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1 | package SQL::Translator::Producer::SQLServer; |
2 | |
3 | # ------------------------------------------------------------------- |
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4 | # $Id$ |
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5 | # ------------------------------------------------------------------- |
6 | # Copyright (C) 2002-4 SQLFairy Authors |
7 | # |
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::Producer::SQLServer - MS SQLServer producer for SQL::Translator |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | use SQL::Translator; |
30 | |
31 | my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' ); |
32 | $t->translate; |
33 | |
34 | =head1 DESCRIPTION |
35 | |
36 | B<WARNING>B This is still fairly early code, basically a hacked version of the |
37 | Sybase Producer (thanks Sam, Paul and Ken for doing the real work ;-) |
38 | |
39 | =head1 Extra Attributes |
40 | |
41 | =over 4 |
42 | |
43 | =item field.list |
44 | |
45 | List of values for an enum field. |
46 | |
47 | =back |
48 | |
49 | =head1 TODO |
50 | |
51 | * !! Write some tests !! |
52 | * Reserved words list needs updating to SQLServer. |
53 | * Triggers, Procedures and Views havn't been tested at all. |
54 | |
55 | =cut |
56 | |
57 | use strict; |
58 | use vars qw[ $DEBUG $WARN $VERSION ]; |
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59 | $VERSION = sprintf "%d.%02d", q$Revision$ =~ /(\d+)\.(\d+)/; |
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60 | $DEBUG = 1 unless defined $DEBUG; |
61 | |
62 | use Data::Dumper; |
63 | use SQL::Translator::Schema::Constants; |
64 | use SQL::Translator::Utils qw(debug header_comment); |
65 | |
66 | my %translate = ( |
67 | date => 'datetime', |
68 | 'time' => 'datetime', |
69 | # Sybase types |
70 | #integer => 'numeric', |
71 | #int => 'numeric', |
72 | #number => 'numeric', |
73 | #money => 'money', |
74 | #varchar => 'varchar', |
75 | #varchar2 => 'varchar', |
76 | #timestamp => 'datetime', |
77 | #text => 'varchar', |
78 | #real => 'double precision', |
79 | #comment => 'text', |
80 | #bit => 'bit', |
81 | #tinyint => 'smallint', |
82 | #float => 'double precision', |
83 | #serial => 'numeric', |
84 | #boolean => 'varchar', |
85 | #char => 'char', |
86 | #long => 'varchar', |
87 | ); |
88 | |
89 | # TODO - This is still the Sybase list! |
90 | my %reserved = map { $_, 1 } qw[ |
91 | ALL ANALYSE ANALYZE AND ANY AS ASC |
92 | BETWEEN BINARY BOTH |
93 | CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS |
94 | CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER |
95 | DEFAULT DEFERRABLE DESC DISTINCT DO |
96 | ELSE END EXCEPT |
97 | FALSE FOR FOREIGN FREEZE FROM FULL |
98 | GROUP HAVING |
99 | ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL |
100 | JOIN LEADING LEFT LIKE LIMIT |
101 | NATURAL NEW NOT NOTNULL NULL |
102 | OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS |
103 | PRIMARY PUBLIC REFERENCES RIGHT |
104 | SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE |
105 | UNION UNIQUE USER USING VERBOSE WHEN WHERE |
106 | ]; |
107 | |
108 | # If these datatypes have size appended the sql fails. |
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109 | my @no_size = qw/tinyint smallint int integer bigint text bit image datetime/; |
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110 | |
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111 | my $max_id_length = 128; |
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112 | my %used_identifiers = (); |
113 | my %global_names; |
114 | my %unreserve; |
115 | my %truncated; |
116 | |
117 | =pod |
118 | |
119 | =head1 SQLServer Create Table Syntax |
120 | |
121 | TODO |
122 | |
123 | =cut |
124 | |
125 | # ------------------------------------------------------------------- |
126 | sub produce { |
127 | my $translator = shift; |
128 | $DEBUG = $translator->debug; |
129 | $WARN = $translator->show_warnings; |
130 | my $no_comments = $translator->no_comments; |
131 | my $add_drop_table = $translator->add_drop_table; |
