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Fix variables in predicates

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This commit is contained in:
Emily Toop 2018-04-12 09:42:55 +01:00
parent 6adb97c587
commit 5fbf17f4f9
3 changed files with 106 additions and 14 deletions
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19
query-algebrizer/src/clauses/resolve.rs
View file

@ -45,12 +45,19 @@ impl ConjoiningClauses {
use self::FnArg::*;
match arg {
FnArg::Variable(var) => {
match self.bound_value(&var) {
// The type is already known if it's a bound variable….
Some(TypedValue::Long(v)) => Ok(QueryValue::TypedValue(TypedValue::Long(v))),
Some(TypedValue::Double(v)) => Ok(QueryValue::TypedValue(TypedValue::Double(v))),
_ => {
self.constrain_var_to_numeric(var.clone());
self.column_bindings
.get(&var)
.and_then(|cols| cols.first().map(|col| QueryValue::Column(col.clone())))
.ok_or_else(|| Error::from_kind(ErrorKind::UnboundVariable(var.name())))
},
}
},
// Can't be an entid.
EntidOrInteger(i) => Ok(QueryValue::TypedValue(TypedValue::Long(i))),
IdentOrKeyword(_) |
@ -73,12 +80,18 @@ impl ConjoiningClauses {
use self::FnArg::*;
match arg {
FnArg::Variable(var) => {
match self.bound_value(&var) {
// The type is already known if it's a bound variable….
Some(TypedValue::Instant(v)) => Ok(QueryValue::TypedValue(TypedValue::Instant(v))),
_ => {
self.constrain_var_to_type(var.clone(), ValueType::Instant);
self.column_bindings
.get(&var)
.and_then(|cols| cols.first().map(|col| QueryValue::Column(col.clone())))
.ok_or_else(|| Error::from_kind(ErrorKind::UnboundVariable(var.name())))
},
}
},
Constant(NonIntegerConstant::Instant(v)) => {
Ok(QueryValue::TypedValue(TypedValue::Instant(v)))
},
@ -144,11 +157,17 @@ impl ConjoiningClauses {
use self::FnArg::*;
match arg {
FnArg::Variable(var) => {
match self.bound_value(&var) {
// The type is already known if it's a bound variable….
Some(v) => Ok(QueryValue::TypedValue(v)),
None => {
self.column_bindings
.get(&var)
.and_then(|cols| cols.first().map(|col| QueryValue::Column(col.clone())))
.ok_or_else(|| Error::from_kind(ErrorKind::UnboundVariable(var.name())))
},
}
},
EntidOrInteger(i) => Ok(QueryValue::PrimitiveLong(i)),
IdentOrKeyword(_) => unimplemented!(), // TODO
Constant(NonIntegerConstant::Boolean(val)) => Ok(QueryValue::TypedValue(TypedValue::Boolean(val))),

68
query-algebrizer/tests/predicate.rs
View file

@ -17,7 +17,10 @@ mod utils;
use mentat_core::{
Attribute,
DateTime,
Schema,
TypedValue,
Utc,
ValueType,
ValueTypeSet,
};
@ -32,11 +35,13 @@ use mentat_query_algebrizer::{
EmptyBecause,
ErrorKind,
Known,
QueryInputs,
};
use utils::{
add_attribute,
alg,
alg_with_inputs,
associate_ident,
bails,
};
@ -45,6 +50,7 @@ fn prepopulated_schema() -> Schema {
let mut schema = Schema::default();
associate_ident(&mut schema, NamespacedKeyword::new("foo", "date"), 65);
associate_ident(&mut schema, NamespacedKeyword::new("foo", "double"), 66);
associate_ident(&mut schema, NamespacedKeyword::new("foo", "long"), 67);
add_attribute(&mut schema, 65, Attribute {
value_type: ValueType::Instant,
multival: false,
@ -55,6 +61,11 @@ fn prepopulated_schema() -> Schema {
multival: false,
..Default::default()
});
add_attribute(&mut schema, 67, Attribute {
value_type: ValueType::Long,
multival: false,
..Default::default()
});
schema
}
@ -116,3 +127,60 @@ fn test_instant_predicates_require_instants() {
assert_eq!(cc.known_type(&Variable::from_valid_name("?t")).expect("?t is known"),
ValueType::Double);
}
#[test]
fn test_instant_predicates_accepts_var() {
let schema = prepopulated_schema();
let known = Known::for_schema(&schema);
let instant_var = Variable::from_valid_name("?time");
let instant_value = TypedValue::Instant(DateTime::parse_from_rfc3339("2018-04-11T19:17:00.000Z")
.map(|t| t.with_timezone(&Utc))
.expect("expected valid date"));
let query = r#"[:find ?e
:in ?time
:where
[?e :foo/date ?t]
[(< ?t ?time)]]"#;
let cc = alg_with_inputs(known, query, QueryInputs::with_value_sequence(vec![(instant_var.clone(), instant_value.clone())]));
assert_eq!(cc.known_type(&instant_var).expect("?time is known"),
ValueType::Instant);
let query = r#"[:find ?e
:in ?time
:where
[?e :foo/date ?t]
[(> ?time, ?t)]]"#;
let cc = alg_with_inputs(known, query, QueryInputs::with_value_sequence(vec![(instant_var.clone(), instant_value.clone())]));
assert_eq!(cc.known_type(&instant_var).expect("?time is known"),
ValueType::Instant);
}
#[test]
fn test_numeric_predicates_accepts_var() {
let schema = prepopulated_schema();
let known = Known::for_schema(&schema);
let numeric_var = Variable::from_valid_name("?long");
let numeric_value = TypedValue::Long(1234567);
// You can't use a string for an inequality: this is a straight-up error.
let query = r#"[:find ?e
:in ?long
:where
[?e :foo/long ?t]
[(> ?t ?long)]]"#;
let cc = alg_with_inputs(known, query, QueryInputs::with_value_sequence(vec![(numeric_var.clone(), numeric_value.clone())]));
assert_eq!(cc.known_type(&numeric_var).expect("?long is known"),
ValueType::Long);
let query = r#"[:find ?e
:in ?long
:where
[?e :foo/long ?t]
[(> ?long, ?t)]]"#;
let cc = alg_with_inputs(known, query, QueryInputs::with_value_sequence(vec![(numeric_var.clone(), numeric_value.clone())]));
assert_eq!(cc.known_type(&numeric_var).expect("?long is known"),
ValueType::Long);
}

5
query-algebrizer/tests/utils/mod.rs
View file

@ -98,3 +98,8 @@ pub fn alg(known: Known, input: &str) -> ConjoiningClauses {
let parsed = parse_find_string(input).expect("query input to have parsed");
algebrize(known, parsed).expect("algebrizing to have succeeded").cc
}
pub fn alg_with_inputs(known: Known, input: &str, inputs: QueryInputs) -> ConjoiningClauses {
let parsed = parse_find_string(input).expect("query input to have parsed");
algebrize_with_inputs(known, parsed, 0, inputs).expect("algebrizing to have succeeded").cc
}