1 package DBM::Deep::Hash;
8 our $VERSION = q(0.99_01);
13 eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0]
16 sub _repr { shift;return { @_ } }
23 local $SIG{'__DIE__'};
24 foreach my $key (keys %$struct) {
25 $self->put($key, $struct->{$key});
28 $self->_throw_error("Cannot import: type mismatch");
36 # Tied hash constructor method, called by Perl's tie() function.
39 my $args = $class->_get_args( @_ );
41 $args->{type} = $class->TYPE_HASH;
43 return $class->_init($args);
47 my $self = shift->_get_self;
48 my $key = ($self->_fileobj->{filter_store_key})
49 ? $self->_fileobj->{filter_store_key}->($_[0])
52 return $self->SUPER::FETCH( $key, $_[0] );
56 my $self = shift->_get_self;
57 my $key = ($self->_fileobj->{filter_store_key})
58 ? $self->_fileobj->{filter_store_key}->($_[0])
62 return $self->SUPER::STORE( $key, $value, $_[0] );
66 my $self = shift->_get_self;
67 my $key = ($self->_fileobj->{filter_store_key})
68 ? $self->_fileobj->{filter_store_key}->($_[0])
71 return $self->SUPER::EXISTS( $key );
75 my $self = shift->_get_self;
76 my $key = ($self->_fileobj->{filter_store_key})
77 ? $self->_fileobj->{filter_store_key}->($_[0])
80 return $self->SUPER::DELETE( $key, $_[0] );
85 # Locate and return first key (in no particular order)
87 my $self = shift->_get_self;
90 # Request shared lock for reading
92 $self->lock( $self->LOCK_SH );
94 my $result = $self->{engine}->get_next_key($self);
98 return ($result && $self->_fileobj->{filter_fetch_key})
99 ? $self->_fileobj->{filter_fetch_key}->($result)
105 # Return next key (in no particular order), given previous one
107 my $self = shift->_get_self;
109 my $prev_key = ($self->_fileobj->{filter_store_key})
110 ? $self->_fileobj->{filter_store_key}->($_[0])
113 my $prev_md5 = $self->{engine}{digest}->($prev_key);
116 # Request shared lock for reading
118 $self->lock( $self->LOCK_SH );
120 my $result = $self->{engine}->get_next_key( $self, $prev_md5 );
124 return ($result && $self->_fileobj->{filter_fetch_key})
125 ? $self->_fileobj->{filter_fetch_key}->($result)
130 # Public method aliases
132 sub first_key { (shift)->FIRSTKEY(@_) }
133 sub next_key { (shift)->NEXTKEY(@_) }
139 my $key = $self->first_key();
141 my $value = $self->get($key);
142 $self->_copy_value( \$db_temp->{$key}, $value );
143 $key = $self->next_key($key);