1 package DBM::Deep::Hash;
6 use warnings FATAL => 'all';
11 eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0]
14 sub _repr { return {} }
18 my $args = $class->_get_args( @_ );
20 $args->{type} = $class->TYPE_HASH;
22 return $class->_init($args);
26 my $self = shift->_get_self;
27 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
28 my $key = ($self->_engine->storage->{filter_store_key})
29 ? $self->_engine->storage->{filter_store_key}->($_[0])
32 return $self->SUPER::FETCH( $key, $_[0] );
36 my $self = shift->_get_self;
37 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
38 my $key = ($self->_engine->storage->{filter_store_key})
39 ? $self->_engine->storage->{filter_store_key}->($_[0])
43 return $self->SUPER::STORE( $key, $value, $_[0] );
47 my $self = shift->_get_self;
48 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
49 my $key = ($self->_engine->storage->{filter_store_key})
50 ? $self->_engine->storage->{filter_store_key}->($_[0])
53 return $self->SUPER::EXISTS( $key );
57 my $self = shift->_get_self;
58 DBM::Deep->_throw_error( "Cannot use an undefined hash key." ) unless defined $_[0];
59 my $key = ($self->_engine->storage->{filter_store_key})
60 ? $self->_engine->storage->{filter_store_key}->($_[0])
63 return $self->SUPER::DELETE( $key, $_[0] );
66 # Locate and return first key (in no particular order)
68 my $self = shift->_get_self;
72 my $result = $self->_engine->get_next_key( $self );
76 return ($result && $self->_engine->storage->{filter_fetch_key})
77 ? $self->_engine->storage->{filter_fetch_key}->($result)
81 # Return next key (in no particular order), given previous one
83 my $self = shift->_get_self;
85 my $prev_key = ($self->_engine->storage->{filter_store_key})
86 ? $self->_engine->storage->{filter_store_key}->($_[0])
91 my $result = $self->_engine->get_next_key( $self, $prev_key );
95 return ($result && $self->_engine->storage->{filter_fetch_key})
96 ? $self->_engine->storage->{filter_fetch_key}->($result)
100 sub first_key { (shift)->FIRSTKEY(@_) }
101 sub next_key { (shift)->NEXTKEY(@_) }
107 my $key = $self->first_key();
109 my $value = $self->get($key);
110 $self->_copy_value( \$db_temp->{$key}, $value );
111 $key = $self->next_key($key);