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use std::collections::HashSet;
use std::iter::FromIterator;
use std::sync::mpsc::channel;
use std::time::Duration;
use timely::dataflow::channels::pact::Pipeline;
use timely::dataflow::operators::Operator;
use declarative_dataflow::binding::Binding;
use declarative_dataflow::plan::{Hector, Implementable, Union};
use declarative_dataflow::server::Server;
use declarative_dataflow::{Aid, Value};
use declarative_dataflow::{AttributeConfig, InputSemantics, Plan, Rule, TxData};
use Value::{Eid, Number, String};
struct Case {
description: &'static str,
plan: Plan,
transactions: Vec<Vec<TxData>>,
expectations: Vec<Vec<(Vec<Value>, u64, isize)>>,
}
fn dependencies(case: &Case) -> HashSet<Aid> {
let mut deps = HashSet::new();
for binding in case.plan.into_bindings().iter() {
if let Binding::Attribute(binding) = binding {
deps.insert(binding.source_attribute.clone());
}
}
deps
}
fn run_cases(mut cases: Vec<Case>) {
for case in cases.drain(..) {
timely::execute_directly(move |worker| {
let mut server = Server::<u64, u64>::new(Default::default());
let (send_results, results) = channel();
dbg!(case.description);
let mut deps = dependencies(&case);
let plan = case.plan.clone();
for tx in case.transactions.iter() {
for datum in tx {
deps.insert(datum.2.clone());
}
}
worker.dataflow::<u64, _, _>(|scope| {
for dep in deps.iter() {
server
.context
.internal
.create_attribute(dep, AttributeConfig::tx_time(InputSemantics::Raw), scope)
.unwrap();
}
server
.test_single(
scope,
Rule {
name: "query".to_string(),
plan,
},
)
.inner
.sink(Pipeline, "Results", move |input| {
input.for_each(|_time, data| {
for datum in data.iter() {
send_results.send(datum.clone()).unwrap()
}
});
});
});
let mut transactions = case.transactions.clone();
let mut next_tx = 0;
for (tx_id, tx_data) in transactions.drain(..).enumerate() {
next_tx += 1;
server.transact(tx_data, 0, 0).unwrap();
server.advance_domain(None, next_tx).unwrap();
worker.step_while(|| server.is_any_outdated());
let mut expected: HashSet<(Vec<Value>, u64, isize)> =
HashSet::from_iter(case.expectations[tx_id].iter().cloned());
for _i in 0..expected.len() {
match results.recv_timeout(Duration::from_millis(400)) {
Err(_err) => {
panic!("No result.");
}
Ok(result) => {
if !expected.remove(&result) {
panic!("Unknown result {:?}.", result);
}
}
}
}
match results.recv_timeout(Duration::from_millis(400)) {
Err(_err) => {}
Ok(result) => {
panic!("Extraneous result {:?}", result);
}
}
}
});
}
}
#[test]
fn or() {
let data = vec![
TxData(1, 1, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 1, ":age".to_string(), Number(10)),
TxData(1, 2, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 2, ":age".to_string(), Number(20)),
TxData(1, 3, ":name".to_string(), String("Oleg".to_string())),
TxData(1, 3, ":age".to_string(), Number(10)),
TxData(1, 4, ":name".to_string(), String("Oleg".to_string())),
TxData(1, 4, ":age".to_string(), Number(20)),
TxData(1, 5, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 5, ":age".to_string(), Number(10)),
TxData(1, 6, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 6, ":age".to_string(), Number(20)),
];
run_cases(vec![
Case {
description: "[:find ?e :where (or [?e :name Oleg] [?e :age 10])]",
plan: Plan::Union(Union {
variables: vec![0],
plans: vec![
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":name", 1),
Binding::constant(1, String("Oleg".to_string())),
],
}),
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":age", 1),
Binding::constant(1, Number(10)),
],
}),
],
}),
transactions: vec![data.clone()],
expectations: vec![vec![
(vec![Eid(1)], 0, 1),
(vec![Eid(3)], 0, 1),
(vec![Eid(4)], 0, 1),
(vec![Eid(5)], 0, 1),
]],
},
Case {
description: "[:find ?e :where (or [?e :name Oleg] [?e :age 30])] (one branch empty)",
