NextGraph
/
oxigraph
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Activity

Use hashing for key storage

Browse Source 
Simplifies code related to string storage

Avoids to insert strings when doing lookups on Repository
pull/10/head
Tpt 5 years ago
parent 5220d0e98c
commit df8e265f0f
8 changed files with 633 additions and 597 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 218
      lib/src/sparql/eval.rs
  2. 14
      lib/src/sparql/mod.rs
  3. 41
      lib/src/sparql/plan.rs
  4. 12
      lib/src/sparql/plan_builder.rs
  5. 18
      lib/src/store/memory.rs
  6. 70
      lib/src/store/mod.rs
  7. 655
      lib/src/store/numeric_encoder.rs
  8. 74
      lib/src/store/rocksdb.rs

218
lib/src/sparql/eval.rs
Unescape View File

@ -31,7 +31,6 @@ use std::iter::{empty, once};
use std::ops::Deref;
use std::str;
use std::sync::Mutex;
use std::u64;
use uuid::Uuid;
const REGEX_SIZE_LIMIT: usize = 1_000_000;
@ -40,7 +39,7 @@ type EncodedTuplesIterator<'a> = Box<dyn Iterator<Item = Result<EncodedTuple>> +
pub struct SimpleEvaluator<S: StoreConnection> {
dataset: DatasetView<S>,
bnodes_map: Mutex<BTreeMap<u64, u128>>,
bnodes_map: Mutex<BTreeMap<u128, u128>>,
base_iri: Option<Iri<String>>,
now: DateTime<FixedOffset>,
}
@ -855,17 +854,12 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
_ => None,
}?;
let iri = self.dataset.get_str(iri_id).ok()??;
Some(if let Some(base_iri) = &self.base_iri {
EncodedTerm::NamedNode {
iri_id: self
.dataset
.insert_str(&base_iri.resolve(&iri).ok()?.into_inner())
.ok()?,
}
if let Some(base_iri) = &self.base_iri {
self.build_named_node(&base_iri.resolve(&iri).ok()?.into_inner())
} else {
Iri::parse(iri).ok()?;
EncodedTerm::NamedNode { iri_id }
})
Some(EncodedTerm::NamedNode { iri_id })
}
}
PlanExpression::BNode(id) => match id {
Some(id) => {
@ -1044,12 +1038,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
}
}
Some(EncodedTerm::StringLiteral {
value_id: self
.dataset
.insert_str(str::from_utf8(&result).ok()?)
.ok()?,
})
self.build_string_literal(str::from_utf8(&result).ok()?)
}
PlanExpression::StrEnds(arg1, arg2) => {
let (arg1, arg2, _) = self.to_argument_compatible_strings(
@ -1166,11 +1155,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
write!(&mut result, "{}S", seconds).ok()?;
}
Some(EncodedTerm::TypedLiteral {
value_id: self.dataset.insert_str(&result).ok()?,
value_id: self.build_string_id(&result)?,
datatype_id: self
.dataset
.insert_str("http://www.w3.org/2001/XMLSchema#dayTimeDuration")
.ok()?,
.build_string_id("http://www.w3.org/2001/XMLSchema#dayTimeDuration")?,
})
}
PlanExpression::Tz(e) => {
@ -1185,9 +1172,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
Some(if let Some(timezone) = timezone {
EncodedTerm::StringLiteral {
value_id: if timezone.local_minus_utc() == 0 {
self.dataset.insert_str("Z").ok()?
self.build_string_id("Z")?
} else {
self.dataset.insert_str(&timezone.to_string()).ok()?
self.build_string_id(&timezone.to_string())?
},
}
} else {
@ -1195,26 +1182,16 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
})
}
PlanExpression::Now => Some(self.now.into()),
PlanExpression::UUID => Some(EncodedTerm::NamedNode {
iri_id: self
.dataset
.insert_str(
PlanExpression::UUID => self.build_named_node(
Uuid::new_v4()
.to_urn()
.encode_lower(&mut Uuid::encode_buffer()),
)
.ok()?,
}),
PlanExpression::StrUUID => Some(EncodedTerm::StringLiteral {
value_id: self
.dataset
.insert_str(
),
PlanExpression::StrUUID => self.build_string_literal(
Uuid::new_v4()
.to_hyphenated()
.encode_lower(&mut Uuid::encode_buffer()),
)
.ok()?,
}),
),
PlanExpression::MD5(arg) => self.hash::<Md5>(arg, tuple),
PlanExpression::SHA1(arg) => self.hash::<Sha1>(arg, tuple),
PlanExpression::SHA256(arg) => self.hash::<Sha256>(arg, tuple),
@ -1253,7 +1230,6 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
None
}?;
self.dataset
.encoder()
.encode_rio_literal(rio::Literal::Typed {
value: &value,
datatype: rio::NamedNode { iri: &datatype },
@ -1296,10 +1272,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
PlanExpression::BooleanCast(e) => match self.eval_expression(e, tuple)? {
EncodedTerm::BooleanLiteral(value) => Some(value.into()),
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_boolean_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_boolean_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::DoubleCast(e) => match self.eval_expression(e, tuple)? {
@ -1310,10 +1285,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::BooleanLiteral(value) => {
Some(if value { 1. as f64 } else { 0. }.into())
}
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_double_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_double_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::FloatCast(e) => match self.eval_expression(e, tuple)? {
@ -1324,10 +1298,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::BooleanLiteral(value) => {
Some(if value { 1. as f32 } else { 0. }.into())
}
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_float_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_float_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::IntegerCast(e) => match self.eval_expression(e, tuple)? {
@ -1336,10 +1309,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::IntegerLiteral(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::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_integer_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_integer_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::DecimalCast(e) => match self.eval_expression(e, tuple)? {
@ -1355,10 +1327,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
.into(),
),
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_decimal_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_decimal_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::DateCast(e) => match self.eval_expression(e, tuple)? {
@ -1366,29 +1337,26 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::NaiveDateLiteral(value) => Some(value.into()),
EncodedTerm::DateTimeLiteral(value) => Some(value.date().into()),
EncodedTerm::NaiveDateTimeLiteral(value) => Some(value.date().into()),
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_date_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_date_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::TimeCast(e) => match self.eval_expression(e, tuple)? {
EncodedTerm::NaiveTimeLiteral(value) => Some(value.into()),
EncodedTerm::DateTimeLiteral(value) => Some(value.time().into()),
EncodedTerm::NaiveDateTimeLiteral(value) => Some(value.time().into()),
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_time_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_time_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::DateTimeCast(e) => match self.eval_expression(e, tuple)? {
EncodedTerm::DateTimeLiteral(value) => Some(value.into()),
EncodedTerm::NaiveDateTimeLiteral(value) => Some(value.into()),
EncodedTerm::StringLiteral { value_id } => self
.dataset
.encoder()
.encode_date_time_str(&*self.dataset.get_str(value_id).ok()??),
EncodedTerm::StringLiteral { value_id } => {
parse_date_time_str(&*self.dataset.get_str(value_id).ok()??)
}
_ => None,
},
PlanExpression::StringCast(e) => Some(EncodedTerm::StringLiteral {
@ -1409,7 +1377,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
}
fn to_string_id(&self, term: EncodedTerm) -> Option<u64> {
fn to_string_id(&self, term: EncodedTerm) -> Option<u128> {
match term {
EncodedTerm::DefaultGraph => None,
EncodedTerm::NamedNode { iri_id } => Some(iri_id),
@ -1417,32 +1385,25 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
EncodedTerm::StringLiteral { value_id }
| EncodedTerm::LangStringLiteral { value_id, .. }
| EncodedTerm::TypedLiteral { value_id, .. } => Some(value_id),
EncodedTerm::BooleanLiteral(value) => self
.dataset
.insert_str(if value { "true" } else { "false" })
.ok(),
EncodedTerm::FloatLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::DoubleLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::IntegerLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::DecimalLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::DateLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::NaiveDateLiteral(value) => {
self.dataset.insert_str(&value.to_string()).ok()
}
EncodedTerm::NaiveTimeLiteral(value) => {
self.dataset.insert_str(&value.to_string()).ok()
}
EncodedTerm::DateTimeLiteral(value) => self.dataset.insert_str(&value.to_string()).ok(),
EncodedTerm::NaiveDateTimeLiteral(value) => {
self.dataset.insert_str(&value.to_string()).ok()
EncodedTerm::BooleanLiteral(value) => {
self.build_string_id(if value { "true" } else { "false" })
}
EncodedTerm::FloatLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::DoubleLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::IntegerLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::DecimalLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::DateLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::NaiveDateLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::NaiveTimeLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::DateTimeLiteral(value) => self.build_string_id(&value.to_string()),
EncodedTerm::NaiveDateTimeLiteral(value) => self.build_string_id(&value.to_string()),
}
}
fn to_simple_string(
&self,
term: EncodedTerm,
) -> Option<<DatasetView<S> as StringStore>::StringType> {
) -> Option<<DatasetView<S> as StrLookup>::StrType> {
if let EncodedTerm::StringLiteral { value_id } = term {
self.dataset.get_str(value_id).ok()?
} else {
@ -1450,7 +1411,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
}
fn to_simple_string_id(&self, term: EncodedTerm) -> Option<u64> {
fn to_simple_string_id(&self, term: EncodedTerm) -> Option<u128> {
if let EncodedTerm::StringLiteral { value_id } = term {
Some(value_id)
} else {
@ -1458,7 +1419,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
}
fn to_string(&self, term: EncodedTerm) -> Option<<DatasetView<S> as StringStore>::StringType> {
fn to_string(&self, term: EncodedTerm) -> Option<<DatasetView<S> as StrLookup>::StrType> {
match term {
EncodedTerm::StringLiteral { value_id }
| EncodedTerm::LangStringLiteral { value_id, .. } => {
@ -1471,7 +1432,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
fn to_string_and_language(
&self,
term: EncodedTerm,
) -> Option<(<DatasetView<S> as StringStore>::StringType, Option<u64>)> {
) -> Option<(<DatasetView<S> as StrLookup>::StrType, Option<u128>)> {
match term {
EncodedTerm::StringLiteral { value_id } => {
Some((self.dataset.get_str(value_id).ok()??, None))
@ -1484,17 +1445,37 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
}
fn build_plain_literal(&self, value: &str, language: Option<u64>) -> Option<EncodedTerm> {
Some(if let Some(language_id) = language {
EncodedTerm::LangStringLiteral {
value_id: self.dataset.insert_str(value).ok()?,
fn build_named_node(&self, iri: &str) -> Option<EncodedTerm> {
Some(EncodedTerm::NamedNode {
iri_id: self.build_string_id(iri)?,
})
}
fn build_string_literal(&self, value: &str) -> Option<EncodedTerm> {
Some(EncodedTerm::StringLiteral {
value_id: self.build_string_id(value)?,
})
}
fn build_lang_string_literal(&self, value: &str, language_id: u128) -> Option<EncodedTerm> {
Some(EncodedTerm::LangStringLiteral {
value_id: self.build_string_id(value)?,
language_id,
})
}
fn build_plain_literal(&self, value: &str, language: Option<u128>) -> Option<EncodedTerm> {
if let Some(language_id) = language {
self.build_lang_string_literal(value, language_id)
} else {
EncodedTerm::StringLiteral {
value_id: self.dataset.insert_str(value).ok()?,
self.build_string_literal(value)
}
})
}
fn build_string_id(&self, value: &str) -> Option<u128> {
let value_id = get_str_id(value);
self.dataset.insert_str(value_id, value).ok()?;
Some(value_id)
}
fn to_argument_compatible_strings(
@ -1502,9 +1483,9 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
arg1: EncodedTerm,
arg2: EncodedTerm,
) -> Option<(
<DatasetView<S> as StringStore>::StringType,
<DatasetView<S> as StringStore>::StringType,
Option<u64>,
<DatasetView<S> as StrLookup>::StrType,
<DatasetView<S> as StrLookup>::StrType,
Option<u128>,
)> {
let (value1, language1) = self.to_string_and_language(arg1)?;
let (value2, language2) = self.to_string_and_language(arg2)?;
@ -1569,11 +1550,10 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
BindingsIterator::new(
variables,
Box::new(iter.map(move |values| {
let encoder = eval.dataset.encoder();
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)?)
result[i] = Some(eval.dataset.decode_term(term)?)
}
}
Ok(result)
@ -1803,7 +1783,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
}
}
fn compare_str_ids(&self, a: u64, b: u64) -> Option<Ordering> {
fn compare_str_ids(&self, a: u128, b: u128) -> Option<Ordering> {
Some(
self.dataset
.get_str(a)
@ -1819,9 +1799,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
) -> Option<EncodedTerm> {
let input = self.to_simple_string(self.eval_expression(arg, tuple)?)?;
let hash = hex::encode(H::new().chain(&input as &str).result());
Some(EncodedTerm::StringLiteral {
value_id: self.dataset.insert_str(&hash).ok()?,
})
self.build_string_literal(&hash)
}
}
@ -2195,15 +2173,18 @@ impl<'a, S: StoreConnection> Iterator for ConstructIterator<'a, S> {
Ok(tuple) => tuple,
Err(error) => return Some(Err(error)),
};
let encoder = self.eval.dataset.encoder();
for template in self.template {
if let (Some(subject), Some(predicate), Some(object)) = (
get_triple_template_value(&template.subject, &tuple, &mut self.bnodes),
get_triple_template_value(&template.predicate, &tuple, &mut self.bnodes),
get_triple_template_value(&template.object, &tuple, &mut self.bnodes),
) {
self.buffered_results
.push(decode_triple(&encoder, subject, predicate, object));
self.buffered_results.push(decode_triple(
&self.eval.dataset,
subject,
predicate,
object,
));
}
}
self.bnodes.clear(); //We do not reuse old bnodes
@ -2229,16 +2210,16 @@ fn get_triple_template_value(
}
}
fn decode_triple<S: StringStore>(
encoder: &Encoder<S>,
fn decode_triple(
decoder: impl Decoder,
subject: EncodedTerm,
predicate: EncodedTerm,
object: EncodedTerm,
) -> Result<Triple> {
Ok(Triple::new(
encoder.decode_named_or_blank_node(subject)?,
encoder.decode_named_node(predicate)?,
encoder.decode_term(object)?,
decoder.decode_named_or_blank_node(subject)?,
decoder.decode_named_node(predicate)?,
decoder.decode_term(object)?,
))
}
@ -2258,7 +2239,6 @@ impl<'a, S: StoreConnection> Iterator for DescribeIterator<'a, S> {
Ok(quad) => self
.eval
.dataset
.encoder()
.decode_quad(&quad)
.map(|q| q.into_triple()),
Err(error) => Err(error),
@ -2607,7 +2587,7 @@ impl Accumulator for SampleAccumulator {
struct GroupConcatAccumulator<'a, S: StoreConnection + 'a> {
eval: &'a SimpleEvaluator<S>,
concat: Option<String>,
language: Option<Option<u64>>,
language: Option<Option<u128>>,
separator: &'a str,
}

