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Avoids to put in Repository StringStore temporary SPARQL execution strings

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pull/10/head
Tpt 5 years ago
parent 153eeb1033
commit 78a2d59e19
4 changed files with 216 additions and 85 deletions
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  1. 179
      lib/src/sparql/eval.rs
  2. 12
      lib/src/store/memory.rs
  3. 52
      lib/src/store/numeric_encoder.rs
  4. 28
      lib/src/store/rocksdb.rs

179
lib/src/sparql/eval.rs
Unescape View File

@ -2,6 +2,7 @@ use crate::model::BlankNode;
use crate::model::Triple; use crate::model::Triple;
use crate::sparql::model::*; use crate::sparql::model::*;
use crate::sparql::plan::*; use crate::sparql::plan::*;
use crate::store::numeric_encoder::MemoryStringStore;
use crate::store::numeric_encoder::*; use crate::store::numeric_encoder::*;
use crate::store::StoreConnection; use crate::store::StoreConnection;
use crate::Result; use crate::Result;
@ -18,8 +19,10 @@ use std::collections::BTreeMap;
use std::collections::HashSet; use std::collections::HashSet;
use std::iter::once; use std::iter::once;
use std::iter::Iterator; use std::iter::Iterator;
use std::ops::Deref;
use std::sync::Arc; use std::sync::Arc;
use std::sync::Mutex; use std::sync::Mutex;
use std::u64;
use uuid::Uuid; use uuid::Uuid;
const REGEX_SIZE_LIMIT: usize = 1_000_000; const REGEX_SIZE_LIMIT: usize = 1_000_000;
@ -28,14 +31,14 @@ type EncodedTuplesIterator<'a> = Box<dyn Iterator<Item = Result<EncodedTuple>> +
#[derive(Clone)] #[derive(Clone)]
pub struct SimpleEvaluator<S: StoreConnection> { pub struct SimpleEvaluator<S: StoreConnection> {
store: S, dataset: DatasetView<S>,
bnodes_map: Arc<Mutex<BTreeMap<u64, BlankNode>>>, bnodes_map: Arc<Mutex<BTreeMap<u64, BlankNode>>>,
} }
impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> { impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
pub fn new(store: S) -> Self { pub fn new(dataset: S) -> Self {
Self { Self {
store, dataset: DatasetView::new(dataset),
bnodes_map: Arc::new(Mutex::new(BTreeMap::default())), bnodes_map: Arc::new(Mutex::new(BTreeMap::default())),
} }
} }
@ -74,7 +77,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
'a: 'b, 'a: 'b,
{ {
Ok(QueryResult::Graph(Box::new(ConstructIterator { Ok(QueryResult::Graph(Box::new(ConstructIterator {
store: self.store.clone(), dataset: self.dataset.clone(),
iter: self.eval_plan(plan, vec![]), iter: self.eval_plan(plan, vec![]),
template: construct, template: construct,
buffered_results: Vec::default(), buffered_results: Vec::default(),
@ -87,7 +90,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
'a: 'b, 'a: 'b,
{ {
Ok(QueryResult::Graph(Box::new(DescribeIterator { Ok(QueryResult::Graph(Box::new(DescribeIterator {
store: self.store.clone(), dataset: self.dataset.clone(),
iter: self.eval_plan(plan, vec![]), iter: self.eval_plan(plan, vec![]),
quads: Vec::default(), quads: Vec::default(),
}))) })))
@ -110,7 +113,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
self.eval_plan(&*child, from) self.eval_plan(&*child, from)
.flat_map(move |tuple| match tuple { .flat_map(move |tuple| match tuple {
Ok(tuple) => { Ok(tuple) => {
let mut iter = self.store.quads_for_pattern( let mut iter = self.dataset.quads_for_pattern(
get_pattern_value(&subject, &tuple), get_pattern_value(&subject, &tuple),
get_pattern_value(&predicate, &tuple), get_pattern_value(&predicate, &tuple),
get_pattern_value(&object, &tuple), get_pattern_value(&object, &tuple),
@ -528,13 +531,13 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}, },
PlanExpression::UUID() => Some(EncodedTerm::NamedNode { PlanExpression::UUID() => Some(EncodedTerm::NamedNode {
iri_id: self iri_id: self
.store .dataset
.insert_str(&Uuid::new_v4().to_urn().to_string()) .insert_str(&Uuid::new_v4().to_urn().to_string())
.ok()?, .ok()?,
}), }),
PlanExpression::StrUUID() => Some(EncodedTerm::StringLiteral { PlanExpression::StrUUID() => Some(EncodedTerm::StringLiteral {
value_id: self value_id: self
.store .dataset
.insert_str(&Uuid::new_v4().to_simple().to_string()) .insert_str(&Uuid::new_v4().to_simple().to_string())