132 | my $schema = $translator->schema; |
133 | |
134 | my $output; |
135 | $output .= header_comment."\n" unless ($no_comments); |
136 | |
137 | # Generate the DROP statements. We do this in one block here as if we |
138 | # have fkeys we need to drop in the correct order otherwise they will fail |
139 | # due to the dependancies the fkeys setup. (There is no way to turn off |
140 | # fkey checking while we sort the schema like MySQL's set |
141 | # foreign_key_checks=0) |
142 | # We assume the tables are in the correct order to set them up as you need |
143 | # to have created a table to fkey to it. So the reverse order should drop |
144 | # them properly, fingers crossed... |
145 | if ($add_drop_table) { |
146 | $output .= "--\n-- Drop tables\n--\n\n" unless $no_comments; |
147 | foreach my $table ( |
148 | sort { $b->order <=> $a->order } $schema->get_tables |
149 | ) { |
150 | my $name = unreserve($table->name); |
151 | $output .= qq{IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') DROP TABLE $name;\n\n} |
152 | } |
153 | } |
154 | |
155 | # Generate the CREATE sql |
156 | for my $table ( $schema->get_tables ) { |
157 | my $table_name = $table->name or next; |
158 | $table_name = mk_name( $table_name, '', undef, 1 ); |
159 | my $table_name_ur = unreserve($table_name) || ''; |
160 | |
161 | my ( @comments, @field_defs, @index_defs, @constraint_defs ); |
162 | |
163 | push @comments, "\n\n--\n-- Table: $table_name_ur\n--" |
164 | unless $no_comments; |
165 | |
166 | push @comments, map { "-- $_" } $table->comments; |
167 | |
168 | # |
169 | # Fields |
170 | # |
171 | my %field_name_scope; |
172 | for my $field ( $table->get_fields ) { |
173 | my $field_name = mk_name( |
174 | $field->name, '', \%field_name_scope, undef,1 |
175 | ); |
176 | my $field_name_ur = unreserve( $field_name, $table_name ); |
177 | my $field_def = qq["$field_name_ur"]; |
178 | $field_def =~ s/\"//g; |
179 | if ( $field_def =~ /identity/ ){ |
180 | $field_def =~ s/identity/pidentity/; |
181 | } |
182 | |
183 | # |
184 | # Datatype |
185 | # |
186 | my $data_type = lc $field->data_type; |
187 | my $orig_data_type = $data_type; |
188 | my %extra = $field->extra; |
189 | my $list = $extra{'list'} || []; |
190 | # \todo deal with embedded quotes |
191 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
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192 | |
193 | if ( $data_type eq 'enum' ) { |
194 | my $check_name = mk_name( |
195 | $table_name.'_'.$field_name, 'chk' ,undef, 1 |
196 | ); |
197 | push @constraint_defs, |
198 | "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))"; |
199 | $data_type .= 'character varying'; |
200 | } |
201 | elsif ( $data_type eq 'set' ) { |
202 | $data_type .= 'character varying'; |
203 | } |
204 | else { |
205 | if ( defined $translate{ $data_type } ) { |
206 | $data_type = $translate{ $data_type }; |
207 | } |
208 | else { |
209 | warn "Unknown datatype: $data_type ", |
210 | "($table_name.$field_name)\n" if $WARN; |
211 | } |
212 | } |
213 | |
214 | my $size = $field->size; |
215 | if ( grep $_ eq $data_type, @no_size) { |
216 | # SQLServer doesn't seem to like sizes on some datatypes |
217 | $size = undef; |
218 | } |
219 | elsif ( !$size ) { |
220 | if ( $data_type =~ /numeric/ ) { |
221 | $size = '9,0'; |
222 | } |
223 | elsif ( $orig_data_type eq 'text' ) { |
224 | #interpret text fields as long varchars |
225 | $size = '255'; |
226 | } |
227 | elsif ( |
228 | $data_type eq 'varchar' && |
229 | $orig_data_type eq 'boolean' |
230 | ) { |
231 | $size = '6'; |
232 | } |
233 | elsif ( $data_type eq 'varchar' ) { |
234 | $size = '255'; |
235 | } |
236 | } |
237 | |
238 | $field_def .= " $data_type"; |
239 | $field_def .= "($size)" if $size; |
240 | |
241 | $field_def .= ' IDENTITY' if $field->is_auto_increment; |
242 | |
243 | # |
1426be03 |
244 | # Not null constraint |
245 | # |
246 | unless ( $field->is_nullable ) { |
247 | $field_def .= ' NOT NULL'; |
248 | } |
249 | else { |
250 | $field_def .= ' NULL' if $data_type ne 'bit'; |
251 | } |
