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//! A document is a direct member of a collection.
use serde::{ Serialize, Deserialize };
use mongodb::{
common::WriteConcern,
coll::options::{
IndexModel,
FindOptions,
CountOptions,
DistinctOptions,
AggregateOptions,
InsertManyOptions,
FindOneAndUpdateOptions,
},
};
use crate::uid::Uid;
/// Implemented by top-level (direct collection member) documents only.
/// These types always have an associated top-level name and an `_id` field.
pub trait Doc: Serialize + for<'a> Deserialize<'a> {
/// The type of the unique IDs for the document. A good default choice
/// is `ObjectId`. TODO(H2CO3): make it default to `ObjectId` (#29661).
type Id: Eq + Serialize + for <'a> Deserialize<'a>;
/// The name of the collection within the database.
const NAME: &'static str;
/// Get the unique ID of this document if it exists.
fn id(&self) -> Option<&Uid<Self>>;
/// Set or change the unique ID of this document.
fn set_id(&mut self, id: Uid<Self>);
/// Returns the specifications of the indexes created on the collection.
/// If not provided, returns an empty vector, leading to the collection not
/// bearing any user-defined indexes. (The `_id` field will still be
/// indexed, though, as defined by MongoDB.)
fn indexes() -> Vec<IndexModel> {
Vec::new()
}
/// Options for a count-only query.
fn count_options() -> CountOptions {
Default::default()
}
/// Options for a `distinct` query.
fn distinct_options() -> DistinctOptions {
Default::default()
}
/// Aggregation pipeline options.
fn aggregate_options() -> AggregateOptions {
Default::default()
}
/// Options for a regular query.
fn query_options() -> FindOptions {
Default::default()
}
/// Options for single and batch insertions.
fn insert_options() -> InsertManyOptions {
Default::default()
}
/// Options for a delete operation.
fn delete_options() -> WriteConcern {
Default::default()
}
/// Options for a (strictly non-upsert) update operation.
fn update_options() -> WriteConcern {
Default::default()
}
/// Options for upserting.
fn upsert_options() -> WriteConcern {
Default::default()
}
/// Options for find-and-update operations.
fn find_and_update_options() -> FindOneAndUpdateOptions {
Default::default()
}
}