14
lib/src/sparql/mod.rs
Unescape View File

@ -64,7 +64,7 @@ impl<S: StoreConnection> SimplePreparedQuery<S> {
dataset: _,
base_iri,
} => {
let (plan, variables) = PlanBuilder::build(dataset.encoder(), &algebra)?;
let (plan, variables) = PlanBuilder::build(&dataset, &algebra)?;
SimplePreparedQueryOptions::Select {
plan,
variables,
@ -76,7 +76,7 @@ impl<S: StoreConnection> SimplePreparedQuery<S> {
dataset: _,
base_iri,
} => {
let (plan, _) = PlanBuilder::build(dataset.encoder(), &algebra)?;
let (plan, _) = PlanBuilder::build(&dataset, &algebra)?;
SimplePreparedQueryOptions::Ask {
plan,
evaluator: SimpleEvaluator::new(dataset, base_iri),
@ -88,14 +88,10 @@ impl<S: StoreConnection> SimplePreparedQuery<S> {
dataset: _,
base_iri,
} => {
let (plan, variables) = PlanBuilder::build(dataset.encoder(), &algebra)?;
let (plan, variables) = PlanBuilder::build(&dataset, &algebra)?;
SimplePreparedQueryOptions::Construct {
plan,
construct: PlanBuilder::build_graph_template(
dataset.encoder(),
&construct,
variables,
)?,
construct: PlanBuilder::build_graph_template(&dataset, &construct, variables)?,
evaluator: SimpleEvaluator::new(dataset, base_iri),
}
}
@ -104,7 +100,7 @@ impl<S: StoreConnection> SimplePreparedQuery<S> {
dataset: _,
base_iri,
} => {
let (plan, _) = PlanBuilder::build(dataset.encoder(), &algebra)?;
let (plan, _) = PlanBuilder::build(&dataset, &algebra)?;
SimplePreparedQueryOptions::Describe {
plan,
evaluator: SimpleEvaluator::new(dataset, base_iri),

