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https://github.com/khellang/efcore.sqlite.nodatime

Adds support for NodaTime types when using SQLite with Entity Framework Core.
https://github.com/khellang/efcore.sqlite.nodatime

c-sharp database dotnet dotnet-core entity-framework nodatime nodatime-types orm sqlite

Last synced: about 2 hours ago
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Adds support for NodaTime types when using SQLite with Entity Framework Core.

Host: GitHub
URL: https://github.com/khellang/efcore.sqlite.nodatime
Owner: khellang
License: mit
Created: 2020-12-16T18:56:57.000Z (almost 4 years ago)
Default Branch: master
Last Pushed: 2023-12-05T14:56:42.000Z (12 months ago)
Last Synced: 2023-12-05T15:31:42.244Z (12 months ago)
Topics: c-sharp, database, dotnet, dotnet-core, entity-framework, nodatime, nodatime-types, orm, sqlite
Language: C#
Homepage:
Size: 147 KB
Stars: 28
Watchers: 2
Forks: 8
Open Issues: 1
Metadata Files:
- Readme: README.md
- License: LICENSE.md

Awesome Lists containing this project

README

        # EFCore.Sqlite.NodaTime

![Build](https://github.com/khellang/EFCore.Sqlite.NodaTime/workflows/Build/badge.svg)

Adds support for [NodaTime](https://github.com/nodatime/nodatime) types when using [SQLite](https://sqlite.org/) with [Entity Framework Core](https://github.com/dotnet/efcore).

## Installation

[![NuGet](https://img.shields.io/nuget/v/EntityFrameworkCore.Sqlite.NodaTime)](https://www.nuget.org/packages/EntityFrameworkCore.Sqlite.NodaTime)

Install the latest package from [NuGet](https://www.nuget.org/packages/EntityFrameworkCore.Sqlite.NodaTime).

## Getting Started

If you're using Entity Framework Core without Dependency Injection, you can call `UseNodaTime` inside the `OnConfiguring` method in your `DbContext` class:

```csharp

public class MyDbContext : DbContext

{

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)

    {

        optionsBuilder.UseSqlite("", x => x.UseNodaTime());

    }

}

```

Otherwise, you should call `UseNodaTime` when adding the `DbContext` to your service collection:

```csharp

public class Startup

{

    public void ConfigureServices(IServiceCollection services)

    {

        services.AddDbContext(options =>

            options.UseSqlite("", x => x.UseNodaTime()));

    }

}

```

And that's it. You can now use NodaTime types in your entities and perform server-side queries on them! :sparkles:

## Supported Types

The following NodaTime types are currently supported:

| NodaTime Type | SQLite Type | SQLite Format |

|---------------|-------------|---------------|

| `Instant` | `TEXT` | `YYYY-MM-DD HH:MM:SS.SSS` |

| `LocalDateTime` | `TEXT` | `YYYY-MM-DD HH:MM:SS.SSS` |

| `LocalDate` | `TEXT` | `YYYY-MM-DD` |

| `LocalTime` | `TEXT` | `HH:MM:SS.SSS` |

# Supported Properties

| NodaTime Property | Generated SQL | Notes |

|-------------------|--------------|-------|

| `Year` | `strftime('%Y', )` | The value is cast to `INTEGER` for comparison. |

| `Month` | `strftime('%m', )` | The value is cast to `INTEGER` for comparison. |

| `Day` | `strftime('%d', )` | The value is cast to `INTEGER` for comparison. |

| `Hour` | `strftime('%H', )` | The value is cast to `INTEGER` for comparison. |

| `Minute` | `strftime('%M', )` | The value is cast to `INTEGER` for comparison. |

| `Second` | `strftime('%S', )` | The value is cast to `INTEGER` for comparison. |

| `DayOfYear` | `strftime('%j', )` | The value is cast to `INTEGER` for comparison.|

| `DayOfWeek` | `strftime('%w', )` | The value is cast to `INTEGER` for comparison. As NodaTime's `IsoDayOfWeek` enum doesn't match SQLite's day of week, additional SQL is emitted to convert `Sunday` to the correct value. |

| `Date` | `date()` | |

| `TimeOfDay` | `strftime('%H:%M:%f', )` | In order to support fractional seconds to fully roundtrip `LocalTime`, a custom format string is used instead of using `time()`. |

## Supported Methods

| NodaTime Method | Generated SQL |

|-----------------|---------------|

| `SystemClock.Instance.GetCurrentInstant()` | `strftime('%Y-%m-%d %H:%M:%f', 'now')` |

| `LocalDate.PlusYears` | `date(, '+n years')` |

| `LocalDate.PlusMonths` | `date(, '+n months')` |

| `LocalDate.PlusWeeks` | `date(, '+n*7 days')` |

| `LocalDate.PlusDays` | `date(, '+n days')` |

| `LocalDate.ToDateOnly` | `date()` |

| `LocalDate.ToDateTimeUnspecified` | `date()` |

| `LocalTime.PlusHours` | `strftime('%H:%M:%f', , '+n hours')` |

| `LocalTime.PlusMinutes` | `strftime('%H:%M:%f', , '+n minutes')` |

| `LocalTime.PlusSeconds` | `strftime('%H:%M:%f', , '+n seconds')` |

| `LocalTime.PlusMilliseconds` | `strftime('%H:%M:%f', , '+0.n seconds')` |

| `LocalTime.ToTimeOnly` | `strftime('%H:%M:%f', )` |

| `LocalDateTime.PlusYears` | `strftime('%Y-%m-%d %H:%M:%f',, '+n years')` |

| `LocalDateTime.PlusMonths` | `strftime('%Y-%m-%d %H:%M:%f',, '+n months')` |

| `LocalDateTime.PlusWeeks` | `strftime('%Y-%m-%d %H:%M:%f',, '+n*7 days')` |

| `LocalDateTime.PlusDays` | `strftime('%Y-%m-%d %H:%M:%f',, '+n days')` |

| `LocalDateTime.PlusHours` | `strftime('%Y-%m-%d %H:%M:%f', , '+n hours')` |

| `LocalDateTime.PlusMinutes` | `strftime('%Y-%m-%d %H:%M:%f', , '+n minutes')` |

| `LocalDateTime.PlusSeconds` | `strftime('%Y-%m-%d %H:%M:%f', , '+n seconds')` |

| `LocalDateTime.PlusMilliseconds` | `strftime('%Y-%m-%d %H:%M:%f', , '+0.n seconds')` |

| `LocalDateTime.ToDateTimeUnspecified` | `strftime('%Y-%m-%d %H:%M:%f', )` |

When these methods are chained, all modifiers will be added to the same function call, like this:

```csharp

context.NodaTime.Select(x => x.LocalDateTime.PlusMonths(2).PlusDays(2).PlusHours(2).PlusSeconds(2))

```

Results in the following SQL:

```sql

SELECT strftime('%Y-%m-%d %H:%M:%f', "n"."LocalDateTime", '+2 months', '+2 days', '+2 hours', '+2 seconds')

```