Apache Xerces

Apache Xerces
Developer(s)	Apache Software Foundation
Stable release	2.12.2 (Xerces J); 3.2.3 (Xerces C++) / 24 January 2022 (Xerces J); 10 April 2020 (Xerces C++)
Operating system	Cross-platform
Type	XML parser library
License	Apache License 2.0
Website	xerces.apache.org

In computing, Xerces is Apache's collection of software libraries for parsing, validating, serializing and manipulating XML. The library implements a number of standard APIs for XML parsing, including DOM, SAX and SAX2. The implementation is available in the Java, C++ and Perl programming languages.

The name "Xerces" is believed to commemorate the extinct Xerces blue butterfly (Glaucopsyche xerces).^[1]

Xerces language versions

There are several language versions of the Xerces parser:

Xerces2 Java, the Java reference implementation
Xerces C++, a C++ implementation
Xerces Perl, a Perl implementation. This implementation is a wrapper around the C++ API.^[2]

Language	Release Date	Version
Java	2022-01-24	2.12.2
C++	2020-04-10	3.2.3
Perl	2014-04-30	2.7.0

Features

The features supported by Xerces depend on the language, the Java version having the most features.

Feature	Java^[3]	C++^[4]	Perl
eXtensible Markup Language (XML) 1.0 Fourth Edition Recommendation	Yes	Partial^[1]	Partial^[2]
eXtensible Markup Language (XML) 1.1 Second Edition Recommendation	Yes	Partial^[3]	Partial^[4]
Namespaces in XML 1.1 Second Edition Recommendation	Yes	Partial^[5]	Partial^[6]
Namespaces in XML 1.0 Second Edition Recommendation	Yes	Partial^[7]	Partial^[8]
XML Inclusions (XInclude) Version 1.0 Second Edition Recommendation	Yes	Yes	Yes
Simple API for XML (SAX)	Yes	Yes	Yes
Streaming API For XML (StAX)	Yes	No	No
DOM Level 2 Core Specification	Yes	Yes	Yes
DOM Level 2 Traversal and Range Specification	Yes	Yes	Yes
Document Object Model (DOM) Level 3 Core, Load and Save	Yes	Yes	Yes
Element Traversal Specification	Yes	Yes	Yes
XML Schema 1.0 Structures and Datatypes	Yes	Yes	Yes
XML Schema 1.1 Structures and Datatypes	Yes	No	No
XML Schema Definition Language (XSD): Component Designators (SCD)	Yes	No	No
Java APIs for XML Processing (JAXP) 1.4	Yes	No	No

References

^ Benz, Brian; Durant, John (7 May 2004). XML Programming Bible. John Wiley & Sons (published 2004). p. 87. ISBN 9780764555763. Retrieved 2014-10-01. Apparently, the parser was named after the now extinct Xerces blue butterfly, a native of the San Francisco peninsula.
^ "Apache Xerces Perl". xerces.apache.org. Retrieved 2019-12-08. XML::Xerces is the Perl API to the Apache project's Xerces XML parser. It is implemented using the Xerces C++ API, and it provides access to most of the C++ API from Perl.
^ "Features". xerces.apache.org. Retrieved 2019-12-08.
^ "Features". xerces.apache.org. Retrieved 2019-12-08.

Notes

^ Implemented third edition.
^ Implemented second edition. Section 2.13 Normalization Checking has not been implemented.
^ Implemented first edition.
^ Implemented first edition.