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Use Little Endian to store data

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It's the most common endianness
pull/10/head
Tpt 6 years ago
parent 467921944b
commit fc9a987dd7
2 changed files with 34 additions and 34 deletions
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  1. 60
      lib/src/store/numeric_encoder.rs
  2. 8
      lib/src/store/rocksdb.rs

60
lib/src/store/numeric_encoder.rs
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@ -1,4 +1,4 @@
use byteorder::{NetworkEndian, ReadBytesExt, WriteBytesExt};
use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
use chrono::DateTime;
use chrono::FixedOffset;
use chrono::NaiveDateTime;
@ -270,7 +270,7 @@ 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::<NetworkEndian>()?,
iri_id: self.read_u64::<LittleEndian>()?,
}),
TYPE_BLANK_NODE_ID => {
let mut uuid_buffer = [0 as u8; 16];
@ -278,29 +278,29 @@ impl<R: Read> TermReader for R {
Ok(EncodedTerm::BlankNode(Uuid::from_bytes(uuid_buffer)))
}
TYPE_SIMPLE_LITERAL_ID => Ok(EncodedTerm::SimpleLiteral {
value_id: self.read_u64::<NetworkEndian>()?,
value_id: self.read_u64::<LittleEndian>()?,
}),
TYPE_LANG_STRING_LITERAL_ID => Ok(EncodedTerm::LangStringLiteral {
language_id: self.read_u64::<NetworkEndian>()?,
value_id: self.read_u64::<NetworkEndian>()?,
language_id: self.read_u64::<LittleEndian>()?,
value_id: self.read_u64::<LittleEndian>()?,
}),
TYPE_TYPED_LITERAL_ID => Ok(EncodedTerm::TypedLiteral {
datatype_id: self.read_u64::<NetworkEndian>()?,
value_id: self.read_u64::<NetworkEndian>()?,
datatype_id: self.read_u64::<LittleEndian>()?,
value_id: self.read_u64::<LittleEndian>()?,
}),
TYPE_STRING_LITERAL => Ok(EncodedTerm::StringLiteral {
value_id: self.read_u64::<NetworkEndian>()?,
value_id: self.read_u64::<LittleEndian>()?,
}),
TYPE_BOOLEAN_LITERAL_TRUE => Ok(EncodedTerm::BooleanLiteral(true)),
TYPE_BOOLEAN_LITERAL_FALSE => Ok(EncodedTerm::BooleanLiteral(false)),
TYPE_FLOAT_LITERAL => Ok(EncodedTerm::FloatLiteral(OrderedFloat(
self.read_f32::<NetworkEndian>()?,
self.read_f32::<LittleEndian>()?,
))),
TYPE_DOUBLE_LITERAL => Ok(EncodedTerm::DoubleLiteral(OrderedFloat(
self.read_f64::<NetworkEndian>()?,
self.read_f64::<LittleEndian>()?,
))),
TYPE_INTEGER_LITERAL => Ok(EncodedTerm::IntegerLiteral(
self.read_i128::<NetworkEndian>()?,
self.read_i128::<LittleEndian>()?,
)),
TYPE_DECIMAL_LITERAL => {
let mut buffer = [0 as u8; 16];
@ -309,16 +309,16 @@ impl<R: Read> TermReader for R {
}
TYPE_DATE_TIME_LITERAL => Ok(EncodedTerm::DateTime(DateTime::from_utc(
NaiveDateTime::from_timestamp_opt(
self.read_i64::<NetworkEndian>()?,
self.read_u32::<NetworkEndian>()?,
self.read_i64::<LittleEndian>()?,
self.read_u32::<LittleEndian>()?,
).ok_or("Invalid date time serialization")?,
FixedOffset::east_opt(self.read_i32::<NetworkEndian>()?)
FixedOffset::east_opt(self.read_i32::<LittleEndian>()?)
.ok_or("Invalid timezone offset")?,
))),
TYPE_NAIVE_DATE_TIME_LITERAL => Ok(EncodedTerm::NaiveDateTime(
NaiveDateTime::from_timestamp_opt(
self.read_i64::<NetworkEndian>()?,
self.read_u32::<NetworkEndian>()?,
self.read_i64::<LittleEndian>()?,
self.read_u32::<LittleEndian>()?,
).ok_or("Invalid date time serialization")?,
)),
_ => Err("the term buffer has an invalid type id".into()),
@ -377,38 +377,38 @@ impl<R: Write> TermWriter for R {
self.write_u8(term.type_id())?;
match term {
EncodedTerm::DefaultGraph {} => {}
EncodedTerm::NamedNode { iri_id } => self.write_u64::<NetworkEndian>(iri_id)?,
EncodedTerm::NamedNode { iri_id } => self.write_u64::<LittleEndian>(iri_id)?,
EncodedTerm::BlankNode(id) => self.write_all(id.as_bytes())?,
EncodedTerm::SimpleLiteral { value_id } | EncodedTerm::StringLiteral { value_id } => {
self.write_u64::<NetworkEndian>(value_id)?;
self.write_u64::<LittleEndian>(value_id)?;
}
EncodedTerm::LangStringLiteral {
value_id,
language_id,
} => {
self.write_u64::<NetworkEndian>(language_id)?;
self.write_u64::<NetworkEndian>(value_id)?;
self.write_u64::<LittleEndian>(language_id)?;
self.write_u64::<LittleEndian>(value_id)?;
}
EncodedTerm::TypedLiteral {
value_id,
datatype_id,
} => {
self.write_u64::<NetworkEndian>(datatype_id)?;
self.write_u64::<NetworkEndian>(value_id)?;
self.write_u64::<LittleEndian>(datatype_id)?;
self.write_u64::<LittleEndian>(value_id)?;
}
EncodedTerm::BooleanLiteral(_) => {}
EncodedTerm::FloatLiteral(value) => self.write_f32::<NetworkEndian>(*value)?,
EncodedTerm::DoubleLiteral(value) => self.write_f64::<NetworkEndian>(*value)?,
EncodedTerm::IntegerLiteral(value) => self.write_i128::<NetworkEndian>(value)?,
EncodedTerm::FloatLiteral(value) => self.write_f32::<LittleEndian>(*value)?,
EncodedTerm::DoubleLiteral(value) => self.write_f64::<LittleEndian>(*value)?,
EncodedTerm::IntegerLiteral(value) => self.write_i128::<LittleEndian>(value)?,
EncodedTerm::DecimalLiteral(value) => self.write_all(&value.serialize())?,
EncodedTerm::DateTime(value) => {
self.write_i64::<NetworkEndian>(value.timestamp())?;
self.write_u32::<NetworkEndian>(value.timestamp_subsec_nanos())?;
self.write_i32::<NetworkEndian>(value.timezone().local_minus_utc())?;
self.write_i64::<LittleEndian>(value.timestamp())?;
self.write_u32::<LittleEndian>(value.timestamp_subsec_nanos())?;
self.write_i32::<LittleEndian>(value.timezone().local_minus_utc())?;
}
EncodedTerm::NaiveDateTime(value) => {
self.write_i64::<NetworkEndian>(value.timestamp())?;
self.write_u32::<NetworkEndian>(value.timestamp_subsec_nanos())?;
self.write_i64::<LittleEndian>(value.timestamp())?;
self.write_u32::<LittleEndian>(value.timestamp_subsec_nanos())?;
}
}
Ok(())

