/[Search-Estraier]/trunk/lib/Search/Estraier.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 58 by dpavlin, Fri Jan 6 21:05:05 2006 UTC revision 76 by dpavlin, Mon Jan 16 21:19:44 2006 UTC
# Line 4  use 5.008; Line 4  use 5.008;
4  use strict;  use strict;
5  use warnings;  use warnings;
6    
7  our $VERSION = '0.00';  our $VERSION = '0.04_1';
8    
9  =head1 NAME  =head1 NAME
10    
# Line 12  Search::Estraier - pure perl module to u Line 12  Search::Estraier - pure perl module to u
12    
13  =head1 SYNOPSIS  =head1 SYNOPSIS
14    
15    use Search::Estraier;  =head2 Simple indexer
16    my $est = new Search::Estraier();  
17            use Search::Estraier;
18    
19            # create and configure node
20            my $node = new Search::Estraier::Node;
21            $node->set_url("http://localhost:1978/node/test");
22            $node->set_auth("admin","admin");
23    
24            # create document
25            my $doc = new Search::Estraier::Document;
26    
27            # add attributes
28            $doc->add_attr('@uri', "http://estraier.gov/example.txt");
29            $doc->add_attr('@title', "Over the Rainbow");
30    
31            # add body text to document
32            $doc->add_text("Somewhere over the rainbow.  Way up high.");
33            $doc->add_text("There's a land that I heard of once in a lullaby.");
34    
35            die "error: ", $node->status,"\n" unless ($node->put_doc($doc));
36    
37    =head2 Simple searcher
38    
39            use Search::Estraier;
40    
41            # create and configure node
42            my $node = new Search::Estraier::Node;
43            $node->set_url("http://localhost:1978/node/test");
44            $node->set_auth("admin","admin");
45    
46            # create condition
47            my $cond = new Search::Estraier::Condition;
48    
49            # set search phrase
50            $cond->set_phrase("rainbow AND lullaby");
51    
52            my $nres = $node->search($cond, 0);
53            if (defined($nres)) {
54                    # for each document in results
55                    for my $i ( 0 ... $nres->doc_num - 1 ) {
56                            # get result document
57                            my $rdoc = $nres->get_doc($i);
58                            # display attribte
59                            print "URI: ", $rdoc->attr('@uri'),"\n";
60                            print "Title: ", $rdoc->attr('@title'),"\n";
61                            print $rdoc->snippet,"\n";
62                    }
63            } else {
64                    die "error: ", $node->status,"\n";
65            }
66    
67  =head1 DESCRIPTION  =head1 DESCRIPTION
68    
# Line 25  or Hyper Estraier development files on t Line 74  or Hyper Estraier development files on t
74  It is implemented as multiple packages which closly resamble Ruby  It is implemented as multiple packages which closly resamble Ruby
75  implementation. It also includes methods to manage nodes.  implementation. It also includes methods to manage nodes.
76    
77    There are few examples in C<scripts> directory of this distribution.
78    
79  =cut  =cut
80    
81  =head1 Inheritable common methods  =head1 Inheritable common methods
# Line 205  Returns array with attribute names from Line 256  Returns array with attribute names from
256    
257  sub attr_names {  sub attr_names {
258          my $self = shift;          my $self = shift;
259          croak "attr_names return array, not scalar" if (! wantarray);          return unless ($self->{attrs});
260            #croak "attr_names return array, not scalar" if (! wantarray);
261          return sort keys %{ $self->{attrs} };          return sort keys %{ $self->{attrs} };
262  }  }
263    
# Line 221  Returns value of an attribute. Line 273  Returns value of an attribute.
273  sub attr {  sub attr {
274          my $self = shift;          my $self = shift;
275          my $name = shift;          my $name = shift;
276            return unless (defined($name) && $self->{attrs});
277          return $self->{'attrs'}->{ $name };          return $self->{attrs}->{ $name };
278  }  }
279    
280    
# Line 236  Returns array with text sentences. Line 288  Returns array with text sentences.
288    
289  sub texts {  sub texts {
290          my $self = shift;          my $self = shift;
291          confess "texts return array, not scalar" if (! wantarray);          #confess "texts return array, not scalar" if (! wantarray);
292          return @{ $self->{dtexts} };          return @{ $self->{dtexts} } if ($self->{dtexts});
293  }  }
294    
295    
# Line 251  Return whole text as single scalar. Line 303  Return whole text as single scalar.
303    
304  sub cat_texts {  sub cat_texts {
305          my $self = shift;          my $self = shift;
306          return join(' ',@{ $self->{dtexts} });          return join(' ',@{ $self->{dtexts} }) if ($self->{dtexts});
307  }  }
308    
309    
# Line 460  Return search result attrs. Line 512  Return search result attrs.
512  sub attrs {  sub attrs {
513          my $self = shift;          my $self = shift;
514          #croak "attrs return array, not scalar" if (! wantarray);          #croak "attrs return array, not scalar" if (! wantarray);
515          return @{ $self->{attrs} };          return @{ $self->{attrs} } if ($self->{attrs});
516  }  }
517    
518    
# Line 524  sub new { Line 576  sub new {
576          my $self = {@_};          my $self = {@_};
