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Pre: Extract entity_*_into_term_* helpers.

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This commit is contained in:
Nick Alexander 2017-06-06 13:18:47 -07:00
parent 4b0881a957
commit 0be78cf956
1 changed files with 41 additions and 51 deletions
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92
db/src/tx.rs
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@ -62,14 +62,16 @@ use entids;
use errors::{ErrorKind, Result};
use internal_types::{
Either,
EntidOr,
LookupRef,
LookupRefOrTempId,
TempIdHandle,
TempIdMap,
Term,
TermWithTempIdsAndLookupRefs,
TermWithTempIds,
TermWithTempIdsAndLookupRefs,
TermWithoutTempIds,
TypedValueOr,
replace_lookup_ref};
use mentat_core::{
@ -234,6 +236,39 @@ impl<'conn, 'a> Tx<'conn, 'a> {
self.mentat_id_count += 1;
entmod::EntidOrLookupRefOrTempId::TempId(TempId::Internal(self.mentat_id_count))
}
fn entity_e_into_term_e(&mut self, x: entmod::EntidOrLookupRefOrTempId) -> Result<EntidOr<LookupRefOrTempId>> {
match x {
entmod::EntidOrLookupRefOrTempId::Entid(e) => {
let e: i64 = match e {
entmod::Entid::Entid(ref e) => *e,
entmod::Entid::Ident(ref e) => self.schema.require_entid(&e)?,
};
Ok(Either::Left(e))
},
entmod::EntidOrLookupRefOrTempId::TempId(e) => {
Ok(Either::Right(LookupRefOrTempId::TempId(self.intern_temp_id(e))))
},
entmod::EntidOrLookupRefOrTempId::LookupRef(ref lookup_ref) => {
Ok(Either::Right(LookupRefOrTempId::LookupRef(self.intern_lookup_ref(lookup_ref)?)))
},
}
}
fn entity_a_into_term_a(&mut self, x: entmod::Entid) -> Result<(Entid, &'a Attribute)> {
let a = match x {
entmod::Entid::Entid(ref a) => *a,
entmod::Entid::Ident(ref a) => self.schema.require_entid(&a)?,
};
let attribute: &Attribute = self.schema.require_attribute_for_entid(a)?;
Ok((a, attribute))
}
fn entity_e_into_term_v(&mut self, x: entmod::EntidOrLookupRefOrTempId) -> Result<TypedValueOr<LookupRefOrTempId>> {
self.entity_e_into_term_e(x).map(|r| r.map_left(TypedValue::Ref))
}
}
let mut in_process = InProcess::with_schema(&self.schema);
@ -266,12 +301,7 @@ impl<'conn, 'a> Tx<'conn, 'a> {
},
Entity::AddOrRetract { op, e, a, v } => {
let a: i64 = match a {
entmod::Entid::Entid(ref a) => *a,
entmod::Entid::Ident(ref a) => self.schema.require_entid(&a)?,
};
let attribute: &Attribute = self.schema.require_attribute_for_entid(a)?;
let (a, attribute) = in_process.entity_a_into_term_a(a)?;
let v = match v {
entmod::AtomOrLookupRefOrVectorOrMapNotation::Atom(v) => {
@ -343,12 +373,8 @@ impl<'conn, 'a> Tx<'conn, 'a> {
}
for (inner_a, inner_v) in map_notation {
let inner_entid: i64 = match inner_a {
entmod::Entid::Entid(ref a) => *a,
entmod::Entid::Ident(ref a) => self.schema.require_entid(&a)?,
};
let (inner_a, inner_attribute) = in_process.entity_a_into_term_a(inner_a)?;
let inner_attribute: &Attribute = self.schema.require_attribute_for_entid(inner_entid)?;
if inner_attribute.unique == Some(attribute::Unique::Identity) {
dangling = false;
}
@ -356,7 +382,7 @@ impl<'conn, 'a> Tx<'conn, 'a> {
deque.push_front(Entity::AddOrRetract {
op: OpType::Add,
e: db_id.clone(),
a: entmod::Entid::Entid(inner_entid),
a: entmod::Entid::Entid(inner_a),
v: inner_v,
});
}
@ -365,47 +391,11 @@ impl<'conn, 'a> Tx<'conn, 'a> {
bail!(ErrorKind::NotYetImplemented(format!("Cannot explode nested map value that would lead to dangling entity for attribute {}", a)));
}
// Similar, but not identical, to the expansion of the entity position e
// below. This returns Either::Left(TypedValue) instances; that returns
// Either::Left(i64) instances.
match db_id {
entmod::EntidOrLookupRefOrTempId::Entid(e) => {
let e: i64 = match e {
entmod::Entid::Entid(ref e) => *e,
entmod::Entid::Ident(ref e) => self.schema.require_entid(&e)?,
};
Either::Left(TypedValue::Ref(e))
},
entmod::EntidOrLookupRefOrTempId::TempId(e) => {
Either::Right(LookupRefOrTempId::TempId(in_process.intern_temp_id(e)))
},
entmod::EntidOrLookupRefOrTempId::LookupRef(ref lookup_ref) => {
Either::Right(LookupRefOrTempId::LookupRef(in_process.intern_lookup_ref(lookup_ref)?))
},
}
},
};
let e = match e {
entmod::EntidOrLookupRefOrTempId::Entid(e) => {
let e: i64 = match e {
entmod::Entid::Entid(ref e) => *e,
entmod::Entid::Ident(ref e) => self.schema.require_entid(&e)?,
};
Either::Left(e)
},
entmod::EntidOrLookupRefOrTempId::TempId(e) => {
Either::Right(LookupRefOrTempId::TempId(in_process.intern_temp_id(e)))
},
entmod::EntidOrLookupRefOrTempId::LookupRef(ref lookup_ref) => {
Either::Right(LookupRefOrTempId::LookupRef(in_process.intern_lookup_ref(lookup_ref)?))
in_process.entity_e_into_term_v(db_id)?
},
};
let e = in_process.entity_e_into_term_e(e)?;
terms.push(Term::AddOrRetract(op, e, a, v));
},
}