# phpman > man > MongoDB::BulkWriteResult(3pm)

## NAME
    [MongoDB::BulkWriteResult](https://www.chedong.com/phpMan.php/perldoc/MongoDB%3A%3ABulkWriteResult/markdown) - MongoDB bulk write result document

## VERSION
    version v2.2.2

## SYNOPSIS
        # returned directly
        my $result = $bulk->execute;

        # from a WriteError or WriteConcernError
        my $result = $error->result;

        if ( $result->acknowledged ) {
            ...
        }

## DESCRIPTION
    This class encapsulates the results from a bulk write operation. It may be returned directly
    from "execute" or it may be in the "result" attribute of a "[MongoDB::DatabaseError](https://www.chedong.com/phpMan.php/perldoc/MongoDB%3A%3ADatabaseError/markdown)" subclass
    like "[MongoDB::WriteError](https://www.chedong.com/phpMan.php/perldoc/MongoDB%3A%3AWriteError/markdown)" or "[MongoDB::WriteConcernError](https://www.chedong.com/phpMan.php/perldoc/MongoDB%3A%3AWriteConcernError/markdown)".

## ATTRIBUTES
  inserted_count
    Number of documents inserted

  upserted_count
    Number of documents upserted

  matched_count
    Number of documents matched for an update or replace operation.

  deleted_count
    Number of documents removed

  modified_count
    Number of documents actually modified by an update operation. This is not necessarily the same
    as "matched_count" if the document was not actually modified as a result of the update.

    This field is not available from legacy servers before version 2.6. If results are seen from a
    legacy server (or from a mongos proxying for a legacy server) this attribute will be "undef".

    You can call "has_modified_count" to find out if this attribute is defined or not.

  upserted
    An array reference containing information about upserted documents (if any). Each document will
    have the following fields:

    *   index — 0-based index indicating which operation failed

    *   _id — the object ID of the upserted document

  upserted_ids
    A hash reference built lazily from "upserted" mapping indexes to object IDs.

  inserted
    An array reference containing information about inserted documents (if any). Documents are just
    as in "upserted".

  inserted_ids
    A hash reference built lazily from "inserted" mapping indexes to object IDs.

  write_errors
    An array reference containing write errors (if any). Each error document will have the following
    fields:

    *   index — 0-based index indicating which operation failed

    *   code — numeric error code

    *   errmsg — textual error string

    *   op — a representation of the actual operation sent to the server

  write_concern_errors
    An array reference containing write concern errors (if any). Each error document will have the
    following fields:

    *   index — 0-based index indicating which operation failed

    *   code — numeric error code

  op_count
    The number of operations sent to the database.

  batch_count
    The number of database commands issued to the server. This will be less than the "op_count" if
    multiple operations were grouped together.

## METHODS
  assert
    Throws an error if write errors or write concern errors occurred.

  assert_no_write_error
    Throws a [MongoDB::WriteError](https://www.chedong.com/phpMan.php/perldoc/MongoDB%3A%3AWriteError/markdown) if "count_write_errors" is non-zero; otherwise returns 1.

  assert_no_write_concern_error
    Throws a [MongoDB::WriteConcernError](https://www.chedong.com/phpMan.php/perldoc/MongoDB%3A%3AWriteConcernError/markdown) if "count_write_concern_errors" is non-zero; otherwise
    returns 1.

  count_write_errors
    Returns the number of write errors

  count_write_concern_errors
    Returns the number of write errors

  last_code
    Returns the last "code" field from either the list of "write_errors" or "write_concern_errors"
    or 0 if there are no errors.

  last_errmsg
    Returns the last "errmsg" field from either the list of "write_errors" or "write_concern_errors"
    or the empty string if there are no errors.

  last_wtimeout
    True if a write concern timed out or false otherwise.

## AUTHORS
    *   David Golden <<david@mongodb.com>>

    *   Rassi <<rassi@mongodb.com>>

    *   Mike Friedman <<friedo@friedo.com>>

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

    *   Florian Ragwitz <<rafl@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