374 lines
12 KiB
Rust
374 lines
12 KiB
Rust
// Copyright 2018 Mozilla
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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// this file except in compliance with the License. You may obtain a copy of the
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// License at http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#[macro_use]
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extern crate mentat;
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use std::collections::{BTreeMap, BTreeSet};
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use std::path::{Path, PathBuf};
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use core_traits::{Binding, StructuredMap};
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// TODO: re-export from Mentat.
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use mentat_core::ValueRc;
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use mentat::{
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Entid, HasSchema, IntoResult, Keyword, Pullable, QueryInputs, Queryable, RelResult, Store,
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TypedValue,
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};
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fn fixture_path(rest: &str) -> PathBuf {
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let fixtures = Path::new("fixtures/");
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fixtures.join(Path::new(rest))
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}
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#[test]
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fn test_simple_pull() {
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let beacon;
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let capitol;
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let beacon_district;
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let capitol_district;
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let mut store = Store::open("").expect("opened");
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{
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let mut in_progress = store.begin_transaction().expect("began");
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in_progress
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.import(fixture_path("cities.schema"))
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.expect("transacted schema");
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let report = in_progress
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.import(fixture_path("all_seattle.edn"))
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.expect("transacted data");
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// These tempid strings come out of all_seattle.edn.
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beacon = *report
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.tempids
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.get(&"a17592186045471".to_string())
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.expect("beacon");
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beacon_district = *report
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.tempids
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.get(&"a17592186045450".to_string())
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.expect("beacon district");
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capitol = *report
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.tempids
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.get(&"a17592186045439".to_string())
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.expect("capitol");
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capitol_district = *report
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.tempids
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.get(&"a17592186045438".to_string())
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.expect("capitol district");
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in_progress.commit().expect("committed");
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}
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let schema = store.conn().current_schema();
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let district = schema
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.get_entid(&kw!(:neighborhood/district))
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.expect("district")
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.0;
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let name = schema.get_entid(&kw!(:neighborhood/name)).expect("name").0;
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let attrs: BTreeSet<Entid> = vec![district, name].into_iter().collect();
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// Find Beacon Hill and Capitol Hill via query.
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let query = r#"[:find [?hood ...]
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:where
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(or [?hood :neighborhood/name "Beacon Hill"]
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[?hood :neighborhood/name "Capitol Hill"])]"#;
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let hoods: BTreeSet<Entid> = store
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.q_once(query, None)
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.into_coll_result()
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.expect("hoods")
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.into_iter()
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.map(|b| {
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b.into_scalar()
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.and_then(|tv| tv.into_entid())
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.expect("scalar")
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})
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.collect();
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println!("Hoods: {:?}", hoods);
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// The query and the tempids agree.
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assert_eq!(hoods, vec![beacon, capitol].into_iter().collect());
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// Pull attributes of those two neighborhoods.
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let pulled = store
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.begin_read()
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.expect("read")
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.pull_attributes_for_entities(hoods, attrs)
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.expect("pulled");
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// Here's what we expect:
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let c: StructuredMap = vec![
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(kw!(:neighborhood/name), "Capitol Hill".into()),
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(
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kw!(:neighborhood/district),
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TypedValue::Ref(capitol_district),
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),
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]
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.into();
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let b: StructuredMap = vec![
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(kw!(:neighborhood/name), "Beacon Hill".into()),
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(
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kw!(:neighborhood/district),
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TypedValue::Ref(beacon_district),
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),
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]
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.into();
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let expected: BTreeMap<Entid, ValueRc<StructuredMap>>;
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expected = vec![(capitol, c.into()), (beacon, b.into())]
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.into_iter()
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.collect();
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assert_eq!(pulled, expected);
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// Now test pull inside the query itself.
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let query = r#"[:find ?hood (pull ?district [:db/id
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:district/name :as :district/district
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:district/region])
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:where
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(or [?hood :neighborhood/name "Beacon Hill"]
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[?hood :neighborhood/name "Capitol Hill"])
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[?hood :neighborhood/district ?district]
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:order ?hood]"#;
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let results: RelResult<Binding> = store
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.begin_read()
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.expect("read")
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.q_once(query, None)
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.into_rel_result()
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.expect("results");
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let beacon_district_pull: Vec<(Keyword, TypedValue)> = vec![
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(kw!(:db/id), TypedValue::Ref(beacon_district)),
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(kw!(:district/district), "Greater Duwamish".into()),
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(
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kw!(:district/region),
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schema
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.get_entid(&Keyword::namespaced("region", "se"))
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.unwrap()
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.into(),
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),
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];
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let beacon_district_pull: StructuredMap = beacon_district_pull.into();
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let capitol_district_pull: Vec<(Keyword, TypedValue)> = vec![
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(kw!(:db/id), TypedValue::Ref(capitol_district)),
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(kw!(:district/district), "East".into()),
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(
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kw!(:district/region),
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schema
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.get_entid(&Keyword::namespaced("region", "e"))
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.unwrap()
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.into(),
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),
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];
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let capitol_district_pull: StructuredMap = capitol_district_pull.into();
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let expected = RelResult {
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width: 2,
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values: vec![
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TypedValue::Ref(capitol).into(),
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capitol_district_pull.into(),
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TypedValue::Ref(beacon).into(),
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beacon_district_pull.into(),
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],
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};
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assert_eq!(results, expected);
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// We can also prepare the query.