41
lib/src/sparql/plan.rs
Unescape View File

@ -1,11 +1,10 @@
use crate::sparql::eval::StringOrStoreString;
use crate::store::numeric_encoder::{
EncodedQuad, EncodedTerm, Encoder, MemoryStringStore, StringStore,
EncodedQuad, EncodedTerm, MemoryStrStore, StrContainer, StrLookup,
};
use crate::store::StoreConnection;
use crate::Result;
use std::collections::BTreeSet;
use std::u64;
pub type EncodedTuple = Vec<Option<EncodedTerm>>;
@ -461,14 +460,14 @@ pub enum TripleTemplateValue {
pub struct DatasetView<S: StoreConnection> {
store: S,
extra: MemoryStringStore,
extra: MemoryStrStore,
}
impl<S: StoreConnection> DatasetView<S> {
pub fn new(store: S) -> Self {
Self {
store,
extra: MemoryStringStore::default(),
extra: MemoryStrStore::default(),
}
}
@ -482,38 +481,28 @@ impl<S: StoreConnection> DatasetView<S> {
self.store
.quads_for_pattern(subject, predicate, object, graph_name)
}
pub fn encoder(&self) -> Encoder<&Self> {
Encoder::new(&self)
}
}
impl<S: StoreConnection> StringStore for DatasetView<S> {
type StringType = StringOrStoreString<S::StringType>;
impl<S: StoreConnection> StrLookup for DatasetView<S> {
type StrType = StringOrStoreString<S::StrType>;
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)? {
fn get_str(&self, id: u128) -> Result<Option<StringOrStoreString<S::StrType>>> {
Ok(if let Some(value) = self.extra.get_str(id)? {
Some(StringOrStoreString::String(value))
} else if let Some(value) = self.store.get_str(id)? {
Some(StringOrStoreString::Store(value))
} else {
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
impl<S: StoreConnection> StrContainer for DatasetView<S> {
fn insert_str(&self, key: u128, value: &str) -> Result<()> {
if self.store.get_str(key)?.is_none() {
self.extra.insert_str(key, value)
} else {
u64::MAX - self.extra.insert_str(value)?
})
Ok(())
}
}
}

12
lib/src/sparql/plan_builder.rs
Unescape View File

@ -4,17 +4,17 @@ use crate::sparql::algebra::*;
use crate::sparql::model::*;
use crate::sparql::plan::PlanPropertyPath;
use crate::sparql::plan::*;
use crate::store::numeric_encoder::{Encoder, StringStore, ENCODED_DEFAULT_GRAPH};
use crate::store::numeric_encoder::{Encoder, ENCODED_DEFAULT_GRAPH};
use crate::Result;
use failure::format_err;
use std::collections::HashSet;
pub struct PlanBuilder<S: StringStore> {
encoder: Encoder<S>,
pub struct PlanBuilder<E: Encoder> {
encoder: E,
}
impl<S: StringStore> PlanBuilder<S> {
pub fn build(encoder: Encoder<S>, pattern: &GraphPattern) -> Result<(PlanNode, Vec<Variable>)> {
impl<E: Encoder> PlanBuilder<E> {
pub fn build(encoder: E, pattern: &GraphPattern) -> Result<(PlanNode, Vec<Variable>)> {
let mut variables = Vec::default();
let plan = PlanBuilder { encoder }.build_for_graph_pattern(
pattern,
@ -25,7 +25,7 @@ impl<S: StringStore> PlanBuilder<S> {
}
pub fn build_graph_template(
encoder: Encoder<S>,
encoder: E,
template: &[TriplePattern],
mut variables: Vec<Variable>,
) -> Result<Vec<TripleTemplate>> {

18
lib/src/store/memory.rs
Unescape View File

@ -45,7 +45,7 @@ type QuadMap<T> = BTreeMap<T, TripleMap<T>>;
#[derive(Default)]
pub struct MemoryStore {
string_store: MemoryStringStore,
str_store: MemoryStrStore,
quad_indexes: RwLock<MemoryStoreIndexes>,
}
@ -75,19 +75,17 @@ impl<'a> Store for &'a MemoryStore {
}
}
impl StringStore for MemoryStore {
type StringType = String;
impl StrLookup for MemoryStore {
type StrType = String;
fn get_str(&self, id: u64) -> Result<Option<String>> {
self.string_store.get_str(id)
fn get_str(&self, id: u128) -> Result<Option<String>> {
self.str_store.get_str(id)
}
fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
self.string_store.get_str_id(value)
}
fn insert_str(&self, value: &str) -> Result<u64> {
self.string_store.insert_str(value)
impl StrContainer for MemoryStore {
fn insert_str(&self, key: u128, value: &str) -> Result<()> {
self.str_store.insert_str(key, value)
}
}

70
lib/src/store/mod.rs
Unescape View File

@ -18,7 +18,7 @@ use rio_turtle::{NQuadsParser, NTriplesParser, TriGParser, TurtleParser};
use rio_xml::RdfXmlParser;
use std::collections::HashMap;
use std::io::BufRead;
use std::iter::{once, Iterator};
use std::iter::Iterator;
/// Defines the `Store` traits that is used to have efficient binary storage
pub trait Store {
@ -28,10 +28,13 @@ pub trait Store {
}
/// A connection to a `Store`
pub trait StoreConnection: StringStore + Sized + Clone {
pub trait StoreConnection: StrContainer + StrLookup + Sized + Clone {
fn contains(&self, quad: &EncodedQuad) -> Result<bool>;
fn insert(&mut self, quad: &EncodedQuad) -> Result<()>;
fn remove(&mut self, quad: &EncodedQuad) -> Result<()>;
fn quads_for_pattern<'a>(
&'a self,
subject: Option<EncodedTerm>,
@ -39,9 +42,6 @@ pub trait StoreConnection: StringStore + Sized + Clone {
object: Option<EncodedTerm>,
graph_name: Option<EncodedTerm>,
) -> Box<dyn Iterator<Item = Result<EncodedQuad>> + 'a>;
fn encoder(&self) -> Encoder<&Self> {
Encoder::new(&self)
}
}
/// A `RepositoryConnection` from a `StoreConnection`
@ -73,48 +73,14 @@ impl<S: StoreConnection> RepositoryConnection for StoreRepositoryConnection<S> {
where
Self: 'a,
{
let encoder = self.inner.encoder();
let subject = if let Some(subject) = subject {
match encoder.encode_named_or_blank_node(subject) {
Ok(subject) => Some(subject),
Err(error) => return Box::new(once(Err(error))),
}
} else {
None
};
let predicate = if let Some(predicate) = predicate {
match encoder.encode_named_node(predicate) {
Ok(predicate) => Some(predicate),
Err(error) => return Box::new(once(Err(error))),
}
} else {
None
};
let object = if let Some(object) = object {
match encoder.encode_term(object) {
Ok(object) => Some(object),
Err(error) => return Box::new(once(Err(error))),
}
} else {
None
};
let graph_name = if let Some(graph_name) = graph_name {
Some(if let Some(graph_name) = graph_name {
match encoder.encode_named_or_blank_node(graph_name) {
Ok(graph_name) => graph_name,
Err(error) => return Box::new(once(Err(error))),
}
} else {
EncodedTerm::DefaultGraph
})
} else {
None
};
let subject = subject.map(|s| s.into());
let predicate = predicate.map(|p| p.into());
let object = object.map(|o| o.into());
let graph_name = graph_name.map(|g| g.map_or(ENCODED_DEFAULT_GRAPH, |g| g.into()));
Box::new(
self.inner
.quads_for_pattern(subject, predicate, object, graph_name)
.map(move |quad| self.inner.encoder().decode_quad(&quad?)),
.map(move |quad| self.inner.decode_quad(&quad?)),
)
}
@ -153,16 +119,15 @@ impl<S: StoreConnection> RepositoryConnection for StoreRepositoryConnection<S> {
}
fn contains(&self, quad: &Quad) -> Result<bool> {
self.inner
.contains(&self.inner.encoder().encode_quad(quad)?)
self.inner.contains(&quad.into())
}
fn insert(&mut self, quad: &Quad) -> Result<()> {
self.inner.insert(&self.inner.encoder().encode_quad(quad)?)
self.inner.insert(&self.inner.encode_quad(quad)?)
}
fn remove(&mut self, quad: &Quad) -> Result<()> {
self.inner.remove(&self.inner.encoder().encode_quad(quad)?)
self.inner.remove(&self.inner.encode_quad(quad)?)
}
}
@ -177,15 +142,12 @@ impl<S: StoreConnection> StoreRepositoryConnection<S> {
{
let mut bnode_map = HashMap::default();
let graph_name = if let Some(graph_name) = to_graph_name {
self.inner
.encoder()
.encode_named_or_blank_node(graph_name)?
self.inner.encode_named_or_blank_node(graph_name)?
} else {
EncodedTerm::DefaultGraph
};
parser.parse_all(&mut move |t| {
self.inner
.insert(&self.inner.encoder().encode_rio_triple_in_graph(
self.inner.insert(&self.inner.encode_rio_triple_in_graph(
t,
graph_name,
&mut bnode_map,
@ -201,7 +163,7 @@ impl<S: StoreConnection> StoreRepositoryConnection<S> {
let mut bnode_map = HashMap::default();
parser.parse_all(&mut move |q| {
self.inner
.insert(&self.inner.encoder().encode_rio_quad(q, &mut bnode_map)?)
.insert(&self.inner.encode_rio_quad(q, &mut bnode_map)?)
})?;
Ok(())
}

