use exocore_protos::{
prost::Message,
store::{Entity, Trait},
NamedMessage,
};
pub type EntityId = String;
pub type EntityIdRef<'s> = &'s str;
pub type TraitId = String;
pub type TraitIdRef<'s> = &'s str;
pub struct TraitInstance<'e, M: NamedMessage + Message + Default> {
pub instance: M,
pub trt: &'e Trait,
}
pub trait EntityExt {
fn trait_with_id<M: NamedMessage + Message + Default>(
&self,
id: &str,
) -> Option<TraitInstance<M>>;
fn traits_of_type<M: NamedMessage + Message + Default>(&self) -> Vec<TraitInstance<M>>;
fn trait_of_type<M: NamedMessage + Message + Default>(&self) -> Option<TraitInstance<M>>;
}
impl EntityExt for Entity {
fn trait_with_id<M: NamedMessage + Message + Default>(
&self,
id: &str,
) -> Option<TraitInstance<M>> {
let msg_any_url = M::protobuf_any_url();
self.traits
.iter()
.filter(|t| t.id == id)
.flat_map(|t| {
let msg = t.message.as_ref()?;
if msg.type_url == msg_any_url {
let instance = M::decode(msg.value.as_slice()).ok()?;
Some(TraitInstance { instance, trt: t })
} else {
None
}
})
.next()
}
fn traits_of_type<M: NamedMessage + Message + Default>(&self) -> Vec<TraitInstance<M>> {
let msg_any_url = M::protobuf_any_url();
self.traits
.iter()
.flat_map(|t| {
let msg = t.message.as_ref()?;
if msg.type_url == msg_any_url {
let instance = M::decode(msg.value.as_slice()).ok()?;
Some(TraitInstance { instance, trt: t })
} else {
None
}
})
.collect()
}
fn trait_of_type<M: NamedMessage + Message + Default>(&self) -> Option<TraitInstance<M>> {
let msg_any_url = M::protobuf_any_url();
self.traits
.iter()
.flat_map(|t| {
let msg = t.message.as_ref()?;
if msg.type_url == msg_any_url {
let instance = M::decode(msg.value.as_slice()).ok()?;
Some(TraitInstance { instance, trt: t })
} else {
None
}
})
.next()
}
}