.ok()?, .ok()?,
}), }),
@ -638,7 +641,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
PlanExpression::BooleanCast(e) => match self.eval_expression(e, tuple)? { PlanExpression::BooleanCast(e) => match self.eval_expression(e, tuple)? {
EncodedTerm::BooleanLiteral(value) => Some(value.into()), EncodedTerm::BooleanLiteral(value) => Some(value.into()),
EncodedTerm::StringLiteral { value_id } => { EncodedTerm::StringLiteral { value_id } => {
match &*self.store.get_str(value_id).ok()? { match &*self.dataset.get_str(value_id).ok()?? {
"true" | "1" => Some(true.into()), "true" | "1" => Some(true.into()),
"false" | "0" => Some(false.into()), "false" | "0" => Some(false.into()),
_ => None, _ => None,
@ -655,7 +658,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
Some(if value { 1. as f64 } else { 0. }.into()) Some(if value { 1. as f64 } else { 0. }.into())
} }
EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::DoubleLiteral( EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::DoubleLiteral(
OrderedFloat(self.store.get_str(value_id).ok()?.parse().ok()?), OrderedFloat(self.dataset.get_str(value_id).ok()??.parse().ok()?),
)), )),
_ => None, _ => None,
}, },
@ -668,7 +671,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
Some(if value { 1. as f32 } else { 0. }.into()) Some(if value { 1. as f32 } else { 0. }.into())
} }
EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::FloatLiteral( EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::FloatLiteral(
OrderedFloat(self.store.get_str(value_id).ok()?.parse().ok()?), OrderedFloat(self.dataset.get_str(value_id).ok()??.parse().ok()?),
)), )),
_ => None, _ => None,
}, },
@ -679,7 +682,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::DecimalLiteral(value) => Some(value.to_i128()?.into()), EncodedTerm::DecimalLiteral(value) => Some(value.to_i128()?.into()),
EncodedTerm::BooleanLiteral(value) => Some(if value { 1 } else { 0 }.into()), EncodedTerm::BooleanLiteral(value) => Some(if value { 1 } else { 0 }.into()),
EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::IntegerLiteral( EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::IntegerLiteral(
self.store.get_str(value_id).ok()?.parse().ok()?, self.dataset.get_str(value_id).ok()??.parse().ok()?,
)), )),
_ => None, _ => None,
}, },
@ -697,7 +700,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
.into(), .into(),
), ),
EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::DecimalLiteral( EncodedTerm::StringLiteral { value_id } => Some(EncodedTerm::DecimalLiteral(
self.store.get_str(value_id).ok()?.parse().ok()?, self.dataset.get_str(value_id).ok()??.parse().ok()?,
)), )),
_ => None, _ => None,
}, },
@ -706,7 +709,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::DateTime(value) => Some(value.date().naive_utc().into()), //TODO: use date with timezone EncodedTerm::DateTime(value) => Some(value.date().naive_utc().into()), //TODO: use date with timezone
EncodedTerm::NaiveDateTime(value) => Some(value.date().into()), EncodedTerm::NaiveDateTime(value) => Some(value.date().into()),
EncodedTerm::StringLiteral { value_id } => { EncodedTerm::StringLiteral { value_id } => {
let value = self.store.get_str(value_id).ok()?; let value = self.dataset.get_str(value_id).ok()??;
Some(NaiveDate::parse_from_str(&value, "%Y-%m-%d").ok()?.into()) Some(NaiveDate::parse_from_str(&value, "%Y-%m-%d").ok()?.into())
} }
_ => None, _ => None,
@ -716,7 +719,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::DateTime(value) => Some(value.time().into()), EncodedTerm::DateTime(value) => Some(value.time().into()),
EncodedTerm::NaiveDateTime(value) => Some(value.time().into()), EncodedTerm::NaiveDateTime(value) => Some(value.time().into()),
EncodedTerm::StringLiteral { value_id } => { EncodedTerm::StringLiteral { value_id } => {
let value = self.store.get_str(value_id).ok()?; let value = self.dataset.get_str(value_id).ok()??;
Some(NaiveTime::parse_from_str(&value, "%H:%M:%S").ok()?.into()) Some(NaiveTime::parse_from_str(&value, "%H:%M:%S").ok()?.into())
} }
_ => None, _ => None,
@ -725,7 +728,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::DateTime(value) => Some(value.into()), EncodedTerm::DateTime(value) => Some(value.into()),
