mentat/query-translator/tests/translate.rs

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No EOL
16 KiB
Rust

// Copyright 2016 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
extern crate mentat_core;
extern crate mentat_query;
extern crate mentat_query_algebrizer;
extern crate mentat_query_parser;
extern crate mentat_query_translator;
extern crate mentat_sql;
use std::rc::Rc;
use mentat_query::NamespacedKeyword;
use mentat_core::{
Attribute,
Entid,
Schema,
ValueType,
};
use mentat_query_parser::parse_find_string;
use mentat_query_algebrizer::algebrize;
use mentat_query_translator::{
query_to_select,
};
use mentat_sql::SQLQuery;
fn associate_ident(schema: &mut Schema, i: NamespacedKeyword, e: Entid) {
schema.entid_map.insert(e, i.clone());
schema.ident_map.insert(i.clone(), e);
}
fn add_attribute(schema: &mut Schema, e: Entid, a: Attribute) {
schema.schema_map.insert(e, a);
}
fn translate<T: Into<Option<u64>>>(schema: &Schema, input: &'static str, limit: T) -> SQLQuery {
let parsed = parse_find_string(input).expect("parse failed");
let mut algebrized = algebrize(schema, parsed).expect("algebrize failed");
algebrized.apply_limit(limit.into());
let select = query_to_select(algebrized);
select.query.to_sql_query().unwrap()
}
fn prepopulated_typed_schema(foo_type: ValueType) -> Schema {
let mut schema = Schema::default();
associate_ident(&mut schema, NamespacedKeyword::new("foo", "bar"), 99);
add_attribute(&mut schema, 99, Attribute {
value_type: foo_type,
..Default::default()
});
schema
}
fn prepopulated_schema() -> Schema {
prepopulated_typed_schema(ValueType::String)
}
fn make_arg(name: &'static str, value: &'static str) -> (String, Rc<String>) {
(name.to_string(), Rc::new(value.to_string()))
}
#[test]
fn test_scalar() {
let schema = prepopulated_schema();
let input = r#"[:find ?x . :where [?x :foo/bar "yyy"]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v = $v0 LIMIT 1");
assert_eq!(args, vec![make_arg("$v0", "yyy")]);
}
#[test]
fn test_tuple() {
let schema = prepopulated_schema();
let input = r#"[:find [?x] :where [?x :foo/bar "yyy"]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v = $v0 LIMIT 1");
assert_eq!(args, vec![make_arg("$v0", "yyy")]);
}
#[test]
fn test_coll() {
let schema = prepopulated_schema();
let input = r#"[:find [?x ...] :where [?x :foo/bar "yyy"]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v = $v0");
assert_eq!(args, vec![make_arg("$v0", "yyy")]);
}
#[test]
fn test_rel() {
let schema = prepopulated_schema();
let input = r#"[:find ?x :where [?x :foo/bar "yyy"]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v = $v0");
assert_eq!(args, vec![make_arg("$v0", "yyy")]);
}
#[test]
fn test_limit() {
let schema = prepopulated_schema();
let input = r#"[:find ?x :where [?x :foo/bar "yyy"]]"#;
let SQLQuery { sql, args } = translate(&schema, input, 5);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v = $v0 LIMIT 5");
assert_eq!(args, vec![make_arg("$v0", "yyy")]);
}
#[test]
fn test_unknown_attribute_keyword_value() {
let schema = Schema::default();
let input = r#"[:find ?x :where [?x _ :ab/yyy]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
// Only match keywords, not strings: tag = 13.
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.v = $v0 AND `datoms00`.value_type_tag = 13");
assert_eq!(args, vec![make_arg("$v0", ":ab/yyy")]);
}
#[test]
fn test_unknown_attribute_string_value() {
let schema = Schema::default();
let input = r#"[:find ?x :where [?x _ "horses"]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
// We expect all_datoms because we're querying for a string. Magic, that.
// We don't want keywords etc., so tag = 10.
assert_eq!(sql, "SELECT DISTINCT `all_datoms00`.e AS `?x` FROM `all_datoms` AS `all_datoms00` WHERE `all_datoms00`.v = $v0 AND `all_datoms00`.value_type_tag = 10");
assert_eq!(args, vec![make_arg("$v0", "horses")]);
}
#[test]
fn test_unknown_attribute_double_value() {
let schema = Schema::default();
let input = r#"[:find ?x :where [?x _ 9.95]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
// In general, doubles _could_ be 1.0, which might match a boolean or a ref. Set tag = 5 to
// make sure we only match numbers.
