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//! Basic usage example for iddqd with schemars.
use iddqd::{
BiHashItem, BiHashMap, IdHashItem, IdHashMap, TriHashItem, TriHashMap,
bi_upcast, id_upcast, tri_upcast,
};
use schemars::{JsonSchema, schema_for};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
#[derive(Debug, Serialize, Deserialize, JsonSchema)]
struct User {
name: String,
email: String,
age: u32,
}
impl IdHashItem for User {
type Key<'a> = &'a str;
fn key(&self) -> Self::Key<'_> {
&self.name
}
id_upcast!();
}
impl BiHashItem for User {
type K1<'a> = &'a str; // name
type K2<'a> = &'a str; // email
fn key1(&self) -> Self::K1<'_> {
&self.name
}
fn key2(&self) -> Self::K2<'_> {
&self.email
}
bi_upcast!();
}
impl TriHashItem for User {
type K1<'a> = &'a str; // name
type K2<'a> = &'a str; // email
type K3<'a> = u32; // age
fn key1(&self) -> Self::K1<'_> {
&self.name
}
fn key2(&self) -> Self::K2<'_> {
&self.email
}
fn key3(&self) -> Self::K3<'_> {
self.age
}
tri_upcast!();
}
// Example container struct that uses iddqd maps with schema generation
#[derive(Serialize, Deserialize, JsonSchema)]
struct UserDatabase {
/// Users indexed by name
users_by_name: IdHashMap<User>,
/// Users with bidirectional lookup by name and email
users_bi: BiHashMap<User>,
/// Users with three-way lookup by name, email, and age
users_tri: TriHashMap<User>,
/// Regular HashMap for comparison
metadata: HashMap<String, String>,
}
fn main() {
println!("* schemas:\n");
// Generate schemas for individual map types.
println!("*** schema for IdHashMap<User>:");
let id_hash_schema = schema_for!(IdHashMap<User>);
println!("{}\n", serde_json::to_string_pretty(&id_hash_schema).unwrap());
println!("*** schema for BiHashMap<User>:");
let bi_hash_schema = schema_for!(BiHashMap<User>);
println!("{}\n", serde_json::to_string_pretty(&bi_hash_schema).unwrap());
println!("*** schema for TriHashMap<User>:");
let tri_hash_schema = schema_for!(TriHashMap<User>);
println!("{}\n", serde_json::to_string_pretty(&tri_hash_schema).unwrap());
// Generate a schema for the container struct.
println!("schema for UserDatabase (container with multiple map types):");
let database_schema = schema_for!(UserDatabase);
println!("{}\n", serde_json::to_string_pretty(&database_schema).unwrap());
let mut users = IdHashMap::new();
users
.insert_unique(User {
name: "Alice".to_string(),
email: "alice@example.com".to_string(),
age: 30,
})
.unwrap();
users
.insert_unique(User {
name: "Bob".to_string(),
email: "bob@example.com".to_string(),
age: 25,
})
.unwrap();
println!("IdHashMap<User> serializes as:");
println!("{}", serde_json::to_string_pretty(&users).unwrap());
}
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