1 |
dpavlin |
641 |
# |
2 |
|
|
# this file implements index functions using DBI |
3 |
|
|
# and huge amounts of memory for cache speedup |
4 |
|
|
# |
5 |
|
|
# this version doesn't support ident (which sould be location in |
6 |
|
|
# library). But, that functionality is not used anyway... |
7 |
|
|
# |
8 |
|
|
|
9 |
|
|
package index_DBI; |
10 |
|
|
use strict qw(vars); |
11 |
|
|
use vars qw($Count); |
12 |
|
|
use HTML::Entities; |
13 |
|
|
use URI::Escape; |
14 |
|
|
use locale; |
15 |
|
|
use Carp; |
16 |
|
|
|
17 |
|
|
use DBI; |
18 |
|
|
|
19 |
|
|
# bench time |
20 |
|
|
my $bench_time = time(); |
21 |
|
|
|
22 |
|
|
my $debug = 1; |
23 |
|
|
|
24 |
|
|
sub bench { |
25 |
|
|
my $self = shift; |
26 |
|
|
my $msg = shift; |
27 |
|
|
|
28 |
|
|
print STDERR "last operation took ",time()-$bench_time," seconds...\n"; |
29 |
|
|
$bench_time=time(); |
30 |
|
|
print STDERR "$msg\n"; |
31 |
|
|
} |
32 |
|
|
|
33 |
|
|
sub new { |
34 |
|
|
my $class = shift; |
35 |
|
|
my $self = {}; |
36 |
|
|
bless($self, $class); |
37 |
|
|
|
38 |
|
|
my $dbd = shift || die "need dbi_dbd= in [global] section of configuration file"; |
39 |
|
|
my $dsn = shift || die "need dbi_dsn= in [global] section of configuration file"; |
40 |
|
|
my $user = shift || die "need dbi_user= in [global] section of configuration file"; |
41 |
|
|
my $passwd = shift || die "need dbi_passwd= in [global] section of configuration file"; |
42 |
|
|
|
43 |
|
|
$self->{dbd} = $dbd; |
44 |
|
|
|
45 |
|
|
$self->{dbh} = DBI->connect("DBI:$dbd:$dsn",$user,$passwd) || die $DBI::errstr; |
46 |
|
|
$Count++; |
47 |
|
|
|
48 |
|
|
$self->bench("connected to $dbd as $user"); |
49 |
|
|
|
50 |
|
|
# force SQLite to support binary 0 in data (which shouldn't |
51 |
|
|
# happend, but it did to me) |
52 |
|
|
eval { |
53 |
|
|
no warnings 'all'; |
54 |
|
|
$self->{dbh}->{sqlite_handle_binary_nulls} = 1; |
55 |
|
|
}; |
56 |
|
|
|
57 |
|
|
return $self; |
58 |
|
|
} |
59 |
|
|
|
60 |
|
|
sub delete_and_create { |
61 |
|
|
my $self = shift; |
62 |
|
|
|
63 |
|
|
my $index = shift || croak "need index name!"; |
64 |
|
|
my $sql = shift || croak "need sql to create table!"; |
65 |
|
|
|
66 |
|
|
print STDERR "## delete_and_create($index)\n" if ($debug); |
67 |
|
|
|
68 |
|
|
my $sql_delete = "delete from $index"; |
69 |
|
|
my $sth = $self->{dbh}->prepare($sql_delete) || confess "can't prepare: $sql_delete"; |
70 |
|
|
|
71 |
dpavlin |
642 |
if ($sth->execute()) { |
72 |
|
|
print STDERR "## deleted rows from table $index\n" if ($debug); |
73 |
|
|
} else { |
74 |
dpavlin |
641 |
# can't delete from table, assume it doesn't exists! |
75 |
|
|
$self->{dbh}->rollback; |
76 |
|
|
$self->{dbh}->do($sql) || confess "SQL: $sql ".$self->{dbh}->errstr(); |
77 |
|
|
print STDERR "## creating table $index\n" if ($debug); |
78 |
|
|
$self->{dbh}->begin_work; |
79 |
|
|
} |
80 |
|
|
} |
81 |
|
|
|
82 |
|
|
sub insert { |
83 |
|
|
my $self = shift; |
84 |
|
|
|
85 |
|
|
my $field = shift; |
86 |
|
|
my $index_data = shift || print STDERR "\$index->insert($field,NULL,...)"; |
87 |
|
|
my $display = shift || $index_data; |
88 |
dpavlin |
642 |
my $filter = shift; |
89 |
dpavlin |
641 |
|
90 |
|
|
if (! $index_data) { |
91 |
|
|
print STDERR "\$index->insert() -- no value to insert\n"; |
92 |
|
|
return; |
93 |
|
|
} |
94 |
|
|
|
95 |
|
|
$index_data =~ s#&(\w)(acute|cedil|circ|grave|ring|slash|tilde|uml);#$1#gi; |
96 |
|
|
|
97 |
|
|