655
lib/src/store/numeric_encoder.rs
Unescape View File

@ -8,11 +8,13 @@ use chrono::prelude::*;
use failure::format_err;
use failure::Backtrace;
use failure::Fail;
use md5::digest::Digest;
use md5::Md5;
use ordered_float::OrderedFloat;
use rand::random;
use rio_api::model as rio;
use rust_decimal::Decimal;
use std::collections::{BTreeMap, HashMap};
use std::collections::HashMap;
use std::io::Read;
use std::io::Write;
use std::mem::size_of;
@ -21,110 +23,22 @@ use std::str;
use std::sync::PoisonError;
use std::sync::RwLock;
const EMPTY_STRING_ID: u64 = 0;
const RDF_LANG_STRING_ID: u64 = 1;
const XSD_STRING_ID: u64 = 2;
const XSD_BOOLEAN_ID: u64 = 3;
const XSD_FLOAT_ID: u64 = 4;
const XSD_DOUBLE_ID: u64 = 5;
const XSD_INTEGER_ID: u64 = 6;
const XSD_DECIMAL_ID: u64 = 7;
const XSD_DATE_TIME_ID: u64 = 8;
const XSD_DATE_ID: u64 = 9;
const XSD_TIME_ID: u64 = 10;
pub trait StringStore {
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>;
const EMPTY_STRING_ID: u128 = 167830467844043968176572005485231480276;
const RDF_LANG_STRING_ID: u128 = 32982328051974780078994098831023510434;
const XSD_STRING_ID: u128 = 13800943641695357404848007879689460046;
const XSD_BOOLEAN_ID: u128 = 95660596900939122510990529520735927827;
const XSD_FLOAT_ID: u128 = 31528676610345933421445910151629221319;
const XSD_DOUBLE_ID: u128 = 55169043483206236595575765215713332225;
const XSD_INTEGER_ID: u128 = 264492531517574030670228763493245709866;
const XSD_DECIMAL_ID: u128 = 80624473126247401518595349505346497075;
const XSD_DATE_TIME_ID: u128 = 257903479904871420659358808477547675664;
const XSD_DATE_ID: u128 = 269408747350206033502011401422135526584;
const XSD_TIME_ID: u128 = 163434887606038564205926318428306098363;
/// Should be called when the bytes store is created
fn set_first_strings(&self) -> Result<()> {
if EMPTY_STRING_ID == self.insert_str("")?
&& RDF_LANG_STRING_ID == self.insert_str(rdf::LANG_STRING.as_str())?
&& XSD_STRING_ID == self.insert_str(xsd::STRING.as_str())?
&& XSD_BOOLEAN_ID == self.insert_str(xsd::BOOLEAN.as_str())?
&& XSD_FLOAT_ID == self.insert_str(xsd::FLOAT.as_str())?
&& XSD_DOUBLE_ID == self.insert_str(xsd::DOUBLE.as_str())?
&& XSD_INTEGER_ID == self.insert_str(xsd::INTEGER.as_str())?
&& XSD_DECIMAL_ID == self.insert_str(xsd::DECIMAL.as_str())?
&& XSD_DATE_TIME_ID == self.insert_str(xsd::DATE_TIME.as_str())?
&& XSD_DATE_ID == self.insert_str(xsd::DATE.as_str())?
&& XSD_TIME_ID == self.insert_str(xsd::TIME.as_str())?
{
Ok(())
} else {
Err(format_err!(
"Failed to properly setup the basic string ids in the dictionnary"
))
}
}
}
impl<'a, S: StringStore> StringStore for &'a S {
type StringType = S::StringType;
fn get_str(&self, id: u64) -> Result<Option<S::StringType>> {
(*self).get_str(id)
}
fn get_str_id(&self, value: &str) -> Result<Option<u64>> {
(*self).get_str_id(value)
}
fn insert_str(&self, value: &str) -> Result<u64> {
(*self).insert_str(value)
}
}
pub struct MemoryStringStore {
id2str: RwLock<Vec<String>>,
str2id: RwLock<BTreeMap<String, u64>>,
}
impl Default for MemoryStringStore {
fn default() -> Self {
let new = Self {
id2str: RwLock::default(),
str2id: RwLock::default(),
};
new.set_first_strings().unwrap();
new
}
}
impl StringStore for MemoryStringStore {
type StringType = 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)?;
Ok(if id2str.len() as u64 <= id {
None
} else {
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())
}
fn insert_str(&self, value: &str) -> Result<u64> {
let mut id2str = self.id2str.write().map_err(MutexPoisonError::from)?;
let mut str2id = self.str2id.write().map_err(MutexPoisonError::from)?;
Ok(if let Some(id) = str2id.get(value) {
*id
} else {
let id = id2str.len() as u64;
id2str.push(value.to_string());
str2id.insert(value.to_string(), id);
id
})
}
pub fn get_str_id(value: &str) -> u128 {
let mut id = [0 as u8; 16];
id.copy_from_slice(&Md5::new().chain(value).result());
u128::from_le_bytes(id)
}
const TYPE_DEFAULT_GRAPH_ID: u8 = 0;
@ -183,11 +97,11 @@ pub const ENCODED_XSD_DATE_TIME_NAMED_NODE: EncodedTerm = EncodedTerm::NamedNode
#[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone, Copy, Hash)]
pub enum EncodedTerm {
DefaultGraph,
NamedNode { iri_id: u64 },
NamedNode { iri_id: u128 },
BlankNode { id: u128 },
StringLiteral { value_id: u64 },
LangStringLiteral { value_id: u64, language_id: u64 },
TypedLiteral { value_id: u64, datatype_id: u64 },
StringLiteral { value_id: u128 },
LangStringLiteral { value_id: u128, language_id: u128 },
TypedLiteral { value_id: u128, datatype_id: u128 },
BooleanLiteral(bool),
FloatLiteral(OrderedFloat<f32>),
DoubleLiteral(OrderedFloat<f64>),
@ -363,12 +277,110 @@ impl From<NaiveDateTime> for EncodedTerm {
}
}
impl From<BlankNode> for EncodedTerm {
fn from(node: BlankNode) -> Self {
impl From<&NamedNode> for EncodedTerm {
fn from(node: &NamedNode) -> Self {
rio::NamedNode::from(node).into()
}
}
impl<'a> From<rio::NamedNode<'a>> for EncodedTerm {
fn from(node: rio::NamedNode<'a>) -> Self {
EncodedTerm::NamedNode {
iri_id: get_str_id(node.iri),
}
}
}
impl From<&BlankNode> for EncodedTerm {
fn from(node: &BlankNode) -> Self {
EncodedTerm::BlankNode { id: node.id() }
}
}
impl From<&Literal> for EncodedTerm {
fn from(literal: &Literal) -> Self {
rio::Literal::from(literal).into()
}
}
impl<'a> From<rio::Literal<'a>> for EncodedTerm {
fn from(literal: rio::Literal<'a>) -> Self {
match literal {
rio::Literal::Simple { value } => EncodedTerm::StringLiteral {
value_id: get_str_id(value),
},
rio::Literal::LanguageTaggedString { value, language } => {
EncodedTerm::LangStringLiteral {
value_id: get_str_id(value),
language_id: if language.bytes().all(|b| b.is_ascii_lowercase()) {
get_str_id(language)
} else {
get_str_id(&language.to_ascii_lowercase())
},
}
}
rio::Literal::Typed { value, datatype } => {
match match datatype.iri {
"http://www.w3.org/2001/XMLSchema#boolean" => parse_boolean_str(value),
"http://www.w3.org/2001/XMLSchema#string" => Some(EncodedTerm::StringLiteral {
value_id: get_str_id(value),
}),
"http://www.w3.org/2001/XMLSchema#float" => parse_float_str(value),
"http://www.w3.org/2001/XMLSchema#double" => parse_double_str(value),
"http://www.w3.org/2001/XMLSchema#integer"
| "http://www.w3.org/2001/XMLSchema#byte"
| "http://www.w3.org/2001/XMLSchema#short"
| "http://www.w3.org/2001/XMLSchema#int"
| "http://www.w3.org/2001/XMLSchema#long"
| "http://www.w3.org/2001/XMLSchema#unsignedByte"
| "http://www.w3.org/2001/XMLSchema#unsignedShort"
| "http://www.w3.org/2001/XMLSchema#unsignedInt"
| "http://www.w3.org/2001/XMLSchema#unsignedLong"
| "http://www.w3.org/2001/XMLSchema#positiveInteger"
| "http://www.w3.org/2001/XMLSchema#negativeInteger"
| "http://www.w3.org/2001/XMLSchema#nonPositiveInteger"
| "http://www.w3.org/2001/XMLSchema#nonNegativeInteger" => {
parse_integer_str(value)
}
"http://www.w3.org/2001/XMLSchema#decimal" => parse_decimal_str(value),
"http://www.w3.org/2001/XMLSchema#date" => parse_date_str(value),
"http://www.w3.org/2001/XMLSchema#time" => parse_time_str(value),
"http://www.w3.org/2001/XMLSchema#dateTime"
| "http://www.w3.org/2001/XMLSchema#dateTimeStamp" => {
parse_date_time_str(value)
}
_ => None,
} {
Some(v) => v,
