summaryrefslogtreecommitdiff
path: root/Master/tlpkg/tlperl/lib/CPANPLUS/Internals/Source/SQLite.pm
blob: 556be6456d5074e840258f2240265196b1f273e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
package CPANPLUS::Internals::Source::SQLite;

use strict;
use warnings;

use base 'CPANPLUS::Internals::Source';

use CPANPLUS::Error;
use CPANPLUS::Internals::Constants;
use CPANPLUS::Internals::Source::SQLite::Tie;

use Data::Dumper;
use DBIx::Simple;
use DBD::SQLite;

use Params::Check               qw[allow check];
use Locale::Maketext::Simple    Class => 'CPANPLUS', Style => 'gettext';

use constant TXN_COMMIT => 1000;

=head1 NAME 

CPANPLUS::Internals::Source::SQLite - SQLite implementation

=cut

{   my $Dbh;
    my $DbFile;

    sub __sqlite_file { 
        return $DbFile if $DbFile;

        my $self = shift;
        my $conf = $self->configure_object;

        $DbFile = File::Spec->catdir( 
                        $conf->get_conf('base'),
                        SOURCE_SQLITE_DB
            );
    
        return $DbFile;
    };

    sub __sqlite_dbh { 
        return $Dbh if $Dbh;
        
        my $self = shift;
        $Dbh     = DBIx::Simple->connect(
                        "dbi:SQLite:dbname=" . $self->__sqlite_file,
                        '', '',
                        { AutoCommit => 1 }
                    );
        #$Dbh->dbh->trace(1);
        $Dbh->query(qq{PRAGMA synchronous = OFF});

        return $Dbh;        
    };

    sub __sqlite_disconnect {
      return unless $Dbh;
      $Dbh->disconnect;
      $Dbh = undef;
      return;
    }
}

{   my $used_old_copy = 0;

    sub _init_trees {
        my $self = shift;
        my $conf = $self->configure_object;
        my %hash = @_;
    
        my($path,$uptodate,$verbose,$use_stored);
        my $tmpl = {
            path        => { default => $conf->get_conf('base'), store => \$path },
            verbose     => { default => $conf->get_conf('verbose'), store => \$verbose },
            uptodate    => { required => 1, store => \$uptodate },
            use_stored  => { default  => 1, store => \$use_stored },
        };
    
        check( $tmpl, \%hash ) or return;

        ### if it's not uptodate, or the file doesn't exist, we need to create
        ### a new sqlite db
        if( not $uptodate or not -e $self->__sqlite_file ) {        
            $used_old_copy = 0;

            ### chuck the file
            $self->__sqlite_disconnect;
            1 while unlink $self->__sqlite_file;
        
            ### and create a new one
            $self->__sqlite_create_db or do {
                error(loc("Could not create new SQLite DB"));
                return;    
            }            
        } else {
            $used_old_copy = 1;
        }            
    
        ### set up the author tree
        {   my %at;
            tie %at, 'CPANPLUS::Internals::Source::SQLite::Tie',
                dbh => $self->__sqlite_dbh, table => 'author', 
                key => 'cpanid',            cb => $self;
                
            $self->_atree( \%at  );
        }

        ### set up the author tree
        {   my %mt;
            tie %mt, 'CPANPLUS::Internals::Source::SQLite::Tie',
                dbh => $self->__sqlite_dbh, table => 'module', 
                key => 'module',            cb => $self;

            $self->_mtree( \%mt  );
        }
        
        ### start a transaction
        $self->__sqlite_dbh->query('BEGIN');
        
        return 1;        
        
    }
    
    sub _standard_trees_completed   { return $used_old_copy }
    sub _custom_trees_completed     { return }
    ### finish transaction
    sub _finalize_trees             { $_[0]->__sqlite_dbh->commit; return 1 }

    ### saves current memory state, but not implemented in sqlite
    sub _save_state                 { 
        error(loc("%1 has not implemented writing state to disk", __PACKAGE__)); 
        return;
    }
}

{   my $txn_count = 0;

    ### XXX move this outside the sub, so we only compute it once
    my $class;
    my @keys    = qw[ author cpanid email ];
    my $tmpl    = {
        class   => { default => 'CPANPLUS::Module::Author', store => \$class },
        map { $_ => { required => 1 } } @keys
     };
    
    ### dbix::simple's expansion of (??) is REALLY expensive, so do it manually
    my $ph      = join ',', map { '?' } @keys;


    sub _add_author_object {
        my $self = shift;
        my %hash = @_;
        my $dbh  = $self->__sqlite_dbh;
    
        my $href = do {
            local $Params::Check::NO_DUPLICATES         = 1;            
            local $Params::Check::SANITY_CHECK_TEMPLATE = 0;
            check( $tmpl, \%hash ) or return;
        };

