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1 | package SQL::Translator::Parser::DBI::SQLServer; |
2 | |
3 | # ------------------------------------------------------------------- |
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4 | # $Id: SQLServer.pm 1440 2009-01-17 16:31:57Z jawnsy $ |
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5 | # ------------------------------------------------------------------- |
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6 | # Copyright (C) 2002-2009 SQLFairy Authors |
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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::Parser::DBI::SQLServer - parser for SQL Server through DBD::ODBC |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | See SQL::Translator::Parser::DBI. |
30 | |
31 | =head1 DESCRIPTION |
32 | |
33 | Uses DBI Catalog Methods. |
34 | |
35 | =cut |
36 | |
37 | use strict; |
38 | use DBI; |
39 | use SQL::Translator::Schema; |
40 | use Data::Dumper; |
41 | |
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42 | use vars qw[ $DEBUG @EXPORT_OK ]; |
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43 | $DEBUG = 0 unless defined $DEBUG; |
44 | |
45 | no strict 'refs'; |
46 | |
47 | # ------------------------------------------------------------------- |
48 | sub parse { |
49 | my ( $tr, $dbh ) = @_; |
50 | |
51 | if ($dbh->{FetchHashKeyName} ne 'NAME_uc') { |
52 | warn "setting dbh attribute {FetchHashKeyName} to NAME_uc"; |
53 | $dbh->{FetchHashKeyName} = 'NAME_uc'; |
54 | } |
55 | |
56 | if ($dbh->{ChopBlanks} != 1) { |
57 | warn "setting dbh attribute {ChopBlanks} to 1"; |
58 | $dbh->{ChopBlanks} = 1; |
59 | } |
60 | |
61 | my $schema = $tr->schema; |
62 | |
63 | my ($sth, @tables, $columns); |
64 | my $stuff; |
65 | |
66 | ### Columns |
67 | |
68 | # it is much quicker to slurp back everything all at once rather |
69 | # than make repeated calls |
70 | |
71 | $sth = $dbh->column_info(undef, undef, undef, undef); |
72 | |
73 | |
74 | foreach my $c (@{$sth->fetchall_arrayref({})}) { |
75 | $columns |
76 | ->{$c->{TABLE_CAT}} |
77 | ->{$c->{TABLE_SCHEM}} |
78 | ->{$c->{TABLE_NAME}} |
79 | ->{columns} |
80 | ->{$c->{COLUMN_NAME}}= $c; |
81 | } |
82 | |
83 | ### Tables and views |
84 | |
85 | # Get a list of the tables and views. |
86 | $sth = $dbh->table_info(); |
87 | @tables = @{$sth->fetchall_arrayref({})}; |
88 | |
89 | my $h = $dbh->selectall_arrayref(q{ |
90 | SELECT o.name, colid,c.text |
91 | FROM syscomments c |
92 | JOIN sysobjects o |
93 | ON c.id = o.id |
94 | WHERE o.type ='V' |
95 | ORDER BY o.name, |
96 | c.colid |
97 | } |
98 | ); |
99 | |
100 | # View text |
101 | # I had always thought there was something 'hard' about |
102 | # reconstructing text from syscomments .. |
103 | # this seems to work fine and is certainly not complicated! |
104 | |
105 | foreach (@{$h}) { |
106 | $stuff->{view}->{$_->[0]}->{text} .= $_->[2]; |
107 | } |
108 | |
109 | #### objects with indexes. |
110 | map { |
111 | $stuff->{indexes}->{$_->[0]}++ |
112 | if defined; |
113 | } @{$dbh->selectall_arrayref("SELECT DISTINCT object_name(id) |
114 | FROM sysindexes |
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115 | WHERE indid > 0 and indid < 255 and |
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116 | name not like '_WA_Sys%'")}; |
117 | |
118 | ## slurp objects |
119 | map { |
120 | $stuff->{$_->[1]}->{$_->[0]} = $_; |
121 | } @{$dbh->selectall_arrayref("SELECT name,type, id FROM sysobjects")}; |
122 | |
123 | |
124 | ### Procedures |
125 | |
126 | # This gets legitimate procedures by used the 'supported' API: sp_stored_procedures |
127 | map { |
128 | my $n = $_->{PROCEDURE_NAME}; |
