/[webpac]/trunk/index_DBI_cache.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 188 by dpavlin, Sat Nov 29 19:07:00 2003 UTC revision 623 by dpavlin, Sat Jan 1 19:09:53 2005 UTC
# Line 11  use strict qw(vars); Line 11  use strict qw(vars);
11  use vars qw($Count);  use vars qw($Count);
12  use HTML::Entities;  use HTML::Entities;
13  use URI::Escape;  use URI::Escape;
14    use locale;
15    
16  use DBI;  use DBI;
17    
# Line 43  sub new { Line 44  sub new {
44          my $user = shift || die "need dbi_user= in [global] section of configuration file";          my $user = shift || die "need dbi_user= in [global] section of configuration file";
45          my $passwd = shift || die "need dbi_passwd= in [global] section of configuration file";          my $passwd = shift || die "need dbi_passwd= in [global] section of configuration file";
46    
47            $self->{dbd} = $dbd;
48    
49          $self->{dbh} = DBI->connect("DBI:$dbd:$dsn",$user,$passwd) || die $DBI::errstr;          $self->{dbh} = DBI->connect("DBI:$dbd:$dsn",$user,$passwd) || die $DBI::errstr;
50          $Count++;          $Count++;
51    
52          $self->bench("connected to $dbd as $user");          $self->bench("connected to $dbd as $user");
53    
54            # force SQLite to support binary 0 in data (which shouldn't
55            # happend, but it did to me)
56            eval {
57                    no warnings 'all';
58                    $self->{dbh}->{sqlite_handle_binary_nulls} = 1;
59            };
60    
61          return $self;          return $self;
62  }  }
63    
# Line 59  sub delete_and_create { Line 69  sub delete_and_create {
69  #print "#### delete_and_create($field)\n";  #print "#### delete_and_create($field)\n";
70    
71          my $sql = "select count(*) from $field";          my $sql = "select count(*) from $field";
72          my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();          my $sth = $self->{dbh}->prepare($sql);
73  # FIX: this is not a good way to check if table exists!  # FIX: this is not a good way to check if table exists!
74          if ($sth->execute() && $sth->fetchrow_hashref) {          if ($sth && $sth->execute() && $sth->fetchrow_hashref) {
75                  my $sql = "drop table $field";                  my $sql = "drop table $field";
76                  my $sth = $self->{dbh}->do($sql) || die "SQL: $sql ".$self->{dbh}->errstr();                  my $sth = $self->{dbh}->do($sql) || warn "SQL: $sql - ".$sth->errstr();
77          }          }
78          $sql = "create table $field (          $sql = "create table $field (
79                          item varchar(255),                          item varchar(255),
# Line 92  sub insert { Line 102  sub insert {
102    
103          #$sth_cache{$field."select"}->execute($index_data) || die "cache: $field select; ".$self->{dbh}->errstr();          #$sth_cache{$field."select"}->execute($index_data) || die "cache: $field select; ".$self->{dbh}->errstr();
104    
         # XXX for some strange reason, it seems that some entries in my  
         # database produce strings which start with null byte. I suspect  
         # this to be bug in OpenIsis 0.9.0.  
         # This should fix it..  
         $index_data =~ s/^[^\w]+//;  
         $index_data = substr($index_data,0,255);  
   
105          my $uc = uc($index_data);          my $uc = uc($index_data);
106          if (! $c_table->{$field}->{$uc}) {          if (! $c_table->{$field}->{$uc}) {
107  #print stderr "in index: $index_data\n";  #print stderr "in index: $index_data\n";
# Line 160  sub fetch { Line 163  sub fetch {
163                  } else {                  } else {
164                          # if no match is found when searching from beginning                          # if no match is found when searching from beginning
165                          # of word in index, try substring match anywhere                          # of word in index, try substring match anywhere
166                          $sql2 = "select ord from $field where upper(item) like '%'||upper(?)||'%'";                          $sql2 = "select ord from $field where upper(item) like '% '||upper(?)||'%'";
167                          $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();                          $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();
168                          $sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();                          $sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();
169                          if (my $row = $sth->fetchrow_hashref) {                          if (my $row = $sth->fetchrow_hashref) {
# Line 192  sub close { Line 195  sub close {
195    
196                  $self->{dbh}->begin_work || die $self->{dbh}->errstr();                  $self->{dbh}->begin_work || die $self->{dbh}->errstr();
197    
198                  $self->bench("Sorting ".$Table{$table}." items in $table");                  $self->bench("Sorting ".$Table{$table}." (with duplicates) items in $table");
199                  my @keys = sort keys %{$c_table->{$table}};                  my @keys = sort keys %{$c_table->{$table}};
200    
201                  $self->bench("Dumping data into $table");                  $self->bench("Dumping ".($#keys+1)." items into $table");
202                  my $sql = "insert into $table (ord,item,display,count) values (?,?,?,?)";                  my $sql = "insert into $table (ord,item,display,count) values (?,?,?,?)";
203                  my $sth = $self->{dbh}->prepare($sql) || die "sql: $sql; ".$self->{dbh}->errstr();                  my $sth = $self->{dbh}->prepare($sql) || die "sql: $sql; ".$self->{dbh}->errstr();
204    
# Line 210  sub close { Line 213  sub close {
213    
214                  $self->{dbh}->commit || die $self->{dbh}->errstr();                  $self->{dbh}->commit || die $self->{dbh}->errstr();
215          }          }
216    
217            if ($self->{dbd} =~ m/(Pg|SQLite)/) {
218                    $self->{dbh}->do(qq{vacuum}) || warn "vacumming failed. It shouldn't if you are using PostgreSQL or SQLite: ".$self->{dbh}->errstr();
219            }
220    
221          $self->bench("disconnecting from database");          $self->bench("disconnecting from database");
222    
223          $self->{dbh}->disconnect;          $self->{dbh}->disconnect;
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