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1 | package SQL::Translator::Producer::DB2; |
2 | |
3 | # ------------------------------------------------------------------- |
4 | # $Id: DB2.pm,v 1.1 2005-09-18 20:06:31 schiffbruechige Exp $ |
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::DB2 - DB2 SQL producer |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | use SQL::Translator; |
30 | |
31 | my $t = SQL::Translator->new( parser => '...', producer => 'DB2' ); |
32 | print $translator->translate( $file ); |
33 | |
34 | =head1 DESCRIPTION |
35 | |
36 | Creates an SQL DDL suitable for DB. |
37 | |
38 | =cut |
39 | |
40 | use strict; |
41 | use vars qw[ $VERSION $DEBUG $WARN ]; |
42 | $VERSION = sprintf "%d.%02d", q$Revision: 1.1 $ =~ /(\d+)\.(\d+)/; |
43 | $DEBUG = 0 unless defined $DEBUG; |
44 | |
45 | use SQL::Translator::Schema::Constants; |
46 | use SQL::Translator::Utils qw(header_comment); |
47 | |
48 | |
49 | # http://publib.boulder.ibm.com/infocenter/db2help/topic/com.ibm.db2.udb.doc/ad/r0006844.htm |
50 | |
51 | # This is a terrible WTDI, each Parser should parse down to some standard set |
52 | # of SQL data types, with field->extra entries being used to convert back to |
53 | # weird types like "polygon" if needed (IMO anyway) |
54 | |
55 | my %translate = ( |
56 | # |
57 | # MySQL types |
58 | # |
59 | int => 'integer', |
60 | mediumint => 'integer', |
61 | tinyint => 'smallint', |
62 | char => 'char', |
63 | tinyblob => 'blob', |
64 | mediumblob => 'blob', |
65 | longblob => 'long varchar for bit data', |
66 | tinytext => 'varchar', |
67 | text => 'clob', |
68 | longtext => 'clob', |
69 | mediumtext => 'clob', |
70 | enum => 'varchar', |
71 | set => 'varchar', |
72 | date => 'date', |
73 | datetime => 'timestamp', |
74 | time => 'time', |
75 | year => 'date', |
76 | |
77 | # |
78 | # PostgreSQL types |
79 | # |
80 | 'double precision' => 'double', |
81 | serial => 'integer', |
82 | bigserial => 'integer', |
83 | money => 'double', |
84 | character => 'char', |
85 | 'character varying' => 'varchar', |
86 | bytea => 'BLOB', |
87 | interval => 'integer', |
88 | boolean => 'smallint', |
89 | point => 'integer', |
90 | line => 'integer', |
91 | lseg => 'integer', |
92 | box => 'integer', |
93 | path => 'integer', |
94 | polygon => 'integer', |
95 | circle => 'integer', |
96 | cidr => 'integer', |
97 | inet => 'varchar', |
98 | macaddr => 'varchar', |
99 | bit => 'number', |
100 | 'bit varying' => 'number', |
101 | |
102 | # |
103 | # DB types |
104 | # |
105 | number => 'integer', |
106 | varchar2 => 'varchar', |
107 | long => 'clob', |
108 | ); |
109 | |
110 | my %db2_reserved = map { $_ => 1} qw/ |
111 | ADD DETERMINISTIC LEAVE RESTART |
112 | AFTER DISALLOW LEFT RESTRICT |
113 | ALIAS DISCONNECT LIKE RESULT |
114 | ALL DISTINCT LINKTYPE RESULT_SET_LOCATOR |
