ToolUp.DataSources.Parquet 0.20.0

Prefix Reserved
.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package ToolUp.DataSources.Parquet --version 0.20.0
                    


                    

                
NuGet\Install-Package ToolUp.DataSources.Parquet -Version 0.20.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="ToolUp.DataSources.Parquet" Version="0.20.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="ToolUp.DataSources.Parquet" Version="0.20.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="ToolUp.DataSources.Parquet" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add ToolUp.DataSources.Parquet --version 0.20.0
                    


                    

                
#r "nuget: ToolUp.DataSources.Parquet, 0.20.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package ToolUp.DataSources.Parquet@0.20.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=ToolUp.DataSources.Parquet&version=0.20.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=ToolUp.DataSources.Parquet&version=0.20.0
                    


                            Install as a Cake Tool

ToolUp.DataSources.Parquet

Parquet dataset codec for ToolUp.Platform — the companion implementation of the IDatasetCodec seam. Compose it and dataset vintages are stored as native Parquet: a DatasetContentRef tags Format = "parquet", and an external compute worker (Python, R, anything with a Parquet reader) parses the content blob directly, with no ToolUp code.

open ToolUp.Platform
open ToolUp.DataSources.Parquet

let datasets = BlobDatasetStore.createWithCodec dataObjects (ParquetDatasetCodec())

The default composition is unchanged without this package: BlobDatasetStore.create uses the BCL-only JsonFrameDatasetCodec (Format = "toolup-frame-v1"), so deployments that do not need native-Parquet handoff pay nothing.

Column mapping

Dataset dtype Parquet physical type
Float double
Int int64
Bool boolean
Text / Categorical UTF-8 string
Timestamp timestamp (microseconds, UTC-adjusted)

Nullability maps to Parquet optional columns. Text vs Categorical and the column roles (PanelUnit / PanelPeriod / Target) are not representable in the Parquet physical schema, so the full declared DatasetSchema travels in the file's custom key/value metadata under toolup.dataset.schema. Decode verifies the physical schema against the declared one and refuses on any mismatch. A plain Parquet reader ignores the metadata and still reads every column natively.

Precision contract

  • Timestamps round-trip as UTC instants at microsecond precision: the original offset is not preserved (the same instant re-reads at offset zero — DateTimeOffset equality, which compares instants, is preserved), and sub-microsecond ticks truncate.
  • All other dtypes round-trip exactly.

Dependencies

Parquet.Net (Apache-2.0), fully managed. This vendor dependency never reaches ToolUp.Platform.* — it is isolated in this companion behind the codec seam.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.23.0 85 9/23/2026
0.22.0 107 8/27/2026
0.21.0 125 8/26/2026
0.20.1 111 8/20/2026
0.20.0 137 8/19/2026