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Makes subqueries SPARQL 1.1 test cases run and pass

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* Fixes subqueries projection (especially in a GRAPH clause)
* Fixes CONSTRUCT behavior when a variable is not bound
pull/10/head
Tpt 5 years ago
parent 9ab42def55
commit 41c738dc7a
4 changed files with 78 additions and 52 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 78
      lib/src/sparql/eval.rs
  2. 2
      lib/src/sparql/plan.rs
  3. 44
      lib/src/sparql/plan_builder.rs
  4. 6
      lib/tests/sparql_test_cases.rs

78
lib/src/sparql/eval.rs
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@ -245,17 +245,17 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
})),
PlanNode::Join { left, right } => {
//TODO: very dumb implementation
let left_iter = self.eval_plan(&*left, from.clone());
let mut left_values = Vec::with_capacity(left_iter.size_hint().0);
let mut errors = Vec::default();
for result in left_iter {
match result {
Ok(result) => {
left_values.push(result);
let left_values = self
.eval_plan(&*left, from.clone())
.filter_map(|result| match result {
Ok(result) => Some(result),
Err(error) => {
errors.push(Err(error));
None
}
Err(error) => errors.push(Err(error)),
}
}
})
.collect::<Vec<_>>();
Box::new(JoinIterator {
left: left_values,
right_iter: self.eval_plan(&*right, from),
@ -332,17 +332,17 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}))
}
PlanNode::Sort { child, by } => {
let iter = self.eval_plan(&*child, from);
let mut values = Vec::with_capacity(iter.size_hint().0);
let mut errors = Vec::default();
for result in iter {
match result {
Ok(result) => {
values.push(result);
let mut values = self
.eval_plan(&*child, from)
.filter_map(|result| match result {
Ok(result) => Some(result),
Err(error) => {
errors.push(Err(error));
None
}
Err(error) => errors.push(Err(error)),
}
}
})
.collect::<Vec<_>>();
values.sort_unstable_by(|a, b| {
for comp in by {
match comp {
@ -374,14 +374,20 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
Box::new(self.eval_plan(&*child, from).take(*count))
}
PlanNode::Project { child, mapping } => {
Box::new(self.eval_plan(&*child, from).map(move |tuple| {
let tuple = tuple?;
let mut new_tuple = Vec::with_capacity(mapping.len());
for key in mapping {
new_tuple.push(tuple[*key]);
}
Ok(new_tuple)
}))
//TODO: use from somewhere?
Box::new(
self.eval_plan(&*child, vec![None; mapping.len()])
.map(move |tuple| {
let tuple = tuple?;
let mut output_tuple = vec![None; from.len()];
for (input_key, output_key) in mapping.iter() {
if let Some(value) = tuple[*input_key] {
put_value(*output_key, value, &mut output_tuple)
}
}
Ok(output_tuple)
}),
)
}
}
}
@ -1495,19 +1501,18 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
'a: 'b,
{
let eval = self;
let tuple_size = variables.len();
BindingsIterator::new(
variables,
Box::new(iter.map(move |values| {
let encoder = eval.dataset.encoder();
values?
.into_iter()
.map(|value| {
Ok(match value {
Some(term) => Some(encoder.decode_term(term)?),
None => None,
})
})
.collect()
let mut result = vec![None; tuple_size];
for (i, value) in values?.into_iter().enumerate() {
if let Some(term) = value {
result[i] = Some(encoder.decode_term(term)?)
}
}
Ok(result)
})),
)
}
@ -2140,9 +2145,6 @@ impl<'a, S: StoreConnection> Iterator for ConstructIterator<'a, S> {
) {
self.buffered_results
.push(decode_triple(&encoder, subject, predicate, object));
} else {
self.buffered_results.clear(); //No match, we do not output any triple for this row
break;
}
}
self.bnodes.clear(); //We do not reuse old bnodes

2
lib/src/sparql/plan.rs
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@ -66,7 +66,7 @@ pub enum PlanNode {
},
Project {
child: Box<PlanNode>,
mapping: Vec<usize>, // for each key in children the key of the returned vector (children is sliced at the vector length)
mapping: Vec<(usize, usize)>, // pairs of (variable key in child, variable key in output)
},
}

44
lib/src/sparql/plan_builder.rs
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@ -149,18 +149,38 @@ impl<'a, S: StoreConnection> PlanBuilder<'a, S> {
by: by?,
}
}
GraphPattern::Project(l, new_variables) => PlanNode::Project {
child: Box::new(self.build_for_graph_pattern(
l,
input,
&mut new_variables.clone(),
graph_name,
)?),
mapping: new_variables
.iter()
.map(|variable| variable_key(variables, variable))
.collect(),
},
GraphPattern::Project(l, new_variables) => {
let mut inner_variables = new_variables.clone();
let inner_graph_name = match graph_name {
PatternValue::Constant(graph_name) => PatternValue::Constant(graph_name),
PatternValue::Variable(graph_name) => PatternValue::Variable(
new_variables
.iter()
.enumerate()
.find(|(_, var)| *var == &variables[graph_name])
.map(|(new_key, _)| new_key)
.unwrap_or_else(|| {
inner_variables.push(Variable::default());
inner_variables.len() - 1
}),
),
};
PlanNode::Project {
child: Box::new(self.build_for_graph_pattern(
l,
input,
&mut inner_variables,
inner_graph_name,
)?),
mapping: new_variables
.iter()
.enumerate()
.map(|(new_variable, variable)| {
(new_variable, variable_key(variables, variable))
})
.collect(),
}
}
GraphPattern::Distinct(l) => PlanNode::HashDeduplicate {
child: Box::new(self.build_for_graph_pattern(l, input, variables, graph_name)?),
},

6
lib/tests/sparql_test_cases.rs
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@ -88,12 +88,14 @@ fn sparql_w3c_query_evaluation_testsuite() -> Result<()> {
let manifest_11_urls = vec![
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/bind/manifest.ttl",
//TODO "http://www.w3.org/2009/sparql/docs/tests/data-sparql11/bindings/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/construct/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/exists/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/functions/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/negation/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/project-expression/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/property-path/manifest.ttl",
"http://www.w3.org/2009/sparql/docs/tests/data-sparql11/subquery/manifest.ttl",
];
let test_blacklist = vec![
@ -126,7 +128,9 @@ fn sparql_w3c_query_evaluation_testsuite() -> Result<()> {
//Decimal precision problem
NamedNode::parse("http://www.w3.org/2009/sparql/docs/tests/data-sparql11/functions/manifest#coalesce01").unwrap(),
//Property path with unbound graph name are not supported yet
NamedNode::parse("http://www.w3.org/2009/sparql/docs/tests/data-sparql11/property-path/manifest#pp35").unwrap()
NamedNode::parse("http://www.w3.org/2009/sparql/docs/tests/data-sparql11/property-path/manifest#pp35").unwrap(),
//Aggregate in subquery (TODO when aggregates are implemented)
NamedNode::parse("http://www.w3.org/2009/sparql/docs/tests/data-sparql11/subquery/manifest#subquery08").unwrap(),
];
let tests: Result<Vec<_>> = manifest_10_urls

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