Package com.saxonica.functions.extfn

The package com.saxonica.extfn contains implementations of extension functions in the Saxon namespace.

See:
Description

Class Summary

AnalyzeStringFunction	This class implements the extension function saxon:analyze-string().
CompileQuery	This class implements the saxon:compile-query() extension function
CompileStylesheet	This class implements the saxon:compile-stylesheet() extension function
DeepEqual	Implements the saxon:deep-equal() function, a variant of fn:deep-equal that provides additional control over how the comparison is performed.
Deref	This class implements the extension function saxon:ref().
DynamicErrorInfo	This class implements the extension function saxon:dynamic-error-info(), which underpins the variables accessible within saxon:catch such as $err:code etc.
Eval	This class implements the saxon:eval() extension function
Evaluate	This class implements the saxon:evaluate() extension function
Evaluate.EvaluateCall
Evaluate.PreparedExpression	Inner class PreparedExpression represents a compiled XPath expression together with the standard variables $p1 ..
EvaluateNode	This class implements the saxon:evaluate-node() extension function
ExpressionFn	This class implements the saxon:expression() extension function
Extensions	This class implements functions that are supplied as standard with SAXON, but which are not defined in the XSLT or XPath specifications.
ExtraFunctionLibrary	The ExtraFunctionLibrary represents additions to the set of Saxon vendor-supplied extension functions that are available only with the Saxon-PE and Saxon-EE editions
Find	This class implements the extension function saxon:find, which finds a value within an indexed sequence
ForEachGroupFunction	This class implements the extension function saxon:for-each-group().
GeneralFilterFunction	This class provides an abstract framework for a collection of extension functions that have the same general characteristics: (a) the first argument is a sequence, (b) the result is a subset/rearrangement of that sequence, (d) the second argument is a single argument function that is applied to the members of the sequence, (e) the default function if the second argument is omitted is fn:data(), (e) the processing may depend on the default collation.
GeneralFilterFunction.GeneralFilterFunctionCall
Highest	This class implements the saxon:highest() extension function
HighestOrLowest	This class implements the saxon:highest() and saxon:lowest() extension functions.
Index	This class supports the extension function saxon:index, which returns an indexed sequence
LastModified	Extension function to determined the last-modified date of a file
Leading	This class implements the saxon:leading() extension functions.
Lowest	This class implements the saxon:lowest() extension function
Parse	This class implements the saxon:parse() extension function, which is specially-recognized by the system because it needs access to parts of the static context
Parse.ParseCall
ParseHtml	Supports the saxon:parse-html() function, a variant of saxon:parse() that differs only in that it uses the TagSoup HTML parser
QueryFn	This class implements the saxon:query() extension function
Ref	This class implements the extension function saxon:ref().
Serialize	This class implements the saxon:serialize() extension function, which is specially-recognized by the system because it needs access to parts of the static context
Sort	This class implements the saxon:sort() extension functions.
SubsequenceTestFn	Abstract class providing functionality common to functions saxon:subsequence-before, saxon:subsequence-after etc; contains the concrete implementations of these functions as inner subclasses
SubsequenceTestFn.SubsequenceAfterFn	Implement saxon:subsequence-after
SubsequenceTestFn.SubsequenceBeforeFn	Implement saxon:subsequence-before
SubsequenceTestFn.SubsequenceFromFn	Implement saxon:subsequence-from
SubsequenceTestFn.SubsequenceUntilFn	Implement saxon:subsequence-until
TransformFn	This class implements the saxon:transform() extension function

Package com.saxonica.functions.extfn Description

The package com.saxonica.extfn contains implementations of extension functions in the Saxon namespace.

It also contains the class ExtraFunctionLibrary which acts as a factory class for generating instances of these extension functions

Most of these classes are implemented using the new "integrated extension function" mechanism introduced in Saxon 9.2. A few still use the reflection mechanism, these are in class com.saxonica.extfn.Extensions.

Michael H. Kay
Saxonica Limited
12 June 2009