1 package DBM::Deep::Hash;
6 use warnings FATAL => 'all';
8 our $VERSION = $DBM::Deep::VERSION;
13 eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0]
16 sub _repr { return {} }
20 my $args = $class->_get_args( @_ );
22 $args->{type} = $class->TYPE_HASH;
24 return $class->_init($args);
28 my $self = shift->_get_self;
29 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
30 my $key = ($self->_engine->storage->{filter_store_key})
31 ? $self->_engine->storage->{filter_store_key}->($_[0])
34 return $self->SUPER::FETCH( $key, $_[0] );
38 my $self = shift->_get_self;
39 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
40 my $key = ($self->_engine->storage->{filter_store_key})
41 ? $self->_engine->storage->{filter_store_key}->($_[0])
45 return $self->SUPER::STORE( $key, $value, $_[0] );
49 my $self = shift->_get_self;
50 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
51 my $key = ($self->_engine->storage->{filter_store_key})
52 ? $self->_engine->storage->{filter_store_key}->($_[0])
55 return $self->SUPER::EXISTS( $key );
59 my $self = shift->_get_self;
60 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
61 my $key = ($self->_engine->storage->{filter_store_key})
62 ? $self->_engine->storage->{filter_store_key}->($_[0])
65 return $self->SUPER::DELETE( $key, $_[0] );
68 # Locate and return first key (in no particular order)
70 my $self = shift->_get_self;
74 my $result = $self->_engine->get_next_key( $self );
78 return ($result && $self->_engine->storage->{filter_fetch_key})
79 ? $self->_engine->storage->{filter_fetch_key}->($result)
83 # Return next key (in no particular order), given previous one
85 my $self = shift->_get_self;
87 my $prev_key = ($self->_engine->storage->{filter_store_key})
88 ? $self->_engine->storage->{filter_store_key}->($_[0])
93 my $result = $self->_engine->get_next_key( $self, $prev_key );
97 return ($result && $self->_engine->storage->{filter_fetch_key})
98 ? $self->_engine->storage->{filter_fetch_key}->($result)
102 sub first_key { (shift)->FIRSTKEY(@_) }
103 sub next_key { (shift)->NEXTKEY(@_) }
108 while ( defined( my $key = $self->first_key ) ) {
109 $self->_engine->delete_key( $self, $key, $key );
119 my $key = $self->first_key();
121 my $value = $self->get($key);
122 $self->_copy_value( \$db_temp->{$key}, $value );
123 $key = $self->next_key($key);