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Improve type of Collection Bulk Write operations#1694

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GromNaN merged 1 commit intomongodb:v2.xfrom
GromNaN:bulk-types
Feb 4, 2026
Merged

Improve type of Collection Bulk Write operations#1694
GromNaN merged 1 commit intomongodb:v2.xfrom
GromNaN:bulk-types

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@GromNaN GromNaN commented May 20, 2025

The Collection::bulkWrite($operations) method requires a complex array structure for the operations list. Describing this type using psalm custom type feature to helps static analysis.

PHPStorm is able to make the completion only with the full @param annotation, not @phpstan-param nor @psaml-param. And only when I start typing the first letter.
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Both Psalm and PHPStan detect when the argument is invalid. The PHPStorm inspection does not detect issues when the array does not match the expected @param type.

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@GromNaN GromNaN requested a review from a team as a code owner May 20, 2025 11:47
@GromNaN GromNaN requested a review from alcaeus May 20, 2025 11:47
Comment thread src/Operation/BulkWrite.php Fixed
// instance, there is no need to re-validate the returned value here.
if ($codec) {
$operations[$i][$type][0] = $codec->encode($args[0]);
$operation[$type][0] = $codec->encode($args[0]);

Check notice

Code scanning / Psalm

PossiblyInvalidArgument Note

Argument 1 of MongoDB\Codec\DocumentCodec::encode expects object, but possibly different type array<array-key, mixed>|null|object provided
case self::DELETE_MANY:
case self::DELETE_ONE:
$operations[$i][$type][0] = $builderEncoder->encodeIfSupported($args[0]);
$operation[$type][0] = $builderEncoder->encodeIfSupported($args[0]);

Check notice

Code scanning / Psalm

MixedAssignment Note

Unable to determine the type of this assignment

case self::REPLACE_ONE:
$operations[$i][$type][0] = $builderEncoder->encodeIfSupported($args[0]);
$operation[$type][0] = $builderEncoder->encodeIfSupported($args[0]);

Check notice

Code scanning / Psalm

MixedAssignment Note

Unable to determine the type of this assignment

if ($codec) {
$operations[$i][$type][1] = $codec->encode($args[1]);
$operation[$type][1] = $codec->encode($args[1]);

Check notice

Code scanning / Psalm

PossiblyInvalidArgument Note

Argument 1 of MongoDB\Codec\DocumentCodec::encode expects object, but possibly different type array<array-key, mixed>|null|object provided
case self::UPDATE_MANY:
case self::UPDATE_ONE:
$operations[$i][$type][0] = $builderEncoder->encodeIfSupported($args[0]);
$operation[$type][0] = $builderEncoder->encodeIfSupported($args[0]);

Check notice

Code scanning / Psalm

MixedAssignment Note

Unable to determine the type of this assignment
}

$operations[$i][$type][1] = $args[1] = $builderEncoder->encodeIfSupported($args[1]);
$operation[$type][1] = $args[1] = $builderEncoder->encodeIfSupported($args[1]);

Check notice

Code scanning / Psalm

MixedAssignment Note

Unable to determine the type of this assignment
}

$operations[$i][$type][1] = $args[1] = $builderEncoder->encodeIfSupported($args[1]);
$operation[$type][1] = $args[1] = $builderEncoder->encodeIfSupported($args[1]);

Check notice

Code scanning / Psalm

MixedAssignment Note

Unable to determine the type of this assignment
* @see \MongoDB\Collection::bulkWrite()
*
* @psalm-type Document = object|array
* @psalm-type OperationType = array{deleteMany: array{0: Document, 1?: array}}|array{deleteOne: array{0: Document, 1?: array}}|array{insertOne: array{0: Document}}|array{replaceOne: array{0: Document, 1: Document, 2?: array}}|array{updateMany: array{0: Document, 1: Document, 2?: array}}|array{updateOne: array{0: Document, 1: Document, 2?: array}}
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Per our conversation yesterday, I think we still need confirmation on whether this can be utilized by the IDE. If not, is this worth adding at all?

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Looking at the baseline, it definitely improves the psalm analysis.

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PHPStorm has supports autocompletion of array keys thanks to the generic @param annotation on Collection::bulkWrite. The psalm annotation is here to improve static analysis.

Copilot AI review requested due to automatic review settings August 27, 2025 09:31
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Pull Request Overview

This PR improves type safety for MongoDB Collection bulk write operations by introducing a custom Psalm type definition for the complex array structure required by the bulkWrite() method. The change adds static analysis support to help catch type-related issues at development time.

