X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;ds=sidebyside;f=perl%2Flib%2FIDZebra%2FResultset.pm;h=7408d353280e791cbfe3350d6a81a934dc9a48dc;hb=8435c4aa3528b121b17304862a883bc322f75576;hp=d964e2dbcb8966849dd89141c92458129feab104;hpb=5981b70de0f2d78207ec598384a4b7915c012da9;p=idzebra-moved-to-github.git

diff --git a/perl/lib/IDZebra/Resultset.pm b/perl/lib/IDZebra/Resultset.pm
index d964e2d..7408d35 100644
--- a/perl/lib/IDZebra/Resultset.pm
+++ b/perl/lib/IDZebra/Resultset.pm
@@ -1,4 +1,4 @@
-# $Id: Resultset.pm,v 1.5 2003-03-03 00:45:37 pop Exp $
+# $Id: Resultset.pm,v 1.9 2003-03-06 23:32:10 pop Exp $
 # 
 # Zebra perl API header
 # =============================================================================
@@ -12,7 +12,7 @@ BEGIN {
     use IDZebra::Logger qw(:flags :calls);
     use Scalar::Util qw(weaken);
     use Carp;
-    our $VERSION = do { my @r = (q$Revision: 1.5 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r }; 
+    our $VERSION = do { my @r = (q$Revision: 1.9 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r }; 
     our @ISA = qw(IDZebra::Logger);
 }
 
@@ -60,9 +60,18 @@ sub errString {
 
 # =============================================================================
 sub DESTROY {
-    my ($self) = @_;
+    my $self = shift;
 
+#    print STDERR "Destroy RS\n";
     # Deleteresultset?
+    
+    my $stats = 0;
+    if ($self->{session}{zh}) { 
+	my $r = IDZebra::deleteResultSet($self->{session}{zh},
+					 0, #Z_DeleteRequest_list,
+					 1,[$self->{name}],
+					 $stats);
+    }
 
     if ($self->{odr_stream}) {
         IDZebra::odr_reset($self->{odr_stream});
@@ -70,17 +79,26 @@ sub DESTROY {
 	$self->{odr_stream} = undef;  
     }
 
-#    delete($self->{ro});
-#    delete($self->{session}{resultsets}{$self->{name}});
     delete($self->{session});
 }
 # -----------------------------------------------------------------------------
 sub records {
     my ($self, %args) = @_;
 
+    unless ($self->{session}{zh}) { 
+	croak ("Session is closed or out of scope");
+    }
     my $from = $args{from} ? $args{from} : 1;
     my $to   = $args{to}   ? $args{to}   : $self->{recordCount};
 
+    if (($to-$from) >= 1000) {
+	if ($args{to}) {
+	    croak ("Cannot fetch more than 1000 records at a time");
+	} else {
+	    $to = $from + 999;
+	}
+    }
+
     my $elementSet   = $args{elementSet}   ? $args{elementSet}    : 'R';
     my $schema       = $args{schema}       ? $args{schema}        : '';
     my $recordSyntax = $args{recordSyntax} ? $args{recordSyntax}  : '';
@@ -99,7 +117,6 @@ sub records {
 			      $to,
 			      $ro);
 
-
     my @res = ();
 
     for (my $i=$from; $i<=$to; $i++) {
@@ -108,7 +125,7 @@ sub records {
 	if ($class) {
 	    
 	} else {
-	    push (@res, $rec);
+	    push (@res, $rec); 
 	}
     }
 
@@ -120,9 +137,14 @@ sub records {
 # ============================================================================
 sub sort {
     my ($self, $sortspec, $setname) = @_;
+
+    unless ($self->{session}{zh}) { 
+	croak ("Session is closed or out of scope");
+    }
+
     unless ($setname) {
-	$_[0] = $self->{session}->sortResultsets($sortspec, 
-						 $self->{name}, ($self));
+	return ($_[0] = $self->{session}->sortResultsets($sortspec, 
+						 $self->{session}->_new_setname, ($self)));
 	return ($_[0]);
     } else {
 	return ($self->{session}->sortResultsets($sortspec, 
@@ -139,20 +161,92 @@ IDZebra::Resultset - Representation of Zebra search results
 
 =head1 SYNOPSIS
 
+  $count = $rs->count;
+
+  printf ("RS Status is %d (%s)\n", $rs->errCode, $rs->errString);
+
+  my @recs = $rs->records(from => 1,
+			  to   => 10);
+
 =head1 DESCRIPTION
 
 The I<Resultset> object represents results of a Zebra search. Contains number of hits, search status, and can be used to sort and retrieve the records.
 
 =head1 PROPERTIES
 
-  $count = $rs->count;
+The folowing properties are available, trough object methods and the object hash reference:
 
-  printf ("RS Status is %d (%s)\n", $rs->errCode, $rs->errString);
+=over 4
+
+=item B<errCode>
+
+The error code returned from search, resulting the Resultset object.
+
+=item B<errString>
+
+The optional error string
+
+=item B<recordCount>
+
+The number of hits (records available) in the resultset
+
+=item B<count>
 
-I<$rs-E<gt>errCode> is 0, if there were no errors during search.
+Just the synonym for I<recordCount>
+
+=back
 
 =head1 RETRIEVING RECORDS
 
+In order to retrieve records, use the I<records> method:
+
+  my @recs = $rs->records();
+
+By default this is going to return an array of IDZebra::RetrievalRecord objects. The possible arguments are:
+
+=over 4
+
+=item B<from>
+
+Retrieve records from the given position. The first record corresponds to position 1. If not specified, retrieval starts from the first record.
+
+=item B<to>
+
+The last record position to be fetched. If not specified, all records are going to be fetched, starting from position I<from>.
+
+=item B<elementSet>
+
+The element set used for retrieval. If not specified 'I<R>' is used, which will return the "record" in the original format (ie.: without extraction, just as the original file, or data buffer in the update call).
+
+=item B<schema>
+
+The schema used for retrieval. The default is "".
+
+=item B<recordSyntax>
+
+The record syntax for retrieval. The default is SUTRS.
+
+=back
+
+=head1 SORTING
+
+You can sort resultsets by calling:
+
+  $rs1->sort($sort_expr);
+
+or create a new sorted resultset:
+
+  $rs2 = $rs1->sort($sort_expr);
+
+The sort expression has the same format as described in the I<yaz_client> documentation. For example:
+
+  $rs1->sort('1=4 id');
+
+will sort thr results by title, in a case insensitive way, in descending order, while
+
+  $rs1->sort('1=4 a');
+
+will sort ascending by titles.
 
 =head1 COPYRIGHT
 
@@ -164,6 +258,6 @@ Peter Popovics, pop@technomat.hu
 
 =head1 SEE ALSO
 
-IDZebra, IDZebra::Data1, Zebra documentation
+Zebra documentation, IDZebra::ResultSet, IDZebra::RetrievalRecord manpages.
 
 =cut