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1 | package SQL::Translator::Parser::Sybase; |
2 | |
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3 | =head1 NAME |
4 | |
5 | SQL::Translator::Parser::Sybase - parser for Sybase |
6 | |
7 | =head1 SYNOPSIS |
8 | |
9 | use SQL::Translator::Parser::Sybase; |
10 | |
11 | =head1 DESCRIPTION |
12 | |
0839c8a4 |
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. |
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17 | |
18 | =cut |
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19 | |
d9656bd5 |
20 | use strict; |
f27f9229 |
21 | use warnings; |
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22 | |
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23 | our ( $DEBUG, $GRAMMAR, @EXPORT_OK ); |
24 | our $VERSION = '1.59'; |
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25 | $DEBUG = 0 unless defined $DEBUG; |
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26 | |
d9656bd5 |
27 | use Data::Dumper; |
28 | use Parse::RecDescent; |
29 | use Exporter; |
30 | use base qw(Exporter); |
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31 | |
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32 | @EXPORT_OK = qw(parse); |
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33 | |
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34 | $::RD_ERRORS = 1; |
35 | $::RD_WARN = 1; |
36 | $::RD_HINT = 1; |
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37 | |
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38 | $GRAMMAR = q{ |
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39 | |
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40 | { |
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41 | my ( %tables, @table_comments, $table_order ); |
d9656bd5 |
42 | } |
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43 | |
d9656bd5 |
44 | startrule : statement(s) eofile { \%tables } |
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45 | |
d9656bd5 |
46 | eofile : /^\Z/ |
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47 | |
d9656bd5 |
48 | statement : create_table |
49 | | create_procedure |
50 | | create_index |
51 | | create_constraint |
52 | | comment |
53 | | use |
54 | | setuser |
55 | | if |
56 | | print |
57 | | grant |
58 | | exec |
59 | | <error> |
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60 | |
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61 | use : /use/i WORD GO |
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62 | { @table_comments = () } |
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63 | |
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64 | setuser : /setuser/i NAME GO |
65 | |
66 | if : /if/i object_not_null begin if_command end GO |
67 | |
68 | if_command : grant |
69 | | create_index |
70 | | create_constraint |
71 | |
72 | object_not_null : /object_id/i '(' ident ')' /is not null/i |
73 | |
74 | print : /\s*/ /print/i /.*/ |
75 | |
76 | else : /else/i /.*/ |
77 | |
78 | begin : /begin/i |
79 | |
80 | end : /end/i |
81 | |
82 | grant : /grant/i /[^\n]*/ |
83 | |
84 | exec : exec_statement(s) GO |
85 | |
86 | exec_statement : /exec/i /[^\n]+/ |
87 | |
88 | comment : comment_start comment_middle comment_end |
ea93df61 |
89 | { |
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90 | my $comment = $item[2]; |
91 | $comment =~ s/^\s*|\s*$//mg; |
92 | $comment =~ s/^\**\s*//mg; |
93 | push @table_comments, $comment; |
94 | } |
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95 | |
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96 | comment_start : /^\s*\/\*/ |
97 | |
98 | comment_end : /\s*\*\// |
99 | |
100 | comment_middle : m{([^*]+|\*(?!/))*} |
101 | |
102 | # |
103 | # Create table. |
104 | # |
105 | create_table : /create/i /table/i ident '(' create_def(s /,/) ')' lock(?) on_system(?) GO |
ea93df61 |
106 | { |
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107 | my $table_owner = $item[3]{'owner'}; |
108 | my $table_name = $item[3]{'name'}; |
109 | |
110 | if ( @table_comments ) { |
111 | $tables{ $table_name }{'comments'} = [ @table_comments ]; |
112 | @table_comments = (); |
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113 | } |
114 | |
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115 | $tables{ $table_name }{'order'} = ++$table_order; |
d9656bd5 |
116 | $tables{ $table_name }{'name'} = $table_name; |
117 | $tables{ $table_name }{'owner'} = $table_owner; |
118 | $tables{ $table_name }{'system'} = $item[7]; |
119 | |
120 | my $i = 0; |
121 | for my $def ( @{ $item[5] } ) { |
122 | if ( $def->{'supertype'} eq 'field' ) { |
123 | my $field_name = $def->{'name'}; |
ea93df61 |
124 | $tables{ $table_name }{'fields'}{ $field_name } = |
d9656bd5 |
125 | { %$def, order => $i }; |
126 | $i++; |
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127 | |
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128 | if ( $def->{'is_primary_key'} ) { |
129 | push @{ $tables{ $table_name }{'constraints'} }, { |
130 | type => 'primary_key', |
131 | fields => [ $field_name ], |
132 | }; |
133 | } |
134 | } |
135 | elsif ( $def->{'supertype'} eq 'constraint' ) { |
