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Changelog

Source: NEWS.md

joinspy 0.8.0

CRAN release: 2026-03-31

Multi-Backend Join Support

  • Join wrappers (left_join_spy(), join_strict(), etc.) now auto-detect input class and dispatch to the native join engine: tibble inputs use dplyr, data.table inputs use data.table, plain data.frames use base R merge()
  • New backend parameter for explicit override ("base", "dplyr", "data.table")
  • Class preserved through the full diagnose-repair-join cycle
  • Graceful fallback to base R with a warning if the detected backend package is not installed

Documentation Overhaul

  • README reframed around string-level key diagnostics (whitespace, case, encoding, typos) as the primary value proposition
  • Three new vignettes: “Why Your Keys Don’t Match” (real-world scenarios), “Joins in Production” (pipelines, logging, guards), “Working with Backends” (tibble/data.table/base R)
  • Existing vignettes (quickstart, common-issues) expanded from 850 to 4,500+ prose words

Testing

  • 46 new backend tests covering auto-detection, explicit override, named by vectors, class preservation, and all three backends

joinspy 0.7.2

Testing & Quality

  • Improved test coverage from 65% to 94%
  • Added comprehensive tests for all exported and internal functions
  • Added .covrignore to exclude untestable Shiny addin from coverage calculation

joinspy 0.7.1

API Simplification

  • Removed plot_venn(): Use plot(report, file = "...") instead
  • Removed plot_summary(): Use summary(report, format = "markdown") instead
  • Enhanced plot(): Now accepts file, width, height, colors parameters
  • Enhanced summary(): Now accepts format parameter (“data.frame”, “text”, “markdown”)

CRAN Preparation

  • Added cph role and ORCID to DESCRIPTION
  • Added Language: en-US field
  • Quoted proper nouns in documentation

joinspy 0.7.0

Integration & Workflow

  • RStudio addin: addin_join_inspector() opens an interactive Shiny gadget for exploring join diagnostics
  • Logging & audit: log_report() writes reports to file (text/JSON/RDS format)
  • Automatic logging: set_log_file() / get_log_file() for session-wide logging configuration
  • Deferred access: last_report() retrieves diagnostics after silent joins
  • Silent mode: .quiet = TRUE parameter for all *_join_spy() wrappers

joinspy 0.6.0

Advanced Join Patterns

joinspy 0.5.0

Visualization

  • plot_venn(): Venn diagram of key overlap with PNG/SVG/PDF export
  • plot_summary(): Summary tables in text, markdown, or data.frame format
  • S3 integration: plot() method for JoinReport objects

joinspy 0.4.0

Performance & Scale

  • Sampling mode: join_spy(x, y, by, sample = 10000) for large datasets
  • Memory estimation: Predict join result size before execution
  • Reproducible sampling: Optional seed parameter for consistent results

joinspy 0.3.0

Auto-Repair

  • join_repair(): Automatically fix common key issues
    • Trim leading/trailing whitespace
    • Standardize case (to lower/upper)
    • Remove invisible characters
    • Convert empty strings to NA
  • suggest_repairs(): Generate R code snippets to fix detected issues
  • Dry-run mode: Preview changes without modifying data

joinspy 0.2.0

Enhanced Detection

Type & Format Issues

  • Type coercion warnings (character to factor, numeric-as-string to numeric)
  • Factor level mismatches between tables
  • Empty string vs NA distinction
  • Numeric precision warnings for floating-point keys

Near-Match Detection

  • Fuzzy match candidates (Levenshtein distance ≤ 2)
  • Suggested matches for unmatched keys
  • Configurable similarity threshold

Multi-Column Join Analysis

  • Per-column breakdown for composite keys
  • Problem column identification (lowest match rate)

joinspy 0.1.0

Initial release.

Core Functions

Issue Detection

  • Duplicate key detection with row locations
  • Whitespace detection (leading/trailing spaces)
  • Case mismatch detection
  • Encoding issue detection (UTF-8 vs Latin-1, invisible Unicode)
  • NA key detection
  • Cardinality analysis (1:1, 1:many, many:1, many:many)

S3 Methods

Documentation

  • Getting started vignette
  • Common issues troubleshooting guide