None => EncodedTerm::TypedLiteral {
value_id: get_str_id(value),
datatype_id: get_str_id(datatype.iri),
},
}
}
}
}
}
impl From<&NamedOrBlankNode> for EncodedTerm {
fn from(node: &NamedOrBlankNode) -> Self {
match node {
NamedOrBlankNode::NamedNode(node) => node.into(),
NamedOrBlankNode::BlankNode(node) => node.into(),
}
}
}
impl From<&Term> for EncodedTerm {
fn from(node: &Term) -> Self {
match node {
Term::NamedNode(node) => node.into(),
Term::BlankNode(node) => node.into(),
Term::Literal(literal) => literal.into(),
}
}
}
#[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone, Hash)]
pub struct EncodedQuad {
pub subject: EncodedTerm,
@ -393,6 +405,20 @@ impl EncodedQuad {
}
}
impl From<&Quad> for EncodedQuad {
fn from(quad: &Quad) -> Self {
Self {
subject: quad.subject().into(),
predicate: quad.predicate().into(),
object: quad.object().into(),
graph_name: quad
.graph_name()
.as_ref()
.map_or(ENCODED_DEFAULT_GRAPH, |g| g.into()),
}
}
}
pub trait TermReader {
fn read_term(&mut self) -> Result<EncodedTerm>;
fn read_spog_quad(&mut self) -> Result<EncodedQuad>;
@ -408,21 +434,21 @@ impl<R: Read> TermReader for R {
match self.read_u8()? {
TYPE_DEFAULT_GRAPH_ID => Ok(EncodedTerm::DefaultGraph),
TYPE_NAMED_NODE_ID => Ok(EncodedTerm::NamedNode {
iri_id: self.read_u64::<LittleEndian>()?,
iri_id: self.read_u128::<LittleEndian>()?,
}),
TYPE_BLANK_NODE_ID => Ok(EncodedTerm::BlankNode {
id: self.read_u128::<LittleEndian>()?,
}),
TYPE_LANG_STRING_LITERAL_ID => Ok(EncodedTerm::LangStringLiteral {
language_id: self.read_u64::<LittleEndian>()?,
value_id: self.read_u64::<LittleEndian>()?,
language_id: self.read_u128::<LittleEndian>()?,
value_id: self.read_u128::<LittleEndian>()?,
}),
TYPE_TYPED_LITERAL_ID => Ok(EncodedTerm::TypedLiteral {
datatype_id: self.read_u64::<LittleEndian>()?,
value_id: self.read_u64::<LittleEndian>()?,
datatype_id: self.read_u128::<LittleEndian>()?,
value_id: self.read_u128::<LittleEndian>()?,
}),
TYPE_STRING_LITERAL => Ok(EncodedTerm::StringLiteral {
value_id: self.read_u64::<LittleEndian>()?,
value_id: self.read_u128::<LittleEndian>()?,
}),
TYPE_BOOLEAN_LITERAL_TRUE => Ok(EncodedTerm::BooleanLiteral(true)),
TYPE_BOOLEAN_LITERAL_FALSE => Ok(EncodedTerm::BooleanLiteral(false)),
@ -556,7 +582,7 @@ impl<R: Read> TermReader for R {
}
}
pub const WRITTEN_TERM_MAX_SIZE: usize = size_of::<u8>() + 2 * size_of::<u64>();
pub const WRITTEN_TERM_MAX_SIZE: usize = size_of::<u8>() + 2 * size_of::<u128>();
pub trait TermWriter {
fn write_term(&mut self, term: EncodedTerm) -> Result<()>;
@ -573,24 +599,24 @@ impl<W: Write> TermWriter for W {
self.write_u8(term.type_id())?;
match term {
EncodedTerm::DefaultGraph => {}
EncodedTerm::NamedNode { iri_id } => self.write_u64::<LittleEndian>(iri_id)?,
EncodedTerm::NamedNode { iri_id } => self.write_u128::<LittleEndian>(iri_id)?,
EncodedTerm::BlankNode { id } => self.write_u128::<LittleEndian>(id)?,
EncodedTerm::StringLiteral { value_id } => {
self.write_u64::<LittleEndian>(value_id)?;
self.write_u128::<LittleEndian>(value_id)?;
}
EncodedTerm::LangStringLiteral {
value_id,
language_id,
} => {
self.write_u64::<LittleEndian>(language_id)?;
self.write_u64::<LittleEndian>(value_id)?;
self.write_u128::<LittleEndian>(language_id)?;
self.write_u128::<LittleEndian>(value_id)?;
}
EncodedTerm::TypedLiteral {
value_id,
datatype_id,
} => {
self.write_u64::<LittleEndian>(datatype_id)?;
self.write_u64::<LittleEndian>(value_id)?;
self.write_u128::<LittleEndian>(datatype_id)?;
self.write_u128::<LittleEndian>(value_id)?;
}
EncodedTerm::BooleanLiteral(_) => {}
EncodedTerm::FloatLiteral(value) => self.write_f32::<LittleEndian>(*value)?,
@ -670,37 +696,160 @@ impl<W: Write> TermWriter for W {
}
}
pub struct Encoder<S: StringStore> {
string_store: S,
pub trait StrLookup {
type StrType: Deref<Target = str> + ToString + Into<String>;
fn get_str(&self, id: u128) -> Result<Option<Self::StrType>>;
}
pub trait StrContainer {
fn insert_str(&self, key: u128, value: &str) -> Result<()>;
/// Should be called when the bytes store is created
fn set_first_strings(&self) -> Result<()> {
self.insert_str(EMPTY_STRING_ID, "")?;
self.insert_str(RDF_LANG_STRING_ID, rdf::LANG_STRING.as_str())?;
self.insert_str(XSD_STRING_ID, xsd::STRING.as_str())?;
self.insert_str(XSD_BOOLEAN_ID, xsd::BOOLEAN.as_str())?;
self.insert_str(XSD_FLOAT_ID, xsd::FLOAT.as_str())?;
self.insert_str(XSD_DOUBLE_ID, xsd::DOUBLE.as_str())?;
self.insert_str(XSD_INTEGER_ID, xsd::INTEGER.as_str())?;
self.insert_str(XSD_DECIMAL_ID, xsd::DECIMAL.as_str())?;
self.insert_str(XSD_DATE_TIME_ID, xsd::DATE_TIME.as_str())?;
self.insert_str(XSD_DATE_ID, xsd::DATE.as_str())?;
self.insert_str(XSD_TIME_ID, xsd::TIME.as_str())?;
Ok(())
}
}
impl<'a, S: StrLookup + 'a> StrLookup for &'a S {
type StrType = S::StrType;
fn get_str(&self, id: u128) -> Result<Option<S::StrType>> {
(*self).get_str(id)
}
}
impl<'a, S: StrContainer + 'a> StrContainer for &'a S {
fn insert_str(&self, key: u128, value: &str) -> Result<()> {
(*self).insert_str(key, value)
}
}
pub struct MemoryStrStore {
id2str: RwLock<HashMap<u128, String>>,
}
impl Default for MemoryStrStore {
fn default() -> Self {
let new = Self {
id2str: RwLock::default(),
};
new.set_first_strings().unwrap();
new
}
}
impl StrLookup for MemoryStrStore {
type StrType = String;
fn get_str(&self, id: u128) -> Result<Option<String>> {
//TODO: avoid copy by adding a lifetime limit to get_str
Ok(self
.id2str
.read()
.map_err(MutexPoisonError::from)?
.get(&id)
.cloned())
}
}
impl StrContainer for MemoryStrStore {
fn insert_str(&self, key: u128, value: &str) -> Result<()> {
let mut id2str = self.id2str.write().map_err(MutexPoisonError::from)?;
if !id2str.contains_key(&key) {
id2str.insert(key, value.to_owned());
}
Ok(())
}
}
impl<S: StringStore> Encoder<S> {
pub fn new(string_store: S) -> Self {
Self { string_store }
pub trait Encoder {
fn encode_named_node(&self, named_node: &NamedNode) -> Result<EncodedTerm>;
fn encode_blank_node(&self, blank_node: &BlankNode) -> Result<EncodedTerm>;
fn encode_literal(&self, literal: &Literal) -> Result<EncodedTerm>;
fn encode_named_or_blank_node(&self, term: &NamedOrBlankNode) -> Result<EncodedTerm>;
fn encode_term(&self, term: &Term) -> Result<EncodedTerm>;
fn encode_quad(&self, quad: &Quad) -> Result<EncodedQuad>;
fn encode_triple_in_graph(
&self,
triple: &Triple,
graph_name: EncodedTerm,
) -> Result<EncodedQuad>;
fn encode_rio_named_node(&self, named_node: rio::NamedNode) -> Result<EncodedTerm>;
fn encode_rio_blank_node(
&self,
blank_node: rio::BlankNode,
bnodes_map: &mut HashMap<String, u128>,
) -> Result<EncodedTerm>;
fn encode_rio_literal(&self, literal: rio::Literal) -> Result<EncodedTerm>;
fn encode_rio_named_or_blank_node(
&self,
term: rio::NamedOrBlankNode,
bnodes_map: &mut HashMap<String, u128>,
) -> Result<EncodedTerm>;
fn encode_rio_term(
&self,
term: rio::Term,
bnodes_map: &mut HashMap<String, u128>,
) -> Result<EncodedTerm>;
fn encode_rio_quad(
&self,
quad: rio::Quad,
bnodes_map: &mut HashMap<String, u128>,
) -> Result<EncodedQuad>;
fn encode_rio_triple_in_graph(
&self,
triple: rio::Triple,
graph_name: EncodedTerm,
bnodes_map: &mut HashMap<String, u128>,
) -> Result<EncodedQuad>;
}