136 | push @{ $tables{ $table_name }{'constraints'} }, $def; |
137 | } |
138 | else { |
139 | push @{ $tables{ $table_name }{'indices'} }, $def; |
140 | } |
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141 | } |
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142 | } |
143 | |
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144 | create_constraint : /create/i constraint |
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145 | { |
146 | @table_comments = (); |
147 | push @{ $tables{ $item[2]{'table'} }{'constraints'} }, $item[2]; |
148 | } |
149 | |
150 | create_index : /create/i index |
151 | { |
152 | @table_comments = (); |
153 | push @{ $tables{ $item[2]{'table'} }{'indices'} }, $item[2]; |
154 | } |
155 | |
156 | create_procedure : /create/i /procedure/i procedure_body GO |
157 | { |
158 | @table_comments = (); |
159 | } |
160 | |
161 | procedure_body : not_go(s) |
162 | |
163 | not_go : /((?!go).)*/ |
164 | |
165 | create_def : field |
166 | | index |
167 | | constraint |
168 | |
169 | blank : /\s*/ |
170 | |
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171 | field : field_name data_type nullable(?) |
172 | { |
173 | $return = { |
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174 | supertype => 'field', |
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175 | name => $item{'field_name'}, |
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176 | data_type => $item{'data_type'}{'type'}, |
177 | size => $item{'data_type'}{'size'}, |
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178 | nullable => $item[3][0], |
179 | # default => $item{'default_val'}[0], |
180 | # is_auto_inc => $item{'auto_inc'}[0], |
181 | # is_primary_key => $item{'primary_key'}[0], |
182 | } |
d9656bd5 |
183 | } |
184 | |
185 | constraint : primary_key_constraint |
186 | | unique_constraint |
187 | |
188 | field_name : WORD |
189 | |
190 | index_name : WORD |
191 | |
192 | table_name : WORD |
193 | |
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194 | data_type : WORD field_size(?) |
195 | { |
196 | $return = { |
197 | type => $item[1], |
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198 | size => $item[2][0] |
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199 | } |
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200 | } |
201 | |
202 | lock : /lock/i /datarows/i |
203 | |
204 | field_type : WORD |
205 | |
206 | field_size : '(' num_range ')' { $item{'num_range'} } |
207 | |
208 | num_range : DIGITS ',' DIGITS |
209 | { $return = $item[1].','.$item[3] } |
210 | | DIGITS |
211 | { $return = $item[1] } |
212 | |
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213 | |
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214 | nullable : /not/i /null/i |
215 | { $return = 0 } |
216 | | /null/i |
217 | { $return = 1 } |
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218 | |
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219 | default_val : /default/i /(?:')?[\w\d.-]*(?:')?/ |
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220 | { $item[2]=~s/'//g; $return=$item[2] } |
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221 | |
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222 | auto_inc : /auto_increment/i { 1 } |
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223 | |
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224 | primary_key_constraint : /primary/i /key/i index_name(?) parens_field_list |
225 | { |
226 | $return = { |
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227 | supertype => 'constraint', |
228 | name => $item{'index_name'}[0], |
229 | type => 'primary_key', |
230 | fields => $item[4], |
ea93df61 |
231 | } |
d9656bd5 |
232 | } |
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233 | |
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234 | unique_constraint : /unique/i clustered(?) INDEX(?) index_name(?) on_table(?) parens_field_list |
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235 | { |
236 | $return = { |
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237 | supertype => 'constraint', |
238 | type => 'unique', |
239 | clustered => $item[2][0], |
240 | name => $item[4][0], |
241 | table => $item[5][0], |
242 | fields => $item[6], |
ea93df61 |
243 | } |
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244 | } |
245 | |
246 | clustered : /clustered/i |
247 | { $return = 1 } |
248 | | /nonclustered/i |
249 | { $return = 0 } |
250 | |
251 | INDEX : /index/i |
252 | |
253 | on_table : /on/i table_name |
254 | { $return = $item[2] } |
255 | |
256 | on_system : /on/i /system/i |
257 | { $return = 1 } |
258 | |
259 | index : clustered(?) INDEX index_name(?) on_table(?) parens_field_list |
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260 | { |
261 | $return = { |
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262 | supertype => 'index', |
263 | type => 'normal', |
264 | clustered => $item[1][0], |
265 | name => $item[3][0], |
266 | table => $item[4][0], |
267 | fields => $item[5], |
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268 | } |
