 | } |
157 | else { |
158 | push @{ $tables{ $table_name }{'indices'} }, $def; |
159 | } |
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160 | } |
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161 | } |
162 | |
163 | create_constraint : /create/i constraint |
164 | { |
165 | @table_comments = (); |
166 | push @{ $tables{ $item[2]{'table'} }{'constraints'} }, $item[2]; |
167 | } |
168 | |
169 | create_index : /create/i index |
170 | { |
171 | @table_comments = (); |
172 | push @{ $tables{ $item[2]{'table'} }{'indices'} }, $item[2]; |
173 | } |
174 | |
175 | create_procedure : /create/i /procedure/i procedure_body GO |
176 | { |
177 | @table_comments = (); |
178 | } |
179 | |
180 | procedure_body : not_go(s) |
181 | |
182 | not_go : /((?!go).)*/ |
183 | |
184 | create_def : field |
185 | | index |
186 | | constraint |
187 | |
188 | blank : /\s*/ |
189 | |
190 | field : field_name data_type nullable(?) |
191 | { |
192 | $return = { |
193 | supertype => 'field', |
194 | name => $item{'field_name'}, |
195 | data_type => $item{'data_type'}{'type'}, |
196 | size => $item{'data_type'}{'size'}, |
197 | nullable => $item[3][0], |
198 | # default => $item{'default_val'}[0], |
199 | # is_auto_inc => $item{'auto_inc'}[0], |
200 | # is_primary_key => $item{'primary_key'}[0], |
201 | } |
202 | } |
203 | |
204 | constraint : primary_key_constraint |
205 | | unique_constraint |
206 | |
207 | field_name : WORD |
208 | |
209 | index_name : WORD |
210 | |
211 | table_name : WORD |
212 | |
213 | data_type : WORD field_size(?) |
214 | { |
215 | $return = { |
216 | type => $item[1], |
217 | size => $item[2][0] |
218 | } |
219 | } |
220 | |
221 | lock : /lock/i /datarows/i |
222 | |
223 | field_type : WORD |
224 | |
225 | field_size : '(' num_range ')' { $item{'num_range'} } |
226 | |
227 | num_range : DIGITS ',' DIGITS |
228 | { $return = $item[1].','.$item[3] } |
229 | | DIGITS |
230 | { $return = $item[1] } |
231 | |
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232 | |
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233 | nullable : /not/i /null/i |
234 | { $return = 0 } |
235 | | /null/i |
236 | { $return = 1 } |
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237 | |
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238 | default_val : /default/i /(?:')?[\w\d.-]*(?:')?/ |
239 | { $item[2]=~s/'//g; $return=$item[2] } |
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240 | |
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241 | auto_inc : /auto_increment/i { 1 } |
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242 | |
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243 | primary_key_constraint : /primary/i /key/i index_name(?) parens_field_list |
244 | { |
245 | $return = { |
246 | supertype => 'constraint', |
247 | name => $item{'index_name'}[0], |
248 | type => 'primary_key', |
249 | fields => $item[4], |
250 | } |
251 | } |
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252 | |
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253 | unique_constraint : /unique/i clustered(?) INDEX(?) index_name(?) on_table(?) parens_field_list |
254 | { |
255 | $return = { |
256 | supertype => 'constraint', |
257 | type => 'unique', |
258 | clustered => $item[2][0], |
259 | name => $item[4][0], |
260 | table => $item[5][0], |
261 | fields => $item[6], |
262 | } |
263 | } |
264 | |
265 | clustered : /clustered/i |
266 | { $return = 1 } |
267 | | /nonclustered/i |
268 | { $return = 0 } |
269 | |
270 | INDEX : /index/i |
271 | |
272 | on_table : /on/i table_name |
273 | { $return = $item[2] } |
274 | |
275 | on_system : /on/i /system/i |
276 | { $return = 1 } |
277 | |
278 | index : clustered(?) INDEX index_name(?) on_table(?) parens_field_list |
279 | { |
280 | $return = { |
281 | supertype => 'index', |
282 | type => 'normal', |
283 | clustered => $item[1][0], |
284 | name => $item[3][0], |
285 | table => $item[4][0], |
286 | fields => $item[5], |
287 | } |
288 | } |
289 | |
290 | parens_field_list : '(' field_name(s /,/) ')' |
291 | { $item[2] } |
292 | |
293 | ident : QUOTE(?) WORD '.' WORD QUOTE(?) |
294 | { $return = { owner => $item[2], name => $item[4] } } |
295 | | WORD |
296 | { $return = { name => $item[2] } } |
297 | |
298 | GO : /^go/i |
299 | |
300 | NAME : QUOTE(?) /\w+/ QUOTE(?) |
301 | { $item[2] } |
302 | |
303 | WORD : /[\w#]+/ |
304 | |
305 | DIGITS : /\d+/ |
306 | |
307 | COMMA : ',' |
308 | |
309 | QUOTE : /'/ |
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310 | |
311 | }; |
312 | |
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313 | # ------------------------------------------------------------------- |
