iaik.xml.filter.impl.dsig

Class XPathSieve

java.lang.Object

iaik.xml.filter.impl.dsig.FilterIterator

iaik.xml.filter.impl.dsig.XPathSieve

All Implemented Interfaces:

Iterator

public class XPathSieve
extends FilterIterator

A FilterIterator implementing the XPath Filtering behaviour as specified by the W3C recommendation XML-Signature Syntax and Processing.

NOTE: The input Iterator MUST provide the Nodes of the input node-set in document order (according to XML Path Language (XPath) Version 1.0, Section 5 ) with the following weakening: The order of the namespace and attribute child nodes of an element may be arbitrary.

Field Summary

Fields

Modifier and Type	Field and Description
protected XPathEvaluator	evaluator_

Fields inherited from class iaik.xml.filter.impl.dsig.FilterIterator

iterator_, nextObj_

Constructor Summary

Constructors

Constructor and Description
XPathSieve(Iterator iterator, String xPathExpr, Node ownerNode, Map additionalNSPrefixes, DOMCryptoContext context)

Method Summary

Modifier and Type	Method and Description
boolean	skip(Object obj) Returns true if the given obj ect should NOT be returned by the FilterIterator.next()method, otherwise returns false .

Methods inherited from class iaik.xml.filter.impl.dsig.FilterIterator

hasNext, next, remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

evaluator_

protected XPathEvaluator evaluator_

Constructor Detail

XPathSieve

public XPathSieve(Iterator iterator,
                  String xPathExpr,
                  Node ownerNode,
                  Map additionalNSPrefixes,
                  DOMCryptoContext context)
           throws XPathException

Parameters:

iterator -

xPathExpr -

ownerNode -

additionalNSPrefixes -

context -

Throws:

XPathException

Method Detail

skip

public boolean skip(Object obj)
             throws SkipException

Description copied from class: FilterIterator

Returns true if the given obj ect should NOT be returned by the FilterIterator.next()method, otherwise returns false .

Overwrite this method to implement specific filtering of Nodes.

Specified by:

skip in class FilterIterator

Parameters:

obj - the object to be tested

Returns:

true if the object should be skipped, false otherwise

Throws:

SkipException - A runtime exception wrapping around XPathException which should not occur in normal operation.

See Also:

FilterIterator.skip(java.lang.Object)