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252 | |
253 | # |
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254 | # Default value |
255 | # |
256 | my $default = $field->default_value; |
257 | if ( defined $default ) { |
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258 | SQL::Translator::Producer->_apply_default_value( |
259 | \$field_def, |
260 | $default, |
261 | [ |
262 | 'NULL' => \'NULL', |
263 | ], |
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264 | ); |
265 | } |
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266 | |
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267 | push @field_defs, $field_def; |
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268 | } |
269 | |
270 | # |
271 | # Constraint Declarations |
272 | # |
273 | my @constraint_decs = (); |
274 | my $c_name_default; |
275 | for my $constraint ( $table->get_constraints ) { |
276 | my $name = $constraint->name || ''; |
277 | # Make sure we get a unique name |
278 | $name = mk_name( $name, undef, undef, 1 ) if $name; |
279 | my $type = $constraint->type || NORMAL; |
280 | my @fields = map { unreserve( $_, $table_name ) } |
281 | $constraint->fields; |
282 | my @rfields = map { unreserve( $_, $table_name ) } |
283 | $constraint->reference_fields; |
284 | next unless @fields; |
285 | |
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286 | my $c_def; |
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287 | if ( $type eq PRIMARY_KEY ) { |
288 | $name ||= mk_name( $table_name, 'pk', undef,1 ); |
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289 | $c_def = |
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290 | "CONSTRAINT $name PRIMARY KEY ". |
291 | '(' . join( ', ', @fields ) . ')'; |
292 | } |
293 | elsif ( $type eq FOREIGN_KEY ) { |
294 | $name ||= mk_name( $table_name, 'fk', undef,1 ); |
295 | #$name = mk_name( ($name || $table_name), 'fk', undef,1 ); |
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296 | $c_def = |
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297 | "CONSTRAINT $name FOREIGN KEY". |
298 | ' (' . join( ', ', @fields ) . ') REFERENCES '. |
299 | $constraint->reference_table. |
300 | ' (' . join( ', ', @rfields ) . ')'; |
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301 | my $on_delete = $constraint->on_delete; |
302 | if ( defined $on_delete && $on_delete ne "NO ACTION") { |
303 | $c_def .= " ON DELETE $on_delete"; |
304 | } |
305 | my $on_update = $constraint->on_update; |
306 | if ( defined $on_update && $on_update ne "NO ACTION") { |
307 | $c_def .= " ON UPDATE $on_update"; |
308 | } |
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309 | } |
310 | elsif ( $type eq UNIQUE ) { |
311 | $name ||= mk_name( |
312 | $table_name, |
313 | $name || ++$c_name_default,undef, 1 |
314 | ); |
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315 | $c_def = |
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316 | "CONSTRAINT $name UNIQUE " . |
317 | '(' . join( ', ', @fields ) . ')'; |
318 | } |
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319 | push @constraint_defs, $c_def; |
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320 | } |
321 | |
322 | # |
323 | # Indices |
324 | # |
325 | for my $index ( $table->get_indices ) { |
326 | my $idx_name = $index->name || mk_name($table_name,'idx',undef,1); |
327 | push @index_defs, |
328 | "CREATE INDEX $idx_name ON $table_name (". |
329 | join( ', ', $index->fields ) . ");"; |
330 | } |
331 | |
332 | my $create_statement = ""; |
333 | $create_statement .= qq[CREATE TABLE $table_name_ur (\n]. |
334 | join( ",\n", |
335 | map { " $_" } @field_defs, @constraint_defs |
336 | ). |
337 | "\n);" |
338 | ; |
339 | |
340 | $output .= join( "\n\n", |
341 | @comments, |
342 | $create_statement, |
343 | @index_defs, |
344 | '' |
345 | ); |
346 | } |
347 | |
348 | # Text of view is already a 'create view' statement so no need to |
349 | # be fancy |
350 | foreach ( $schema->get_views ) { |
351 | my $name = $_->name(); |
352 | $output .= "\n\n"; |
