use base 'DBM::Deep';
sub _get_self {
- eval { tied( %{$_[0]} ) } || $_[0]
+ 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.
##
my $class = shift;
- my $args;
- if (scalar(@_) > 1) {
- if ( @_ % 2 ) {
- $class->_throw_error( "Odd number of parameters to TIEHASH" );
- }
- $args = {@_};
- }
- #XXX This use of ref() is bad and is a bug
- elsif (ref($_[0])) { $args = $_[0]; }
- else { $args = { file => shift }; }
+ my $args = $class->_get_args( @_ );
$args->{type} = $class->TYPE_HASH;
return $class->_init($args);
}
+sub FETCH {
+ my $self = shift->_get_self;
+ my $key = ($self->_root->{filter_store_key})
+ ? $self->_root->{filter_store_key}->($_[0])
+ : $_[0];
+
+ return $self->SUPER::FETCH( $key );
+}
+
sub STORE {
my $self = shift->_get_self;
- my $key = ($self->root->{filter_store_key})
- ? $self->root->{filter_store_key}->($_[0])
+ my $key = ($self->_root->{filter_store_key})
+ ? $self->_root->{filter_store_key}->($_[0])
: $_[0];
my $value = $_[1];
return $self->SUPER::STORE( $key, $value );
}
+sub EXISTS {
+ my $self = shift->_get_self;
+ my $key = ($self->_root->{filter_store_key})
+ ? $self->_root->{filter_store_key}->($_[0])
+ : $_[0];
+
+ return $self->SUPER::EXISTS( $key );
+}
+
+sub DELETE {
+ my $self = shift->_get_self;
+ my $key = ($self->_root->{filter_store_key})
+ ? $self->_root->{filter_store_key}->($_[0])
+ : $_[0];
+
+ return $self->SUPER::DELETE( $key );
+}
+
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);
$self->unlock();
- return ($result && $self->root->{filter_fetch_key})
- ? $self->root->{filter_fetch_key}->($result)
+ return ($result && $self->_root->{filter_fetch_key})
+ ? $self->_root->{filter_fetch_key}->($result)
: $result;
}
##
# 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];
+ my $prev_key = ($self->_root->{filter_store_key})
+ ? $self->_root->{filter_store_key}->($_[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 );
$self->unlock();
- return ($result && $self->root->{filter_fetch_key})
- ? $self->root->{filter_fetch_key}->($result)
+ return ($result && $self->_root->{filter_fetch_key})
+ ? $self->_root->{filter_fetch_key}->($result)
: $result;
}
##
# 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__