--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Lib/DOM/Providers/Headlines.pm	Tue Jul 14 12:54:37 2009 +0400
@@ -0,0 +1,128 @@
+package DOM::Providers::Headlines::Headline;
+use Common;
+use Time::Local;
+our @ISA = qw(Object);
+
+BEGIN {
+    DeclareProperty(Id => ACCESS_READ);
+    DeclareProperty(DateModify => ACCESS_READ);
+    DeclareProperty(DateExpire => ACCESS_READ);
+    DeclareProperty(URL => ACCESS_READ);
+    DeclareProperty(Text => ACCESS_READ);
+    DeclareProperty(Channel => ACCESS_READ);
+}
+
+sub str2time {
+    my $str = shift;
+    
+    if ($str =~ /^(\d{4})-(\d{2})-(\d{2})(?:\s(\d{2}):(\d{2}):(\d{2}))?$/) {
+        my ($year,$month,$day,$hh,$mm,$ss) = ($1,$2-1,$3,(defined $4 ? $4 : 0),(defined $5 ? $5 : 0),(defined $6 ? $6 : 0));
+        return timelocal($ss,$mm,$hh,$day,$month,$year);
+    } else {
+        die new Exception("A string '$str' isn't an ISO standard time");
+    }
+}
+
+sub IsActive {
+    my ($this) = @_;
+    my $timeExpire = str2time($this->{$DateExpire});
+
+    return ($timeExpire > time());
+}
+
+package DOM::Providers::Headlines::Collection;
+use Common;
+our @ISA = qw (Object);
+
+BEGIN {
+    DeclareProperty(Items => ACCESS_READ);
+}
+
+sub CTOR {
+    my ($this,%args) = @_;
+
+    foreach my $headline (@{$args{'Items'}}) {
+        $this->{$Items}->{$headline->Id()} = $headline if ($headline->IsActive)
+    }
+}
+
+sub as_list {
+    my $this = shift;
+
+    return [ map { $this->{$Items}->{$_} } sort keys %{$this->{$Items}} ];
+}
+
+sub GenerateRandomSequence {
+    my ($count,$max) = @_;
+
+    my %hash;
+    $hash{rand()} = $_ foreach (0 .. $max - 1);
+    my @sequence = map { $hash{$_} } sort keys %hash;
+    return splice @sequence,0,$count;
+}
+
+sub Random {
+    my ($this,$count) = @_;
+
+    my $list = $this->as_list();
+    
+    return [map { $list->[$_] } GenerateRandomSequence($count,scalar(@$list))];
+}
+
+sub Recent {
+    my ($this,$count) = @_;
+    
+    my @result = sort { $b->DateModify() cmp $a->DateModify() } values %{$this->{$Items}};
+    splice @result,$count;
+    
+    return \@result;
+}
+
+sub AddItem {
+    my ($this,$newItem) = @_;
+    
+    $this->{$Items}->{$newItem->Id()} = $newItem;
+}
+
+package DOM::Providers::Headlines;
+use Common;
+use ObjectStore::Headlines;
+
+our $DBPath;
+our $Encoding;
+
+my %Channels;
+
+eval {
+    LoadHeadlines();
+};
+
+if ($@) {
+    my $err = $@;
+    if (ref $err eq 'Exception') {
+        die $err->ToString();
+    } else {
+        die $err;
+    }
+}
+
+
+sub GetProviderInfo {
+    return {
+        Name => 'Headlines',
+        Host => 'DOM::Site',
+        Objects => \%Channels
+    }
+}
+
+sub LoadHeadlines {
+    my $dsHeadlines = new ObjectStore::Headlines(DBPath => $DBPath, HeadlineClass => 'DOM::Providers::Headlines::Headline', Encoding => $Encoding);
+    
+    foreach my $headline (@{$dsHeadlines->Search(Filter => sub { return $_[0]->IsActive(); } )}) {
+        my $channel = $headline->Channel() || 'main';
+        $Channels{$channel} = new DOM::Providers::Headlines::Collection() if not exists $Channels{$channel};
+        $Channels{$channel}->AddItem($headline);
+    }
+}
+
+1;
\ No newline at end of file