577          bless($self, $class);          bless($self, $class);
578    
579          foreach my $f (qw/uri attrs snippet keywords/) {          croak "missing uri for ResultDocument" unless defined($self->{uri});
                 croak "missing $f for ResultDocument" unless defined($self->{$f});  
         }  
580    
581          $self ? return $self : return undef;          $self ? return $self : return undef;
582  }  }
# Line 700  use URI::Escape qw/uri_escape/; Line 750  use URI::Escape qw/uri_escape/;
750    
751    my $node = new Search::HyperEstraier::Node;    my $node = new Search::HyperEstraier::Node;
752    
753    or optionally with C<url> as parametar
754    
755      my $node = new Search::HyperEstraier::Node( 'http://localhost:1978/node/test' );
756    
757  =cut  =cut
758    
759  sub new {  sub new {
# Line 717  sub new { Line 771  sub new {
771          };          };
772          bless($self, $class);          bless($self, $class);
773    
774          my $args = {@_};          if ($#_ == 0) {
775                    $self->{url} = shift;
776            } else {
777                    my $args = {@_};
778    
779          $self->{debug} = $args->{debug};                  $self->{debug} = $args->{debug};
780          warn "## Node debug on\n" if ($self->{debug});                  warn "## Node debug on\n" if ($self->{debug});
781            }
782    
783          $self ? return $self : return undef;          $self ? return $self : return undef;
784  }  }
# Line 1176  sub search { Line 1234  sub search {
1234    
1235          my $rv = $self->shuttle_url( $self->{url} . '/search',          my $rv = $self->shuttle_url( $self->{url} . '/search',
1236                  'application/x-www-form-urlencoded',                  'application/x-www-form-urlencoded',
1237                  $self->cond_to_query( $cond ),                  $self->cond_to_query( $cond, $depth ),
1238                  \$resbody,                  \$resbody,
1239          );          );
1240          return if ($rv != 200);          return if ($rv != 200);
# Line 1270  sub search { Line 1328  sub search {
1328    
1329  Return URI encoded string generated from Search::Estraier::Condition  Return URI encoded string generated from Search::Estraier::Condition
1330    
1331    my $args = $node->cond_to_query( $cond );    my $args = $node->cond_to_query( $cond, $depth );
1332    
1333  =cut  =cut
1334    
# Line 1279  sub cond_to_query { Line 1337  sub cond_to_query {
1337    
1338          my $cond = shift || return;          my $cond = shift || return;
1339          croak "condition must be Search::Estraier::Condition, not '$cond->isa'" unless ($cond->isa('Search::Estraier::Condition'));          croak "condition must be Search::Estraier::Condition, not '$cond->isa'" unless ($cond->isa('Search::Estraier::Condition'));
1340            my $depth = shift;
1341    
1342          my @args;          my @args;
1343    
# Line 1288  sub cond_to_query { Line 1347  sub cond_to_query {
1347    
1348          if (my @attrs = $cond->attrs) {          if (my @attrs = $cond->attrs) {
1349                  for my $i ( 0 .. $#attrs ) {                  for my $i ( 0 .. $#attrs ) {
1350                          push @args,'attr' . ($i+1) . '=' . uri_escape( $attrs[$i] );                          push @args,'attr' . ($i+1) . '=' . uri_escape( $attrs[$i] ) if ($attrs[$i]);
1351                  }                  }
1352          }          }
1353    
# Line 1306  sub cond_to_query { Line 1365  sub cond_to_query {
1365                  push @args, 'options=' . $options;                  push @args, 'options=' . $options;
1366          }          }
1367    
1368          push @args, 'depth=' . $self->{depth} if ($self->{depth});          push @args, 'depth=' . $depth if ($depth);
1369          push @args, 'wwidth=' . $self->{wwidth};          push @args, 'wwidth=' . $self->{wwidth};
1370          push @args, 'hwidth=' . $self->{hwidth};          push @args, 'hwidth=' . $self->{hwidth};
1371          push @args, 'awidth=' . $self->{awidth};          push @args, 'awidth=' . $self->{awidth};
# Line 1317  sub cond_to_query { Line 1376  sub cond_to_query {
1376    
1377  =head2 shuttle_url  =head2 shuttle_url
1378    
1379  This is method which uses C<IO::Socket::INET> to communicate with Hyper Estraier node  This is method which uses C<LWP::UserAgent> to communicate with Hyper Estraier node
1380  master.  master.
1381    
1382    my $rv = shuttle_url( $url, $content_type, $req_body, \$resbody );    my $rv = shuttle_url( $url, $content_type, $req_body, \$resbody );
# Line 1327  body will be saved within object. Line 1386  body will be saved within object.
1386    
1387  =cut  =cut
1388    
1389    use LWP::UserAgent;
1390    
1391  sub shuttle_url {  sub shuttle_url {
1392          my $self = shift;          my $self = shift;
1393    
# Line 1345  sub shuttle_url { Line 1406  sub shuttle_url {
1406                  return -1;                  return -1;
1407          }          }
1408    
1409          my ($host,$port,$query) = ($url->host, $url->port, $url->path);          my $ua = LWP::UserAgent->new;
1410            $ua->agent( "Search-Estraier/$Search::Estraier::VERSION" );
         if ($self->{pxhost}) {  
                 ($host,$port) = ($self->{pxhost}, $self->{pxport});  
                 $query = "http://$host:$port/$query";  
         }  
   
