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354b1807 |
1 | #!/usr/bin/perl |
2 | |
3 | # ------------------------------------------------------------------- |
4 | # $Id: sqlt-dumper,v 1.1 2003-08-26 03:56:43 kycl4rk Exp $ |
5 | # ------------------------------------------------------------------- |
6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org> |
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 | sqlt-dumper - create a dumper script from a schema |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | sqlt-dumper -d Oracle [options] schema.sql > dumper.pl |
30 | |
31 | ./dumper.pl > data.sql |
32 | |
33 | Options: |
34 | |
35 | -h|--help Show help and exit |
36 | --add-truncate Add "TRUNCATE TABLE" statements for each table |
37 | --skip=t1[,t2] Skip tables in comma-separated list |
38 | -u|--user Database username |
39 | -p|--password Database password |
40 | --dsn DSN for DBI |
41 | |
42 | =head1 DESCRIPTION |
43 | |
44 | This script uses SQL::Translator to parse the SQL schema and create a |
45 | Perl script that can connect to the database and dump the data as |
46 | INSERT statements a la mysqldump. If you enable "add-truncate" or |
47 | specify tables to "skip," then the generated dumper script will have |
48 | those hardcoded. However, these will also be options in the generated |
49 | dumper, so you can wait to specify these options when you dump your |
50 | database. The database username, password, and DSN can be hardcoded |
51 | into the generated script, or part of the DSN can be intuited from the |
52 | "database" argument. |
53 | |
54 | =cut |
55 | |
56 | # ------------------------------------------------------------------- |
57 | |
58 | use strict; |
59 | use Pod::Usage; |
60 | use Getopt::Long; |
61 | use SQL::Translator; |
62 | |
63 | use vars '$VERSION'; |
64 | $VERSION = sprintf "%d.%02d", q$Revision: 1.1 $ =~ /(\d+)\.(\d+)/; |
65 | |
66 | my ( $help, $db, $add_truncate, $skip, $db_user, $db_pass, $dsn ); |
67 | GetOptions( |
68 | 'h|help' => \$help, |
69 | 'd|f|from|db=s' => \$db, |
70 | 'add-truncate' => \$add_truncate, |
71 | 'skip:s' => \$skip, |
72 | 'u|user:s' => \$db_user, |
73 | 'p|password:s' => \$db_pass, |
74 | 'dsn:s' => \$dsn, |
75 | ) or pod2usage; |
76 | |
77 | pod2usage(0) if $help; |
78 | pod2usage( 'No database driver specified' ) unless $db; |
79 | $db_user ||= 'username'; |
80 | $db_pass ||= 'password'; |
81 | $dsn ||= "dbi:$db:_"; |
82 | |
83 | my $file = shift @ARGV or pod2usage( -msg => 'No input file' ); |
84 | |
85 | my $t = SQL::Translator->new; |
86 | $t->parser( $db ) or die $t->error, "\n"; |
87 | $t->filename( $file ) or die $t->error, "\n"; |
88 | |
89 | my %skip = map { $_, 1 } map { s/^\s+|\s+$//; $_ } split (/,/, $skip); |
90 | my $parser = $t->parser or die $t->error; |
91 | $parser->($t, $t->data); |
92 | my $schema = $t->schema; |
93 | my $now = localtime; |
94 | |
95 | my $out = <<"EOF"; |
96 | #!/usr/bin/perl |
97 | |
98 | # |
99 | # Generated $now |
100 | # By sqlt-dumper.pl, part of the SQLFairy project |
101 | # For more info, see http://sqlfairy.sourceforge.net/ |
102 | # |
103 | |
104 | use strict; |
105 | use DBI; |
106 | use Getopt::Long; |
107 | |
108 | my ( \$help, \$add_truncate, \$skip ); |
109 | GetOptions( |
110 | 'h|help' => \\\$help, |
111 | 'add-truncate' => \\\$add_truncate, |
112 | 'skip:s' => \\\$skip, |
113 | ); |
114 | |
115 | if ( \$help ) { |
116 | print <<"USAGE"; |
117 | Usage: |
118 | \$0 [options] |
119 | |
120 | Options: |
121 | -h|--help Show help and exit |
122 | --add-truncate Add "TRUNCATE TABLE" statements |
123 | --skip=t1[,t2] Comma-separated list of tables to skip |
124 | |
125 | USAGE |
126 | exit(0); |
127 | } |
128 | |
129 | my \%skip = map { \$_, 1 } map { s/^\\s+|\\s+\$//; \$_ } split (/,/, \$skip); |
130 | my \$db = DBI->connect('$dsn', '$db_user', '$db_pass'); |
131 | |
132 | EOF |
133 | |
134 | for my $table ( $schema->get_tables ) { |
135 | my $table_name = $table->name; |
136 | next if $skip{ $table_name }; |
137 | my ( @field_names, %types ); |
138 | for my $field ( $table->get_fields ) { |
139 | $types{ $field->name } = $field->data_type =~ m/(char|str|long|text)/ |
140 | ? 'string' : 'number'; |
141 | push @field_names, $field->name; |
142 | } |
143 | |
144 | $out .= join('', |
145 | "#\n# Table: $table_name\n#\n{\n", |
146 | " next if \$skip{'$table_name'};\n", |
147 | " print \"--\\n-- Data for table '$table_name'\\n--\\n\";\n\n", |
148 | " if ( \$add_truncate ) {\n", |
149 | " print \"TRUNCATE TABLE $table_name;\\n\";\n", |
150 | " }\n\n", |
151 | ); |
152 | |
153 | my $insert = "INSERT INTO $table_name (". join(', ', @field_names). |
154 | ') VALUES ('; |
155 | |
156 | if ( $add_truncate ) { |
157 | $out .= " print \"TRUNCATE TABLE $table_name;\\n\";\n"; |
158 | } |
159 | |
160 | $out .= join('', |
161 | " my \%types = (\n", |
162 | join("\n", map { " $_ => '$types{ $_ }'," } @field_names), |
163 | "\n );\n\n", |
164 | " my \$data = \$db->selectall_arrayref(\n", |
165 | " 'select ", join(', ', @field_names), " from $table_name',\n", |
166 | " { Columns => {} },\n", |
167 | " );\n\n", |
168 | " for my \$rec ( \@{ \$data } ) {\n", |
169 | " my \@vals;\n", |
170 | " for my \$fld ( qw[", join(' ', @field_names), "] ) {\n", |
171 | " my \$val = \$rec->{ \$fld };\n", |
172 | " if ( \$types{ \$fld } eq 'string' ) {\n", |
173 | " \$val =~ s/'/\\'/g;\n", |
174 | " \$val = defined \$val ? qq['\$val'] : qq[''];\n", |
175 | " }\n", |
176 | " else {\n", |
177 | " \$val = defined \$val ? \$val : 'NULL';\n", |
178 | " }\n", |
179 | " push \@vals, \$val;\n", |
180 | " }\n", |
181 | " print \"$insert\", join(', ', \@vals), \");\\n\";\n", |
182 | " }\n", |
183 | " print \"\\n\";\n", |
184 | "}\n\n", |
185 | ); |
186 | } |
187 | |
188 | print $out; |
189 | exit(0); |
190 | |
191 | # ------------------------------------------------------------------- |
192 | |
193 | =pod |
194 | |
195 | =head1 AUTHOR |
196 | |
197 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
198 | |
199 | =head1 SEE ALSO |
200 | |
201 | perl, SQL::Translator. |
202 | |
203 | =cut |