129 | $n =~ s/;\d+$//; # Ignore versions for now |
130 | $_->{name} = $n; |
131 | $stuff->{procedures}->{$n} = $_; |
132 | } values %{$dbh->selectall_hashref("sp_stored_procedures", 'PROCEDURE_NAME')}; |
133 | |
134 | |
135 | # And this blasts in the text of 'legit' stored procedures. Do |
136 | # this rather than calling sp_helptext in a loop. |
137 | |
138 | $h = $dbh->selectall_arrayref(q{ |
139 | SELECT o.name, colid,c.text |
140 | FROM syscomments c |
141 | JOIN sysobjects o |
142 | ON c.id = o.id |
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143 | WHERE o.type in ('P', 'FN', 'TF', 'IF') |
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144 | } |
145 | ); |
146 | |
147 | foreach (@{$h}) { |
148 | $stuff->{procedures}->{$_->[0]}->{text} .= $_->[2] |
149 | if (defined($stuff->{procedures}->{$_->[0]})); |
150 | } |
151 | |
152 | ### Defaults |
153 | ### Rules |
154 | ### Bind Defaults |
155 | ### Bind Rules |
156 | |
157 | ### Triggers |
158 | # Since the 'target' of the trigger is defined in the text, we will |
159 | # just create them independently for now rather than associating them |
160 | # with a table. |
161 | |
162 | $h = $dbh->selectall_arrayref(q{ |
163 | SELECT o.name, colid,c.text |
164 | FROM syscomments c |
165 | JOIN sysobjects o |
166 | ON c.id = o.id |
167 | JOIN sysobjects o1 |
168 | ON (o.id = o1.instrig OR o.id = o1.deltrig or o.id = o1.updtrig) |
169 | WHERE o.type ='TR' |
170 | ORDER BY o.name, |
171 | c.colid |
172 | } |
173 | ); |
174 | foreach (@{$h}) { |
175 | $stuff->{triggers}->{$_->[0]}->{text} .= $_->[2]; |
176 | } |
177 | |
178 | ### References |
179 | ### Keys |
180 | |
181 | ### Types |
182 | # Not sure what to do with these? |
183 | $stuff->{type_info_all} = $dbh->type_info_all; |
184 | |
185 | ### Tables |
186 | # According to the DBI docs, these can be |
187 | |
188 | # "TABLE" |
189 | # "VIEW" |
190 | # "SYSTEM TABLE" |
191 | # "GLOBAL TEMPORARY", |
192 | # "LOCAL TEMPORARY" |
193 | # "ALIAS" |
194 | # "SYNONYM" |
195 | |
196 | foreach my $table_info (@tables) { |
197 | next |
198 | unless (defined($table_info->{TABLE_TYPE})); |
199 | |
200 | if ($table_info->{TABLE_TYPE} eq "TABLE") { |
201 | my $table = $schema->add_table( |
202 | name => |
203 | $table_info->{TABLE_NAME}, |
204 | type => |
205 | $table_info->{TABLE_TYPE}, |
206 | ) || die $schema->error; |
207 | |
208 | # find the associated columns |
209 | |
210 | my $cols = |
211 | $columns->{$table_info->{TABLE_CAT}} |
212 | ->{$table_info->{TABLE_SCHEM}} |
213 | ->{$table_info->{TABLE_NAME}} |
214 | ->{columns}; |
215 | |
216 | foreach my $c (values %{$cols}) { |
217 | my $is_auto_increment = $c->{TYPE_NAME} =~ s#(\(\))? identity##i; |
218 | my $f = $table->add_field( |
219 | name => $c->{COLUMN_NAME}, |
220 | data_type => $c->{TYPE_NAME}, |
221 | order => $c->{ORDINAL_POSITION}, |
222 | size => $c->{COLUMN_SIZE}, |
223 | ) || die $table->error; |
224 | $f->is_nullable($c->{NULLABLE} == 1); |
225 | $f->is_auto_increment($is_auto_increment); |
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226 | if ( defined $c->{COLUMN_DEF}) { |
227 | $c->{COLUMN_DEF} =~ s#\('?(.*?)'?\)#$1#; |
228 | $f->default_value($c->{COLUMN_DEF}); |
229 | } |
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230 | } |
231 | |
232 | # add in primary key |
233 | my $h = $dbh->selectall_hashref("sp_pkeys |
234 | $table_info->{TABLE_NAME}", 'COLUMN_NAME'); |
235 | if (scalar keys %{$h} >= 1) { |
236 | my @c = map { |
237 | $_->{COLUMN_NAME} |
238 | } sort { |
239 | $a->{KEY_SEQ} <=> $b->{KEY_SEQ} |
240 | } values %{$h}; |
241 | |
242 | $table->primary_key(@c) |
243 | if (scalar @c); |
244 | } |
245 | |
246 | # add in foreign keys |
