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f8f0253c |
1 | package SQL::Translator::Producer::PostgreSQL; |
2 | |
3 | # ------------------------------------------------------------------- |
20770e44 |
4 | # $Id: PostgreSQL.pm,v 1.20 2003-10-15 19:07:13 kycl4rk Exp $ |
f8f0253c |
5 | # ------------------------------------------------------------------- |
abfa405a |
6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>, |
7 | # darren chamberlain <darren@cpan.org>, |
8 | # Chris Mungall <cjm@fruitfly.org> |
f8f0253c |
9 | # |
10 | # This program is free software; you can redistribute it and/or |
11 | # modify it under the terms of the GNU General Public License as |
12 | # published by the Free Software Foundation; version 2. |
13 | # |
14 | # This program is distributed in the hope that it will be useful, but |
15 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | # General Public License for more details. |
18 | # |
19 | # You should have received a copy of the GNU General Public License |
20 | # along with this program; if not, write to the Free Software |
21 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
22 | # 02111-1307 USA |
23 | # ------------------------------------------------------------------- |
24 | |
96844cae |
25 | =head1 NAME |
26 | |
27 | SQL::Translator::Producer::PostgreSQL - PostgreSQL producer for SQL::Translator |
28 | |
20770e44 |
29 | =head1 SYNOPSIS |
30 | |
31 | my $t = SQL::Translator->new( parser => '...', producer => 'PostgreSQL' ); |
32 | $t->translate; |
33 | |
34 | =head1 DESCRIPTION |
35 | |
36 | Creates a DDL suitable for PostgreSQL. Very heavily based on the Oracle |
37 | producer. |
38 | |
96844cae |
39 | =cut |
40 | |
f8f0253c |
41 | use strict; |
96844cae |
42 | use vars qw[ $DEBUG $WARN $VERSION ]; |
20770e44 |
43 | $VERSION = sprintf "%d.%02d", q$Revision: 1.20 $ =~ /(\d+)\.(\d+)/; |
f8f0253c |
44 | $DEBUG = 1 unless defined $DEBUG; |
45 | |
0c43e0a1 |
46 | use SQL::Translator::Schema::Constants; |
5ee19df8 |
47 | use SQL::Translator::Utils qw(header_comment); |
f8f0253c |
48 | use Data::Dumper; |
49 | |
d529894e |
50 | my %translate = ( |
51 | # |
52 | # MySQL types |
53 | # |
54 | bigint => 'bigint', |
4328d7bd |
55 | double => 'numeric', |
56 | decimal => 'numeric', |
57 | float => 'numeric', |
d529894e |
58 | int => 'integer', |
59 | mediumint => 'integer', |
60 | smallint => 'smallint', |
61 | tinyint => 'smallint', |
c8c17a58 |
62 | char => 'character', |
da8e499e |
63 | varchar => 'character varying', |
d529894e |
64 | longtext => 'text', |
65 | mediumtext => 'text', |
66 | text => 'text', |
67 | tinytext => 'text', |
68 | tinyblob => 'bytea', |
69 | blob => 'bytea', |
70 | mediumblob => 'bytea', |
71 | longblob => 'bytea', |
da8e499e |
72 | enum => 'character varying', |
73 | set => 'character varying', |
d529894e |
74 | date => 'date', |
75 | datetime => 'timestamp', |
76 | time => 'date', |
77 | timestamp => 'timestamp', |
78 | year => 'date', |
79 | |
80 | # |
81 | # Oracle types |
82 | # |
96844cae |
83 | number => 'integer', |
c8c17a58 |
84 | char => 'character', |
da8e499e |
85 | varchar2 => 'character varying', |
96844cae |
86 | long => 'text', |