         $query .= '?' . $url->query if ($url->query && ! $reqbody);  
   
         my $headers;  
1411    
1412            my $req;
1413          if ($reqbody) {          if ($reqbody) {
1414                  $headers .= "POST $query HTTP/1.0\r\n";                  $req = HTTP::Request->new(POST => $url);
1415          } else {          } else {
1416                  $headers .= "GET $query HTTP/1.0\r\n";                  $req = HTTP::Request->new(GET => $url);
         }  
   
         $headers .= "Host: " . $url->host . ":" . $url->port . "\r\n";  
         $headers .= "Connection: close\r\n";  
         $headers .= "User-Agent: Search-Estraier/$Search::Estraier::VERSION\r\n";  
         $headers .= "Content-Type: $content_type\r\n";  
         $headers .= "Authorization: Basic $self->{auth}\r\n";  
         my $len = 0;  
         {  
                 use bytes;  
                 $len = length($reqbody) if ($reqbody);  
         }  
         $headers .= "Content-Length: $len\r\n";  
         $headers .= "\r\n";  
   
         my $sock = IO::Socket::INET->new(  
                 PeerAddr        => $host,  
                 PeerPort        => $port,  
                 Proto           => 'tcp',  
                 Timeout         => $self->{timeout} || 90,  
         );  
   
         if (! $sock) {  
                 carp "can't open socket to $host:$port";  
                 return -1;  
1417          }          }
1418    
1419          warn $headers if ($self->{debug});          $req->headers->header( 'Host' => $url->host . ":" . $url->port );
1420            $req->headers->header( 'Connection', 'close' );
1421            $req->headers->header( 'Authorization', 'Basic ' . $self->{auth} );
1422            $req->content_type( $content_type );
1423    
1424          print $sock $headers or          warn $req->headers->as_string,"\n" if ($self->{debug});
                 carp "can't send headers to network:\n$headers\n" and return -1;  
1425    
1426          if ($reqbody) {          if ($reqbody) {
1427                  warn "$reqbody\n" if ($self->{debug});                  warn "$reqbody\n" if ($self->{debug});
1428                  print $sock $reqbody or                  $req->content( $reqbody );
                         carp "can't send request body to network:\n$$reqbody\n" and return -1;  
1429          }          }
1430    
1431          my $line = <$sock>;          my $res = $ua->request($req) || croak "can't make request to $url: $!";
         chomp($line);  
         my ($schema, $res_status, undef) = split(/  */, $line, 3);  
         return if ($schema !~ /^HTTP/ || ! $res_status);  
   
         $self->{status} = $res_status;  
         warn "## response status: $res_status\n" if ($self->{debug});  
   
         # skip rest of headers  
         $line = <$sock>;  
         while ($line) {  
                 $line = <$sock>;  
                 $line =~ s/[\r\n]+$//;  
                 warn "## ", $line || 'NULL', " ##\n" if ($self->{debug});  
         };  
1432    
1433          # read body          warn "## response status: ",$res->status_line,"\n" if ($self->{debug});
1434          $len = 0;  
1435          do {          ($self->{status}, $self->{status_message}) = split(/\s+/, $res->status_line, 2);
1436                  $len = read($sock, my $buf, 8192);  
1437                  $$resbody .= $buf if ($resbody);          return -1 if (! $res->is_success);
1438          } while ($len);  
1439            $$resbody .= $res->content;
1440    
1441          warn "## response body:\n$$resbody\n" if ($resbody && $self->{debug});          warn "## response body:\n$$resbody\n" if ($resbody && $self->{debug});
1442    
# Line 1518  sub set_link { Line 1535  sub set_link {
1535          $reqbody .= '&credit=' . $credit if ($credit > 0);          $reqbody .= '&credit=' . $credit if ($credit > 0);
1536    
1537          $self->shuttle_url( $self->{url} . '/_set_link',          $self->shuttle_url( $self->{url} . '/_set_link',
1538                  'text/plain',                  'application/x-www-form-urlencoded',
1539                  $reqbody,                  $reqbody,
1540                  undef                  undef
1541          ) == 200;          ) == 200;
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