EncodedTerm::NaiveDateTime(value) => Some(value.into()), EncodedTerm::NaiveDateTime(value) => Some(value.into()),
EncodedTerm::StringLiteral { value_id } => { EncodedTerm::StringLiteral { value_id } => {
let value = self.store.get_str(value_id).ok()?; let value = self.dataset.get_str(value_id).ok()??;
Some(match DateTime::parse_from_rfc3339(&value) { Some(match DateTime::parse_from_rfc3339(&value) {
Ok(value) => value.into(), Ok(value) => value.into(),
Err(_) => NaiveDateTime::parse_from_str(&value, "%Y-%m-%dT%H:%M:%S") Err(_) => NaiveDateTime::parse_from_str(&value, "%Y-%m-%dT%H:%M:%S")
@ -762,24 +765,27 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
| EncodedTerm::LangStringLiteral { value_id, .. } | EncodedTerm::LangStringLiteral { value_id, .. }
| EncodedTerm::TypedLiteral { value_id, .. } => Some(value_id), | EncodedTerm::TypedLiteral { value_id, .. } => Some(value_id),
EncodedTerm::BooleanLiteral(value) => self EncodedTerm::BooleanLiteral(value) => self
.store .dataset
.insert_str(if value { "true" } else { "false" }) .insert_str(if value { "true" } else { "false" })
.ok(), .ok(),
EncodedTerm::FloatLiteral(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::FloatLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::DoubleLiteral(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::DoubleLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::IntegerLiteral(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::IntegerLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::DecimalLiteral(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::DecimalLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::Date(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::Date(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::NaiveDate(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::NaiveDate(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::NaiveTime(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::NaiveTime(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::DateTime(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::DateTime(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::NaiveDateTime(value) => self.store.insert_str(&value.to_string()).ok(), EncodedTerm::NaiveDateTime(value) => self.dataset.insert_str(&value.to_string()).ok(),
} }
} }
fn to_simple_string(&self, term: EncodedTerm) -> Option<S::StringType> { fn to_simple_string(
&self,
term: EncodedTerm,
) -> Option<<DatasetView<S> as StringStore>::StringType> {
if let EncodedTerm::StringLiteral { value_id } = term { if let EncodedTerm::StringLiteral { value_id } = term {
Some(self.store.get_str(value_id).ok()?) self.dataset.get_str(value_id).ok()?
} else { } else {
None None
} }
@ -793,11 +799,11 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
} }
} }
fn to_string(&self, term: EncodedTerm) -> Option<S::StringType> { fn to_string(&self, term: EncodedTerm) -> Option<<DatasetView<S> as StringStore>::StringType> {
match term { match term {
EncodedTerm::StringLiteral { value_id } EncodedTerm::StringLiteral { value_id }
| EncodedTerm::LangStringLiteral { value_id, .. } => { | EncodedTerm::LangStringLiteral { value_id, .. } => {
Some(self.store.get_str(value_id).ok()?) self.dataset.get_str(value_id).ok()?
} }
_ => None, _ => None,
} }
@ -873,11 +879,11 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
where where
'a: 'b, 'a: 'b,
{ {
let store = self.store.clone(); let dataset = self.dataset.clone();
BindingsIterator::new( BindingsIterator::new(
variables, variables,
Box::new(iter.map(move |values| { Box::new(iter.map(move |values| {
let encoder = store.encoder(); let encoder = dataset.encoder();
values? values?
.into_iter() .into_iter()
.map(|value| { .map(|value| {
@ -1108,10 +1114,105 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
} }
fn compare_str_ids(&self, a: u64, b: u64) -> Option<Ordering> { fn compare_str_ids(&self, a: u64, b: u64) -> Option<Ordering> {
if let (Ok(a), Ok(b)) = (self.store.get_str(a), self.store.get_str(b)) { Some(
Some(a.cmp(&b)) self.dataset
.get_str(a)
.ok()??
