Namespace eQuantic.Core.Data.Modeling

Classes

ClusteringKeyAttribute

Declares an ordered-read member — "I read this sorted, within the key" — and each store materializes the declaration as well as it can: Cassandra as a real clustering key (rows physically ordered in the partition), relational stores and MongoDB as a multi-column index with the declared directions, Cosmos DB as a composite index on the container's policy (two or more members). The semantics of queries never change; only the plan does.

ConcurrencyTokenAttribute

Declares the optimistic-concurrency token: the versioned column on relational stores (WHERE … AND version = @old, bumped on every write), the _etag member on Cosmos DB (conditional If-Match replace).

CounterAttribute

Declares a Cassandra counter column (the table mutates through increments, never inserts).

EntityAttribute

The store-neutral modeling vocabulary: one set of eQuantic-owned annotations that every provider interprets — no driver attributes on entities ([BsonElement], EF's [Column]…), no rewrite when an entity moves between stores. The names are deliberately distinct from System.ComponentModel.DataAnnotations so both can coexist without ambiguity.

Precedence is explicit and deterministic: conventions < annotations < fluent — the annotations seed each provider's model builder, and fluent configuration overrides them. Each provider honours the subset that maps to its store (the model's Explain() shows the outcome); annotations outside a store's vocabulary are ignored, never errors.

EntityKeyAttribute

Declares the entity's key member (a member named Id is the convention otherwise).

FacetAttribute

Declares storage facets for a member — a maximum Length for text, a Precision/Scale for decimals. Relational DDL sizes the column with them (varchar(n), numeric(p,s)); stores without sized types ignore them.

PartitionKeyAttribute

Declares the member part of the partition key — the access-pattern declaration: Cassandra's partition key and Cosmos DB's partition key path (compose with Order — Cosmos builds a hierarchical, multi-hash key from up to three members). Relational stores and MongoDB have no partition concept and ignore it.

SearchIndexAttribute

Declares a search-indexed text member: StartsWith/EndsWith/Contains and Db.Like push down natively on it (Cassandra SASI; the migration creates the index).

StoredAsAttribute

The member's stored name — a column (relational), a document field (MongoDB) — when the provider's naming convention does not fit.

TimeToLiveAttribute

Declares the entity's default time-to-live (Cosmos DB container TTL).

UnmappedAttribute

Excludes the member from the mapping (navigations are excluded automatically; this is for the rest).

Enums

SearchMode

What a search index can match — and therefore which LIKE shapes push down.