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#!/usr/bin/perl |
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package KiokuDB::LiveObjects::TXNScope; |
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use Moose; |
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110967
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use Scalar::Util qw(weaken); |
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1339
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use namespace::clean -except => 'meta'; |
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has entries => ( |
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isa => "ArrayRef", |
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is => "ro", |
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default => sub { [] }, |
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); |
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has live_objects => ( |
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isa => "KiokuDB::LiveObjects", |
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is => "ro", |
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required => 1, |
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); |
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has parent => ( |
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isa => __PACKAGE__, |
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is => "ro", |
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); |
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sub push { |
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4313
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7578
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my ( $self, @entries ) = @_; |
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4313
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120848
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my $e = $self->entries; |
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4313
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foreach my $entry ( @entries ) { |
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6782
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push @$e, $entry; |
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34480
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weaken($e->[-1]); |
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} |
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} |
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sub rollback { |
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my $self = shift; |
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140
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$self->live_objects->rollback_entries(grep { defined } splice @{ $self->entries }); |
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4014
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} |
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sub DEMOLISH { |
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1143
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0
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my $self = shift; |
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1143
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if ( my $l = $self->live_objects ) { |
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33009
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if ( my $parent = $self->parent ) { |
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2301
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$l->_set_txn_scope($parent); |
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} else { |
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1075
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33980
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$l->_clear_txn_scope(); |
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} |
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} |
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} |
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__PACKAGE__->meta->make_immutable; |
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__PACKAGE__ |
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__END__ |
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=pod |
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=head1 NAME |
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65
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KiokuDB::LiveObjects::TXNScope - Transaction scope. |
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=head1 SYNOPSIS |
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$txn_scope = $live_objects->new_txn; |
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$txn_scope->update_entries(@updated); |
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$txn_scope->rollback; |
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=head1 DESCRIPTION |
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This is an auxillary class used by transaction scoping to roll back entrries |
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updated during a transaction when it is aborted. |
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This is used internally in L<KiokuDB/txn_do> and should not need to be used |
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directly. |
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=head1 ATTRIBUTES |
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85
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=over 4 |
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=item entries |
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An ordered log of updated entries. |
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=back |
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93
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=head1 METHODS |
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=over 4 |
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=item update_entries |
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Called by L<KiokuDB::LiveObjects/update_entries>. Adds entries to C<entries>. |
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101
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=item rollback |
102
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103
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Calls C<KiokuDB::LiveObjects/rollback_entries> with all the recorded entries. |
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105
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=back |
106
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107
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=cut |
108
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