.cmp(&self.dataset.get_str(b).ok()??),
)
}
}
#[derive(Clone)]
struct DatasetView<S: StoreConnection> {
store: S,
extra: Arc<MemoryStringStore>,
}
impl<S: StoreConnection> DatasetView<S> {
fn new(store: S) -> Self {
Self {
store,
extra: Arc::new(MemoryStringStore::default()),
}
}
fn quads_for_pattern<'a>(
&'a self,
subject: Option<EncodedTerm>,
predicate: Option<EncodedTerm>,
object: Option<EncodedTerm>,
graph_name: Option<EncodedTerm>,
) -> Box<dyn Iterator<Item = Result<EncodedQuad>> + 'a> {
self.store
.quads_for_pattern(subject, predicate, object, graph_name)
}
fn encoder(&self) -> Encoder<&Self> {
Encoder::new(&self)
}
}
impl<S: StoreConnection> StringStore for DatasetView<S> {
type StringType = StringOrStoreString<S::StringType>;
fn get_str(&self, id: u64) -> Result<Option<StringOrStoreString<S::StringType>>> {
Ok(if let Some(value) = self.store.get_str(id)? {
Some(StringOrStoreString::Store(value))
} else if let Some(value) = self.extra.get_str(u64::MAX - id)? {
Some(StringOrStoreString::String(value))
} else { } else {
None None
})
}
fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
Ok(if let Some(id) = self.store.get_str_id(value)? {
Some(id)
} else {
self.extra.get_str_id(value)?.map(|id| u64::MAX - id)
})
}
fn insert_str(&self, value: &str) -> Result<u64> {
Ok(if let Some(id) = self.store.get_str_id(value)? {
id
} else {
u64::MAX - self.extra.insert_str(value)?
})
}
}
pub enum StringOrStoreString<S: Deref<Target = str> + ToString + Into<String>> {
String(String),
Store(S),
}
impl<S: Deref<Target = str> + ToString + Into<String>> Deref for StringOrStoreString<S> {
type Target = str;
fn deref(&self) -> &str {
match self {
StringOrStoreString::String(s) => &*s,
StringOrStoreString::Store(s) => &*s,
}
}
}
impl<S: Deref<Target = str> + ToString + Into<String>> ToString for StringOrStoreString<S> {
fn to_string(&self) -> String {
match self {
StringOrStoreString::String(s) => s.to_string(),
StringOrStoreString::Store(s) => s.to_string(),
}
}
}
impl<S: Deref<Target = str> + ToString + Into<String>> From<StringOrStoreString<S>> for String {
fn from(string: StringOrStoreString<S>) -> Self {
match string {
StringOrStoreString::String(s) => s,
StringOrStoreString::Store(s) => s.into(),
} }
} }
} }
@ -1360,7 +1461,7 @@ impl<'a> Iterator for HashDeduplicateIterator<'a> {
} }
struct ConstructIterator<'a, S: StoreConnection> { struct ConstructIterator<'a, S: StoreConnection> {
store: S, dataset: DatasetView<S>,
iter: EncodedTuplesIterator<'a>, iter: EncodedTuplesIterator<'a>,
template: &'a [TripleTemplate], template: &'a [TripleTemplate],
buffered_results: Vec<Result<Triple>>, buffered_results: Vec<Result<Triple>>,
@ -1379,7 +1480,7 @@ impl<'a, S: StoreConnection> Iterator for ConstructIterator<'a, S> {
Ok(tuple) => tuple, Ok(tuple) => tuple,
Err(error) => return Some(Err(error)), Err(error) => return Some(Err(error)),
}; };
let encoder = self.store.encoder(); let encoder = self.dataset.encoder();
for template in self.template { for template in self.template {
if let (Some(subject), Some(predicate), Some(object)) = ( if let (Some(subject), Some(predicate), Some(object)) = (
get_triple_template_value(&template.subject, &tuple, &mut self.bnodes), get_triple_template_value(&template.subject, &tuple, &mut self.bnodes),
@ -1431,7 +1532,7 @@ fn decode_triple<S: StringStore>(
} }
struct DescribeIterator<'a, S: StoreConnection + 'a> { struct DescribeIterator<'a, S: StoreConnection + 'a> {
store: S, dataset: DatasetView<S>,
iter: EncodedTuplesIterator<'a>, iter: EncodedTuplesIterator<'a>,
quads: Vec<Result<EncodedQuad>>, quads: Vec<Result<EncodedQuad>>,
} }
@ -1443,7 +1544,7 @@ impl<'a, S: StoreConnection> Iterator for DescribeIterator<'a, S> {
if let Some(quad) = self.quads.pop() { if let Some(quad) = self.quads.pop() {
