/[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 95 by dpavlin, Sun Jul 13 21:54:22 2003 UTC revision 140 by dpavlin, Thu Oct 30 00:10:09 2003 UTC
# Line 107  sub insert { Line 107  sub insert {
107          }          }
108  }  }
109    
110  sub check {  sub count {
111          my $self = shift;          my $self = shift;
112    
113          my $field = shift;          my $field = shift;
114            my $where = shift;
115    
116          my $sql = "select count(*) from $field";          my $sql = "select count(*) from $field where upper(item) like upper(?)||'%'";
117    
118          my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();          my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();
119          $sth->execute() || die "sql: $sql; ".$self->{dbh}->errstr();          $sth->execute($where) || die "sql: $sql; ".$self->{dbh}->errstr();
120    
121          my ($total) = $sth->fetchrow_array();          my ($total) = $sth->fetchrow_array();
122    
# Line 127  sub fetch { Line 128  sub fetch {
128          my $self = shift;          my $self = shift;
129    
130          my $field = shift;          my $field = shift;
         my $what = shift || 'item';     # 'item,ident'  
131          my $where = shift;          my $where = shift;
132    
133          my $from_ord = shift || 0;          my $from_ord = shift || 0;
# Line 135  sub fetch { Line 135  sub fetch {
135    
136          my @sql_args;          my @sql_args;
137    
138          my $sql = "select $what,ord from $field";          my $sql = "select item,ord from $field";
139    
140          if ($where) {          if ($where) {
141                  my $sql2 = " select ord from $field where upper($what) like upper(?)||'%'";                  my $sql2 = "select ord from $field where upper(item) like upper(?)||'%'";
142                  my $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();                  my $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();
143    
144                  $sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();                  $sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();
145                  if (my $row = $sth->fetchrow_hashref) {                  if (my $row = $sth->fetchrow_hashref) {
146                          $from_ord += $row->{ord} - 1;                          $from_ord += $row->{ord} - 1;
147                    } else {
148                            # if no match is found when searching from beginning
149                            # of word in index, try substring match anywhere
150                            $sql2 = "select ord from $field where upper(item) like '%'||upper(?)||'%'";
151                            $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();
152                            $sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();
153                            if (my $row = $sth->fetchrow_hashref) {
154                                    $from_ord += $row->{ord} - 1;
155                            }
156                  }                  }
157          }          }
158          $sql .= " order by ord limit $rows offset $from_ord";          $sql .= " order by ord limit $rows offset $from_ord";

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