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package com.sun.org.apache.xerces.internal.xpointer;
import com.sun.org.apache.xerces.internal.xni.Augmentations;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
import com.sun.org.apache.xerces.internal.xni.XNIException;
/**
*
* The XPointerProcessor is responsible for parsing an XPointer
* expression and and providing scheme specific resolution of
* the document fragment pointed to be the pointer.
*
*
* @xerces.internal
*
* @version $Id: XPointerProcessor.java,v 1.5 2010-11-01 04:40:26 joehw Exp $
*
*/
public interface XPointerProcessor {
// The start element event
public static final int EVENT_ELEMENT_START = 0;
// The end element event
public static final int EVENT_ELEMENT_END = 1;
// The empty element event
public static final int EVENT_ELEMENT_EMPTY = 2;
/**
* Parses an XPointer expression. It performs scheme specific processing
* depending on the pointer parts and sets up a Vector of XPointerParts
* in the order (left-to-right) they appear in the XPointer expression.
*
* @param xpointer A String representing the xpointer expression.
* @throws XNIException Thrown if the xpointer string does not conform to
* the XPointer Framework syntax or the syntax of the pointer part does
* not conform to its definition for its scheme.
*
*/
public void parseXPointer(String xpointer) throws XNIException;
/**
* Evaluates an XML resource with respect to an XPointer expressions
* by checking if it's element and attributes parameters match the
* criteria specified in the xpointer expression.
*
* @param element - The name of the element.
* @param attributes - The element attributes.
* @param augs - Additional information that may include infoset augmentations
* @param event - An integer indicating
* 0 - The start of an element
* 1 - The end of an element
* 2 - An empty element call
* @return true if the element was resolved by the xpointer
* @throws XNIException Thrown to signal an error
*
*/
public boolean resolveXPointer(QName element, XMLAttributes attributes,
Augmentations augs, int event) throws XNIException;
/**
* Returns true if the XPointer expression resolves to the current resource fragment
* or Node which is part of the input resource being streamed else returns false.
*
* @return True if the xpointer expression matches a node/fragment in the resource
* else returns false.
* @throws XNIException Thrown to signal an error
*
*/
public boolean isFragmentResolved() throws XNIException;
/**
* Returns true if the XPointer expression resolves any subresource of the
* input resource.
*
* @return True if the xpointer expression matches a fragment in the resource
* else returns false.
* @throws XNIException Thrown to signal an error
*
*/
public boolean isXPointerResolved() throws XNIException;
}