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Name	Size	Permission
BSON	[ DIR ]	drwxr-xr-x
GridFSBucket	[ DIR ]	drwxr-xr-x
Op	[ DIR ]	drwxr-xr-x
QueryResult	[ DIR ]	drwxr-xr-x
Role	[ DIR ]	drwxr-xr-x
Upgrading	[ DIR ]	drwxr-xr-x
BulkWrite.pm	13.6 KB	-rw-r--r--
BulkWriteResult.pm	13.99 KB	-rw-r--r--
BulkWriteView.pm	8.19 KB	-rw-r--r--
ChangeStream.pm	10.71 KB	-rw-r--r--
ClientSession.pm	33.85 KB	-rw-r--r--
Code.pm	1.56 KB	-rw-r--r--
Collection.pm	105.71 KB	-rw-r--r--
CommandResult.pm	5.14 KB	-rw-r--r--
Cursor.pm	26.08 KB	-rw-r--r--
DBRef.pm	1.59 KB	-rw-r--r--
DataTypes.pod	12.78 KB	-rw-r--r--
Database.pm	28.5 KB	-rw-r--r--
DeleteResult.pm	2.41 KB	-rw-r--r--
Error.pm	18.86 KB	-rw-r--r--
Examples.pod	14.35 KB	-rw-r--r--
GridFSBucket.pm	27.45 KB	-rw-r--r--
IndexView.pm	19.83 KB	-rw-r--r--
InsertManyResult.pm	3.41 KB	-rw-r--r--
InsertOneResult.pm	2.32 KB	-rw-r--r--
MongoClient.pm	97.69 KB	-rw-r--r--
Monitoring.pod	7.29 KB	-rw-r--r--
OID.pm	2.17 KB	-rw-r--r--
QueryResult.pm	11.24 KB	-rw-r--r--
ReadConcern.pm	3.87 KB	-rw-r--r--
ReadPreference.pm	8.54 KB	-rw-r--r--
Timestamp.pm	1.6 KB	-rw-r--r--
Tutorial.pod	9.18 KB	-rw-r--r--
UnacknowledgedResult.pm	1.98 KB	-rw-r--r--
UpdateResult.pm	3.54 KB	-rw-r--r--
Upgrading.pod	12.18 KB	-rw-r--r--
WriteConcern.pm	5.05 KB	-rw-r--r--
_Constants.pm	2.87 KB	-rw-r--r--
_Credential.pm	13.58 KB	-rw-r--r--
_Dispatcher.pm	11.87 KB	-rw-r--r--
_Link.pm	18.18 KB	-rw-r--r--
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_TransactionOptions.pm	3.72 KB	-rw-r--r--
_Types.pm	7.11 KB	-rw-r--r--
_URI.pm	19.46 KB	-rw-r--r--

Code Editor : ReadConcern.pm

#  Copyright 2015 - present MongoDB, Inc.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

use strict;
use warnings;
package MongoDB::ReadConcern;

# ABSTRACT: Encapsulate and validate a read concern

use version;
our $VERSION = 'v2.2.2';

use Moo;
use MongoDB::Error;
use Types::Standard qw(
    Maybe
    Str
    ArrayRef
);

use namespace::clean;

#pod =attr level
#pod
#pod The read concern level determines the consistency level required
#pod of data being read.
#pod
#pod The default level is C<undef>, which means the server will use its configured
#pod default.
#pod
#pod If the level is set to "local", reads will return the latest data a server has
#pod locally.
#pod
#pod Additional levels are storage engine specific.  See L<Read
#pod Concern|http://docs.mongodb.org/manual/search/?query=readConcern> in the MongoDB
#pod documentation for more details.
#pod
#pod This may be set in a connection string with the the C<readConcernLevel> option.
#pod
#pod =cut

has level => (
    is        => 'ro',
    isa       => Maybe [Str],
    predicate => 'has_level',
);

sub BUILD {
    my $self = shift;
    if ( defined $self->{level} ) {
        $self->{level} = lc $self->{level};
    }
}

# public interface for compatibility, but undocumented
sub as_args {
    my ( $self, $session ) = @_;

# if session is defined and operation_time is not, then either the
    # operation_time was not sent on the response from the server for this
    # session or the session has causal consistency disabled.
    if ( $self->{level} ) {
        return [
            readConcern => {
              level => $self->{level},
              ( defined $session && defined $session->operation_time
                ? ( afterClusterTime => $session->operation_time )
                : () ),
            }
        ];
    }
    else {
        return [
            ( defined $session && defined $session->operation_time
              ? ( readConcern => { afterClusterTime => $session->operation_time } )
              : ()
            )
        ];
    }
}

__END__

=pod

=encoding UTF-8

=head1 NAME

MongoDB::ReadConcern - Encapsulate and validate a read concern

=head1 VERSION

version v2.2.2

=head1 SYNOPSIS

$rc = MongoDB::ReadConcern->new(); # no defaults

$rc = MongoDB::ReadConcern->new(
        level    => 'local',
    );

=head1 DESCRIPTION

A Read Concern describes the constraints that MongoDB must satisfy when reading
data.  Read Concern was introduced in MongoDB 3.2.

=head1 ATTRIBUTES

=head2 level

The read concern level determines the consistency level required
of data being read.

The default level is C<undef>, which means the server will use its configured
default.

If the level is set to "local", reads will return the latest data a server has
locally.

Additional levels are storage engine specific.  See L<Read
Concern|http://docs.mongodb.org/manual/search/?query=readConcern> in the MongoDB
documentation for more details.

This may be set in a connection string with the the C<readConcernLevel> option.

=head1 AUTHORS

=over 4

=item *

David Golden <david@mongodb.com>

=item *

Rassi <rassi@mongodb.com>

=item *

Mike Friedman <friedo@friedo.com>

=item *

Kristina Chodorow <k.chodorow@gmail.com>

=item *

Florian Ragwitz <rafl@debian.org>

=back

=head1 COPYRIGHT AND LICENSE

This is free software, licensed under:

The Apache License, Version 2.0, January 2004

=cut

${this.title}

Code Editor : ReadConcern.pm