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.v = 9.95 AND `datoms00`.value_type_tag = 5");
assert_eq!(args, vec![]);
}
#[test]
fn test_unknown_attribute_integer_value() {
let schema = Schema::default();
let negative = r#"[:find ?x :where [?x _ -1]]"#;
let zero = r#"[:find ?x :where [?x _ 0]]"#;
let one = r#"[:find ?x :where [?x _ 1]]"#;
let two = r#"[:find ?x :where [?x _ 2]]"#;
// Can't match boolean; no need to filter it out.
let SQLQuery { sql, args } = translate(&schema, negative, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.v = -1");
assert_eq!(args, vec![]);
// Excludes booleans.
let SQLQuery { sql, args } = translate(&schema, zero, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE (`datoms00`.v = 0 AND `datoms00`.value_type_tag <> 1)");
assert_eq!(args, vec![]);
// Excludes booleans.
let SQLQuery { sql, args } = translate(&schema, one, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE (`datoms00`.v = 1 AND `datoms00`.value_type_tag <> 1)");
assert_eq!(args, vec![]);
// Can't match boolean; no need to filter it out.
let SQLQuery { sql, args } = translate(&schema, two, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.v = 2");
assert_eq!(args, vec![]);
}
#[test]
fn test_unknown_ident() {
let schema = Schema::default();
let impossible = r#"[:find ?x :where [?x :db/ident :no/exist]]"#;
let parsed = parse_find_string(impossible).expect("parse failed");
let algebrized = algebrize(&schema, parsed).expect("algebrize failed");
// This query cannot return results: the ident doesn't resolve for a ref-typed attribute.
assert!(algebrized.is_known_empty());
// If you insist…
let select = query_to_select(algebrized);
let sql = select.query.to_sql_query().unwrap().sql;
assert_eq!("SELECT 1 LIMIT 0", sql);
}
#[test]
fn test_numeric_less_than_unknown_attribute() {
let schema = Schema::default();
let input = r#"[:find ?x :where [?x _ ?y] [(< ?y 10)]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
// Although we infer numericness from numeric predicates, we've already assigned a table to the
// first pattern, and so this is _still_ `all_datoms`.
assert_eq!(sql, "SELECT DISTINCT `all_datoms00`.e AS `?x` FROM `all_datoms` AS `all_datoms00` WHERE `all_datoms00`.v < 10");
assert_eq!(args, vec![]);
}
#[test]
fn test_numeric_gte_known_attribute() {
let schema = prepopulated_typed_schema(ValueType::Double);
let input = r#"[:find ?x :where [?x :foo/bar ?y] [(>= ?y 12.9)]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v >= 12.9");
assert_eq!(args, vec![]);
}
#[test]
fn test_numeric_not_equals_known_attribute() {
let schema = prepopulated_typed_schema(ValueType::Long);
let input = r#"[:find ?x . :where [?x :foo/bar ?y] [(!= ?y 12)]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT `datoms00`.e AS `?x` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99 AND `datoms00`.v <> 12 LIMIT 1");
assert_eq!(args, vec![]);
}
#[test]
fn test_simple_or_join() {
let mut schema = Schema::default();
associate_ident(&mut schema, NamespacedKeyword::new("page", "url"), 97);
associate_ident(&mut schema, NamespacedKeyword::new("page", "title"), 98);
associate_ident(&mut schema, NamespacedKeyword::new("page", "description"), 99);
for x in 97..100 {
add_attribute(&mut schema, x, Attribute {
value_type: ValueType::String,
..Default::default()
});
}
let input = r#"[:find [?url ?description]
:where
(or-join [?page]
[?page :page/url "http://foo.com/"]
[?page :page/title "Foo"])
[?page :page/url ?url]
[?page :page/description ?description]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT `datoms01`.v AS `?url`, `datoms02`.v AS `?description` FROM `datoms` AS `datoms00`, `datoms` AS `datoms01`, `datoms` AS `datoms02` WHERE ((`datoms00`.a = 97 AND `datoms00`.v = $v0) OR (`datoms00`.a = 98 AND `datoms00`.v = $v1)) AND `datoms01`.a = 97 AND `datoms02`.a = 99 AND `datoms00`.e = `datoms01`.e AND `datoms00`.e = `datoms02`.e LIMIT 1");
assert_eq!(args, vec![make_arg("$v0", "http://foo.com/"), make_arg("$v1", "Foo")]);
