Removed some dependencies on ->_type, instead moving them into the appropriate child...

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

diff --git a/lib/DBM/Deep/Hash.pm b/lib/DBM/Deep/Hash.pm
index 0c0e909..bb50c59 100644 (file)
--- a/lib/DBM/Deep/Hash.pm
+++ b/lib/DBM/Deep/Hash.pm
@@ -8,6 +8,24 @@ sub _get_self {
     eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0]
 }
 
+sub _repr { shift;return { @_ } }
+
+sub _import {
+    my $self = shift;
+    my ($struct) = @_;
+
+    eval {
+        local $SIG{'__DIE__'};
+        foreach my $key (keys %$struct) {
+            $self->put($key, $struct->{$key});
+        }
+    }; if ($@) {
+        $self->_throw_error("Cannot import: type mismatch");
+    }
+
+    return 1;
+}
+
 sub TIEHASH {
     ##
     # Tied hash constructor method, called by Perl's tie() function.
@@ -61,19 +79,14 @@ sub FIRSTKEY {
        ##
        # Locate and return first key (in no particular order)
        ##
-    my $self = $_[0]->_get_self;
+    my $self = shift->_get_self;
 
        ##
-       # Make sure file is open
-       ##
-       if (!defined($self->_fh)) { $self->_open(); }
-       
-       ##
        # Request shared lock for reading
        ##
        $self->lock( $self->LOCK_SH );
        
-       my $result = $self->_get_next_key();
+       my $result = $self->{engine}->get_next_key($self);
        
        $self->unlock();
        
@@ -86,25 +99,20 @@ sub NEXTKEY {
        ##
        # Return next key (in no particular order), given previous one
        ##
-    my $self = $_[0]->_get_self;
+    my $self = shift->_get_self;
 
        my $prev_key = ($self->_root->{filter_store_key})
-        ? $self->_root->{filter_store_key}->($_[1])
-        : $_[1];
+        ? $self->_root->{filter_store_key}->($_[0])
+        : $_[0];
 
-       my $prev_md5 = $DBM::Deep::DIGEST_FUNC->($prev_key);
+       my $prev_md5 = $self->{engine}{digest}->($prev_key);
 
        ##
-       # Make sure file is open
-       ##
-       if (!defined($self->_fh)) { $self->_open(); }
-       
-       ##
        # Request shared lock for reading
        ##
        $self->lock( $self->LOCK_SH );
        
-       my $result = $self->_get_next_key( $prev_md5 );
+       my $result = $self->{engine}->get_next_key( $self, $prev_md5 );
        
        $self->unlock();
        
@@ -116,8 +124,22 @@ sub NEXTKEY {
 ##
 # Public method aliases
 ##
-*first_key = *FIRSTKEY;
-*next_key = *NEXTKEY;
+sub first_key { (shift)->FIRSTKEY(@_) }
+sub next_key { (shift)->NEXTKEY(@_) }
+
+sub _copy_node {
+    my $self = shift->_get_self;
+    my ($db_temp) = @_;
+
+    my $key = $self->first_key();
+    while ($key) {
+        my $value = $self->get($key);
+        $self->_copy_value( \$db_temp->{$key}, $value );
+        $key = $self->next_key($key);
+    }
+
+    return 1;
+}
 
 1;
 __END__