R Observatory: Metrics for mdbplyr version 0.4.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mdbplyr

0.4.1Package record

A Native Lazy Analytical Backend for MongoDB

0packages depend

1.9Kdownloads / year

84.7%test coverage

13/13flavors OK

Overview

About

Maintained by Paolo BosettiCRAN page ↗

Provides a disciplined, lazy subset of 'dplyr' semantics for MongoDB aggregation pipelines. Queries remain lazy until collect() and compile into MongoDB-native aggregation stages.

Changes in 0.4.1

This is a bug-fix release. All four issues were found by running mdbplyr

against a live MongoDB server rather than only against mocked collections, and

each is covered by a new regression test.

Bug fixes

Fixed filter() with multiple predicates (e.g. filter(cond1, cond2)) compiling $and as a JSON object with numeric-string keys instead of an array, which MongoDB silently treated as a no-op filter.
Fixed is.na() compiling to a bare $eq against null, which does not match a genuinely missing field under MongoDB's $expr semantics; it now compiles through $ifNull first.
Fixed comparisons (<, <=, >, >=, !=), !, and if_else() matching rows with a missing operand, because BSON sort order places missing/null below every number. Comparisons involving a field now compile with an NA-propagation guard so they drop or return NA for missing values the same way dplyr does.

Show all changes in 0.4.1Hide the rest of the changes in 0.4.1

Fixed unwind_array() and flatten_fields() rejecting a nested array root (e.g. message.measurements) that infer_schema() only ever registers through its scalar leaves (message.measurements.Fx and so on). Both now resolve such paths directly, matching select()'s existing support for nested root paths.

From NEWS.md in the release

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("mdbplyr", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-mdbplyr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-mdbplyr

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-mdbplyr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.2 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK6 OK2026-04-23

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.4.1

READMENoVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 0.4.1Citation fileYes · software entry onlyWebsitenot declared in DESCRIPTION

Help pages: 23 (1 internal)includes a package overview page
Examples that run: 100%19 run in a plain check
Exported functions with examples: 86%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (1)

Using mdbplyr HTML

How these are measured

Downloads

1.9K

CRAN downloads in the past year

Rank #19,909 · ~5/day · ~161/mo

Releases R versions

Daily download trend is not available in this view yet.

24130 days

65290 days

1.9K1 year

Compare downloads with other packages →

Also on65 r2u6 autocran

How downloads are counted

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Installing mdbplyr adds 16 packages (10 with compiled code, 6.2 MB of source tarballs). Heaviest: jsonlite 1.0 MB, vctrs 1.0 MB, dplyr 902 KB.

Depends (1)

R >= 4.2.0

Imports (6)

cli dplyr jsonlite rlang tibble tidyselect

LinkingTo (0)

none

Suggests (4)

knitr mongolite rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (1)

Paolo Bosetti

Author, Maintainer since 0.3.0 (2026)

Releases (3)

Pick two releases to compare their code metrics.

0.4.1Latest
record
2026-07-10 · current release · diff ↗
0.4.0
record
2026-06-25 · diff ↗ ·
added 5 exports
anti_join.tbl_mongo, inner_join.tbl_mongo, left_join.tbl_mongo, mongo_server_version, semi_join.tbl_mongo
R
R 4.6.0 released · 2026-04-24
0.3.0
record
2026-04-22
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-04-22
Total releases: 3 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.2.0
Download size: 82 KB

Appears in task views

Databases with R

Cite

Cite this package

Run in R for the authors' entry:

citation("mdbplyr")

The package provides a citation file, so citation() returns the authors' own entry.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for mdbplyr version 0.4.1 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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