87 | CLOB => 'bytea', |
88 | date => 'date', |
89 | |
90 | # |
91 | # Sybase types |
92 | # |
93 | int => 'integer', |
94 | money => 'money', |
da8e499e |
95 | varchar => 'character varying', |
96844cae |
96 | datetime => 'timestamp', |
97 | text => 'text', |
4328d7bd |
98 | real => 'numeric', |
96844cae |
99 | comment => 'text', |
100 | bit => 'bit', |
101 | tinyint => 'smallint', |
4328d7bd |
102 | float => 'numeric', |
d529894e |
103 | ); |
104 | |
96844cae |
105 | my %reserved = map { $_, 1 } qw[ |
106 | ALL ANALYSE ANALYZE AND ANY AS ASC |
107 | BETWEEN BINARY BOTH |
108 | CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS |
109 | CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER |
110 | DEFAULT DEFERRABLE DESC DISTINCT DO |
111 | ELSE END EXCEPT |
112 | FALSE FOR FOREIGN FREEZE FROM FULL |
113 | GROUP HAVING |
114 | ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL |
115 | JOIN LEADING LEFT LIKE LIMIT |
116 | NATURAL NEW NOT NOTNULL NULL |
117 | OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS |
118 | PRIMARY PUBLIC REFERENCES RIGHT |
119 | SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE |
120 | UNION UNIQUE USER USING VERBOSE WHEN WHERE |
121 | ]; |
d529894e |
122 | |
96844cae |
123 | my $max_id_length = 30; |
124 | my %used_identifiers = (); |
125 | my %global_names; |
126 | my %unreserve; |
127 | my %truncated; |
128 | |
129 | =pod |
130 | |
131 | =head1 PostgreSQL Create Table Syntax |
132 | |
133 | CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( |
134 | { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ] |
135 | | table_constraint } [, ... ] |
136 | ) |
137 | [ INHERITS ( parent_table [, ... ] ) ] |
138 | [ WITH OIDS | WITHOUT OIDS ] |
139 | |
140 | where column_constraint is: |
141 | |
142 | [ CONSTRAINT constraint_name ] |
143 | { NOT NULL | NULL | UNIQUE | PRIMARY KEY | |
144 | CHECK (expression) | |
145 | REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] |
146 | [ ON DELETE action ] [ ON UPDATE action ] } |
147 | [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
148 | |
149 | and table_constraint is: |
150 | |
151 | [ CONSTRAINT constraint_name ] |
152 | { UNIQUE ( column_name [, ... ] ) | |
153 | PRIMARY KEY ( column_name [, ... ] ) | |
154 | CHECK ( expression ) | |
155 | FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ] |
156 | [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] } |
157 | [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
158 | |
da8e499e |
159 | =head1 Create Index Syntax |
160 | |
161 | CREATE [ UNIQUE ] INDEX index_name ON table |
162 | [ USING acc_method ] ( column [ ops_name ] [, ...] ) |
163 | [ WHERE predicate ] |
164 | CREATE [ UNIQUE ] INDEX index_name ON table |
165 | [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) |
166 | [ WHERE predicate ] |
167 | |
96844cae |
168 | =cut |
f8f0253c |
169 | |
96844cae |
170 | # ------------------------------------------------------------------- |
f8f0253c |
171 | sub produce { |
a1d94525 |
172 | my $translator = shift; |
173 | $DEBUG = $translator->debug; |
174 | $WARN = $translator->show_warnings; |
175 | my $no_comments = $translator->no_comments; |