}
#[test]
fn test_complex_or_join() {
let mut schema = Schema::default();
associate_ident(&mut schema, NamespacedKeyword::new("page", "save"), 95);
add_attribute(&mut schema, 95, Attribute {
value_type: ValueType::Ref,
..Default::default()
});
associate_ident(&mut schema, NamespacedKeyword::new("save", "title"), 96);
associate_ident(&mut schema, NamespacedKeyword::new("page", "url"), 97);
associate_ident(&mut schema, NamespacedKeyword::new("page", "title"), 98);
associate_ident(&mut schema, NamespacedKeyword::new("page", "description"), 99);
for x in 96..100 {
add_attribute(&mut schema, x, Attribute {
value_type: ValueType::String,
..Default::default()
});
}
let input = r#"[:find [?url ?description]
:where
(or-join [?page]
[?page :page/url "http://foo.com/"]
[?page :page/title "Foo"]
(and
[?page :page/save ?save]
[?save :save/title "Foo"]))
[?page :page/url ?url]
[?page :page/description ?description]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT `datoms04`.v AS `?url`, \
`datoms05`.v AS `?description` \
FROM (SELECT `datoms00`.e AS `?page` \
FROM `datoms` AS `datoms00` \
WHERE `datoms00`.a = 97 \
AND `datoms00`.v = $v0 \
UNION \
SELECT `datoms01`.e AS `?page` \
FROM `datoms` AS `datoms01` \
WHERE `datoms01`.a = 98 \
AND `datoms01`.v = $v1 \
UNION \
SELECT `datoms02`.e AS `?page` \
FROM `datoms` AS `datoms02`, \
`datoms` AS `datoms03` \
WHERE `datoms02`.a = 95 \
AND `datoms03`.a = 96 \
AND `datoms03`.v = $v2 \
AND `datoms02`.v = `datoms03`.e) AS `c00`, \
`datoms` AS `datoms04`, \
`datoms` AS `datoms05` \
WHERE `datoms04`.a = 97 \
AND `datoms05`.a = 99 \
AND `c00`.`?page` = `datoms04`.e \
AND `c00`.`?page` = `datoms05`.e \
LIMIT 1");
assert_eq!(args, vec![make_arg("$v0", "http://foo.com/"),
make_arg("$v1", "Foo"),
make_arg("$v2", "Foo")]);
}
#[test]
fn test_complex_or_join_type_projection() {
let mut schema = Schema::default();
associate_ident(&mut schema, NamespacedKeyword::new("page", "title"), 98);
add_attribute(&mut schema, 98, Attribute {
value_type: ValueType::String,
..Default::default()
});
let input = r#"[:find [?y]
:where
(or
[6 :page/title ?y]
[5 _ ?y])]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT `c00`.`?y` AS `?y`, \
`c00`.`?y_value_type_tag` AS `?y_value_type_tag` \
FROM (SELECT `datoms00`.v AS `?y`, \
10 AS `?y_value_type_tag` \
FROM `datoms` AS `datoms00` \
WHERE `datoms00`.e = 6 \
AND `datoms00`.a = 98 \
UNION \
SELECT `all_datoms01`.v AS `?y`, \
`all_datoms01`.value_type_tag AS `?y_value_type_tag` \
FROM `all_datoms` AS `all_datoms01` \
WHERE `all_datoms01`.e = 5) AS `c00` \
LIMIT 1");
assert_eq!(args, vec![]);
}
#[test]
fn test_with_without_aggregate() {
let schema = prepopulated_schema();
// Known type.
let input = r#"[:find ?x :with ?y :where [?x :foo/bar ?y]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x`, `datoms00`.v AS `?y` FROM `datoms` AS `datoms00` WHERE `datoms00`.a = 99");
assert_eq!(args, vec![]);
// Unknown type.
let input = r#"[:find ?x :with ?y :where [?x _ ?y]]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `all_datoms00`.e AS `?x`, `all_datoms00`.v AS `?y`, `all_datoms00`.value_type_tag AS `?y_value_type_tag` FROM `all_datoms` AS `all_datoms00`");
assert_eq!(args, vec![]);
}
#[test]
fn test_order_by() {
let schema = prepopulated_schema();
// Known type.
let input = r#"[:find ?x :where [?x :foo/bar ?y] :order (desc ?y)]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `datoms00`.e AS `?x`, `datoms00`.v AS `?y` \
FROM `datoms` AS `datoms00` \
WHERE `datoms00`.a = 99 \
ORDER BY `?y` DESC");
assert_eq!(args, vec![]);
// Unknown type.
let input = r#"[:find ?x :with ?y :where [?x _ ?y] :order ?y ?x]"#;
let SQLQuery { sql, args } = translate(&schema, input, None);
assert_eq!(sql, "SELECT DISTINCT `all_datoms00`.e AS `?x`, `all_datoms00`.v AS `?y`, \
`all_datoms00`.value_type_tag AS `?y_value_type_tag` \
FROM `all_datoms` AS `all_datoms00` \
ORDER BY `?y_value_type_tag` ASC, `?y` ASC, `?x` ASC");
assert_eq!(args, vec![]);
}