client: support post queries and declared result members

[berezovskyi]

• Adds support for POST method in OSLC Queries
• Adds support for LDP-container specified membership predicates for OSLC Queries.
• Fixes the query total count parsing

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 63fd7f3 and 50e6908.

📒 Files selected for processing (5)

• CHANGELOG.md
• OSLC4Net_SDK/OSLC4Net.Client/Oslc/Resources/OslcQuery.cs
• OSLC4Net_SDK/OSLC4Net.Client/Oslc/Resources/OslcQueryResult.cs
• OSLC4Net_SDK/Tests/OSLC4Net.Client.Tests/OslcQueryResultTests.cs
• OSLC4Net_SDK/Tests/OSLC4Net.Client.Tests/OslcQueryTests.cs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch client/oslc-query-post

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[github-code-quality]

Code Coverage Overview

Languages: C#

C# / dotnet/cobertura

The overall coverage in the client/oslc-query-po... branch is 56%. The coverage in the main branch is 55%.

Show a code coverage summary of the most impacted files.

File	main 63fd7f3	client/oslc-query-po... 50e6908	+/-
/home/runner/wo...c/OslcClient.cs	38%	39%	+1%
/home/runner/wo...cQueryResult.cs	73%	77%	+4%
/home/runner/wo...es/OslcQuery.cs	49%	79%	+30%
/home/runner/wo...ryParameters.cs	0%	48%	+48%

---

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.87%. Comparing base (63fd7f3) to head (50e6908).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #803      +/-   ##
==========================================
+ Coverage   51.26%   51.87%   +0.60%     
==========================================
  Files         174      174              
  Lines       10281    10337      +56     
  Branches     1057     1067      +10     
==========================================
+ Hits         5271     5362      +91     
+ Misses       4750     4720      -30     
+ Partials      260      255       -5     

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[Copilot]

Pull request overview

This PR extends the OSLC client query support by adding HTTP POST-based query submission and improving how query results detect membership predicates (including LDP containers and explicitly declared member relations), with corresponding tests and changelog entries.

Changes:

• Add OslcQuery.SubmitPost() to submit OSLC query parameters via application/x-www-form-urlencoded POST.
• Improve OslcQueryResult membership detection (explicit member relation, LDP hasMemberRelation/membershipResource, and ldp:contains) and totalCount parsing from RDF literals.
• Add/extend client tests covering POST body encoding and membership predicate resolution behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
OSLC4Net_SDK/Tests/OSLC4Net.Client.Tests/OslcQueryTests.cs	New tests covering member relation validation and POST form body encoding (no double-encoding).
OSLC4Net_SDK/Tests/OSLC4Net.Client.Tests/OslcQueryResultTests.cs	Expanded tests for explicit membership predicates, LDP container behavior, and literal totalCount parsing.
OSLC4Net_SDK/OSLC4Net.Client/Oslc/Resources/OslcQueryResult.cs	Update membership predicate resolution logic and parse totalCount from ILiteralNode.
OSLC4Net_SDK/OSLC4Net.Client/Oslc/Resources/OslcQuery.cs	Add explicit member-relation support and implement POST submission path.
CHANGELOG.md	Document new POST query support and query result membership/totalCount fixes.