(RT #40782) '0' as a hashkey wasn't iterated over correctly.

[dbsrgits/DBM-Deep.git] / lib / DBM / Deep / Engine.pm

diff --git a/lib/DBM/Deep/Engine.pm b/lib/DBM/Deep/Engine.pm
index ad6bff4..0419be7 100644 (file)
--- a/lib/DBM/Deep/Engine.pm
+++ b/lib/DBM/Deep/Engine.pm
@@ -5,6 +5,8 @@ use 5.006_000;
 use strict;
 use warnings FATAL => 'all';
 
+our $VERSION = $DBM::Deep::VERSION;
+
 use DBM::Deep::Iterator ();
 
 # File-wide notes:
@@ -22,8 +24,8 @@ DBM::Deep::Engine
 
 =head1 PURPOSE
 
-This is an internal-use-only object for L<DBM::Deep/>. It mediates the low-level
-mapping between the L<DBM::Deep/> objects and the storage medium.
+This is an internal-use-only object for L<DBM::Deep>. It mediates the low-level
+mapping between the L<DBM::Deep> objects and the storage medium.
 
 The purpose of this documentation is to provide low-level documentation for
 developers. It is B<not> intended to be used by the general public. This
@@ -166,7 +168,7 @@ sub delete_key { die "delete_key must be implemented in a child class" }
 =head2 write_value( $obj, $key, $value )
 
 This takes an object that provides _base_offset(), a string for the
-key, and a value. This value can be anything storable within L<DBM::Deep/>.
+key, and a value. This value can be anything storable within L<DBM::Deep>.
 
 This returns 1 upon success.
 
@@ -242,7 +244,7 @@ sub get_next_key {
 
     # XXX Need to add logic about resetting the iterator if any key in the
     # reference has changed
-    unless ( $prev_key ) {
+    unless ( defined $prev_key ) {
         $obj->{iterator} = $self->iterator_class->new({
             base_offset => $obj->_base_offset,
             engine      => $self,