# strip spaces |
98 |
|
|
$index_data =~ s#^\s+##; |
99 |
|
|
$index_data =~ s#\s+$##; |
100 |
|
|
$index_data =~ s#\s\s+# #g; |
101 |
|
|
|
102 |
|
|
my $uc = uc($index_data); |
103 |
|
|
|
104 |
|
|
if (! $self->{c}->{$uc}->{$field}) { |
105 |
|
|
#print stderr "in index: $index_data\n"; |
106 |
|
|
$self->{c}->{$uc}->{$field}->{item} = $index_data; |
107 |
|
|
$self->{c}->{$uc}->{$field}->{display} = $display; |
108 |
|
|
} |
109 |
|
|
|
110 |
|
|
$self->{c}->{$uc}->{$field}->{count}++; |
111 |
dpavlin |
642 |
$self->{c}->{$uc}->{$field}->{filter}->{$filter}++ if ($filter); |
112 |
dpavlin |
641 |
} |
113 |
|
|
|
114 |
|
|
sub count { |
115 |
|
|
my $self = shift; |
116 |
|
|
|
117 |
|
|
my $field = shift; |
118 |
|
|
my $where = shift; |
119 |
|
|
|
120 |
|
|
my $sql = "select count(*) from index where name = ? and upper(item) like upper(?)||'%'"; |
121 |
|
|
|
122 |
|
|
my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr(); |
123 |
|
|
$sth->execute($field,$where) || die "sql: $sql; ".$self->{dbh}->errstr(); |
124 |
|
|
|
125 |
|
|
my ($total) = $sth->fetchrow_array(); |
126 |
|
|
|
127 |
|
|
# no results, count all |
128 |
|
|
if (! $total) { |
129 |
|
|
my $sql = "select count(*) from index wheere name = ?"; |
130 |
|
|
|
131 |
|
|
my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr(); |
132 |
|
|
$sth->execute($field) || die "sql: $sql; ".$self->{dbh}->errstr(); |
133 |
|
|
$total = $sth->fetchrow_array(); |
134 |
|
|
|
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
return $total || 1; |
138 |
|
|
} |
139 |
|
|
|
140 |
|
|
|
141 |
|
|
sub fetch { |
142 |
|
|
my $self = shift; |
143 |
|
|
|
144 |
|
|
my $field = shift; |
145 |
|
|
my $where = shift; |
146 |
|
|
|
147 |
|
|
my $offset = shift || 0; |
148 |
|
|
my $rows = shift || 10; |
149 |
|
|
my $from_ord = 0; |
150 |
|
|
|
151 |
|
|
my @sql_args; |
152 |
|
|
|
153 |
|
|
my $sql = qq{ |
154 |
|
|
select item,display,count |
155 |
|
|
from index |
156 |
|
|
where name = ? |
157 |
|
|
and ord > ? |
158 |
|
|
order by ord |
159 |
|
|
limit ? offset ? |
160 |
|
|
}; |
161 |
|
|
|
162 |
|
|
if ($where) { |
163 |
|
|
my $sql2 = "select ord from index where name = ? and upper(item) like upper(?)||'%'"; |
164 |
|
|
my $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr(); |
165 |
|
|
|
166 |
|
|
$sth->execute($field, $where) || die "sql2: $sql2; ".$self->{dbh}->errstr(); |
167 |
|
|
if (my $row = $sth->fetchrow_hashref) { |
168 |
|
|
$from_ord += $row->{ord} - 1; |
169 |
|
|
} else { |
170 |
|
|
# if no match is found when searching from beginning |
171 |
|
|
# of word in index, try substring match anywhere |
172 |
|
|
$sql2 = "select ord from index where name = ? and upper(item) like '% '||upper(?)||'%'"; |
173 |
|
|
$sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr(); |
174 |
|
|
$sth->execute($field, $where) || die "sql2: $sql2; ".$self->{dbh}->errstr(); |
175 |
|
|
if (my $row = $sth->fetchrow_hashref) { |
176 |
|
|
$from_ord += $row->{ord} - 1; |
177 |
|
|
} |
178 |
|
|
} |
179 |
|
|
} |
180 |
|
|
|
181 |
|
|
my $sth = $self->{dbh}->prepare($sql) || die "prepare: $sql; ".$self->{dbh}->errstr(); |
182 |
|
|
$sth->execute($field,$from_ord,$rows,$offset) || die "execute: $sql; ".$self->{dbh}->errstr(); |
183 |
|
|
my @arr; |
184 |
|
|
while (my $row = $sth->fetchrow_hashref) { |
185 |
|
|
$row->{item} = HTML::Entities::encode($row->{item},' <>&"'); |
186 |
|
|
$row->{display} = HTML::Entities::encode($row->{display},'<>&"'); |
