1 package SQL::Translator::Parser::PostgreSQL;
3 # -------------------------------------------------------------------
4 # Copyright (C) 2002-2009 SQLFairy Authors
6 # This program is free software; you can redistribute it and/or
7 # modify it under the terms of the GNU General Public License as
8 # published by the Free Software Foundation; version 2.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 # -------------------------------------------------------------------
23 SQL::Translator::Parser::PostgreSQL - parser for PostgreSQL
28 use SQL::Translator::Parser::PostgreSQL;
30 my $translator = SQL::Translator->new;
31 $translator->parser("SQL::Translator::Parser::PostgreSQL");
35 The grammar was started from the MySQL parsers. Here is the description
39 (http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-createtable.html)
41 CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name (
42 { column_name data_type [ DEFAULT default_expr ]
43 [ column_constraint [, ... ] ]
44 | table_constraint } [, ... ]
46 [ INHERITS ( parent_table [, ... ] ) ]
47 [ WITH OIDS | WITHOUT OIDS ]
49 where column_constraint is:
51 [ CONSTRAINT constraint_name ]
52 { NOT NULL | NULL | UNIQUE | PRIMARY KEY |
54 REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ]
55 [ ON DELETE action ] [ ON UPDATE action ] }
56 [ DEFERRABLE | NOT DEFERRABLE ]
57 [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
59 and table_constraint is:
61 [ CONSTRAINT constraint_name ]
62 { UNIQUE ( column_name [, ... ] ) |
63 PRIMARY KEY ( column_name [, ... ] ) |
64 CHECK ( expression ) |
65 FOREIGN KEY ( column_name [, ... ] )
66 REFERENCES reftable [ ( refcolumn [, ... ] ) ]
67 [ MATCH FULL | MATCH PARTIAL ]
68 [ ON DELETE action ] [ ON UPDATE action ] }
69 [ DEFERRABLE | NOT DEFERRABLE ]
70 [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
73 (http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-createindex.html)
75 CREATE [ UNIQUE ] INDEX index_name ON table
76 [ USING acc_method ] ( column [ ops_name ] [, ...] )
78 CREATE [ UNIQUE ] INDEX index_name ON table
79 [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] )
84 ALTER TABLE [ ONLY ] table [ * ]
85 ADD [ COLUMN ] column type [ column_constraint [ ... ] ]
86 ALTER TABLE [ ONLY ] table [ * ]
87 ALTER [ COLUMN ] column { SET DEFAULT value | DROP DEFAULT }
88 ALTER TABLE [ ONLY ] table [ * ]
89 ALTER [ COLUMN ] column SET STATISTICS integer
90 ALTER TABLE [ ONLY ] table [ * ]
91 RENAME [ COLUMN ] column TO newcolumn
95 ADD table_constraint_definition
96 ALTER TABLE [ ONLY ] table
97 DROP CONSTRAINT constraint { RESTRICT | CASCADE }
103 CREATE [ OR REPLACE ] VIEW view [ ( column name list ) ] AS SELECT query
108 use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ];
110 $DEBUG = 0 unless defined $DEBUG;
113 use Parse::RecDescent;
115 use base qw(Exporter);
117 @EXPORT_OK = qw(parse);
119 # Enable warnings within the Parse::RecDescent module.
120 $::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error
121 $::RD_WARN = 1; # Enable warnings. This will warn on unused rules &c.
122 $::RD_HINT = 1; # Give out hints to help fix problems.
124 my $parser; # should we do this? There's no programmic way to
125 # change the grammar, so I think this is safe.