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247 | $h = $dbh->selectall_hashref("sp_fkeys NULL, |
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248 | \@fktable_name = '$table_info->{TABLE_NAME}'", 'FK_NAME'); |
249 | foreach my $fk ( values %{$h} ) { |
250 | my $constraint = $table->add_constraint( name => $fk->{FK_NAME}, |
251 | fields => [$fk->{FKCOLUMN_NAME}], |
252 | ); |
253 | $constraint->type("FOREIGN_KEY"); |
254 | $constraint->on_delete( |
255 | $fk->{DELETE_RULE} == 0 ? "CASCADE" : |
256 | $fk->{DELETE_RULE} == 1 ? "NO ACTION" : "SET_NULL" |
257 | ); |
258 | $constraint->on_update( |
259 | $fk->{UPDATE_RULE} == 0 ? "CASCADE" : |
260 | $fk->{UPDATE_RULE} == 1 ? "NO ACTION" : "SET_NULL" |
261 | ); |
262 | $constraint->reference_table($fk->{PKTABLE_NAME}); |
263 | } |
264 | |
265 | # add in any indexes ... how do we tell if the index has |
266 | # already been created as part of a primary key or other |
267 | # constraint? |
268 | |
269 | if (defined($stuff->{indexes}->{$table_info->{TABLE_NAME}})){ |
270 | my $h = $dbh->selectall_hashref("sp_helpindex |
271 | $table_info->{TABLE_NAME}", 'INDEX_NAME'); |
272 | foreach (values %{$h}) { |
273 | my $fields = $_->{'INDEX_KEYS'}; |
274 | $fields =~ s/\s*//g; |
275 | my $i = $table->add_index( |
276 | name => |
277 | $_->{INDEX_NAME}, |
278 | fields => $fields, |
279 | ); |
280 | if ($_->{'INDEX_DESCRIPTION'} =~ /unique/i) { |
281 | $i->type('unique'); |
282 | |
283 | # we could make this a primary key if there |
284 | # isn't already one defined and if there |
285 | # aren't any nullable columns in thisindex. |
286 | |
287 | if (!defined($table->primary_key())) { |
288 | $table->primary_key($fields) |
289 | unless grep { |
290 | $table->get_field($_)->is_nullable() |
291 | } split(/,\s*/, $fields); |
292 | } |
293 | } |
294 | } |
295 | } |
296 | } elsif ($table_info->{TABLE_TYPE} eq 'VIEW') { |
297 | next if $table_info->{TABLE_NAME} eq 'sysconstraints' |
298 | || $table_info->{TABLE_NAME} eq 'syssegments'; |
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299 | next if !$stuff->{view}->{$table_info->{TABLE_NAME}}->{text}; |
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300 | my $view = $schema->add_view( |
301 | name => |
302 | $table_info->{TABLE_NAME}, |
303 | ); |
304 | |
305 | |
306 | my $cols = |
307 | $columns->{$table_info->{TABLE_CAT}} |
308 | ->{$table_info->{TABLE_SCHEM}} |
309 | ->{$table_info->{TABLE_NAME}} |
310 | ->{columns}; |
311 | |
312 | $view->fields(map { |
313 | $_->{COLUMN_NAME} |
314 | } sort { |
315 | $a->{ORDINAL_POSITION} <=> $b->{ORDINAL_POSITION} |
316 | } values %{$cols} |
317 | ); |
318 | |
319 | $view->sql($stuff->{view}->{$table_info->{TABLE_NAME}}->{text}) |
320 | if (defined($stuff->{view}->{$table_info->{TABLE_NAME}}->{text})); |
321 | } |
322 | } |
323 | |
324 | foreach my $p (values %{$stuff->{procedures}}) { |
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325 | next if !$p->{text}; |
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326 | my $proc = $schema->add_procedure( |
327 | name => $p->{name}, |
328 | owner => $p->{PROCEDURE_OWNER}, |
329 | comments => $p->{REMARKS}, |
330 | sql => $p->{text}, |
331 | ); |
332 | |
333 | } |
334 | |
335 | ### Permissions |
336 | ### Groups |
337 | ### Users |
338 | ### Aliases |
339 | ### Logins |
340 | return 1; |
341 | } |
342 | |
343 | 1; |
344 | |
345 | # ------------------------------------------------------------------- |
346 | |
347 | =pod |
348 | |
349 | =head1 AUTHOR |
350 | |
351 | Chris Hilton E<lt>chris@dctank.comE<gt> - Bulk of code from |
352 | DBI-Sybase parser, I just tweaked it for SQLServer. Thanks. |
353 | |
354 | =head1 SEE ALSO |
355 | |
356 | DBI, DBD::ODBC, SQL::Translator::Schema. |
357 | |
358 | =cut |