How to use the Specification Pattern to Clean Up Query Logic in C#, .NET
The article discusses the challenges faced while building a content management platform using .NET 9. It highlights the complexity of the repository layer due to the need for multiple query methods for different filters. The author introduces the Specification Pattern as a solution to streamline query logic and improve code reusability.
- ▪The content management platform manages various types of content including videos and articles.
- ▪The repository layer became complicated with numerous methods for different query filters.
- ▪The Specification Pattern is proposed as a way to simplify query logic by encapsulating filtering conditions into separate classes.
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| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/coolbeatz71/how-to-use-the-specification-pattern-to-clean-up-query-logic-in-c-net-3feg |
| Publication time | Tue, 26 May 2026 13:29:42 +0000 |
| Retrieval time | 2026-05-26T13:37:49.521Z |
| Last seen | 2026-05-26T13:37:49.521Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | GtE1G2dEDfbv |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 614342) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Mutombo jean-vincent Posted on May 26 How to use the Specification Pattern to Clean Up Query Logic in C#, .NET #csharp #specification #cleanarchitecture #dotnet The Problem I was building a content management platform with a .NET 9 backend. The platform manages videos, articles, lyrics, and a bunch of lookup tables. Pretty standard stuff. But the repository layer started getting ugly fast. Every time I needed to query something, I was writing a new method on the repository.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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