From: pop <pop>
Date: Mon, 18 Nov 2002 13:27:19 +0000 (+0000)
Subject: New class to represent a retrieval context. Created as a result of
X-Git-Tag: ZEBRA.1.3.4~18
X-Git-Url: http://sru.miketaylor.org.uk/cgi-bin?a=commitdiff_plain;h=85f354cfc387c5e659c47171821a2e54ad4b2e6e;p=idzebra-moved-to-github.git

New class to represent a retrieval context. Created as a result of
search or sort
---

diff --git a/perl/lib/IDZebra/Resultset.pm b/perl/lib/IDZebra/Resultset.pm
new file mode 100644
index 0000000..38ace67
--- /dev/null
+++ b/perl/lib/IDZebra/Resultset.pm
@@ -0,0 +1,125 @@
+#!/usr/bin/perl
+# ============================================================================
+# Zebra perl API header
+# =============================================================================
+use strict;
+use Carp;
+# ============================================================================
+package IDZebra::Resultset;
+use IDZebra;
+use IDZebra::Logger qw(:flags :calls);
+use IDZebra::Repository;
+use Scalar::Util qw(weaken);
+
+our @ISA = qw(IDZebra::Logger);
+
+1;
+# -----------------------------------------------------------------------------
+# Class constructors, destructor
+# -----------------------------------------------------------------------------
+sub new {
+    my ($proto,$session, %args) = @_;
+    my $class = ref($proto) || $proto;
+    my $self = {};
+    $self->{session} = $session;
+    weaken ($self->{session});
+
+    # Retrieval object
+    $self->{ro} = IDZebra::RetrievalObj->new();
+    $self->{odr_stream} = IDZebra::odr_createmem($IDZebra::ODR_DECODE);
+
+    $self->{name}        = $args{name};
+    $self->{recordCount} = $args{recordCount};
+    $self->{errCode}     = $args{errCode};
+    $self->{errString}   = $args{errString};
+
+    bless ($self, $class);
+    return ($self);
+}
+
+sub DESTROY {
+    my ($self) = @_;
+
+#    print STDERR "Destroy RS\n";
+
+    if ($self->{odr_stream}) {
+        IDZebra::odr_reset($self->{odr_stream});
+        IDZebra::odr_destroy($self->{odr_stream});
+	$self->{odr_stream} = undef;  
+    }
+
+    delete($self->{ro});
+    delete($self->{session});
+}
+# -----------------------------------------------------------------------------
+sub records {
+    my ($self, %args) = @_;
+
+    my $from = $args{from} ? $args{from} : 1;
+    my $to   = $args{to}   ? $args{to}   : $self->{recordCount};
+
+    my $elementSet   = $args{elementSet}   ? $args{elementSet}    : 'R';
+    my $schema       = $args{schema}       ? $args{schema}        : '';
+    my $recordSyntax = $args{recordSyntax} ? $args{recordSyntax}  : '';
+    
+
+    my $ro = IDZebra::RetrievalObj->new();
+    IDZebra::records_retrieve($self->{session}{zh},
+			      $self->{odr_stream},
+			      $self->{name},
+			      $elementSet,
+			      $schema,
+			      $recordSyntax,
+			      $from,
+			      $to,
+			      $ro);
+
+
+    my @res = ();
+
+    for (my $i=$from; $i<=$to; $i++) {
+	my $rec = IDZebra::RetrievalRecord->new();
+        IDZebra::record_retrieve($ro, $self->{odr_stream}, $rec, $i-$from+1);
+	push (@res, $rec);
+    }
+
+    IDZebra::odr_reset($self->{odr_stream});
+
+    return (@res);
+}
+
+sub sort {
+    my ($self, $sortspec, $setname) = @_;
+    unless ($setname) {
+	$_[0] = $self->{session}->sortResultsets($sortspec, 
+						 $self->{name}, ($self));
+	return ($_[0]);
+    } else {
+	return ($self->{session}->sortResultsets($sortspec, 
+						 $setname, ($self)));
+    }
+}
+
+__END__
+
+=head1 NAME
+
+IDZebra::Session - 
+
+=head1 SYNOPSIS
+
+=head1 DESCRIPTION
+
+=head1 COPYRIGHT
+
+Fill in
+
+=head1 AUTHOR
+
+Peter Popovics, pop@technomat.hu
+
+=head1 SEE ALSO
+
+IDZebra, IDZebra::Data1, Zebra documentation
+
+=cut