129 { my ( %tables, $table_order, $field_order, @table_comments) }
132 # The "eofile" rule makes the parser fail if any "statement" rule
133 # fails. Otherwise, the first successful match by a "statement"
134 # won't cause the failure needed to know that the parse, as a whole,
137 startrule : statement(s) eofile { \%tables }
160 connect : /^\s*\\\connect.*\n/
162 set : /set/i /[^;]*/ ';'
164 revoke : /revoke/i WORD(s /,/) /on/i TABLE(?) table_name /from/i name_with_opt_quotes(s /,/) ';'
166 my $table_info = $item{'table_name'};
167 my $schema_name = $table_info->{'schema_name'};
168 my $table_name = $table_info->{'table_name'};
169 push @{ $tables{ $table_name }{'permissions'} }, {
176 revoke : /revoke/i WORD(s /,/) /on/i SCHEMA(?) schema_name /from/i name_with_opt_quotes(s /,/) ';'
179 grant : /grant/i WORD(s /,/) /on/i TABLE(?) table_name /to/i name_with_opt_quotes(s /,/) ';'
181 my $table_info = $item{'table_name'};
182 my $schema_name = $table_info->{'schema_name'};
183 my $table_name = $table_info->{'table_name'};
184 push @{ $tables{ $table_name }{'permissions'} }, {
191 grant : /grant/i WORD(s /,/) /on/i SCHEMA(?) schema_name /to/i name_with_opt_quotes(s /,/) ';'
194 drop : /drop/i /[^;]*/ ';'
197 /'(\\.|''|[^\\\'])*'/
199 nonstring : /[^;\'"]+/
201 statement_body : string | nonstring
203 insert : /insert/i statement_body(s?) ';'
205 update : /update/i statement_body(s?) ';'
210 create : CREATE temporary_table(?) TABLE table_name '(' create_definition(s? /,/) ')' table_option(s?) ';'
212 my $table_info = $item{'table_name'};
213 my $schema_name = $table_info->{'schema_name'};
214 my $table_name = $table_info->{'table_name'};
215 $tables{ $table_name }{'order'} = ++$table_order;
216 $tables{ $table_name }{'schema_name'} = $schema_name;
217 $tables{ $table_name }{'table_name'} = $table_name;
219 $tables{ $table_name }{'temporary'} = $item[2][0];
221 if ( @table_comments ) {
222 $tables{ $table_name }{'comments'} = [ @table_comments ];
223 @table_comments = ();
227 for my $definition ( @{ $item[6] } ) {
228 if ( $definition->{'supertype'} eq 'field' ) {
229 my $field_name = $definition->{'name'};
230 $tables{ $table_name }{'fields'}{ $field_name } =
231 { %$definition, order => $field_order++ };
233 for my $constraint ( @{ $definition->{'constraints'} || [] } ) {
234 $constraint->{'fields'} = [ $field_name ];
235 push @{ $tables{ $table_name }{'constraints'} },
239 elsif ( $definition->{'supertype'} eq 'constraint' ) {
240 push @{ $tables{ $table_name }{'constraints'} }, $definition;
242 elsif ( $definition->{'supertype'} eq 'index' ) {
243 push @{ $tables{ $table_name }{'indices'} }, $definition;
247 for my $option ( @{ $item[8] } ) {
248 $tables{ $table_name }{'table_options(s?)'}{ $option->{'type'} } =
255 create : CREATE unique(?) /(index|key)/i index_name /on/i table_name using_method(?) '(' field_name(s /,/) ')' where_predicate(?) ';'
257 my $table_info = $item{'table_name'};
258 my $schema_name = $table_info->{'schema_name'};
259 my $table_name = $table_info->{'table_name'};
260 push @{ $tables{ $table_name }{'indices'} },
262 name => $item{'index_name'},
263 supertype => $item{'unique'}[0] ? 'constraint' : 'index',
264 type => $item{'unique'}[0] ? 'unique' : 'normal',
266 method => $item{'using_method'}[0],
272 # Create anything else (e.g., domain, etc.)
