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