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MongoDB(3pm) User Contributed Perl Documentation MongoDB(3pm)
NAME
MongoDB - Official MongoDB Driver for Perl (EOL)
VERSION
version v2.2.2
END OF LIFE NOTICE
Version v2.2.0 was the final feature release of the MongoDB Perl driver and version v2.2.2
is the final patch release.
As of August 13, 2020, the MongoDB Perl driver and related libraries have reached end of
life and are no longer supported by MongoDB. See the August 2019 deprecation notice
<https://www.mongodb.com/blog/post/the-mongodb-perl-driver-is-being-deprecated> for
rationale.
If members of the community wish to continue development, they are welcome to fork the
code under the terms of the Apache 2 license and release it under a new namespace.
Specifications and test files for MongoDB drivers and libraries are published in an open
repository: mongodb/specifications
<https://github.com/mongodb/specifications/tree/master/source>.
SYNOPSIS
use MongoDB;
my $client = MongoDB->connect('mongodb://localhost');
my $collection = $client->ns('foo.bar'); # database foo, collection bar
my $result = $collection->insert_one({ some => 'data' });
my $data = $collection->find_one({ _id => $result->inserted_id });
DESCRIPTION
This is the official Perl driver for MongoDB <http://www.mongodb.com>. MongoDB is an
open-source document database that provides high performance, high availability, and easy
scalability.
A MongoDB server (or multi-server deployment) hosts a number of databases. A database
holds a set of collections. A collection holds a set of documents. A document is a set of
key-value pairs. Documents have dynamic schema. Using dynamic schema means that documents
in the same collection do not need to have the same set of fields or structure, and common
fields in a collection's documents may hold different types of data.
Here are some resources for learning more about MongoDB:
o MongoDB Manual <http://docs.mongodb.org/manual/contents/>
o MongoDB CRUD Introduction <http://docs.mongodb.org/manual/core/crud-introduction/>
o MongoDB Data Modeling Introductions <http://docs.mongodb.org/manual/core/data-
modeling-introduction/>
To get started with the Perl driver, see these pages:
o MongoDB Perl Driver Tutorial
o MongoDB Perl Driver Examples
Extensive documentation and support resources are available via the MongoDB community
website <http://www.mongodb.org/>.
USAGE
The MongoDB driver is organized into a set of classes representing different levels of
abstraction and functionality.
As a user, you first create and configure a MongoDB::MongoClient object to connect to a
MongoDB deployment. From that client object, you can get a MongoDB::Database object for
interacting with a specific database.
From a database object, you can get a MongoDB::Collection object for CRUD operations on
that specific collection, or a MongoDB::GridFSBucket object for working with an abstract
file system hosted on the database. Each of those classes may return other objects for
specific features or functions.
See the documentation of those classes for more details or the MongoDB Perl Driver
Tutorial for an example.
MongoDB::ClientSession objects are generated from a MongoDB::MongoClient and allow for
advanced consistency options, like causal-consistency and transactions.
Error handling
Unless otherwise documented, errors result in fatal exceptions. See MongoDB::Error for a
list of exception classes and error code constants.
METHODS
connect
$client = MongoDB->connect(); # localhost, port 27107
$client = MongoDB->connect($host_uri);
$client = MongoDB->connect($host_uri, $options);
This function returns a MongoDB::MongoClient object. The first parameter is used as the
"host" argument and must be a host name or connection string URI. The second argument is
optional. If provided, it must be a hash reference of constructor arguments for
MongoDB::MongoClient::new.
If an error occurs, a MongoDB::Error object will be thrown.
NOTE: To connect to a replica set, a replica set name must be provided. For example, if
the set name is "setA":
$client = MongoDB->connect("mongodb://example.com/?replicaSet=setA");
SUPPORTED MONGODB VERSIONS
The driver has been tested against MongoDB versions 2.6 through 4.2. All features of
these versions are supported, except for field-level encryption. The driver may work with
future versions of MongoDB, but will not include support for new MongoDB features and
should be thoroughly tested within applications before deployment.
SEMANTIC VERSIONING SCHEME
Starting with MongoDB "v1.0.0", the driver reverts to the more familiar three-part
version-tuple numbering scheme used by both Perl and MongoDB: "vX.Y.Z"
o "X" will be incremented for incompatible API changes.
o Even-value increments of "Y" indicate stable releases with new functionality. "Z"
will be incremented for bug fixes.
o Odd-value increments of "Y" indicate unstable ("development") releases that should not
be used in production. "Z" increments have no semantic meaning; they indicate only
successive development releases.
See the Changes file included with releases for an indication of the nature of changes
involved.
ENVIRONMENT VARIABLES
If the "PERL_MONGO_WITH_ASSERTS" environment variable is true before the MongoDB module is
loaded, then its various classes will be generated with internal type assertions enabled.
This has a severe performance cost and is not recommended for production use. It may be
useful in diagnosing bugs.
If the "PERL_MONGO_NO_DEP_WARNINGS" environment variable is true, then deprecated methods
will not issue warnings when used. (Normally, a deprecation warning is issued once per
call-site for deprecated methods.)