pub fn encode_named_node(&self, named_node: &NamedNode) -> Result<EncodedTerm> {
impl<S: StrContainer> Encoder for S {
fn encode_named_node(&self, named_node: &NamedNode) -> Result<EncodedTerm> {
self.encode_rio_named_node(named_node.into())
}
pub fn encode_blank_node(&self, blank_node: &BlankNode) -> Result<EncodedTerm> {
Ok(EncodedTerm::BlankNode {
id: blank_node.id(),
})
fn encode_blank_node(&self, blank_node: &BlankNode) -> Result<EncodedTerm> {
Ok(blank_node.into())
}
pub fn encode_literal(&self, literal: &Literal) -> Result<EncodedTerm> {
fn encode_literal(&self, literal: &Literal) -> Result<EncodedTerm> {
self.encode_rio_literal(literal.into())
}
pub fn encode_named_or_blank_node(&self, term: &NamedOrBlankNode) -> Result<EncodedTerm> {
fn encode_named_or_blank_node(&self, term: &NamedOrBlankNode) -> Result<EncodedTerm> {
match term {
NamedOrBlankNode::NamedNode(named_node) => self.encode_named_node(named_node),
NamedOrBlankNode::BlankNode(blank_node) => self.encode_blank_node(blank_node),
}
}
pub fn encode_term(&self, term: &Term) -> Result<EncodedTerm> {
fn encode_term(&self, term: &Term) -> Result<EncodedTerm> {
match term {
Term::NamedNode(named_node) => self.encode_named_node(named_node),
Term::BlankNode(blank_node) => self.encode_blank_node(blank_node),
@ -708,7 +857,7 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn encode_quad(&self, quad: &Quad) -> Result<EncodedQuad> {
fn encode_quad(&self, quad: &Quad) -> Result<EncodedQuad> {
Ok(EncodedQuad {
subject: self.encode_named_or_blank_node(quad.subject())?,
predicate: self.encode_named_node(quad.predicate())?,
@ -720,7 +869,7 @@ impl<S: StringStore> Encoder<S> {
})
}
pub fn encode_triple_in_graph(
fn encode_triple_in_graph(
&self,
triple: &Triple,
graph_name: EncodedTerm,
@ -733,13 +882,13 @@ impl<S: StringStore> Encoder<S> {
})
}
pub fn encode_rio_named_node(&self, named_node: rio::NamedNode) -> Result<EncodedTerm> {
Ok(EncodedTerm::NamedNode {
iri_id: self.string_store.insert_str(named_node.iri)?,
})
fn encode_rio_named_node(&self, named_node: rio::NamedNode) -> Result<EncodedTerm> {
let iri_id = get_str_id(named_node.iri);
self.insert_str(iri_id, named_node.iri)?;
Ok(EncodedTerm::NamedNode { iri_id })
}
pub fn encode_rio_blank_node(
fn encode_rio_blank_node(
&self,
blank_node: rio::BlankNode,
bnodes_map: &mut HashMap<String, u128>,
@ -753,29 +902,43 @@ impl<S: StringStore> Encoder<S> {
})
}
pub fn encode_rio_literal(&self, literal: rio::Literal) -> Result<EncodedTerm> {
fn encode_rio_literal(&self, literal: rio::Literal) -> Result<EncodedTerm> {
Ok(match literal {
rio::Literal::Simple { value } => EncodedTerm::StringLiteral {
value_id: self.string_store.insert_str(value)?,
},
rio::Literal::Simple { value } => {
let value_id = get_str_id(value);
self.insert_str(value_id, value)?;
EncodedTerm::StringLiteral { value_id }
}
rio::Literal::LanguageTaggedString { value, language } => {
EncodedTerm::LangStringLiteral {
value_id: self.string_store.insert_str(value)?,
language_id: if language.bytes().all(|b| b.is_ascii_lowercase()) {
self.string_store.insert_str(language)
let value_id = get_str_id(value);
self.insert_str(value_id, value)?;
let language_id = if language.bytes().all(|b| b.is_ascii_lowercase()) {
let language_id = get_str_id(language);
self.insert_str(language_id, language)?;
language_id
} else {
self.string_store.insert_str(&language.to_ascii_lowercase())
}?,
let language = language.to_ascii_lowercase();
let language_id = get_str_id(&language);
self.insert_str(language_id, &language)?;
language_id
};
EncodedTerm::LangStringLiteral {
value_id,
language_id,
}
}
rio::Literal::Typed { value, datatype } => {
match match datatype.iri {
"http://www.w3.org/2001/XMLSchema#boolean" => self.encode_boolean_str(value),
"http://www.w3.org/2001/XMLSchema#string" => Some(EncodedTerm::StringLiteral {
value_id: self.string_store.insert_str(value)?,
}),
"http://www.w3.org/2001/XMLSchema#float" => self.encode_float_str(value),
"http://www.w3.org/2001/XMLSchema#double" => self.encode_double_str(value),
"http://www.w3.org/2001/XMLSchema#boolean" => parse_boolean_str(value),
"http://www.w3.org/2001/XMLSchema#string" => {
let value_id = get_str_id(value);
self.insert_str(value_id, value)?;
Some(EncodedTerm::StringLiteral { value_id })
}
"http://www.w3.org/2001/XMLSchema#float" => parse_float_str(value),
"http://www.w3.org/2001/XMLSchema#double" => parse_double_str(value),
"http://www.w3.org/2001/XMLSchema#integer"
| "http://www.w3.org/2001/XMLSchema#byte"
| "http://www.w3.org/2001/XMLSchema#short"
@ -789,28 +952,34 @@ impl<S: StringStore> Encoder<S> {
| "http://www.w3.org/2001/XMLSchema#negativeInteger"
| "http://www.w3.org/2001/XMLSchema#nonPositiveInteger"
| "http://www.w3.org/2001/XMLSchema#nonNegativeInteger" => {
self.encode_integer_str(value)
parse_integer_str(value)
}
"http://www.w3.org/2001/XMLSchema#decimal" => self.encode_decimal_str(value),
"http://www.w3.org/2001/XMLSchema#date" => self.encode_date_str(value),
"http://www.w3.org/2001/XMLSchema#time" => self.encode_time_str(value),
"http://www.w3.org/2001/XMLSchema#decimal" => parse_decimal_str(value),
"http://www.w3.org/2001/XMLSchema#date" => parse_date_str(value),
"http://www.w3.org/2001/XMLSchema#time" => parse_time_str(value),
"http://www.w3.org/2001/XMLSchema#dateTime"
| "http://www.w3.org/2001/XMLSchema#dateTimeStamp" => {
self.encode_date_time_str(value)
parse_date_time_str(value)
}
_ => None,
} {
Some(v) => v,
None => EncodedTerm::TypedLiteral {
value_id: self.string_store.insert_str(value)?,
datatype_id: self.string_store.insert_str(datatype.iri)?,
},
None => {
let value_id = get_str_id(value);
self.insert_str(value_id, value)?;
let datatype_id = get_str_id(datatype.iri);
self.insert_str(datatype_id, datatype.iri)?;
EncodedTerm::TypedLiteral {
value_id,
datatype_id,
}
}
}
}
})
}
pub fn encode_rio_named_or_blank_node(
fn encode_rio_named_or_blank_node(
&self,
term: rio::NamedOrBlankNode,
bnodes_map: &mut HashMap<String, u128>,
@ -823,7 +992,7 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn encode_rio_term(
fn encode_rio_term(
&self,
term: rio::Term,
bnodes_map: &mut HashMap<String, u128>,
@ -835,7 +1004,7 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn encode_rio_quad(
fn encode_rio_quad(
&self,
quad: rio::Quad,
bnodes_map: &mut HashMap<String, u128>,
@ -851,7 +1020,7 @@ impl<S: StringStore> Encoder<S> {
})
}
pub fn encode_rio_triple_in_graph(
fn encode_rio_triple_in_graph(
&self,
triple: rio::Triple,
graph_name: EncodedTerm,
@ -864,8 +1033,9 @@ impl<S: StringStore> Encoder<S> {
graph_name,
})
}
}
pub fn encode_boolean_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_boolean_str(value: &str) -> Option<EncodedTerm> {
match value {
"true" | "1" => Some(EncodedTerm::BooleanLiteral(true)),
"false" | "0" => Some(EncodedTerm::BooleanLiteral(false)),
@ -873,29 +1043,29 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn encode_float_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_float_str(value: &str) -> Option<EncodedTerm> {
value
.parse()
.map(|value| EncodedTerm::FloatLiteral(OrderedFloat(value)))
.ok()
}
pub fn encode_double_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_double_str(value: &str) -> Option<EncodedTerm> {
