Module mango 

Query engine for RouchDB — Mango selectors and map/reduce views.

Provides two query mechanisms:

1. Mango queries — CouchDB-compatible selector-based document matching with field projection, sorting, and pagination.

2. Map/reduce views — Temporary (ad-hoc) views using Rust closures with built-in reduce functions (sum, count, stats) and custom reducers. Mango query engine — CouchDB-compatible selector-based document queries.

Supports the standard Mango operators: $eq, $ne, $gt, $gte, $lt, $lte, $in, $nin, $exists, $regex, $elemMatch, $all, $size, $or, $and, $not, $nor, $mod, $type.

Structs

BuiltIndex

A built in-memory index: sorted entries of (composite_key, doc_id).

CreateIndexResponse

Result of creating an index.

ExplainIndex

Description of the index used by a query.

ExplainResponse

Response from explain() describing how a query would be executed.

FindOptions

Options for a Mango find query.

FindResponse

Result of a find query.

IndexDefinition

Definition of a Mango index.

IndexFields

The fields portion of an index definition.

IndexInfo

Information about an existing index.

Enums

SortDirection

SortField

A single sort field with direction.

Functions

build_index

Build an index from all documents in an adapter.

find

Execute a Mango find query against an adapter.

matches_selector

Check if a document matches a Mango selector.