115 | ALLOCATE DO LOCAL RETURN |
116 | ALLOW DOUBLE LOCALE RETURNS |
117 | ALTER DROP LOCATOR REVOKE |
118 | AND DSNHATTR LOCATORS RIGHT |
119 | ANY DSSIZE LOCK ROLLBACK |
120 | APPLICATION DYNAMIC LOCKMAX ROUTINE |
121 | AS EACH LOCKSIZE ROW |
122 | ASSOCIATE EDITPROC LONG ROWS |
123 | ASUTIME ELSE LOOP RRN |
124 | AUDIT ELSEIF MAXVALUE RUN |
125 | AUTHORIZATION ENCODING MICROSECOND SAVEPOINT |
126 | AUX END MICROSECONDS SCHEMA |
127 | AUXILIARY END-EXEC MINUTE SCRATCHPAD |
128 | BEFORE END-EXEC1 MINUTES SECOND |
129 | BEGIN ERASE MINVALUE SECONDS |
130 | BETWEEN ESCAPE MODE SECQTY |
131 | BINARY EXCEPT MODIFIES SECURITY |
132 | BUFFERPOOL EXCEPTION MONTH SELECT |
133 | BY EXCLUDING MONTHS SENSITIVE |
134 | CACHE EXECUTE NEW SET |
135 | CALL EXISTS NEW_TABLE SIGNAL |
136 | CALLED EXIT NO SIMPLE |
137 | CAPTURE EXTERNAL NOCACHE SOME |
138 | CARDINALITY FENCED NOCYCLE SOURCE |
139 | CASCADED FETCH NODENAME SPECIFIC |
140 | CASE FIELDPROC NODENUMBER SQL |
141 | CAST FILE NOMAXVALUE SQLID |
142 | CCSID FINAL NOMINVALUE STANDARD |
143 | CHAR FOR NOORDER START |
144 | CHARACTER FOREIGN NOT STATIC |
145 | CHECK FREE NULL STAY |
146 | CLOSE FROM NULLS STOGROUP |
147 | CLUSTER FULL NUMPARTS STORES |
148 | COLLECTION FUNCTION OBID STYLE |
149 | COLLID GENERAL OF SUBPAGES |
150 | COLUMN GENERATED OLD SUBSTRING |
151 | COMMENT GET OLD_TABLE SYNONYM |
152 | COMMIT GLOBAL ON SYSFUN |
153 | CONCAT GO OPEN SYSIBM |
154 | CONDITION GOTO OPTIMIZATION SYSPROC |
155 | CONNECT GRANT OPTIMIZE SYSTEM |
156 | CONNECTION GRAPHIC OPTION TABLE |
157 | CONSTRAINT GROUP OR TABLESPACE |
158 | CONTAINS HANDLER ORDER THEN |
159 | CONTINUE HAVING OUT TO |
160 | COUNT HOLD OUTER TRANSACTION |
161 | COUNT_BIG HOUR OVERRIDING TRIGGER |
162 | CREATE HOURS PACKAGE TRIM |
163 | CROSS IDENTITY PARAMETER TYPE |
164 | CURRENT IF PART UNDO |
165 | CURRENT_DATE IMMEDIATE PARTITION UNION |
166 | CURRENT_LC_CTYPE IN PATH UNIQUE |
167 | CURRENT_PATH INCLUDING PIECESIZE UNTIL |
168 | CURRENT_SERVER INCREMENT PLAN UPDATE |
169 | CURRENT_TIME INDEX POSITION USAGE |
170 | CURRENT_TIMESTAMP INDICATOR PRECISION USER |
171 | CURRENT_TIMEZONE INHERIT PREPARE USING |
172 | CURRENT_USER INNER PRIMARY VALIDPROC |
173 | CURSOR INOUT PRIQTY VALUES |
174 | CYCLE INSENSITIVE PRIVILEGES VARIABLE |
175 | DATA INSERT PROCEDURE VARIANT |
176 | DATABASE INTEGRITY PROGRAM VCAT |
177 | DAY INTO PSID VIEW |
178 | DAYS IS QUERYNO VOLUMES |
179 | DB2GENERAL ISOBID READ WHEN |
180 | DB2GENRL ISOLATION READS WHERE |
181 | DB2SQL ITERATE RECOVERY WHILE |
182 | DBINFO JAR REFERENCES WITH |
183 | DECLARE JAVA REFERENCING WLM |
184 | DEFAULT JOIN RELEASE WRITE |
185 | DEFAULTS KEY RENAME YEAR |
186 | DEFINITION LABEL REPEAT YEARS |
187 | DELETE LANGUAGE RESET |
188 | DESCRIPTOR LC_CTYPE RESIGNAL |
189 | /; |
190 | |