274 create : CREATE WORD /[^;]+/ ';'
275 { @table_comments = (); }
277 using_method : /using/i WORD { $item[2] }
279 where_predicate : /where/i /[^;]+/
281 create_definition : field
285 comment : /^\s*(?:#|-{2})(.*)\n/
287 my $comment = $item[1];
288 $comment =~ s/^\s*(#|-*)\s*//;
289 $comment =~ s/\s*$//;
291 push @table_comments, $comment;
294 comment_on_table : /comment/i /on/i /table/i table_name /is/i comment_phrase ';'
296 my $table_info = $item{'table_name'};
297 my $schema_name = $table_info->{'schema_name'};
298 my $table_name = $table_info->{'table_name'};
299 push @{ $tables{ $table_name }{'comments'} }, $item{'comment_phrase'};
302 comment_on_column : /comment/i /on/i /column/i column_name /is/i comment_phrase ';'
304 my $table_name = $item[4]->{'table'};
305 my $field_name = $item[4]->{'field'};
306 if ($tables{ $table_name }{'fields'}{ $field_name } ) {
307 push @{ $tables{ $table_name }{'fields'}{ $field_name }{'comments'} },
308 $item{'comment_phrase'};
311 die "No such column as $table_name.$field_name";
315 comment_on_other : /comment/i /on/i /\w+/ /\w+/ /is/i comment_phrase ';'
317 push(@table_comments, $item{'comment_phrase'});
320 # [added by cjm 20041019]
321 # [TODO: other comment-on types]
322 # for now we just have a general mechanism for handling other
323 # kinds of comments than table/column; I'm not sure of the best
324 # way to incorporate these into the datamodel
326 # this is the exhaustive list of types of comment:
327 #COMMENT ON DATABASE my_database IS 'Development Database';
328 #COMMENT ON INDEX my_index IS 'Enforces uniqueness on employee id';
329 #COMMENT ON RULE my_rule IS 'Logs UPDATES of employee records';
330 #COMMENT ON SEQUENCE my_sequence IS 'Used to generate primary keys';
331 #COMMENT ON TABLE my_table IS 'Employee Information';
332 #COMMENT ON TYPE my_type IS 'Complex Number support';
333 #COMMENT ON VIEW my_view IS 'View of departmental costs';
334 #COMMENT ON COLUMN my_table.my_field IS 'Employee ID number';
335 #COMMENT ON TRIGGER my_trigger ON my_table IS 'Used for R.I.';
337 # this is tested by test 08
339 column_name : NAME '.' NAME
340 { $return = { table => $item[1], field => $item[3] } }
342 comment_phrase : /null/i
345 comment_phrase : /'/ comment_phrase_unquoted(s) /'/
346 { my $phrase = join(' ', @{ $item[2] });
349 # [cjm TODO: double-single quotes in a comment_phrase]
350 comment_phrase_unquoted : /[^\']*/
351 { $return = $item[1] }
354 xxxcomment_phrase : /'.*?'|NULL/
356 my $val = $item[1] || '';
361 field : field_comment(s?) field_name data_type field_meta(s?) field_comment(s?)
363 my ( $default, @constraints, $is_pk );
365 for my $meta ( @{ $item[4] } ) {
366 if ( $meta->{'type'} eq 'default' ) {
370 elsif ( $meta->{'type'} eq 'not_null' ) {
373 elsif ( $meta->{'type'} eq 'primary_key' ) {
377 push @constraints, $meta if $meta->{'supertype'} eq 'constraint';
380 my @comments = ( @{ $item[1] }, @{ $item[5] } );
383 supertype => 'field',
384 name => $item{'field_name'},
385 data_type => $item{'data_type'}{'type'},
386 size => $item{'data_type'}{'size'},
387 is_nullable => $is_nullable,
388 default => $default->{'value'},
389 constraints => [ @constraints ],
390 comments => [ @comments ],
391 is_primary_key => $is_pk || 0,
392 is_auto_increment => $item{'data_type'}{'is_auto_increment'},
397 field_comment : /^\s*(?:#|-{2})(.*)\n/
399 my $comment = $item[1];
400 $comment =~ s/^\s*(#|-*)\s*//;
401 $comment =~ s/\s*$//;
405 field_meta : default_val
408 column_constraint : constraint_name(?) column_constraint_type deferrable(?) deferred(?)
410 my $desc = $item{'column_constraint_type'};
411 my $type = $desc->{'type'};
412 my $fields = $desc->{'fields'} || [];
413 my $expression = $desc->{'expression'} || '';
416 supertype => 'constraint',
417 name => $item{'constraint_name'}[0] || '',
419 expression => $type eq 'check' ? $expression : '',
420 deferrable => $item{'deferrable'},
421 deferred => $item{'deferred'},
422 reference_table => $desc->{'reference_table'},
423 reference_fields => $desc->{'reference_fields'},
424 match_type => $desc->{'match_type'},
425 on_delete => $desc->{'on_delete'} || $desc->{'on_delete_do'},
426 on_update => $desc->{'on_update'} || $desc->{'on_update_do'},
430 constraint_name : /constraint/i name_with_opt_quotes { $item[2] }
432 column_constraint_type : /not null/i { $return = { type => 'not_null' } }
435 { $return = { type => 'null' } }
438 { $return = { type => 'unique' } }
441 { $return = { type => 'primary_key' } }
443 /check/i '(' /[^)]+/ ')'
444 { $return = { type => 'check', expression => $item[3] } }
446 /references/i table_name parens_word_list(?) match_type(?) key_action(s?)