176 | my $add_drop_table = $translator->add_drop_table; |
177 | my $schema = $translator->schema; |
96844cae |
178 | |
da8e499e |
179 | my $output; |
5ee19df8 |
180 | $output .= header_comment unless ($no_comments); |
50840472 |
181 | my %used_index_names; |
96844cae |
182 | |
021dbce8 |
183 | my @fks; |
0c43e0a1 |
184 | for my $table ( $schema->get_tables ) { |
185 | my $table_name = $table->name or next; |
da8e499e |
186 | $table_name = mk_name( $table_name, '', undef, 1 ); |
187 | my $table_name_ur = unreserve($table_name); |
188 | |
0c43e0a1 |
189 | my ( @comments, @field_defs, @sequence_defs, @constraint_defs ); |
96844cae |
190 | |
da8e499e |
191 | push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments; |
f8f0253c |
192 | |
193 | # |
194 | # Fields |
195 | # |
96844cae |
196 | my %field_name_scope; |
0c43e0a1 |
197 | for my $field ( $table->get_fields ) { |
96844cae |
198 | my $field_name = mk_name( |
0c43e0a1 |
199 | $field->name, '', \%field_name_scope, 1 |
96844cae |
200 | ); |
201 | my $field_name_ur = unreserve( $field_name, $table_name ); |
0c43e0a1 |
202 | my $field_def = qq["$field_name_ur"]; |
da8e499e |
203 | |
204 | # |
205 | # Datatype |
206 | # |
0c43e0a1 |
207 | my @size = $field->size; |
208 | my $data_type = lc $field->data_type; |
209 | my %extra = $field->extra; |
210 | my $list = $extra{'list'} || []; |
4524cf01 |
211 | # todo deal with embedded quotes |
212 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
da8e499e |
213 | my $seq_name; |
214 | |
215 | if ( $data_type eq 'enum' ) { |
216 | my $len = 0; |
217 | $len = ($len < length($_)) ? length($_) : $len for (@$list); |
4524cf01 |
218 | my $chk_name = mk_name( $table_name.'_'.$field_name, 'chk' ); |
0c43e0a1 |
219 | push @constraint_defs, |
4328d7bd |
220 | qq[Constraint "$chk_name" CHECK ("$field_name" ]. |
221 | qq[IN ($commalist))]; |
0c43e0a1 |
222 | $data_type = 'character varying'; |
da8e499e |
223 | } |
224 | elsif ( $data_type eq 'set' ) { |
0c43e0a1 |
225 | $data_type = 'character varying'; |
da8e499e |
226 | } |
0c43e0a1 |
227 | elsif ( $field->is_auto_increment ) { |
50840472 |
228 | if ( defined $size[0] && $size[0] > 11 ) { |
4328d7bd |
229 | $data_type = 'bigserial'; |
50840472 |
230 | } |
231 | else { |
4328d7bd |
232 | $data_type = 'serial'; |
50840472 |
233 | } |
234 | undef @size; |
da8e499e |
235 | } |
236 | else { |
237 | $data_type = defined $translate{ $data_type } ? |
238 | $translate{ $data_type } : |
61aa0c9d |
239 | $data_type; |
0c43e0a1 |
240 | } |
241 | |
50840472 |
242 | if ( $data_type =~ /timestamp/i ) { |
c8c17a58 |
243 | if ( defined $size[0] && $size[0] > 6 ) { |
244 | $size[0] = 6; |
50840472 |
245 | } |
246 | } |
247 | |
248 | if ( $data_type eq 'integer' ) { |
249 | if ( defined $size[0] ) { |
4328d7bd |
250 | if ( $size[0] > 10 ) { |
251 | $data_type = 'bigint'; |
50840472 |
252 | } |
253 | elsif ( $size[0] < 5 ) { |
4328d7bd |
254 | $data_type = 'smallint'; |
50840472 |
255 | } |
256 | else { |
4328d7bd |
257 | $data_type = 'integer'; |
50840472 |
258 | } |
259 | } |
260 | else { |
4328d7bd |
261 | $data_type = 'integer'; |
50840472 |
262 | } |
50840472 |
263 | } |
4328d7bd |
264 | |
265 | # |