value
.parse()
.map(|value| EncodedTerm::DoubleLiteral(OrderedFloat(value)))
.ok()
}
pub fn encode_integer_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_integer_str(value: &str) -> Option<EncodedTerm> {
value.parse().map(EncodedTerm::IntegerLiteral).ok()
}
pub fn encode_decimal_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_decimal_str(value: &str) -> Option<EncodedTerm> {
value.parse().map(EncodedTerm::DecimalLiteral).ok()
}
pub fn encode_date_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_date_str(value: &str) -> Option<EncodedTerm> {
let mut parsed = Parsed::new();
match parse(&mut parsed, &value, StrftimeItems::new("%Y-%m-%d%:z")).and_then(|_| {
Ok(Date::from_utc(
@ -916,13 +1086,13 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn encode_time_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_time_str(value: &str) -> Option<EncodedTerm> {
NaiveTime::parse_from_str(&value, "%H:%M:%S")
.map(EncodedTerm::NaiveTimeLiteral)
.ok()
}
pub fn encode_date_time_str(&self, value: &str) -> Option<EncodedTerm> {
pub fn parse_date_time_str(value: &str) -> Option<EncodedTerm> {
match DateTime::parse_from_rfc3339(&value) {
Ok(value) => Some(EncodedTerm::DateTimeLiteral(value)),
Err(_) => NaiveDateTime::parse_from_str(&value, "%Y-%m-%dT%H:%M:%S")
@ -931,57 +1101,10 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn decode_term(&self, encoded: EncodedTerm) -> Result<Term> {
match encoded {
EncodedTerm::DefaultGraph => {
Err(format_err!("The default graph tag is not a valid term"))
}
EncodedTerm::NamedNode { iri_id } => {
Ok(NamedNode::new_from_string(self.get_str(iri_id)?).into())
}
EncodedTerm::BlankNode { id } => Ok(BlankNode::new_from_unique_id(id).into()),
EncodedTerm::StringLiteral { value_id } => {
Ok(Literal::new_simple_literal(self.get_str(value_id)?).into())
}
EncodedTerm::LangStringLiteral {
value_id,
language_id,
} => Ok(Literal::new_language_tagged_literal(
self.get_str(value_id)?,
self.get_str(language_id)?,
)
.into()),
EncodedTerm::TypedLiteral {
value_id,
datatype_id,
} => Ok(Literal::new_typed_literal(
self.get_str(value_id)?,
NamedNode::new_from_string(self.get_str(datatype_id)?),
)
.into()),
EncodedTerm::BooleanLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::FloatLiteral(value) => Ok(Literal::from(*value).into()),
EncodedTerm::DoubleLiteral(value) => Ok(Literal::from(*value).into()),
EncodedTerm::IntegerLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::DecimalLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::DateLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::NaiveDateLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::NaiveTimeLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::DateTimeLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::NaiveDateTimeLiteral(value) => Ok(Literal::from(value).into()),
}
}
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 trait Decoder {
fn decode_term(&self, encoded: EncodedTerm) -> Result<Term>;
pub fn decode_named_or_blank_node(&self, encoded: EncodedTerm) -> Result<NamedOrBlankNode> {
fn decode_named_or_blank_node(&self, encoded: EncodedTerm) -> Result<NamedOrBlankNode> {
match self.decode_term(encoded)? {
Term::NamedNode(named_node) => Ok(named_node.into()),
Term::BlankNode(blank_node) => Ok(blank_node.into()),
@ -991,7 +1114,7 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn decode_named_node(&self, encoded: EncodedTerm) -> Result<NamedNode> {
fn decode_named_node(&self, encoded: EncodedTerm) -> Result<NamedNode> {
match self.decode_term(encoded)? {
Term::NamedNode(named_node) => Ok(named_node),
Term::BlankNode(_) => Err(format_err!(
@ -1003,7 +1126,7 @@ impl<S: StringStore> Encoder<S> {
}
}
pub fn decode_triple(&self, encoded: &EncodedQuad) -> Result<Triple> {
fn decode_triple(&self, encoded: &EncodedQuad) -> Result<Triple> {
Ok(Triple::new(
self.decode_named_or_blank_node(encoded.subject)?,
self.decode_named_node(encoded.predicate)?,
@ -1011,7 +1134,7 @@ impl<S: StringStore> Encoder<S> {
))
}
pub fn decode_quad(&self, encoded: &EncodedQuad) -> Result<Quad> {
fn decode_quad(&self, encoded: &EncodedQuad) -> Result<Quad> {
Ok(Quad::new(
self.decode_named_or_blank_node(encoded.subject)?,
self.decode_named_node(encoded.predicate)?,
@ -1024,14 +1147,58 @@ impl<S: StringStore> Encoder<S> {
}
}
impl<S: StringStore + Default> Default for Encoder<S> {
fn default() -> Self {
Self {
string_store: S::default(),
impl<S: StrLookup> Decoder for S {
fn decode_term(&self, encoded: EncodedTerm) -> Result<Term> {
match encoded {
EncodedTerm::DefaultGraph => {
Err(format_err!("The default graph tag is not a valid term"))
}
EncodedTerm::NamedNode { iri_id } => {
Ok(NamedNode::new_from_string(get_required_str(self, iri_id)?).into())
}
EncodedTerm::BlankNode { id } => Ok(BlankNode::new_from_unique_id(id).into()),
EncodedTerm::StringLiteral { value_id } => {
Ok(Literal::new_simple_literal(get_required_str(self, value_id)?).into())
}
EncodedTerm::LangStringLiteral {
value_id,
language_id,
} => Ok(Literal::new_language_tagged_literal(
get_required_str(self, value_id)?,
get_required_str(self, language_id)?,
)
.into()),
EncodedTerm::TypedLiteral {
value_id,
datatype_id,
} => Ok(Literal::new_typed_literal(
get_required_str(self, value_id)?,
NamedNode::new_from_string(get_required_str(self, datatype_id)?),
)
.into()),
EncodedTerm::BooleanLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::FloatLiteral(value) => Ok(Literal::from(*value).into()),
EncodedTerm::DoubleLiteral(value) => Ok(Literal::from(*value).into()),
EncodedTerm::IntegerLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::DecimalLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::DateLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::NaiveDateLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::NaiveTimeLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::DateTimeLiteral(value) => Ok(Literal::from(value).into()),
EncodedTerm::NaiveDateTimeLiteral(value) => Ok(Literal::from(value).into()),
}
}
}
fn get_required_str<S: StrLookup>(lookup: S, id: u128) -> Result<S::StrType> {
lookup.get_str(id)?.ok_or_else(|| {
format_err!(
"Not able to find the string with id {} in the string store",
id
)
})
}
#[derive(Debug, Fail)]
#[fail(display = "Mutex Mutex was poisoned")]
pub struct MutexPoisonError {
@ -1048,7 +1215,7 @@ impl<T> From<PoisonError<T>> for MutexPoisonError {
#[test]
fn test_encoding() {
let encoder: Encoder<MemoryStringStore> = Encoder::default();
let store = MemoryStrStore::default();
let terms: Vec<Term> = vec![
NamedNode::new_from_string("http://foo.com").into(),
NamedNode::new_from_string("http://bar.com").into(),
@ -1063,14 +1230,8 @@ fn test_encoding() {
Literal::new_language_tagged_literal("foo", "FR").into(),
];
for term in terms {
let encoded = encoder.encode_term(&term).unwrap();
assert_eq!(term, encoder.decode_term(encoded).unwrap())
}
let encoded = store.encode_term(&term).unwrap();
assert_eq!(term, store.decode_term(encoded).unwrap());
assert_eq!(encoded, EncodedTerm::from(&term));
}
#[test]
fn test_encoded_term_size() {
use std::mem::size_of;
assert_eq!(size_of::<EncodedTerm>(), 24);
}

