6 releases

0.2.0-alpha.2 May 22, 2024
0.2.0-alpha.1 Jan 3, 2024
0.1.3 Jun 13, 2023
0.1.1 Feb 23, 2023
0.1.0 Jan 18, 2023

#433 in Database interfaces

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Used in 22 crates (6 directly)


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oxsdatatypes is an implementation of some XML Schema Definition Language Datatypes. Its main aim is to ease the implementation of SPARQL and XPath.

Usage example:

use std::str::FromStr;
use oxsdatatypes::Decimal;

assert!(Decimal::from_str("22.2").unwrap() > Decimal::from_str("21").unwrap());

Each datatype is represented by a Rust struct.

Each datatype provides:

  • FromStr implementation to parse a datatype string serialization following its lexical mapping.
  • Display implementation to serialize a datatype following its canonical mapping.
  • is_identical_with method following its identity relation.
  • PartialEq, and Eq if possible, implementations following its equality relation.
  • PartialOrd, and Ord if possible, implementations following its order relation.
  • From and TryFrom implementations to implement XPath casting.
  • Various methods implementing XPath functions.
  • from_be_bytes and to_be_bytes methods for serialization.

DateTime::now behavior

The DateTime::now() function needs special OS support. Currently:

  • If the custom-now feature is enabled, a function computing now must be set:
    use oxsdatatypes::Duration;
    fn custom_ox_now() -> Duration {
      unimplemented!("now implementation")
  • For wasm32-unknown-unknown if the js feature is enabled the Date.now() ECMAScript API is used.
  • For all other targets SystemTime::now() is used.


This project is licensed under either of

  • Apache License, Version 2.0, (LICENSE-APACHE or <http://www.apache.org/licenses/LICENSE-2.0>)
  • MIT license (LICENSE-MIT or <http://opensource.org/licenses/MIT>)

at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Oxigraph by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.


~19K SLoC