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## Package net.sf.saxon.expr.number

This package provides classes associated with numbering and the `xsl:number` element.

See:
Description

Class Summary
AbstractNumberer | Class AbstractNumberer is a base implementation of Numberer that provides language-independent default numbering This supports the xsl:number element.
Alphanumeric | This class contains static utility methods to test whether a character is alphanumeric, as defined by the rules of xsl:number: that is, whether it is in one of the Unicode categories Nd, Nl, No, Lu, Ll, Lt, Lm or Lo
IrregularGroupFormatter | Handles grouping separators when formatting a number in cases where the grouping separators are not at regular intervals
NamedTimeZone | This class attempts to identify a timezone name, given the date (including the time zone offset) and the country.
Numberer_en | Numberer class for the English language.
NumberFormatter | Class NumberFormatter defines a method to format a ArrayList of integers as a character string according to a supplied format specification.
NumericGroupFormatter | A NumericGroupFormatter is responsible for insertion of grouping separators into a formatted number (for example, reformatting "1234" as "1,234").
RegularGroupFormatter | A RegularGroupFormatter is a NumericGroupFormatter that inserts a separator at constant intervals through a number: for example, a comma after every three digits counting from the right.

## Package net.sf.saxon.expr.number Description

This package provides classes associated with numbering and the `xsl:number` element.

It is possible to extend the range of numberings available by providing a Numberer for a specific language. This must be registered with the `Configuration`. In earlier releases, there was a fixed relationship between the language and the implementing class (the Numberer was always named Numberer_xx where xx is the language code, corresponding to the value of the lang attribute in `xsl:number`). From Saxon 9.2, this relationship no longer exists.

These classes also include code to support the localization of dates as defined in the XSLT `format-dateTime()` group of functions.

The class `Numberer_en` provides the standard numbering options. As well as the format tokens defined in the XSLT 1.0 specification (for example, "1", "001", "a", "i") it supports other numbering options including:

- Greek upper and lower case letters
  Cyrillic upper and lower case letters
  Hebrew letters
  Japanese: Hiragana-A, Hiragana-B, Katakana-A, or Katakana-B letters, and Kanji digits
  English words: the format token "one" produces numbers such as "twenty five"

Localizations for a number of European languages are provided in package `net.sf.saxon.option.local`. In Saxon-PE and Saxon-EE these are issued in binary form as part of the Saxon JAR. For Saxon-HE, they are issued only in source code form.

Michael H. Kay
Saxonica Limited
12 June 2009

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