74
lib/src/store/rocksdb.rs
Unescape View File

@ -1,8 +1,6 @@
use crate::store::numeric_encoder::*;
use crate::store::{Store, StoreConnection, StoreRepositoryConnection};
use crate::{Repository, Result};
use byteorder::ByteOrder;
use byteorder::LittleEndian;
use failure::format_err;
use rocksdb::ColumnFamily;
use rocksdb::DBCompactionStyle;
@ -16,7 +14,6 @@ use std::iter::{empty, once};
use std::ops::Deref;
use std::path::Path;
use std::str;
use std::sync::Mutex;
/// `Repository` implementation based on the [RocksDB](https://rocksdb.org/) key-value store
///
@ -55,7 +52,6 @@ pub struct RocksDbRepository {
pub type RocksDbRepositoryConnection<'a> = StoreRepositoryConnection<RocksDbStoreConnection<'a>>;
const ID2STR_CF: &str = "id2str";
const STR2ID_CF: &str = "id2str";
const SPOG_CF: &str = "spog";
const POSG_CF: &str = "posg";
const OSPG_CF: &str = "ospg";
@ -67,13 +63,12 @@ const EMPTY_BUF: [u8; 0] = [0 as u8; 0];
//TODO: indexes for the default graph and indexes for the named graphs (no more Optional and space saving)
const COLUMN_FAMILIES: [&str; 8] = [
ID2STR_CF, STR2ID_CF, SPOG_CF, POSG_CF, OSPG_CF, GSPO_CF, GPOS_CF, GOSP_CF,
const COLUMN_FAMILIES: [&str; 7] = [
ID2STR_CF, SPOG_CF, POSG_CF, OSPG_CF, GSPO_CF, GPOS_CF, GOSP_CF,
];
struct RocksDbStore {
db: DB,
str_id_counter: Mutex<RocksDBCounter>,
}
#[derive(Clone)]
@ -81,7 +76,6 @@ pub struct RocksDbStoreConnection<'a> {
store: &'a RocksDbStore,
buffer: Vec<u8>,
id2str_cf: ColumnFamily<'a>,
str2id_cf: ColumnFamily<'a>,
spog_cf: ColumnFamily<'a>,
posg_cf: ColumnFamily<'a>,
ospg_cf: ColumnFamily<'a>,
@ -115,7 +109,6 @@ impl RocksDbStore {
let new = Self {
db: DB::open_cf(&options, path, &COLUMN_FAMILIES)?,
str_id_counter: Mutex::new(RocksDBCounter::new("bsc")),
};
(&new).connection()?.set_first_strings()?;
Ok(new)
@ -130,7 +123,6 @@ impl<'a> Store for &'a RocksDbStore {
store: self,
buffer: Vec::default(),
id2str_cf: get_cf(&self.db, ID2STR_CF)?,
str2id_cf: get_cf(&self.db, STR2ID_CF)?,
spog_cf: get_cf(&self.db, SPOG_CF)?,
posg_cf: get_cf(&self.db, POSG_CF)?,
ospg_cf: get_cf(&self.db, OSPG_CF)?,
@ -141,42 +133,24 @@ impl<'a> Store for &'a RocksDbStore {
}
}
impl StringStore for RocksDbStoreConnection<'_> {
type StringType = RocksString;
impl StrLookup for RocksDbStoreConnection<'_> {
type StrType = RocksString;
fn get_str(&self, id: u64) -> Result<Option<RocksString>> {
fn get_str(&self, id: u128) -> Result<Option<RocksString>> {
Ok(self
.store
.db
.get_cf(self.id2str_cf, &to_bytes(id))?
.get_cf(self.id2str_cf, &id.to_le_bytes())?
.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)))
}
fn insert_str(&self, value: &str) -> Result<u64> {
Ok(if let Some(id) = self.get_str_id(value)? {
id
} else {
let id = self
.store
.str_id_counter
.lock()
.map_err(MutexPoisonError::from)?
.get_and_increment(&self.store.db)? as u64;
let id_bytes = to_bytes(id);
let mut batch = WriteBatch::default();
batch.put_cf(self.id2str_cf, &id_bytes, value)?;
batch.put_cf(self.str2id_cf, value, &id_bytes)?;
self.store.db.write(batch)?;
id
})
impl StrContainer for RocksDbStoreConnection<'_> {
fn insert_str(&self, key: u128, value: &str) -> Result<()> {
self.store
.db
.put_cf(self.id2str_cf, &key.to_le_bytes(), value)?;
Ok(())
}
}
@ -530,24 +504,6 @@ fn wrap_error<'a, E: 'a, I: Iterator<Item = Result<E>> + 'a>(
}
}
struct RocksDBCounter {
name: &'static str,
}
impl RocksDBCounter {
fn new(name: &'static str) -> Self {
Self { name }
}
fn get_and_increment(&self, db: &DB) -> Result<u64> {
let value = db
.get(self.name.as_bytes())?
.map_or(0, |b| LittleEndian::read_u64(&b));
db.put(self.name.as_bytes(), &to_bytes(value + 1))?;
Ok(value)
}
}
struct EncodedQuadPattern {
subject: Option<EncodedTerm>,
predicate: Option<EncodedTerm>,
@ -740,12 +696,6 @@ impl<I: Iterator<Item = Result<EncodedQuad>>> Iterator for FilteringEncodedQuads
}
}
fn to_bytes(int: u64) -> [u8; 8] {
let mut buf = [0 as u8; 8];
LittleEndian::write_u64(&mut buf, int);
buf
}
pub struct RocksString {
vec: DBVector,
}

Write Preview
Loading…
Cancel
Save