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let reader = store.begin_read().expect("read");
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let mut prepared = reader.q_prepare(query, None).expect("prepared");
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assert_eq!(
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prepared.run(None).into_rel_result().expect("results"),
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expected
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);
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// Execute a scalar query where the body is constant.
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// TODO: we shouldn't require `:where`; that makes this non-constant!
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let query = r#"[:find (pull ?hood [:db/id :as :neighborhood
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:neighborhood/name]) .
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:in ?hood
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:where [?hood :neighborhood/district _]]"#;
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let result = reader
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.q_once(
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query,
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QueryInputs::with_value_sequence(vec![(var!(?hood), TypedValue::Ref(beacon))]),
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)
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.into_scalar_result()
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.expect("success")
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.expect("result");
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let expected: StructuredMap = vec![
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(kw!(:neighborhood/name), TypedValue::from("Beacon Hill")),
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(kw!(:neighborhood), TypedValue::Ref(beacon)),
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]
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.into();
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assert_eq!(result, expected.into());
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// Collect the names and regions of all districts.
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let query = r#"[:find [(pull ?district [:district/name :district/region]) ...]
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:where [_ :neighborhood/district ?district]]"#;
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let results = reader
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.q_once(query, None)
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.into_coll_result()
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.expect("result");
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let expected: Vec<StructuredMap> = vec![
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vec![
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(kw!(:district/name), TypedValue::from("East")),
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(kw!(:district/region), TypedValue::Ref(65556)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Southwest")),
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(kw!(:district/region), TypedValue::Ref(65559)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Downtown")),
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(kw!(:district/region), TypedValue::Ref(65560)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Greater Duwamish")),
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(kw!(:district/region), TypedValue::Ref(65557)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Ballard")),
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(kw!(:district/region), TypedValue::Ref(65561)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Northeast")),
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(kw!(:district/region), TypedValue::Ref(65555)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Southeast")),
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(kw!(:district/region), TypedValue::Ref(65557)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Northwest")),
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(kw!(:district/region), TypedValue::Ref(65561)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Central")),
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(kw!(:district/region), TypedValue::Ref(65556)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Delridge")),
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(kw!(:district/region), TypedValue::Ref(65559)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Lake Union")),
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(kw!(:district/region), TypedValue::Ref(65560)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("Magnolia/Queen Anne")),
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(kw!(:district/region), TypedValue::Ref(65560)),
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]
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.into(),
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vec![
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(kw!(:district/name), TypedValue::from("North")),
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(kw!(:district/region), TypedValue::Ref(65555)),
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]
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.into(),
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];
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let expected: Vec<Binding> = expected.into_iter().map(|m| m.into()).collect();
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assert_eq!(results, expected);
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// Pull fulltext.
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let query = r#"[:find [(pull ?c [:community/name :community/category]) ...]
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:where
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[?c :community/name ?name]
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[?c :community/type :community.type/website]
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[(fulltext $ :community/category "food") [[?c ?cat]]]]"#;
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let results = reader
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.q_once(query, None)
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.into_coll_result()
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.expect("result");
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let expected: Vec<StructuredMap> = vec![
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vec![
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(
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kw!(:community/name),
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Binding::Scalar(TypedValue::from("Community Harvest of Southwest Seattle")),
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),
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(
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kw!(:community/category),
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vec![Binding::Scalar(TypedValue::from("sustainable food"))].into(),
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),
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]
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.into(),
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vec![
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(
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kw!(:community/name),
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Binding::Scalar(TypedValue::from("InBallard")),
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),
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(
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kw!(:community/category),
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vec![
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Binding::Scalar(TypedValue::from("shopping")),
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Binding::Scalar(TypedValue::from("food")),
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Binding::Scalar(TypedValue::from("nightlife")),
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Binding::Scalar(TypedValue::from("services")),
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]
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.into(),
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),
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]
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.into(),
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vec![
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(
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kw!(:community/name),
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Binding::Scalar(TypedValue::from("Seattle Chinatown Guide")),
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),
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(
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kw!(:community/category),
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vec![
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Binding::Scalar(TypedValue::from("shopping")),
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Binding::Scalar(TypedValue::from("food")),
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]
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.into(),
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),
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]
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.into(),
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vec![
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(
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kw!(:community/name),
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Binding::Scalar(TypedValue::from("University District Food Bank")),
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),
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(
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kw!(:community/category),
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vec![Binding::Scalar(TypedValue::from("food bank"))].into(),
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),
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]
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.into(),
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];
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let expected: Vec<Binding> = expected.into_iter().map(|m| m.into()).collect();
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assert_eq!(results, expected);
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}
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// TEST:
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// - Constant query bodies in pull.
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// - Values that are present in the cache (=> constant pull, too).
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// - Pull for each kind of find spec.
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// - That the keys in each map are ValueRc::ptr_eq.
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// - Entity presence/absence when the pull expressions don't match anything.
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// - Aliases. (No parser support yet.)
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