THREADS
Per threads documentation, use of Perl threads is discouraged by the maintainers of Perl
and the MongoDB Perl driver does not test or provide support for use with threads.
AUTHORS
o David Golden <david AT mongodb.com>
o Rassi <rassi AT mongodb.com>
o Mike Friedman <friedo AT friedo.com>
o Kristina Chodorow <k.chodorow AT gmail.com>
o Florian Ragwitz <rafl AT debian.org>
CONTRIBUTORS
o Andrew Page <andrew AT infosiftr.com>
o Andrey Khozov <avkhozov AT gmail.com>
o Ashley Willis <ashleyw AT cpan.org>
o Ask Bjorn Hansen <ask AT develooper.com>
o Bernard Gorman <bernard.gorman AT mongodb.com>
o Brendan W. McAdams <brendan AT mongodb.com>
o Brian Moss <kallimachos AT gmail.com>
o Casey Rojas <casey.j.rojas AT gmail.com>
o Christian Hansen <chansen AT cpan.org>
o Christian Sturm <kind AT gmx.at>
o Christian Walde <walde.christian AT googlemail.com>
o Colin Cyr <ccyr AT sailingyyc.com>
o Danny Raetzsch <danny AT paperskymedia.com>
o David Morrison <dmorrison AT venda.com>
o David Nadle <david AT nadle.com>
o David Steinbrunner <dsteinbrunner AT pobox.com>
o David Storch <david.storch AT mongodb.com>
o diegok <diego AT freekeylabs.com>
o D. Ilmari Mannsaker <ilmari.mannsaker AT net-a-porter.com>
o Eric Daniels <eric.daniels AT mongodb.com>
o Finn Kempers (Shadowcat Systems Ltd) <toyou1995 AT gmail.com>
o Gerard Goossen <gerard AT ggoossen.net>
o Glenn Fowler <cebjyre AT cpan.org>
o Graham Barr <gbarr AT pobox.com>
o Hao Wu <echowuhao AT gmail.com>
o Harish Upadhyayula <hupadhyayula AT dealersocket.com>
o Jason Carey <jason.carey AT mongodb.com>
o Jason Toffaletti <jason AT topsy.com>
o Johann Rolschewski <rolschewski AT gmail.com>
o John A. Kunze <jak AT ucop.edu>
o Joseph Harnish <bigjoe1008 AT gmail.com>
o Josh Matthews <joshua.matthews AT mongodb.com>
o Joshua Juran <jjuran AT metamage.com>
o J. Stewart <jstewart AT langley.theshire>
o Kamil Slowikowski <kslowikowski AT gmail.com>
o Ken Williams <kwilliams AT cpan.org>
o Matthew Shopsin <matt.shopsin AT mongodb.com>
o Matt S Trout <mst AT shadowcat.uk>
o Michael Langner <langner AT fch.de>
o Michael Rotmanov <rotmanov AT sipgate.de>
o Mike Dirolf <mike AT mongodb.com>
o Mohammad S Anwar <mohammad.anwar AT yahoo.com>
o Nickola Trupcheff <n.trupcheff AT gmail.com>
o Nigel Gregoire <nigelg AT airg.com>
o Niko Tyni <ntyni AT debian.org>
o Nuno Carvalho <mestre.smash AT gmail.com>
o Orlando Vazquez <ovazquez AT gmail.com>
o Othello Maurer <omaurer AT venda.com>
o Pan Fan <nightsailer AT gmail.com>
o Pavel Denisov <pavel.a.denisov AT gmail.com>
o Rahul Dhodapkar <rahul AT mongodb.com>
o Robert Sedlacek (Shadowcat Systems Ltd) <phaylon AT cpan.org>
o Robin Lee <cheeselee AT fedoraproject.org>
o Roman Yerin <kid AT cpan.org>
o Ronald J Kimball <rkimball AT pangeamedia.com>
o Ryan Chipman <ryan AT ryanchipman.com>
o Slaven Rezic <slaven.rezic AT idealo.de>
o Slaven Rezic <srezic AT cpan.org>
o Stephen Oberholtzer <stevie AT qrpff.net>
o Steve Sanbeg <stevesanbeg AT buzzfeed.com>
o Stuart Watt <stuart AT morungos.com>
o Thomas Bloor (Shadowcat Systems Ltd) <tbsliver AT cpan.org>
o Tobias Leich <email AT froggs.de>
o Uwe Voelker <uwe.voelker AT xing.com>
o Wallace Reis <wallace AT reis.me>
o Wan Bachtiar <sindbach AT gmail.com>
o Whitney Jackson <whjackson AT gmail.com>
o Xavier Guimard <x.guimard AT free.fr>
o Xtreak <tirkarthi AT users.com>
o Zhihong Zhang <zzh_621 AT yahoo.com>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2020 by MongoDB, Inc.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004
perl v5.30.3 2020-08-15 MongoDB(3pm)
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Under GNU General Public License
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