266 | # PG doesn't need a size for integers or text |
267 | # |
268 | undef @size if $data_type =~ m/(integer|smallint|bigint|text)/; |
50840472 |
269 | |
0c43e0a1 |
270 | $field_def .= " $data_type"; |
271 | |
272 | if ( defined $size[0] && $size[0] > 0 ) { |
4328d7bd |
273 | $field_def .= '(' . join( ',', @size ) . ')'; |
f8f0253c |
274 | } |
275 | |
da8e499e |
276 | # |
c8c17a58 |
277 | # Default value -- disallow for timestamps |
da8e499e |
278 | # |
c8c17a58 |
279 | my $default = $data_type =~ /(timestamp|date)/i |
280 | ? undef : $field->default_value; |
0c43e0a1 |
281 | if ( defined $default ) { |
282 | $field_def .= sprintf( ' DEFAULT %s', |
283 | ( $field->is_auto_increment && $seq_name ) |
da8e499e |
284 | ? qq[nextval('"$seq_name"'::text)] : |
0c43e0a1 |
285 | ( $default =~ m/null/i ) ? 'NULL' : "'$default'" |
da8e499e |
286 | ); |
287 | } |
f8f0253c |
288 | |
da8e499e |
289 | # |
290 | # Not null constraint |
291 | # |
0c43e0a1 |
292 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
f8f0253c |
293 | |
0c43e0a1 |
294 | push @field_defs, $field_def; |
f8f0253c |
295 | } |
f8f0253c |
296 | |
297 | # |
da8e499e |
298 | # Index Declarations |
f8f0253c |
299 | # |
0c43e0a1 |
300 | my @index_defs = (); |
da8e499e |
301 | my $idx_name_default; |
0c43e0a1 |
302 | for my $index ( $table->get_indices ) { |
303 | my $name = $index->name || ''; |
c8c17a58 |
304 | if ( $name ) { |
305 | $name = next_unused_name($name, \%used_index_names); |
306 | $used_index_names{$name} = $name; |
307 | } |
308 | |
0c43e0a1 |
309 | my $type = $index->type || NORMAL; |
d8dcdb7a |
310 | my @fields = |
311 | map { $_ =~ s/\(.+\)//; $_ } |
312 | map { unreserve( $_, $table_name ) } |
0c43e0a1 |
313 | $index->fields; |
da8e499e |
314 | next unless @fields; |
315 | |
c8c17a58 |
316 | my $def_start = qq[Constraint "$name" ]; |
0c43e0a1 |
317 | if ( $type eq PRIMARY_KEY ) { |
c8c17a58 |
318 | push @constraint_defs, "${def_start}PRIMARY KEY ". |
50840472 |
319 | '("' . join( '", "', @fields ) . '")'; |
da8e499e |
320 | } |
0c43e0a1 |
321 | elsif ( $type eq UNIQUE ) { |
c8c17a58 |
322 | push @constraint_defs, "${def_start}UNIQUE " . |
50840472 |
323 | '("' . join( '", "', @fields ) . '")'; |
da8e499e |
324 | } |
0c43e0a1 |
325 | elsif ( $type eq NORMAL ) { |
0c43e0a1 |
326 | push @index_defs, |
c8c17a58 |
327 | 'CREATE INDEX "' . $name . "\" on $table_name_ur (". |
328 | join( ', ', map { qq["$_"] } @fields ). |
329 | ');' |
330 | ; |
da8e499e |
331 | } |
f8f0253c |
332 | else { |
0c43e0a1 |
333 | warn "Unknown index type ($type) on table $table_name.\n" |
da8e499e |
334 | if $WARN; |
f8f0253c |
335 | } |
336 | } |
337 | |
0c43e0a1 |
338 | # |
339 | # Table constraints |
340 | # |
341 | my $c_name_default; |
342 | for my $c ( $table->get_constraints ) { |
343 | my $name = $c->name || ''; |
c8c17a58 |
344 | if ( $name ) { |
345 | $name = next_unused_name($name, \%used_index_names); |
346 | $used_index_names{$name} = $name; |
347 | } |
348 | |
0c43e0a1 |
349 | my @fields = |
350 | map { $_ =~ s/\(.+\)//; $_ } |
351 | map { unreserve( $_, $table_name ) } |
352 | $c->fields; |
c8c17a58 |
353 | |
0c43e0a1 |
354 | my @rfields = |