448 my $table_info = $item{'table_name'};
449 my $schema_name = $table_info->{'schema_name'};
450 my $table_name = $table_info->{'table_name'};
451 my ( $on_delete, $on_update );
452 for my $action ( @{ $item[5] || [] } ) {
453 $on_delete = $action->{'action'} if $action->{'type'} eq 'delete';
454 $on_update = $action->{'action'} if $action->{'type'} eq 'update';
458 type => 'foreign_key',
459 reference_table => $table_name,
460 reference_fields => $item[3][0],
461 match_type => $item[4][0],
462 on_delete => $on_delete,
463 on_update => $on_update,
467 table_name : schema_qualification(?) name_with_opt_quotes {
468 $return = { schema_name => $item[1], table_name => $item[2] }
471 schema_qualification : name_with_opt_quotes '.'
473 schema_name : name_with_opt_quotes
475 field_name : name_with_opt_quotes
477 name_with_opt_quotes : double_quote(?) NAME double_quote(?) { $item[2] }
481 index_name : name_with_opt_quotes
483 data_type : pg_data_type parens_value_list(?)
485 my $data_type = $item[1];
488 # We can deduce some sizes from the data type's name.
490 if ( my $size = $item[2][0] ) {
491 $data_type->{'size'} = $size;
494 $return = $data_type;
516 $return = { type => 'interval' };
519 /(integer|int4?)/i # interval must come before this
535 /(double precision|float8?)/i
543 /(bigserial|serial8)/i
548 is_auto_increment => 1,
557 is_auto_increment => 1,
561 /(bit varying|varbit)/i
563 $return = { type => 'varbit' };
568 $return = { type => 'varchar' };
573 $return = { type => 'char' };
578 $return = { type => 'boolean' };
583 $return = { type => 'bytea' };
586 /(timestamptz|timestamp)(?:\(\d\))?( with(out)? time zone)?/i
588 $return = { type => 'timestamp' };
599 /(bit|box|cidr|circle|date|inet|line|lseg|macaddr|money|numeric|decimal|path|point|polygon|timetz|time|varchar)/i
601 $return = { type => $item[1] };
604 parens_value_list : '(' VALUE(s /,/) ')'
608 parens_word_list : '(' name_with_opt_quotes(s /,/) ')'
611 field_size : '(' num_range ')' { $item{'num_range'} }
613 num_range : DIGITS ',' DIGITS
614 { $return = $item[1].','.$item[3] }
616 { $return = $item[1] }
618 table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?)
620 my $desc = $item{'table_constraint_type'};
621 my $type = $desc->{'type'};
622 my $fields = $desc->{'fields'};
623 my $expression = $desc->{'expression'};
624 my @comments = ( @{ $item[1] }, @{ $item[-1] } );
627 name => $item[2][0] || '',
628 supertype => 'constraint',
630 fields => $type ne 'check' ? $fields : [],
631 expression => $type eq 'check' ? $expression : '',
632 deferrable => $item{'deferrable'},
633 deferred => $item{'deferred'},
634 reference_table => $desc->{'reference_table'},
635 reference_fields => $desc->{'reference_fields'},
636 match_type => $desc->{'match_type'}[0],
637 on_delete => $desc->{'on_delete'} || $desc->{'on_delete_do'},
638 on_update => $desc->{'on_update'} || $desc->{'on_update_do'},
639 comments => [ @comments ],
643 table_constraint_type : /primary key/i '(' name_with_opt_quotes(s /,/) ')'
646 type => 'primary_key',
651 /unique/i '(' name_with_opt_quotes(s /,/) ')'
659 /check/i '(' /[^)]+/ ')'
663 expression => $item[3],
667 /foreign key/i '(' name_with_opt_quotes(s /,/) ')' /references/i table_name parens_word_list(?) match_type(?) key_action(s?)