187 |
|
|
$row->{item} =~ s#&(\w)(acute|cedil|circ|grave|ring|slash|tilde|uml);#$1#gi; |
188 |
|
|
$row->{display} =~ s#&(\w)(acute|cedil|circ|grave|ring|slash|tilde|uml);#&$1$2;#gi; |
189 |
|
|
push @arr,$row; |
190 |
|
|
} |
191 |
|
|
return @arr; |
192 |
|
|
} |
193 |
|
|
|
194 |
|
|
sub close { |
195 |
|
|
my $self = shift; |
196 |
|
|
|
197 |
|
|
return if (! $self->{dbh}); |
198 |
|
|
|
199 |
|
|
$self->{dbh}->begin_work || die $self->{dbh}->errstr(); |
200 |
|
|
|
201 |
|
|
$self->delete_and_create('index', qq{ |
202 |
|
|
create table index ( |
203 |
|
|
name varchar(255), |
204 |
|
|
ord int, |
205 |
|
|
item text, |
206 |
|
|
display text, |
207 |
|
|
count int, |
208 |
|
|
primary key (name,ord) |
209 |
|
|
); |
210 |
|
|
}); |
211 |
|
|
|
212 |
dpavlin |
642 |
$self->delete_and_create('filters', qq{ |
213 |
|
|
create table filters ( |
214 |
|
|
filter varchar(255), |
215 |
dpavlin |
641 |
ord int, |
216 |
|
|
count int, |
217 |
dpavlin |
642 |
primary key (filter,ord) |
218 |
dpavlin |
641 |
); |
219 |
|
|
}); |
220 |
|
|
|
221 |
|
|
$self->bench("getting all entries"); |
222 |
|
|
my @items = keys %{$self->{c}}; |
223 |
|
|
$self->bench("got ".($#items+1)." items, now sorting"); |
224 |
|
|
@items = sort @items; |
225 |
|
|
|
226 |
|
|
my $sql = "insert into index (name,ord,item,display,count) values (?,?,?,?,?)"; |
227 |
|
|
my $sth_index = $self->{dbh}->prepare($sql) || confess "$sql: ".$self->{dbh}->errstr(); |
228 |
|
|
|
229 |
dpavlin |
642 |
$sql = "insert into filters (filter, ord, count) values (?,?,?)"; |
230 |
|
|
my $sth_filter = $self->{dbh}->prepare($sql) || confess "$sql: ".$self->{dbh}->errstr(); |
231 |
dpavlin |
641 |
|
232 |
|
|
my $ord = 0; |
233 |
|
|
foreach my $key (@items) { |
234 |
|
|
|
235 |
|
|
foreach my $field (keys %{$self->{c}->{$key}}) { |
236 |
|
|
# store items |
237 |
|
|
$sth_index->execute( |
238 |
|
|
$field, |
239 |
|
|
++$ord, |
240 |
|
|
$self->{c}->{$key}->{$field}->{item}, |
241 |
|
|
$self->{c}->{$key}->{$field}->{display}, |
242 |
|
|
$self->{c}->{$key}->{$field}->{count}, |
243 |
|
|
); |
244 |
|
|
|
245 |
dpavlin |
642 |
# store filters |
246 |
|
|
next unless ($self->{c}->{$key}->{$field}->{filter}); |
247 |
dpavlin |
641 |
|
248 |
dpavlin |
642 |
foreach my $filter (keys %{$self->{c}->{$key}->{$field}->{filter}}) { |
249 |
|
|
$sth_filter->execute( $filter, $ord, $self->{c}->{$key}->{$field}->{filter}->{$filter} ); |
250 |
dpavlin |
641 |
} |
251 |
|
|
} |
252 |
|
|
|
253 |
|
|
|
254 |
|
|
} |
255 |
|
|
|
256 |
|
|
$self->{dbh}->commit || die $self->{dbh}->errstr(); |
257 |
|
|
|
258 |
|
|
$self->bench("vacuuming"); |
259 |
|
|
|
260 |
|
|
if ($self->{dbd} =~ m/(Pg|SQLite)/) { |
261 |
|
|
$self->{dbh}->do(qq{vacuum}) || carp "vacumming failed. It shouldn't if you are using PostgreSQL or SQLite: ".$self->{dbh}->errstr(); |
262 |
|
|
} |
263 |
|
|
|
264 |
|
|
$self->bench("disconnecting from database"); |
265 |
|
|
|
266 |
|
|
$self->{dbh}->disconnect; |
267 |
|
|
undef $self->{dbh}; |
268 |
|
|
} |
269 |
|
|
|
270 |
|
|
END { |
271 |
|
|
$Count--; |
272 |
|
|
print STDERR "index_DBI fatal error: \$index->close() not called... $Count references left!\n" if ($Count > 0); |
273 |
|
|
# FIX: debug output |
274 |
|
|
# print STDERR "usage\ttable\n"; |
275 |
|
|
# foreach (keys %Table) { |
276 |
|
|
# print STDERR $Table{$_},"\t$_\n"; |
277 |
|
|
# } |
278 |
|
|
} |
279 |
|
|
|
280 |
|
|
1; |