        ### keep counting how many we inserted
        unless( ++$txn_count % TXN_COMMIT ) {
            #warn "Committing transaction $txn_count";
            $dbh->commit or error( $dbh->error ); # commit previous transaction
            $dbh->begin_work  or error( $dbh->error ); # and start a new one
        }
        
        $dbh->query( 
            "INSERT INTO author (". join(',',keys(%$href)) .") VALUES ($ph)",
            values %$href
        ) or do {
            error( $dbh->error );
            return;
        };
        
        return 1;
     }
}

{   my $txn_count = 0;

    ### XXX move this outside the sub, so we only compute it once
    my $class;    
    my @keys = qw[ module version path comment author package description dslip mtime ];
    my $tmpl = {
        class   => { default => 'CPANPLUS::Module', store => \$class },
        map { $_ => { required => 1 } } @keys
    };
    
    ### dbix::simple's expansion of (??) is REALLY expensive, so do it manually
    my $ph      = join ',', map { '?' } @keys;

    sub _add_module_object {
        my $self = shift;
        my %hash = @_;
        my $dbh  = $self->__sqlite_dbh;
    
        my $href = do {
            local $Params::Check::NO_DUPLICATES         = 1;
            local $Params::Check::SANITY_CHECK_TEMPLATE = 0;
            check( $tmpl, \%hash ) or return;
        };
        
        ### fix up author to be 'plain' string
        $href->{'author'} = $href->{'author'}->cpanid;

        ### keep counting how many we inserted
        unless( ++$txn_count % TXN_COMMIT ) {
            #warn "Committing transaction $txn_count";
            $dbh->commit or error( $dbh->error ); # commit previous transaction
            $dbh->begin_work  or error( $dbh->error ); # and start a new one
        }
        
        $dbh->query( 
            "INSERT INTO module (". join(',',keys(%$href)) .") VALUES ($ph)", 
            values %$href
        ) or do {
            error( $dbh->error );
            return;
        };
        
        return 1;
    }
}

{   my %map = (
        _source_search_module_tree  
            => [ module => module => 'CPANPLUS::Module' ],
        _source_search_author_tree  
            => [ author => cpanid => 'CPANPLUS::Module::Author' ],
    );        

    while( my($sub, $aref) = each %map ) {
        no strict 'refs';
        
        my($table, $key, $class) = @$aref;
        *$sub = sub {
            my $self = shift;
            my %hash = @_;
            my $dbh  = $self->__sqlite_dbh;
            
            my($list,$type);
            my $tmpl = {
                allow   => { required   => 1, default   => [ ], strict_type => 1,
                             store      => \$list },
                type    => { required   => 1, allow => [$class->accessors()],
                             store      => \$type },
            };
        
            check( $tmpl, \%hash ) or return;
        
        
            ### we aliased 'module' to 'name', so change that here too
            $type = 'module' if $type eq 'name';
        
            my $res = $dbh->query( "SELECT * from $table" );
            
            my $meth = $table .'_tree';
            my @rv = map  { $self->$meth( $_->{$key} ) } 
                     grep { allow( $_->{$type} => $list ) } $res->hashes;
        
            return @rv;
        }
    }
}



sub __sqlite_create_db {
    my $self = shift;
    my $dbh  = $self->__sqlite_dbh;
    
    ### we can ignore the result/error; not all sqlite implementations
    ### support this    
    $dbh->query( qq[
        DROP TABLE IF EXISTS author;
        \n]
     ) or do {
        msg( $dbh->error );
    }; 
    $dbh->query( qq[
        DROP TABLE IF EXISTS module;
        \n]
     ) or do {
        msg( $dbh->error );
    }; 


    
    $dbh->query( qq[
        /* the author information */
        CREATE TABLE author (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            
            author  varchar(255),
            email   varchar(255),
            cpanid  varchar(255)
        );
        \n]

    ) or do {
        error( $dbh->error );
        return;
    };

    $dbh->query( qq[
        /* the module information */
        CREATE TABLE module (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            
            module      varchar(255),
            version     varchar(255),
            path        varchar(255),
            comment     varchar(255),
            author      varchar(255),
            package     varchar(255),
            description varchar(255),
            dslip       varchar(255),
            mtime       varchar(255)
        );
        
        \n]

    ) or do {
        error( $dbh->error );
        return;
    };        

    $dbh->query( qq[
        /* the module index */
        CREATE INDEX IX_module_module ON module (
            module
        );

        \n]

    ) or do {
        error( $dbh->error );
        return;
    };

    $dbh->query( qq[
        /* the version index */
        CREATE INDEX IX_module_version ON module (
            version
        );

        \n]

    ) or do {
        error( $dbh->error );
        return;
    };

    $dbh->query( qq[
        /* the module-version index */
        CREATE INDEX IX_module_module_version ON module (
            module, version
        );

        \n]

    ) or do {
        error( $dbh->error );
        return;
    };

    return 1;    
}

1;