  • Introduces a detailed OperationType custom type that describes all supported bulk write operation formats
  • Updates method signatures to use the new type annotations for better static analysis
  • Refactors the validation loop to use references instead of array indexing for improved performance
  • Adds a test case for empty operation validation

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File Description
src/Operation/BulkWrite.php Defines the OperationType custom type and updates method signatures and validation logic
src/Collection.php Imports and uses the OperationType in the bulkWrite method signature
tests/Operation/BulkWriteTest.php Adds test coverage for empty operation validation
psalm-baseline.xml Updates baseline to reflect improved type analysis with fewer mixed type issues
Comments suppressed due to low confidence (1)

src/Operation/BulkWrite.php:1

  • The Document type is defined twice (lines 49 and 51). Remove the duplicate definition to avoid confusion and maintain clean code.
<?php

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Comment thread src/Collection.php Outdated
@alcaeus alcaeus removed their request for review September 19, 2025 12:22
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alcaeus commented Sep 19, 2025

FWIW, I think this is a good intermediate step until we provide a better solution (e.g. by allowing to pass a MongoDB\BulkWrite instance to Collection::bulkWrite.

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codecov-commenter commented Feb 4, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.91%. Comparing base (7cb5b1e) to head (c89e245).
⚠️ Report is 6 commits behind head on v2.x.
✅ All tests successful. No failed tests found.

Additional details and impacted files
@@             Coverage Diff              @@
##               v2.x    #1694      +/-   ##
============================================
+ Coverage     87.80%   87.91%   +0.11%     
+ Complexity     3209     3208       -1     
============================================
  Files           428      428              
  Lines          6402     6390      -12     
============================================
- Hits           5621     5618       -3     
+ Misses          781      772       -9     
Flag Coverage Δ
6.0-replica_set 86.71% <100.00%> (+0.11%) ⬆️
6.0-server 82.76% <100.00%> (+0.10%) ⬆️
6.0-sharded_cluster 86.49% <100.00%> (+0.11%) ⬆️
8.0-replica_set 87.77% <100.00%> (+0.11%) ⬆️
8.0-server 83.53% <100.00%> (+0.10%) ⬆️
8.0-sharded_cluster 87.60% <100.00%> (+0.11%) ⬆️

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@GromNaN GromNaN enabled auto-merge (squash) February 4, 2026 17:26
@GromNaN GromNaN merged commit 0ca802a into mongodb:v2.x Feb 4, 2026
33 checks passed
@GromNaN GromNaN deleted the bulk-types branch February 5, 2026 14:59
alcaeus added a commit that referenced this pull request Mar 10, 2026
* v2.2: (138 commits)
  Improve flakey index version test (#1844)
  Require ext-mongodb 2.2 (#1840)
  Bump tests/specifications from `9e2acc6` to `bb9dddd` (#1842)
  Bump tests/drivers-evergreen-tools from `c7ec372` to `bd10517` (#1843)
  Improve type of Collection Bulk Write operations (#1694)
  Fix atlas search exception support detection for MongoDB 5 shared cluster (#1836)
  Skip CRUD prose test 13 with ext-mongodb 2.2+ (#1838)
  PHPLIB-1647: Add Database::getGridFSBucket (#1835)
  Bump tests/specifications from `08d7132` to `9e2acc6` (#1830)
  PHPLIB-1698: Remove reference to test-atlas-data-lake task (#1834)
  PHPLIB-1770 The unknown command name is not quoted in 5.0.32-enterprise (#1829)
  Bump tests/specifications from `28fdaf9` to `08d7132` (#1828)
  Bump tests/drivers-evergreen-tools from `5514d6a` to `c7ec372` (#1827)
  PHPLIB-1752 Upgrade to psalm 6.14 (#1814)
  Support encrypted colls in FunctionalTestCase::createCollection (#1820)
  Bump tests/drivers-evergreen-tools from `61cb4e9` to `5514d6a` (#1823)
  Bump tests/specifications from `192976b` to `28fdaf9` (#1824)
  PHPLIB-1736: Add `$scoreFusion` stage (#1822)
  Bump tests/drivers-evergreen-tools from `514927f` to `61cb4e9` (#1818)
  PHPLIB-1689 Make the Atlas Search exception more specific (#1794)
  ...
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6 participants