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 * DO NOT REMOVE OR ALTER!

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/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

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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;

/**

 * <p>

 * The XPointerProcessor is responsible for parsing an XPointer

 * expression and and providing scheme specific resolution of

 * the document fragment pointed to be the pointer.

 * </p>

 *

 * @xerces.internal

 *

 */

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;

}