355 | map { $_ =~ s/\(.+\)//; $_ } |
356 | map { unreserve( $_, $table_name ) } |
357 | $c->reference_fields; |
c8c17a58 |
358 | |
8065e024 |
359 | next if !@fields && $c->type ne CHECK_C; |
0c43e0a1 |
360 | |
c8c17a58 |
361 | my $def_start = $name ? qq[Constraint "$name" ] : ''; |
0c43e0a1 |
362 | if ( $c->type eq PRIMARY_KEY ) { |
c8c17a58 |
363 | push @constraint_defs, "${def_start}PRIMARY KEY ". |
50840472 |
364 | '("' . join( '", "', @fields ) . '")'; |
0c43e0a1 |
365 | } |
366 | elsif ( $c->type eq UNIQUE ) { |
50840472 |
367 | $name = next_unused_name($name, \%used_index_names); |
368 | $used_index_names{$name} = $name; |
c8c17a58 |
369 | push @constraint_defs, "${def_start}UNIQUE " . |
50840472 |
370 | '("' . join( '", "', @fields ) . '")'; |
0c43e0a1 |
371 | } |
8065e024 |
372 | elsif ( $c->type eq CHECK_C ) { |
8065e024 |
373 | my $expression = $c->expression; |
c8c17a58 |
374 | push @constraint_defs, "${def_start}CHECK ($expression)"; |
8065e024 |
375 | } |
0c43e0a1 |
376 | elsif ( $c->type eq FOREIGN_KEY ) { |
021dbce8 |
377 | my $def .= "ALTER TABLE $table_name ADD FOREIGN KEY (" . |
378 | join( ', ', map { qq["$_"] } @fields ) . ')' . |
379 | "\n REFERENCES " . $c->reference_table; |
0c43e0a1 |
380 | |
381 | if ( @rfields ) { |
50840472 |
382 | $def .= ' ("' . join( '", "', @rfields ) . '")'; |
0c43e0a1 |
383 | } |
384 | |
385 | if ( $c->match_type ) { |
386 | $def .= ' MATCH ' . |
387 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
388 | } |
389 | |
390 | if ( $c->on_delete ) { |
391 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
392 | } |
393 | |
394 | if ( $c->on_update ) { |
395 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
396 | } |
397 | |
021dbce8 |
398 | push @fks, "$def;"; |
0c43e0a1 |
399 | } |
400 | } |
401 | |
da8e499e |
402 | my $create_statement; |
403 | $create_statement = qq[DROP TABLE "$table_name_ur";\n] |
404 | if $add_drop_table; |
405 | $create_statement .= qq[CREATE TABLE "$table_name_ur" (\n]. |
0c43e0a1 |
406 | join( ",\n", map { " $_" } @field_defs, @constraint_defs ). |
da8e499e |
407 | "\n);" |
408 | ; |
409 | |
410 | $output .= join( "\n\n", |
411 | @comments, |
0c43e0a1 |
412 | @sequence_defs, |
da8e499e |
413 | $create_statement, |
0c43e0a1 |
414 | @index_defs, |
da8e499e |
415 | '' |
416 | ); |
417 | } |
418 | |
600ac2f7 |
419 | if ( @fks ) { |
420 | $output .= "--\n-- Foreign Key Definitions\n--\n\n" unless $no_comments; |
421 | $output .= join( "\n\n", @fks ); |
422 | } |
021dbce8 |
423 | |
da8e499e |
424 | if ( $WARN ) { |
425 | if ( %truncated ) { |
426 | warn "Truncated " . keys( %truncated ) . " names:\n"; |
427 | warn "\t" . join( "\n\t", sort keys %truncated ) . "\n"; |
428 | } |
429 | |
430 | if ( %unreserve ) { |
431 | warn "Encounted " . keys( %unreserve ) . |
432 | " unsafe names in schema (reserved or invalid):\n"; |
433 | warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n"; |
434 | } |
f8f0253c |
435 | } |
436 | |
da8e499e |
437 | return $output; |
f8f0253c |
438 | } |
439 | |
96844cae |
440 | # ------------------------------------------------------------------- |
441 | sub mk_name { |
0c43e0a1 |
442 | my $basename = shift || ''; |