8
lib/src/store/rocksdb.rs
Unescape View File

@ -1,5 +1,5 @@
use byteorder::ByteOrder;
use byteorder::NetworkEndian;
use byteorder::LittleEndian;
use rocksdb::ColumnFamily;
use rocksdb::DBRawIterator;
use rocksdb::DBVector;
@ -84,7 +84,7 @@ impl BytesStore for RocksDbStore {
fn insert_bytes(&self, value: &[u8]) -> Result<u64> {
Ok(if let Some(id) = self.db.get_cf(self.str2id_cf, value)? {
NetworkEndian::read_u64(&id)
LittleEndian::read_u64(&id)
} else {
let id = self.str_id_counter.lock()?.get_and_increment(&self.db)? as u64;
let id_bytes = to_bytes(id);
@ -341,7 +341,7 @@ impl RocksDBCounter {
fn get_and_increment(&self, db: &DB) -> Result<u64> {
let value = db
.get(self.name.as_bytes())?
.map_or(0, |b| NetworkEndian::read_u64(&b));
.map_or(0, |b| LittleEndian::read_u64(&b));
db.put(self.name.as_bytes(), &to_bytes(value + 1))?;
Ok(value)
}
@ -513,6 +513,6 @@ impl<I: Iterator<Item = Result<EncodedQuad>>> Iterator for InGraphQuadsIterator<
fn to_bytes(int: u64) -> [u8; 8] {
let mut buf = [0 as u8; 8];
NetworkEndian::write_u64(&mut buf, int);
LittleEndian::write_u64(&mut buf, int);
buf
}

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