return Some(match quad { return Some(match quad {
Ok(quad) => self Ok(quad) => self
.store .dataset
.encoder() .encoder()
.decode_quad(&quad) .decode_quad(&quad)
.map(|q| q.into_triple()), .map(|q| q.into_triple()),
@ -1457,7 +1558,7 @@ impl<'a, S: StoreConnection> Iterator for DescribeIterator<'a, S> {
for subject in tuple { for subject in tuple {
if let Some(subject) = subject { if let Some(subject) = subject {
self.quads = self self.quads = self
.store .dataset
.quads_for_pattern(Some(subject), None, None, None) .quads_for_pattern(Some(subject), None, None, None)
.collect(); .collect();
} }

12
lib/src/store/memory.rs
Unescape View File

@ -77,12 +77,16 @@ impl<'a> Store for &'a MemoryStore {
impl StringStore for MemoryStore { impl StringStore for MemoryStore {
type StringType = String; type StringType = String;
fn insert_str(&self, value: &str) -> Result<u64> { fn get_str(&self, id: u64) -> Result<Option<String>> {
self.string_store.insert_str(value) self.string_store.get_str(id)
} }
fn get_str(&self, id: u64) -> Result<String> { fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
self.string_store.get_str(id) self.string_store.get_str_id(value)
}
fn insert_str(&self, value: &str) -> Result<u64> {
self.string_store.insert_str(value)
} }
} }

52
lib/src/store/numeric_encoder.rs
Unescape View File

@ -34,8 +34,9 @@ const XSD_TIME_ID: u64 = 10;
pub trait StringStore { pub trait StringStore {
type StringType: Deref<Target = str> + ToString + Into<String>; type StringType: Deref<Target = str> + ToString + Into<String>;
fn get_str(&self, id: u64) -> Result<Option<Self::StringType>>;
fn get_str_id(&self, value: &str) -> Result<Option<u64>>;
fn insert_str(&self, value: &str) -> Result<u64>; fn insert_str(&self, value: &str) -> Result<u64>;
fn get_str(&self, id: u64) -> Result<Self::StringType>;
/// Should be called when the bytes store is created /// Should be called when the bytes store is created
fn set_first_strings(&self) -> Result<()> { fn set_first_strings(&self) -> Result<()> {
@ -67,9 +68,13 @@ impl<'a, S: StringStore> StringStore for &'a S {
(*self).insert_str(value) (*self).insert_str(value)
} }
fn get_str(&self, id: u64) -> Result<S::StringType> { fn get_str(&self, id: u64) -> Result<Option<S::StringType>> {
(*self).get_str(id) (*self).get_str(id)
} }
fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
(*self).get_str_id(value)
}
} }
pub struct MemoryStringStore { pub struct MemoryStringStore {
@ -94,21 +99,29 @@ impl StringStore for MemoryStringStore {
fn insert_str(&self, value: &str) -> Result<u64> { fn insert_str(&self, value: &str) -> Result<u64> {
let mut id2str = self.id2str.write().map_err(MutexPoisonError::from)?; let mut id2str = self.id2str.write().map_err(MutexPoisonError::from)?;
let mut str2id = self.str2id.write().map_err(MutexPoisonError::from)?; let mut str2id = self.str2id.write().map_err(MutexPoisonError::from)?;
let id = str2id.entry(value.to_string()).or_insert_with(|| { Ok(if let Some(id) = str2id.get(value) {
*id
} else {
let id = id2str.len() as u64; let id = id2str.len() as u64;
id2str.push(value.to_string()); id2str.push(value.to_string());
str2id.insert(value.to_string(), id);
id id
}); })
Ok(*id)
} }
fn get_str(&self, id: u64) -> Result<String> { fn get_str(&self, id: u64) -> Result<Option<String>> {
//TODO: avoid copy by adding a lifetime limit to get_str
let id2str = self.id2str.read().map_err(MutexPoisonError::from)?; let id2str = self.id2str.read().map_err(MutexPoisonError::from)?;
if id2str.len() as u64 <= id { Ok(if id2str.len() as u64 <= id {
Err(format_err!("value not found in the dictionary")) None
} else { } else {
Ok(id2str[id as usize].to_owned()) Some(id2str[id as usize].to_owned())
})
} }
fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