443 | my $type = shift || ''; |
444 | my $scope = shift || ''; |
445 | my $critical = shift || ''; |
96844cae |
446 | my $basename_orig = $basename; |
2ad4c2c8 |
447 | my $max_name = $type |
448 | ? $max_id_length - (length($type) + 1) |
449 | : $max_id_length; |
96844cae |
450 | $basename = substr( $basename, 0, $max_name ) |
451 | if length( $basename ) > $max_name; |
452 | my $name = $type ? "${type}_$basename" : $basename; |
453 | |
454 | if ( $basename ne $basename_orig and $critical ) { |
455 | my $show_type = $type ? "+'$type'" : ""; |
456 | warn "Truncating '$basename_orig'$show_type to $max_id_length ", |
457 | "character limit to make '$name'\n" if $WARN; |
458 | $truncated{ $basename_orig } = $name; |
459 | } |
460 | |
461 | $scope ||= \%global_names; |
462 | if ( my $prev = $scope->{ $name } ) { |
463 | my $name_orig = $name; |
464 | $name .= sprintf( "%02d", ++$prev ); |
465 | substr($name, $max_id_length - 3) = "00" |
466 | if length( $name ) > $max_id_length; |
467 | |
468 | warn "The name '$name_orig' has been changed to ", |
469 | "'$name' to make it unique.\n" if $WARN; |
470 | |
471 | $scope->{ $name_orig }++; |
f8f0253c |
472 | } |
96844cae |
473 | |
474 | $scope->{ $name }++; |
475 | return $name; |
476 | } |
477 | |
478 | # ------------------------------------------------------------------- |
479 | sub unreserve { |
0c43e0a1 |
480 | my $name = shift || ''; |
481 | my $schema_obj_name = shift || ''; |
482 | |
96844cae |
483 | my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : ''; |
484 | |
485 | # also trap fields that don't begin with a letter |
0c43e0a1 |
486 | return $name if !$reserved{ uc $name } && $name =~ /^[a-z]/i; |
96844cae |
487 | |
488 | if ( $schema_obj_name ) { |
489 | ++$unreserve{"$schema_obj_name.$name"}; |
490 | } |
491 | else { |
492 | ++$unreserve{"$name (table name)"}; |
493 | } |
494 | |
495 | my $unreserve = sprintf '%s_', $name; |
496 | return $unreserve.$suffix; |
f8f0253c |
497 | } |
498 | |
50840472 |
499 | # ------------------------------------------------------------------- |
500 | sub next_unused_name { |
501 | my $name = shift || ''; |
502 | my $used_names = shift || ''; |
503 | |
504 | my %used_names = %$used_names; |
505 | |
506 | if ( !defined($used_names{$name}) ) { |
507 | $used_names{$name} = $name; |
508 | return $name; |
509 | } |
510 | |
511 | my $i = 2; |
512 | while ( defined($used_names{$name . $i}) ) { |
513 | ++$i; |
514 | } |
515 | $name .= $i; |
516 | $used_names{$name} = $name; |
517 | return $name; |
518 | } |
519 | |
f8f0253c |
520 | 1; |
f8f0253c |
521 | |
96844cae |
522 | # ------------------------------------------------------------------- |
523 | # Life is full of misery, loneliness, and suffering -- |
524 | # and it's all over much too soon. |
525 | # Woody Allen |
526 | # ------------------------------------------------------------------- |
f8f0253c |
527 | |
96844cae |
528 | =pod |
f8f0253c |
529 | |
20770e44 |
530 | =head1 SEE ALSO |
531 | |
532 | SQL::Translator, SQL::Translator::Producer::Oracle. |
533 | |
f8f0253c |
534 | =head1 AUTHOR |
535 | |
20770e44 |
536 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
f8f0253c |
537 | |
538 | =cut |