669 my ( $on_delete, $on_update );
670 for my $action ( @{ $item[9] || [] } ) {
671 $on_delete = $action->{'action'} if $action->{'type'} eq 'delete';
672 $on_update = $action->{'action'} if $action->{'type'} eq 'update';
676 supertype => 'constraint',
677 type => 'foreign_key',
679 reference_table => $item[6]->{'table_name'},
680 reference_fields => $item[7][0],
681 match_type => $item[8][0],
682 on_delete => $on_delete || '',
683 on_update => $on_update || '',
687 deferrable : not(?) /deferrable/i
689 $return = ( $item[1] =~ /not/i ) ? 0 : 1;
692 deferred : /initially/i /(deferred|immediate)/i { $item[2] }
694 match_type : /match full/i { 'match_full' }
696 /match partial/i { 'match_partial' }
698 key_action : key_delete
702 key_delete : /on delete/i key_mutation
710 key_update : /on update/i key_mutation
718 key_mutation : /no action/i { $return = 'no_action' }
720 /restrict/i { $return = 'restrict' }
722 /cascade/i { $return = 'cascade' }
724 /set null/i { $return = 'set null' }
726 /set default/i { $return = 'set default' }
728 alter : alter_table table_name add_column field ';'
730 my $field_def = $item[4];
731 $tables{ $item[2]->{'table_name'} }{'fields'}{ $field_def->{'name'} } = {
732 %$field_def, order => $field_order++
737 alter : alter_table table_name ADD table_constraint ';'
739 my $table_name = $item[2]->{'table_name'};
740 my $constraint = $item[4];
741 push @{ $tables{ $table_name }{'constraints'} }, $constraint;
745 alter : alter_table table_name drop_column NAME restrict_or_cascade(?) ';'
747 $tables{ $item[2]->{'table_name'} }{'fields'}{ $item[4] }{'drop'} = 1;
751 alter : alter_table table_name alter_column NAME alter_default_val ';'
753 $tables{ $item[2]->{'table_name'} }{'fields'}{ $item[4] }{'default'} =
759 # These will just parse for now but won't affect the structure. - ky
761 alter : alter_table table_name /rename/i /to/i NAME ';'
764 alter : alter_table table_name alter_column NAME SET /statistics/i INTEGER ';'
767 alter : alter_table table_name alter_column NAME SET /storage/i storage_type ';'
770 alter : alter_table table_name rename_column NAME /to/i NAME ';'
773 alter : alter_table table_name DROP /constraint/i NAME restrict_or_cascade ';'
776 alter : alter_table table_name /owner/i /to/i NAME ';'
779 alter : alter_sequence NAME /owned/i /by/i column_name ';'
782 storage_type : /(plain|external|extended|main)/i
784 temporary: /temp(orary)?\\b/i
786 temporary_table: temporary
791 alter_default_val : SET default_val
793 $return = { value => $item[2]->{'value'} }
797 $return = { value => undef }
801 # This is a little tricky to get right, at least WRT to making the
802 # tests pass. The problem is that the constraints are stored just as
803 # a list (no name access), and the tests expect the constraints in a
804 # particular order. I'm going to leave the rule but disable the code
807 alter : alter_table table_name alter_column NAME alter_nullable ';'
809 # my $table_name = $item[2]->{'table_name'};
810 # my $field_name = $item[4];
811 # my $is_nullable = $item[5]->{'is_nullable'};
813 # $tables{ $table_name }{'fields'}{ $field_name }{'is_nullable'} =
816 # if ( $is_nullable ) {
818 # push @{ $tables{ $table_name }{'constraints'} }, {
819 # type => 'not_null',
820 # fields => [ $field_name ],
825 # 0 .. $#{ $tables{ $table_name }{'constraints'} || [] }
827 # my $c = $tables{ $table_name }{'constraints'}[ $i ] or next;
828 # my $fields = join( '', @{ $c->{'fields'} || [] } ) or next;
829 # if ( $c->{'type'} eq 'not_null' && $fields eq $field_name ) {
830 # delete $tables{ $table_name }{'constraints'}[ $i ];
839 alter_nullable : SET not_null
841 $return = { is_nullable => 0 }
845 $return = { is_nullable => 1 }
848 not_null : /not/i /null/i
852 add_column : ADD COLUMN(?)
854 alter_table : ALTER TABLE ONLY(?)
856 alter_sequence : ALTER SEQUENCE
858 drop_column : DROP COLUMN(?)
860 alter_column : ALTER COLUMN(?)
862 rename_column : /rename/i COLUMN(?)
864 restrict_or_cascade : /restrict/i |
867 # Handle functions that can be called
868 select : SELECT select_function ';'
871 # Read the setval function but don't do anything with it because this parser
872 # isn't handling sequences
873 select_function : schema_qualification(?) /setval/i '(' VALUE /,/ VALUE /,/ /(true|false)/i ')'
876 # Skipping all COPY commands
877 copy : COPY WORD /[^;]+/ ';' { 1 }
880 # The "\." allows reading in from STDIN but this isn't needed for schema
881 # creation, so it is skipped.
