Parse OData $filter and $orderby query strings and translate them into FilterElement<T> / IQuery<T> instances for SLDataGateway, so an SDM object model can be queried using OData directly from an HTTP API.
using Skyline.DataMiner.SDM;
using Skyline.DataMiner.SDM.Exposers;
using Skyline.DataMiner.SDM.OData;
using SLDataGateway.API.Querying;
public class Person : SdmObject<Person>
{
public override string Identifier { get; set; }
public string Name { get; set; }
public int Age { get; set; }
}
public static class PersonExposers
{
public static readonly Exposer<Person, string> Name = new Exposer<Person, string>(p => p.Name, "Name");
public static readonly Exposer<Person, int> Age = new Exposer<Person, int>(p => p.Age, "Age");
}
// Translate the incoming OData query string parameters into an SLDataGateway query.
var translator = new ODataSdmTranslator<Person>();
IQuery<Person> query = translator.Translate(
filter: "Name eq 'John Doe' and Age gt 30",
orderBy: "Age desc");
var results = repository.Read(query);If you have questions, you can post them to our DataMiner community platform.
| Project | Purpose |
|---|---|
OData |
The main library (Skyline.DataMiner.SDM.OData on NuGet) — the OData tokenizer/parsers, AST, visitors, and the ODataSdmTranslator<T>. |
OData.Tests |
Unit tests for the project above (MSTest + FluentAssertions). |
dotnet add package Skyline.DataMiner.SDM.OData| Feature | Description |
|---|---|
$filter parsing |
and, or, not, comparison operators (eq, ne, gt, ge, lt, le), contains(...), and grouping with parentheses |
$orderby parsing |
Single or multiple fields, asc/desc |
| Collection filtering | any(variable: predicate) on collection properties, including nested contains(...) calls |
| SLDataGateway translation | Resolves properties through ExposerRegistry, the same mechanism used by regular (non-OData) queries, so only properties exposed via an Exposer<T, ...> are queryable |
| Extensible AST | ODataNode hierarchy plus IODataVisitor/ODataVisitor/ODataWalker for writing custom translators or tooling |
- Solution file:
Skyline.DataMiner.SDM.OData.slnx(target frameworknet48). - Build:
dotnet build .\Skyline.DataMiner.SDM.OData.slnx -c Release - Test:
dotnet test .\OData.Tests\OData.Tests.csproj
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