folone/poi.scala

Poi Scala is a functional Scala library that provides type-safe, immutable abstractions for manipulating Excel workbooks using Apache POI. It supports synchronous and asynchronous operations with streaming capabilities, and offers integrations with the Cats and Scalaz ecosystems for pure functional programming. The system focuses on performance and memory efficiency through comprehensive benchmarking and reactive stream support.

This release introduces a new \poi-scala-cats\ module that integrates the Apache POI library with the Cats ecosystem. It provides \IOOperations\ for wrapping workbook creation, saving, loading, and data processing in \cats.effect.IO\ for pure functional asynchronous programming. Additionally, it supplies Cats typeclass instances (\Eq\, \Show\, \Order\, \Semigroup\, and \Monoid\) for core POI data structures like \Cell\, \Row\, \Sheet\, and \Workbook\, enabling functional composition and law-based testing of these entities.

poi-scala-cats · high confidence

The poi-scala-async module now provides non-blocking Excel file operations via the AsyncOperations object. Users can create, save, and load workbooks asynchronously, process large datasets through streaming with batch support, and build workbooks progressively with configurable progress callbacks. The module also includes reactive stream support with backpressure handling for efficient memory usage during large data processing.

poi-scala-async · high confidence

The \poi-scala-core\ library now includes a comprehensive set of new source files defining the core domain model for Excel manipulation. This adds immutable case classes for \Cell\ types (String, Numeric, Date, Boolean, Blank, Error, Formula, and Styled), \Row\, \Sheet\, and \Workbook\, along with supporting types like \CellAddr\, \CellStyle\, and \CellRange\. It also introduces a new data validation subsystem with a fluent \DataValidationBuilder\, constraint types, and helper methods for dropdowns and ranges, as well as named range management and bulk operation utilities. These changes provide the foundational API for creating and styling Excel files, replacing or augmenting previous internal implementations with a more structured, type-safe approach.

poi-scala-core, poi-scala-scalaz · high confidence

The repository has been initialized with a complete project structure for the Poi Scala library, including a modular build system (core, cats, scalaz, async), a comprehensive Makefile for development workflows, and configuration files for code formatting (scalafmt), linting (scalastyle), and static analysis (scalafix). The setup also includes a custom sbt launcher, Replit environment configuration, and an Apache 2.0 license file, establishing the foundation for building and testing the Excel manipulation library.

(repo-wide) · high confidence

The legacy \Workbook\ class and its associated \Sheet\, \Row\, and \Cell\ data structures, which were tightly coupled to the Apache POI HSSF API for writing \.xls\ files, have been removed from the codebase. This deletion eliminates the previous implementation that manually mapped internal data structures to HSSF objects for file output.

src/main · high confidence

Added JMH benchmarks for async and comprehensive workbook operations; Removed obsolete PoiSpec test file.

The project has switched its build tool from Maven (pom.xml) to sbt (build.sbt), introducing a multi-module structure with core, scalaz, cats, async, and benchmark modules. This migration updates the Apache POI dependency from version 3.7 to 5.5.1, upgrades the Scala library to support versions 2.12.21, 2.13.18, and 3.9.0, and updates testing libraries including specs2-scalacheck to 4.23.0 and scalacheck to 1.20.0.

(dependencies) · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• First survey — no prior run to compare against. CAI 65.

• Code Health 98
• Architecture 100
• Maturity 63
• Readiness 70
• Security 56

• 300 commits — 289 feature/other, 11 fixes

• (root) — 146 commits
• project/build.properties — 55 commits
• .github/workflows — 36 commits
• project/plugins.sbt — 30 commits
• project/project — 10 commits
• src/test — 6 commits
• benchmarks/src — 5 commits
• (repo) — 4 commits
• src/main — 4 commits
• poi-scala-core/src — 2 commits
• .github/CODEOWNERS — 1 commit
• poi-scala-cats/src — 1 commit

• fix: Fix 2.13 compilation errors.
• fix: Fix benchmark upload path
• fix: Fix scala 3 test compilation
• fix: Fix the tests in scala 3
• fix: Fix up benchmark download
• fix: Fix up benchmark results
• fix: Hopefully final fix
• fix: Revert "Update sbt, scripted-plugin to 1.11.0" (#314)
• fix: Revert "Update sbt-ci-release to 1.11.0" (#313)
• fix: Try to fix the comment publishing workflow
• fix: fix credentials setting
• change: .
• change: .
• change: Add 'Reformat with scalafmt 3.8.2' to .git-blame-ignore-revs
• change: Add @xuwei-k to developers.
• change: Add back release on branch push
• change: Add telemetry
• change: Another quickfix
• change: Bump actions/checkout from 3 to 4
• change: Bump actions/checkout from 4 to 5 (#347)
• …and 280 more

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

folone/poi.scala was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.