886 # End basically useless stuff. - ky
889 create_table : CREATE TABLE
891 create_index : CREATE /index/i
893 default_val : DEFAULT /(\d+|'[^']*'|\w+\(.*\))|\w+/
895 my $val = defined $item[2] ? $item[2] : '';
898 supertype => 'constraint',
906 supertype => 'constraint',
912 name_with_opt_paren : NAME parens_value_list(s?)
913 { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] }
915 unique : /unique/i { 1 }
917 key : /key/i | /index/i
919 table_option : /inherits/i '(' name_with_opt_quotes(s /,/) ')'
921 $return = { type => 'inherits', table_name => $item[3] }
926 $return = { type => $item[1] =~ /out/i ? 'without_oids' : 'with_oids' }
947 SEMICOLON : /\s*;\n?/
949 SEQUENCE : /sequence/i
972 VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/
974 | /'.*?'/ # XXX doesn't handle embedded quotes
981 # -------------------------------------------------------------------
983 my ( $translator, $data ) = @_;
984 $parser ||= Parse::RecDescent->new($GRAMMAR);
986 $::RD_TRACE = $translator->trace ? 1 : undef;
987 $DEBUG = $translator->debug;
989 unless (defined $parser) {
990 return $translator->error("Error instantiating Parse::RecDescent ".
991 "instance: Bad grammer");
994 my $result = $parser->startrule($data);
995 die "Parse failed.\n" unless defined $result;
996 warn Dumper($result) if $DEBUG;
998 my $schema = $translator->schema;
1000 ( $result->{ $a }{'order'} || 0 ) <=> ( $result->{ $b }{'order'} || 0 )
1001 } keys %{ $result };
1003 for my $table_name ( @tables ) {
1004 my $tdata = $result->{ $table_name };
1005 my $table = $schema->add_table(
1006 #schema => $tdata->{'schema_name'},
1007 name => $tdata->{'table_name'},
1008 ) or die "Couldn't create table '$table_name': " . $schema->error;
1010 $table->extra(temporary => 1) if $tdata->{'temporary'};
1012 $table->comments( $tdata->{'comments'} );
1015 $tdata->{'fields'}{ $a }{'order'}
1017 $tdata->{'fields'}{ $b }{'order'}
1018 } keys %{ $tdata->{'fields'} };
1020 for my $fname ( @fields ) {
1021 my $fdata = $tdata->{'fields'}{ $fname };
1022 next if $fdata->{'drop'};
1023 my $field = $table->add_field(
1024 name => $fdata->{'name'},
1025 data_type => $fdata->{'data_type'},
1026 size => $fdata->{'size'},
1027 default_value => $fdata->{'default'},
1028 is_auto_increment => $fdata->{'is_auto_increment'},
1029 is_nullable => $fdata->{'is_nullable'},
1030 comments => $fdata->{'comments'},
1031 ) or die $table->error;
1033 $table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
1035 for my $cdata ( @{ $fdata->{'constraints'} } ) {
1036 next unless $cdata->{'type'} eq 'foreign_key';
1037 $cdata->{'fields'} ||= [ $field->name ];
1038 push @{ $tdata->{'constraints'} }, $cdata;
1042 for my $idata ( @{ $tdata->{'indices'} || [] } ) {
1043 my $index = $table->add_index(
1044 name => $idata->{'name'},
1045 type => uc $idata->{'type'},
1046 fields => $idata->{'fields'},
1047 ) or die $table->error . ' ' . $table->name;
1050 for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
1051 my $constraint = $table->add_constraint(
1052 name => $cdata->{'name'},
1053 type => $cdata->{'type'},
1054 fields => $cdata->{'fields'},
1055 reference_table => $cdata->{'reference_table'},
1056 reference_fields => $cdata->{'reference_fields'},
1057 match_type => $cdata->{'match_type'} || '',
1058 on_delete => $cdata->{'on_delete'} || $cdata->{'on_delete_do'},
1059 on_update => $cdata->{'on_update'} || $cdata->{'on_update_do'},
1060 expression => $cdata->{'expression'},
1061 ) or die "Can't add constraint of type '" .
1062 $cdata->{'type'} . "' to table '" . $table->name .
1063 "': " . $table->error;
1072 # -------------------------------------------------------------------
1073 # Rescue the drowning and tie your shoestrings.
1074 # Henry David Thoreau
1075 # -------------------------------------------------------------------
1081 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>,
1082 Allen Day E<lt>allenday@ucla.eduE<gt>.
1086 perl(1), Parse::RecDescent.