plan: Plan::Union(Union {
variables: vec![0],
plans: vec![
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":name", 1),
Binding::constant(1, String("Oleg".to_string())),
],
}),
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":age", 1),
Binding::constant(1, Number(30)),
],
}),
],
}),
transactions: vec![data.clone()],
expectations: vec![vec![(vec![Eid(3)], 0, 1), (vec![Eid(4)], 0, 1)]],
},
Case {
description: "[:find ?e :where (or [?e :name Petr] [?e :age 30])] (both empty)",
plan: Plan::Union(Union {
variables: vec![0],
plans: vec![
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":name", 1),
Binding::constant(1, String("Petr".to_string())),
],
}),
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":age", 1),
Binding::constant(1, Number(30)),
],
}),
],
}),
transactions: vec![data.clone()],
expectations: vec![vec![]],
},
// @TODO must be able to identify the conflict between the two
// constant bindings
//
// Case {
// description: "[:find ?e :where [?e :name Ivan] (or [?e :name Oleg] [?e :age 10])] (join with 1 var)",
// plan: Plan::Union(Union {
// variables: vec![0],
// plans: vec![
// Plan::Hector(Hector {
// variables: vec![0],
// bindings: vec![
// Binding::attribute(0, ":name", 1),
// Binding::constant(1, String("Ivan".to_string())),
// Binding::constant(1, String("Oleg".to_string())),
// ],
// }),
// Plan::Hector(Hector {
// variables: vec![0],
// bindings: vec![
// Binding::attribute(0, ":name", 1),
// Binding::constant(1, String("Ivan".to_string())),
// Binding::attribute(0, ":age", 2),
// Binding::constant(2, Number(10)),
// ],
// }),
// ],
// }),
// transactions: vec![data.clone()],
// expectations: vec![vec![
// (vec![Eid(1)], 0, 1),
// (vec![Eid(5)], 0, 1),
// ]],
// },
Case {
description: "[:find ?e
:where
[?e :age ?a]
(or (and [?e :name Ivan] [1 :age a])
(and [?e :name Oleg] [2 :age a]))] (join with 2 vars)",
plan: Plan::Union(Union {
variables: vec![0],
plans: vec![
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":age", 2),
Binding::attribute(0, ":name", 1),
Binding::constant(1, String("Ivan".to_string())),
Binding::attribute(3, ":age", 2),
Binding::constant(3, Eid(1)),
],
}),
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":age", 2),
Binding::attribute(0, ":name", 1),
Binding::constant(1, String("Oleg".to_string())),
Binding::attribute(3, ":age", 2),
Binding::constant(3, Eid(2)),
],
}),
],
}),
transactions: vec![data.clone()],
expectations: vec![vec![
(vec![Eid(1)], 0, 1),
(vec![Eid(5)], 0, 1),
(vec![Eid(4)], 0, 1),
]],
},
]);
}
#[test]
fn or_join() {
let data = vec![
TxData(1, 1, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 1, ":age".to_string(), Number(10)),
TxData(1, 2, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 2, ":age".to_string(), Number(20)),
TxData(1, 3, ":name".to_string(), String("Oleg".to_string())),
TxData(1, 3, ":age".to_string(), Number(10)),
TxData(1, 4, ":name".to_string(), String("Oleg".to_string())),
TxData(1, 4, ":age".to_string(), Number(20)),
TxData(1, 5, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 5, ":age".to_string(), Number(10)),
TxData(1, 6, ":name".to_string(), String("Ivan".to_string())),
TxData(1, 6, ":age".to_string(), Number(20)),
];
run_cases(vec![Case {
description: "[:find ?e
:where
(or-join [?e]
[?e :name ?n]
(and [?e :age ?a] [?e :name ?n]))]",
plan: Plan::Union(Union {
variables: vec![0],
plans: vec![
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![Binding::attribute(0, ":name", 2)],
}),
Plan::Hector(Hector {
variables: vec![0],
bindings: vec![
Binding::attribute(0, ":age", 1),
Binding::attribute(0, ":name", 2),
],
}),
],
}),
transactions: vec![data.clone()],
expectations: vec![vec![
(vec![Eid(1)], 0, 1),
(vec![Eid(2)], 0, 1),
(vec![Eid(3)], 0, 1),
(vec![Eid(4)], 0, 1),
(vec![Eid(5)], 0, 1),
(vec![Eid(6)], 0, 1),
]],
}]);
}