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269 | } |
270 | |
271 | parens_field_list : '(' field_name(s /,/) ')' |
272 | { $item[2] } |
273 | |
274 | ident : QUOTE(?) WORD '.' WORD QUOTE(?) |
275 | { $return = { owner => $item[2], name => $item[4] } } |
276 | | WORD |
277 | { $return = { name => $item[2] } } |
278 | |
279 | GO : /^go/i |
280 | |
281 | NAME : QUOTE(?) /\w+/ QUOTE(?) |
282 | { $item[2] } |
283 | |
284 | WORD : /[\w#]+/ |
285 | |
286 | DIGITS : /\d+/ |
287 | |
288 | COMMA : ',' |
289 | |
290 | QUOTE : /'/ |
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291 | |
292 | }; |
293 | |
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294 | sub parse { |
295 | my ( $translator, $data ) = @_; |
296 | my $parser = Parse::RecDescent->new($GRAMMAR); |
297 | |
298 | local $::RD_TRACE = $translator->trace ? 1 : undef; |
299 | local $DEBUG = $translator->debug; |
300 | |
301 | unless (defined $parser) { |
302 | return $translator->error("Error instantiating Parse::RecDescent ". |
303 | "instance: Bad grammer"); |
304 | } |
305 | |
306 | my $result = $parser->startrule($data); |
307 | return $translator->error( "Parse failed." ) unless defined $result; |
308 | warn Dumper( $result ) if $DEBUG; |
309 | |
310 | my $schema = $translator->schema; |
ea93df61 |
311 | my @tables = sort { |
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312 | $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'} |
313 | } keys %{ $result }; |
314 | |
315 | for my $table_name ( @tables ) { |
316 | my $tdata = $result->{ $table_name }; |
ea93df61 |
317 | my $table = $schema->add_table( name => $tdata->{'name'} ) |
d9656bd5 |
318 | or die "Can't create table '$table_name': ", $schema->error; |
319 | |
320 | $table->comments( $tdata->{'comments'} ); |
321 | |
ea93df61 |
322 | my @fields = sort { |
323 | $tdata->{'fields'}->{$a}->{'order'} |
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324 | <=> |
325 | $tdata->{'fields'}->{$b}->{'order'} |
326 | } keys %{ $tdata->{'fields'} }; |
327 | |
328 | for my $fname ( @fields ) { |
329 | my $fdata = $tdata->{'fields'}{ $fname }; |
330 | my $field = $table->add_field( |
331 | name => $fdata->{'name'}, |
332 | data_type => $fdata->{'data_type'}, |
333 | size => $fdata->{'size'}, |
334 | default_value => $fdata->{'default'}, |
335 | is_auto_increment => $fdata->{'is_auto_inc'}, |
336 | is_nullable => $fdata->{'nullable'}, |
337 | comments => $fdata->{'comments'}, |
338 | ) or die $table->error; |
339 | |
340 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
341 | |
342 | for my $qual ( qw[ binary unsigned zerofill list ] ) { |
343 | if ( my $val = $fdata->{ $qual } || $fdata->{ uc $qual } ) { |
344 | next if ref $val eq 'ARRAY' && !@$val; |
345 | $field->extra( $qual, $val ); |
346 | } |
347 | } |
348 | |
349 | if ( $field->data_type =~ /(set|enum)/i && !$field->size ) { |
350 | my %extra = $field->extra; |
351 | my $longest = 0; |
352 | for my $len ( map { length } @{ $extra{'list'} || [] } ) { |
353 | $longest = $len if $len > $longest; |
354 | } |
355 | $field->size( $longest ) if $longest; |
356 | } |
357 | |
358 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
359 | next unless $cdata->{'type'} eq 'foreign_key'; |
360 | $cdata->{'fields'} ||= [ $field->name ]; |
361 | push @{ $tdata->{'constraints'} }, $cdata; |
362 | } |
363 | } |
364 | |
365 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
366 | my $index = $table->add_index( |
367 | name => $idata->{'name'}, |
368 | type => uc $idata->{'type'}, |
369 | fields => $idata->{'fields'}, |
370 | ) or die $table->error; |
371 | } |
372 | |
373 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
374 | my $constraint = $table->add_constraint( |
375 | name => $cdata->{'name'}, |
376 | type => $cdata->{'type'}, |
377 | fields => $cdata->{'fields'}, |
378 | reference_table => $cdata->{'reference_table'}, |
379 | reference_fields => $cdata->{'reference_fields'}, |
380 | match_type => $cdata->{'match_type'} || '', |
100684f3 |
381 | on_delete => $cdata->{'on_delete'} || $cdata->{'on_delete_do'}, |
382 | on_update => $cdata->{'on_update'} || $cdata->{'on_update_do'}, |
d9656bd5 |
383 | ) or die $table->error; |
384 | } |
385 | } |
386 | |
387 | return 1; |
388 | } |
389 | |
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390 | 1; |
391 | |
d9656bd5 |
392 | # ------------------------------------------------------------------- |
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393 | # Every hero becomes a bore at last. |
394 | # Ralph Waldo Emerson |
d9656bd5 |
395 | # ------------------------------------------------------------------- |
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396 | |
d529894e |
397 | =pod |
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398 | |
399 | =head1 AUTHOR |
400 | |
11ad2df9 |
401 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
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402 | |
403 | =head1 SEE ALSO |
404 | |
0839c8a4 |
405 | SQL::Translator, SQL::Translator::Parser::DBI, L<http://www.midsomer.org/>. |
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406 | |
407 | =cut |