let str2id = self.str2id.read().map_err(MutexPoisonError::from)?;
Ok(str2id.get(value).cloned())
} }
} }
@ -806,26 +819,26 @@ impl<S: StringStore> Encoder<S> {
Err(format_err!("The default graph tag is not a valid term")) Err(format_err!("The default graph tag is not a valid term"))
} }
EncodedTerm::NamedNode { iri_id } => { EncodedTerm::NamedNode { iri_id } => {
Ok(NamedNode::new_from_string(self.string_store.get_str(iri_id)?).into()) Ok(NamedNode::new_from_string(self.get_str(iri_id)?).into())
} }
EncodedTerm::BlankNode(id) => Ok(BlankNode::from(id).into()), EncodedTerm::BlankNode(id) => Ok(BlankNode::from(id).into()),
EncodedTerm::StringLiteral { value_id } => { EncodedTerm::StringLiteral { value_id } => {
Ok(Literal::new_simple_literal(self.string_store.get_str(value_id)?).into()) Ok(Literal::new_simple_literal(self.get_str(value_id)?).into())
} }
EncodedTerm::LangStringLiteral { EncodedTerm::LangStringLiteral {
value_id, value_id,
language_id, language_id,
} => Ok(Literal::new_language_tagged_literal( } => Ok(Literal::new_language_tagged_literal(
self.string_store.get_str(value_id)?, self.get_str(value_id)?,
self.string_store.get_str(language_id)?, self.get_str(language_id)?,
) )
.into()), .into()),
EncodedTerm::TypedLiteral { EncodedTerm::TypedLiteral {
value_id, value_id,
datatype_id, datatype_id,
} => Ok(Literal::new_typed_literal( } => Ok(Literal::new_typed_literal(
self.string_store.get_str(value_id)?, self.get_str(value_id)?,
NamedNode::new_from_string(self.string_store.get_str(datatype_id)?), NamedNode::new_from_string(self.get_str(datatype_id)?),
) )
.into()), .into()),
EncodedTerm::BooleanLiteral(value) => Ok(Literal::from(value).into()), EncodedTerm::BooleanLiteral(value) => Ok(Literal::from(value).into()),
@ -841,6 +854,15 @@ impl<S: StringStore> Encoder<S> {
} }
} }
fn get_str(&self, id: u64) -> Result<S::StringType> {
self.string_store.get_str(id)?.ok_or_else(|| {
format_err!(
"Not able to find the string with id {} in the string store",
id
)
})
}
pub fn decode_named_or_blank_node(&self, encoded: EncodedTerm) -> Result<NamedOrBlankNode> { pub fn decode_named_or_blank_node(&self, encoded: EncodedTerm) -> Result<NamedOrBlankNode> {
match self.decode_term(encoded)? { match self.decode_term(encoded)? {
Term::NamedNode(named_node) => Ok(named_node.into()), Term::NamedNode(named_node) => Ok(named_node.into()),

28
lib/src/store/rocksdb.rs
Unescape View File

@ -132,10 +132,8 @@ impl StringStore for RocksDbStoreConnection<'_> {
type StringType = RocksString; type StringType = RocksString;
fn insert_str(&self, value: &str) -> Result<u64> { fn insert_str(&self, value: &str) -> Result<u64> {
let value = value.as_bytes(); Ok(if let Some(id) = self.get_str_id(value)? {
Ok( id
if let Some(id) = self.store.db.get_cf(self.str2id_cf, value)? {
LittleEndian::read_u64(&id)
} else { } else {
let id = self let id = self
.store .store
@ -149,17 +147,23 @@ impl StringStore for RocksDbStoreConnection<'_> {
batch.put_cf(self.str2id_cf, value, &id_bytes)?; batch.put_cf(self.str2id_cf, value, &id_bytes)?;
self.store.db.write(batch)?; self.store.db.write(batch)?;
id id
}, })
)
} }
fn get_str(&self, id: u64) -> Result<RocksString> { fn get_str(&self, id: u64) -> Result<Option<RocksString>> {
let value = self.store.db.get_cf(self.id2str_cf, &to_bytes(id))?; Ok(self
if let Some(value) = value { .store
Ok(RocksString { vec: value }) .db
} else { .get_cf(self.id2str_cf, &to_bytes(id))?
Err(format_err!("value not found in the dictionary")) .map(|v| RocksString { vec: v }))
} }
fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
Ok(self
.store
.db
.get_cf(self.str2id_cf, value.as_bytes())?
.map(|id| LittleEndian::read_u64(&id)))
} }
} }

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