phpman > perldoc > MongoDB::BulkWrite

NAME
    MongoDB::BulkWrite - MongoDB bulk write interface

VERSION
    version v2.2.2

SYNOPSIS
        use Safe::Isa;
        use Try::Tiny;

        my $bulk = $collection->initialize_ordered_bulk_op;

        $bulk->insert_one( $doc );
        $bulk->find( $query )->upsert->replace_one( $doc )
        $bulk->find( $query )->update( $modification )

        my $result = try {
            $bulk->execute;
        }
        catch {
            if ( $_->$isa("MongoDB::WriteConcernError") ) {
                warn "Write concern failed";
            }
            else {
                die $_;
            }
        };

DESCRIPTION
    This class constructs a list of write operations to perform in bulk for a single collection. On
    a MongoDB 2.6 or later server with write command support this allow grouping similar operations
    together for transit to the database, minimizing network round-trips.

    To begin a bulk operation, use one these methods from MongoDB::Collection:

    *   initialize_ordered_bulk_op

    *   initialize_unordered_bulk_op

  Ordered Operations
    With an ordered operations list, MongoDB executes the write operations in the list serially. If
    an error occurs during the processing of one of the write operations, MongoDB will return
    without processing any remaining write operations in the list.

  Unordered Operations
    With an unordered operations list, MongoDB can execute in parallel, as well as in a
    nondeterministic order, the write operations in the list. If an error occurs during the
    processing of one of the write operations, MongoDB will continue to process remaining write
    operations in the list.

ATTRIBUTES
  collection (required)
    The MongoDB::Collection where the operations are to be performed.

  ordered (required)
    A boolean for whether or not operations should be ordered (true) or unordered (false).

  bypassDocumentValidation
    A boolean for whether or not operations should bypass document validation. Default is false.

METHODS
  find
        $view = $bulk->find( $query_document );

    The "find" method returns a MongoDB::BulkWriteView object that allows write operations like
    "update" or "remove", constrained by a query document.

    A query document is required. Use an empty hashref for no criteria:

        $bulk->find( {} )->remove; # remove all documents!

    An exception will be thrown on error.

  insert_one
        $bulk->insert_one( $doc );

    Queues a document for insertion when "execute" is called. The document may be a hash reference,
    an array reference (with balanced key/value pairs) or a Tie::IxHash object. If the document does
    not have an "_id" field, one will be added to the original.

    The method has an empty return on success; an exception will be thrown on error.

  execute
        my $result = $bulk->execute;
        # Optional write concern:
        my $result = $bulk->execute( $concern );
        # With options
        my $result = $bulk->execute( $concern, $options );

    Executes the queued operations. The order and semantics depend on whether the bulk object is
    ordered or unordered:

    *   ordered — operations are executed in order, but operations of the same type (e.g. multiple
        inserts) may be grouped together and sent to the server. If the server returns an error, the
        bulk operation will stop and an error will be thrown.

    *   unordered — operations are grouped by type and sent to the server in an unpredictable order.
        After all operations are sent, if any errors occurred, an error will be thrown.

    When grouping operations of a type, operations will be sent to the server in batches not
    exceeding 16MiB or 1000 items (for a version 2.6 or later server) or individually (for legacy
    servers without write command support).

    A write concern is optional, and can either take a pre-constructed WriteConcern object, or the
    arguments to construct one. For information on write concerns, see MongoDB::WriteConcern.

    The options argument is an optional hashref which can contain the following values:

    *   "session" - the session to use for these operations. If not supplied, will use an implicit
        session. For more information see MongoDB::ClientSession

    This method returns a MongoDB::BulkWriteResult object if the bulk operation executes
    successfully.

    Typical errors might include:

    *   "MongoDB::WriteError" — one or more write operations failed

    *   "MongoDB::WriteConcernError" - all writes were accepted by a primary, but the write concern
        failed

    *   "MongoDB::DatabaseError" — a command to the database failed entirely

    See MongoDB::Error for more on error handling.

    NOTE: it is an error to call "execute" without any operations or to call "execute" more than
    once on the same bulk object.

AUTHORS
    *   David Golden <david AT mongodb.com>

    *   Rassi <rassi AT mongodb.com>

    *   Mike Friedman <friedo AT friedo.com>

    *   Kristina Chodorow <k.chodorow AT gmail.com>

    *   Florian Ragwitz <rafl AT debian.org>

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