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353 | $output .= "--\n-- View: $name\n--\n\n" unless $no_comments; |
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354 | my $text = $_->sql(); |
355 | $text =~ s/\r//g; |
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356 | $output .= "$text\nGO\n"; |
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357 | } |
358 | |
359 | # Text of procedure already has the 'create procedure' stuff |
360 | # so there is no need to do anything fancy. However, we should |
361 | # think about doing fancy stuff with granting permissions and |
362 | # so on. |
363 | foreach ( $schema->get_procedures ) { |
364 | my $name = $_->name(); |
365 | $output .= "\n\n"; |
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366 | $output .= "--\n-- Procedure: $name\n--\n\n" unless $no_comments; |
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367 | my $text = $_->sql(); |
368 | $text =~ s/\r//g; |
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369 | $output .= "$text\nGO\n"; |
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370 | } |
371 | |
372 | # Warn out how we messed with the names. |
373 | if ( $WARN ) { |
374 | if ( %truncated ) { |
375 | warn "Truncated " . keys( %truncated ) . " names:\n"; |
376 | warn "\t" . join( "\n\t", sort keys %truncated ) . "\n"; |
377 | } |
378 | if ( %unreserve ) { |
379 | warn "Encounted " . keys( %unreserve ) . |
380 | " unsafe names in schema (reserved or invalid):\n"; |
381 | warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n"; |
382 | } |
383 | } |
384 | |
385 | return $output; |
386 | } |
387 | |
388 | # ------------------------------------------------------------------- |
389 | sub mk_name { |
390 | my $basename = shift || ''; |
391 | my $type = shift || ''; |
392 | my $scope = shift || ''; |
393 | my $critical = shift || ''; |
394 | my $basename_orig = $basename; |
395 | my $max_name = $type |
396 | ? $max_id_length - (length($type) + 1) |
397 | : $max_id_length; |
398 | $basename = substr( $basename, 0, $max_name ) |
399 | if length( $basename ) > $max_name; |
400 | my $name = $type ? "${type}_$basename" : $basename; |
401 | |
402 | if ( $basename ne $basename_orig and $critical ) { |
403 | my $show_type = $type ? "+'$type'" : ""; |
404 | warn "Truncating '$basename_orig'$show_type to $max_id_length ", |
405 | "character limit to make '$name'\n" if $WARN; |
406 | $truncated{ $basename_orig } = $name; |
407 | } |
408 | |
409 | $scope ||= \%global_names; |
410 | if ( my $prev = $scope->{ $name } ) { |
411 | my $name_orig = $name; |
412 | $name .= sprintf( "%02d", ++$prev ); |
413 | substr($name, $max_id_length - 3) = "00" |
414 | if length( $name ) > $max_id_length; |
415 | |
416 | warn "The name '$name_orig' has been changed to ", |
417 | "'$name' to make it unique.\n" if $WARN; |
418 | |
419 | $scope->{ $name_orig }++; |
420 | } |
421 | $name = substr( $name, 0, $max_id_length ) |
422 | if ((length( $name ) > $max_id_length) && $critical); |
423 | $scope->{ $name }++; |
424 | return $name; |
425 | } |
426 | |
427 | # ------------------------------------------------------------------- |
428 | sub unreserve { |
429 | my $name = shift || ''; |
430 | my $schema_obj_name = shift || ''; |
431 | my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : ''; |
432 | |
433 | # also trap fields that don't begin with a letter |
434 | return $name if !$reserved{ uc $name } && $name =~ /^[a-z]/i; |
435 | |
436 | if ( $schema_obj_name ) { |
437 | ++$unreserve{"$schema_obj_name.$name"}; |
438 | } |
439 | else { |
440 | ++$unreserve{"$name (table name)"}; |
441 | } |
442 | |
443 | my $unreserve = sprintf '%s_', $name; |
444 | return $unreserve.$suffix; |
445 | } |
446 | |
447 | 1; |
448 | |
449 | # ------------------------------------------------------------------- |
450 | |
451 | =pod |
452 | |
453 | =head1 SEE ALSO |
454 | |
455 | SQL::Translator. |
456 | |
457 | =head1 AUTHORS |
458 | |
459 | Mark Addison E<lt>grommit@users.sourceforge.netE<gt> - Bulk of code from |
460 | Sybase producer, I just tweaked it for SQLServer. Thanks. |
461 | |
462 | =cut |