314 | sub parse { |
315 | my ( $translator, $data ) = @_; |
316 | my $parser = Parse::RecDescent->new($GRAMMAR); |
317 | |
318 | local $::RD_TRACE = $translator->trace ? 1 : undef; |
319 | local $DEBUG = $translator->debug; |
320 | |
321 | unless (defined $parser) { |
322 | return $translator->error("Error instantiating Parse::RecDescent ". |
323 | "instance: Bad grammer"); |
324 | } |
325 | |
326 | my $result = $parser->startrule($data); |
327 | return $translator->error( "Parse failed." ) unless defined $result; |
328 | warn Dumper( $result ) if $DEBUG; |
329 | |
330 | my $schema = $translator->schema; |
331 | my @tables = sort { |
332 | $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'} |
333 | } keys %{ $result }; |
334 | |
335 | for my $table_name ( @tables ) { |
336 | my $tdata = $result->{ $table_name }; |
337 | my $table = $schema->add_table( name => $tdata->{'name'} ) |
338 | or die "Can't create table '$table_name': ", $schema->error; |
339 | |
340 | $table->comments( $tdata->{'comments'} ); |
341 | |
342 | my @fields = sort { |
343 | $tdata->{'fields'}->{$a}->{'order'} |
344 | <=> |
345 | $tdata->{'fields'}->{$b}->{'order'} |
346 | } keys %{ $tdata->{'fields'} }; |
347 | |
348 | for my $fname ( @fields ) { |
349 | my $fdata = $tdata->{'fields'}{ $fname }; |
350 | my $field = $table->add_field( |
351 | name => $fdata->{'name'}, |
352 | data_type => $fdata->{'data_type'}, |
353 | size => $fdata->{'size'}, |
354 | default_value => $fdata->{'default'}, |
355 | is_auto_increment => $fdata->{'is_auto_inc'}, |
356 | is_nullable => $fdata->{'nullable'}, |
357 | comments => $fdata->{'comments'}, |
358 | ) or die $table->error; |
359 | |
360 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
361 | |
362 | for my $qual ( qw[ binary unsigned zerofill list ] ) { |
363 | if ( my $val = $fdata->{ $qual } || $fdata->{ uc $qual } ) { |
364 | next if ref $val eq 'ARRAY' && !@$val; |
365 | $field->extra( $qual, $val ); |
366 | } |
367 | } |
368 | |
369 | if ( $field->data_type =~ /(set|enum)/i && !$field->size ) { |
370 | my %extra = $field->extra; |
371 | my $longest = 0; |
372 | for my $len ( map { length } @{ $extra{'list'} || [] } ) { |
373 | $longest = $len if $len > $longest; |
374 | } |
375 | $field->size( $longest ) if $longest; |
376 | } |
377 | |
378 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
379 | next unless $cdata->{'type'} eq 'foreign_key'; |
380 | $cdata->{'fields'} ||= [ $field->name ]; |
381 | push @{ $tdata->{'constraints'} }, $cdata; |
382 | } |
383 | } |
384 | |
385 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
386 | my $index = $table->add_index( |
387 | name => $idata->{'name'}, |
388 | type => uc $idata->{'type'}, |
389 | fields => $idata->{'fields'}, |
390 | ) or die $table->error; |
391 | } |
392 | |
393 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
394 | my $constraint = $table->add_constraint( |
395 | name => $cdata->{'name'}, |
396 | type => $cdata->{'type'}, |
397 | fields => $cdata->{'fields'}, |
398 | reference_table => $cdata->{'reference_table'}, |
399 | reference_fields => $cdata->{'reference_fields'}, |
400 | match_type => $cdata->{'match_type'} || '', |
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401 | on_delete => $cdata->{'on_delete'} || $cdata->{'on_delete_do'}, |
402 | on_update => $cdata->{'on_update'} || $cdata->{'on_update_do'}, |
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403 | ) or die $table->error; |
404 | } |
405 | } |
406 | |
407 | return 1; |
408 | } |
409 | |
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410 | 1; |
411 | |
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412 | # ------------------------------------------------------------------- |
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413 | # Every hero becomes a bore at last. |
414 | # Ralph Waldo Emerson |
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415 | # ------------------------------------------------------------------- |
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416 | |
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417 | =pod |
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418 | |
419 | =head1 AUTHOR |
420 | |
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421 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
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422 | |
423 | =head1 SEE ALSO |
424 | |
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425 | SQL::Translator, SQL::Translator::Parser::DBI, L<http://www.midsomer.org/>. |
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426 | |
427 | =cut |