191 | #------------------------------------------------------------------------------ |
192 | |
193 | sub produce |
194 | { |
195 | my ($translator) = @_; |
196 | $DEBUG = $translator->debug; |
197 | $WARN = $translator->show_warnings; |
198 | my $no_comments = $translator->no_comments; |
199 | my $add_drop_table = $translator->add_drop_table; |
200 | my $schema = $translator->schema; |
201 | my $output = ''; |
202 | my $indent = ' '; |
203 | |
204 | $output .= header_comment unless($no_comments); |
205 | my (@table_defs); |
206 | foreach my $table ($schema->get_tables) |
207 | { |
208 | my $table_name = check_name($table->name, 'tables', 18); |
209 | |
210 | my (@field_defs, @comments); |
211 | push @comments, "--\n-- Table: $table_name\n--" unless $no_comments; |
212 | foreach my $field ($table->get_fields) |
213 | { |
214 | my $field_name = check_name($field->name, 'fields', 30); |
215 | my $data_type = uc($translate{lc($field->data_type)} || $field->data_type); |
216 | my $size = $field->size(); |
217 | |
218 | my $field_def = "$field_name $data_type"; |
219 | $field_def .= $field->is_auto_increment ? |
220 | ' GENERATED BY DEFAULT AS IDENTITY' : ''; |
221 | $field_def .= $data_type =~ /CHAR/i ? "(${size})" : ''; |
222 | $field_def .= !$field->is_nullable ? ' NOT NULL':''; |
223 | $field_def .= $field->is_primary_key ? ' PRIMARY KEY':''; |
224 | $field_def .= $field->default_value ? ' DEFAULT ' . $field->default_value : ''; |
225 | |
226 | push @field_defs, "${indent}${field_def}"; |
227 | } |
228 | |
229 | |
230 | my $tablespace = $table->extra()->{'TABLESPACE'} || ''; |
231 | my $table_def = "CREATE TABLE $table_name (\n"; |
232 | $table_def .= join (",\n", @field_defs); |
233 | $table_def .= "\n)"; |
234 | $table_def .= $tablespace ? "IN $tablespace;" : ';'; |
235 | |
236 | push @table_defs, "DROP TABLE $table_name;\n" if $add_drop_table; |
237 | push @table_defs, $table_def; |
238 | } |
239 | |
240 | $output .= join("\n\n", @table_defs); |
241 | } |
242 | |
243 | { my %objnames; |
244 | |
245 | sub check_name |
246 | { |
247 | my ($name, $type, $length) = @_; |
248 | |
249 | my $newname = $name; |
250 | if(length($name) > $length) ## Maximum table name length is 18 |
251 | { |
252 | warn "Table name $name is longer than $length characters, truncated" if $WARN; |
253 | if(grep {$_ eq substr($name, 0, $length) } |
254 | values(%{$objnames{$type}})) |
255 | { |
256 | die "Got multiple matching table names when truncated"; |
257 | } |
258 | $objnames{$type}{$name} = substr($name, 0,$length); |
259 | $newname = $objnames{$type}{$name}; |
260 | } |
261 | |
262 | if($db2_reserved{uc($newname)}) |
263 | { |
264 | warn "$newname is a reserved word in DB2!" if $WARN; |
265 | } |
266 | |
267 | return sprintf("%-*s", $length-5, $newname); |
268 | } |
269 | } |
270 | |
271 | 1; |