package DBM::Deep::Hash;
+use 5.006_000;
+
use strict;
+use warnings FATAL => 'all';
+no warnings 'recursion';
use base 'DBM::Deep';
eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0]
}
+sub _repr { return {} }
+
sub TIEHASH {
- ##
- # Tied hash constructor method, called by Perl's tie() function.
- ##
my $class = shift;
my $args = $class->_get_args( @_ );
sub FETCH {
my $self = shift->_get_self;
- my $key = ($self->_root->{filter_store_key})
- ? $self->_root->{filter_store_key}->($_[0])
+ DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
+ my $key = ($self->_engine->storage->{filter_store_key})
+ ? $self->_engine->storage->{filter_store_key}->($_[0])
: $_[0];
- return $self->SUPER::FETCH( $key );
+ return $self->SUPER::FETCH( $key, $_[0] );
}
sub STORE {
my $self = shift->_get_self;
- my $key = ($self->_root->{filter_store_key})
- ? $self->_root->{filter_store_key}->($_[0])
+ DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
+ my $key = ($self->_engine->storage->{filter_store_key})
+ ? $self->_engine->storage->{filter_store_key}->($_[0])
: $_[0];
my $value = $_[1];
- return $self->SUPER::STORE( $key, $value );
+ return $self->SUPER::STORE( $key, $value, $_[0] );
}
sub EXISTS {
my $self = shift->_get_self;
- my $key = ($self->_root->{filter_store_key})
- ? $self->_root->{filter_store_key}->($_[0])
+ DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
+ my $key = ($self->_engine->storage->{filter_store_key})
+ ? $self->_engine->storage->{filter_store_key}->($_[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])
+ DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
+ my $key = ($self->_engine->storage->{filter_store_key})
+ ? $self->_engine->storage->{filter_store_key}->($_[0])
: $_[0];
- return $self->SUPER::DELETE( $key );
+ return $self->SUPER::DELETE( $key, $_[0] );
}
+# Locate and return first key (in no particular order)
sub FIRSTKEY {
- ##
- # Locate and return first key (in no particular order)
- ##
- my $self = $_[0]->_get_self;
-
- ##
- # Request shared lock for reading
- ##
- $self->lock( $self->LOCK_SH );
-
- my $result = $self->_get_next_key();
-
- $self->unlock();
-
- return ($result && $self->_root->{filter_fetch_key})
- ? $self->_root->{filter_fetch_key}->($result)
+ my $self = shift->_get_self;
+
+ $self->lock_shared;
+
+ my $result = $self->_engine->get_next_key( $self );
+
+ $self->unlock;
+
+ return ($result && $self->_engine->storage->{filter_fetch_key})
+ ? $self->_engine->storage->{filter_fetch_key}->($result)
: $result;
}
+# Return next key (in no particular order), given previous one
sub NEXTKEY {
- ##
- # Return next key (in no particular order), given previous one
- ##
- my $self = $_[0]->_get_self;
-
- my $prev_key = ($self->_root->{filter_store_key})
- ? $self->_root->{filter_store_key}->($_[1])
- : $_[1];
-
- my $prev_md5 = $DBM::Deep::DIGEST_FUNC->($prev_key);
-
- ##
- # Request shared lock for reading
- ##
- $self->lock( $self->LOCK_SH );
-
- my $result = $self->_get_next_key( $prev_md5 );
-
- $self->unlock();
-
- return ($result && $self->_root->{filter_fetch_key})
- ? $self->_root->{filter_fetch_key}->($result)
+ my $self = shift->_get_self;
+
+ my $prev_key = ($self->_engine->storage->{filter_store_key})
+ ? $self->_engine->storage->{filter_store_key}->($_[0])
+ : $_[0];
+
+ $self->lock_shared;
+
+ my $result = $self->_engine->get_next_key( $self, $prev_key );
+
+ $self->unlock;
+
+ return ($result && $self->_engine->storage->{filter_fetch_key})
+ ? $self->_engine->storage->{filter_fetch_key}->($result)
: $result;
}
-##
-# Public method aliases
-##
-*first_key = *FIRSTKEY;
-*next_key = *NEXTKEY;
+sub first_key { (shift)->FIRSTKEY(@_) }
+sub next_key { (shift)->NEXTKEY(@_) }
+
+sub _clear {
+ my $self = shift;
+
+ while ( defined( my $key = $self->first_key ) ) {
+ $self->_engine->delete_key( $self, $key, $key );
+ }
+
+ return;
+}
+
+sub _copy_node {
+ my $self = shift;
+ my ($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__