Third Party Source Components

These tables lists components in category B as described above. (Category B is open source code that has been integrated at source level, without the involvement of the original author.)

Unlike contributed code, this code was not written specifically for inclusion in Saxon, but was originally published under some other license.

B1 Generic Sorter

Origin	CERN (author Wolfgang Hoschek)
Description	Generic sort routines based on published algorithms
Approximate LOC	500
Saxon packages / modules	`net.sf.saxon.sort.GenericSorter`
Modifications	Minimal modifications needed to integrate the code
Availability of source	Currently available as part of Colt project, `http://dsd.lbl.gov/~hoschek/colt/`, module `cern.colt.GenericSorting`
Source version used	Unknown. Snapshot taken in 2004?
License	CERN License: see below

B2 Unicode Normalization

Origin	Unicode Consortium (author Mark Davis)
Description	Routines for Unicode character normalization
Approximate LOC	3500 (including data sets)
Saxon packages / modules	`net.sf.saxon.sort.codenorm.*`
Modifications	Core functionality unchanged; rewrote the module that loads the data tables from the Unicode character database; removed dependencies on ICU; fixed a few bugs
Availability of source	Specification of algorithm at `http://unicode.org/reports/tr15/`, code originally published at `http://www.unicode.org/reports/tr15/Normalizer.html`, withdrawn in January 2012.
Source version used	No version number. Snapshot taken in June 2005
License	Unicode license: see below:

COPYRIGHT AND PERMISSION NOTICE
Copyright © 1991-2007 Unicode, Inc. All rights reserved. Distributed under the Terms of Use in http://www.unicode.org/copyright.html.

Permission is hereby granted, free of charge, to any person obtaining a copy of the Unicode data files and any associated documentation (the "Data Files") or Unicode software and any associated documentation (the "Software") to deal in the Data Files or Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, and/or sell copies of the Data Files or Software, and to permit persons to whom the Data Files or Software are furnished to do so, provided that (a) the above copyright notice(s) and this permission notice appear with all copies of the Data Files or Software, (b) both the above copyright notice(s) and this permission notice appear in associated documentation, and (c) there is clear notice in each modified Data File or in the Software as well as in the documentation associated with the Data File(s) or Software that the data or software has been modified.

THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA FILES OR SOFTWARE.

Except as contained in this notice, the name of a copyright holder shall not be used in advertising or otherwise to promote the sale, use or other dealings in these Data Files or Software without prior written authorization of the copyright holder.

B3 XPath Parser

Origin	James Clark (www.jclark.com)
Description	Top-down parser and lexical tokenizer for XPath
Approximate LOC	1000 (including data sets)
Saxon packages / modules	`net.sf.saxon.expr.*`, modules `XPathParser`, `Tokenizer`, `Token`
Modifications	Almost entirely rewritten with enhancements to handle XPath 2.0/3.0 and XQuery 1.0/3.0 syntax, improved error reporting, etc.
Availability of source	Derives from James Clark's xt product, which in its original form is at `http://www.jclark.com/xml/xt-old.html`. Package `com.jclark.xsl.expr`, modules `ExprParser` and `ExprTokenizer`
Source version used	Unknown. Snapshot taken in 1999.
License	James Clark (see below). Apparently copyright has since been transferred to the Thai Open Source Center Ltd.

Copyright (c) 1998, 1999 James Clark

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL JAMES CLARK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of James Clark shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from James Clark.

B4 Apache Jakarta Regexp Engine

Saxon includes a regular expression engine derived from the Apache Jakarta Regexp project, which was originally developed by Jonathan Locke. It has been extensively modified to make the syntax and semantics conform to the W3C specifications, to fully support Unicode, to improve performance, and to integrate with Saxon.

Origin	Apache (author Jonathan Locke)
Description	Regular Expression engine
Approximate LOC	2600
Saxon packages / modules	package `net.sf.saxon.regex`, classes `RECompiler`, `REProgram`, `REMatcher`
Modifications	substantial modifications to implement the XSD and XPath regular expression syntax and semantics, to add Unicode support, and to integrate with the rest of the Saxon code.
Availability of source	http://jakarta.apache.org/regexp/
Source version used	Version 1.5
License	Apache License, version 2.0

B5 Immutable Hash Trie

Saxon implements XPath maps using an immutable hash trie map. The implementation is derived from code published on GitHub by Michael Froh. The published GitHub code carries no licensing conditions, but the author has given permission for Saxonica to release the code under the Mozilla Public License 2.0.

Origin	Github Gist (author Michael Froh, msfroh)
Description	Implementation of immutable hash trie maps
Approximate LOC	500
Saxon packages / modules	package `com.saxonica.functions.trie`, classes `ImmutableMap` and `ImmutableHashTrieMap`.
Modifications	minor modifications to integrate with Saxon code, especially by removing dependencies on some utility classes also published by the author.
Availability of source	https://gist.github.com/msfroh
Source version used	Version dated 2012-06-02
License	Mozilla Public License, version 2.0