com.saxonica.functions.extfn
Class SubsequenceTestFn.SubsequenceBeforeFn

java.lang.Object
  net.sf.saxon.lib.ExtensionFunctionDefinition
      com.saxonica.functions.extfn.SubsequenceTestFn
          com.saxonica.functions.extfn.SubsequenceTestFn.SubsequenceBeforeFn

All Implemented Interfaces:

Serializable

Enclosing class:

SubsequenceTestFn

public static class SubsequenceTestFn.SubsequenceBeforeFn
extends SubsequenceTestFn

Implement saxon:subsequence-before

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.saxonica.functions.extfn.SubsequenceTestFn

SubsequenceTestFn.SubsequenceAfterFn, SubsequenceTestFn.SubsequenceBeforeFn, SubsequenceTestFn.SubsequenceFromFn, SubsequenceTestFn.SubsequenceUntilFn

Constructor Summary

SubsequenceTestFn.SubsequenceBeforeFn()

Method Summary

protected SequenceIterator	compute(SequenceIterator input, FunctionItem test, XPathContext context) The function that does the work, which must be implemented in subclasses
StructuredQName	getFunctionQName() Get the name of the function, as a QName.

Methods inherited from class com.saxonica.functions.extfn.SubsequenceTestFn

getArgumentTypes, getMaximumNumberOfArguments, getMinimumNumberOfArguments, getResultType, makeCallExpression, trustResultType

Methods inherited from class net.sf.saxon.lib.ExtensionFunctionDefinition

dependsOnFocus, hasSideEffects

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SubsequenceTestFn.SubsequenceBeforeFn

public SubsequenceTestFn.SubsequenceBeforeFn()

Method Detail

getFunctionQName

public StructuredQName getFunctionQName()

Description copied from class: ExtensionFunctionDefinition

Get the name of the function, as a QName.

This method must be implemented in all subclasses

Specified by:

getFunctionQName in class ExtensionFunctionDefinition

Returns:

the function name

compute

protected SequenceIterator compute(SequenceIterator input,
                                   FunctionItem test,
                                   XPathContext context)

Description copied from class: SubsequenceTestFn

The function that does the work, which must be implemented in subclasses

Specified by:

compute in class SubsequenceTestFn

Parameters:

input - the input sequence

test - the function to be applied to the items in the sequence, which takes an item in the sequence as input and produces a boolean as its result

context - the XPath dynamic context

Returns:

the result