com.sun.org.apache.xpath.internal.axes.ContextNodeList Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of jaxp-ri Show documentation
Java API for XML Processing Reference Implementation
The newest version!
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 *
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 * 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,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id: ContextNodeList.java,v 1.7 2010-11-01 04:35:02 joehw Exp $
 */
package com.sun.org.apache.xpath.internal.axes;

import org.w3c.dom.Node;
import org.w3c.dom.traversal.NodeIterator;

/**
 * Classes who implement this interface can be a
 * current node list,
 * also refered to here as a context node list.
 * @xsl.usage advanced
 */
public interface ContextNodeList
{

  /**
   * Get the current node.
   *
   *
   * @return The current node, or null.
   */
  public Node getCurrentNode();

  /**
   * Get the current position, which is one less than
   * the next nextNode() call will retrieve.  i.e. if
   * you call getCurrentPos() and the return is 0, the next
   * fetch will take place at index 1.
   *
   * @return The position of the
   * current node
   * in the  current node list.
   */
  public int getCurrentPos();

  /**
   * Reset the iterator.
   */
  public void reset();

  /**
   * If setShouldCacheNodes(true) is called, then nodes will
   * be cached.  They are not cached by default.
   *
   * @param b true if the nodes should be cached.
   */
  public void setShouldCacheNodes(boolean b);

  /**
   * If an index is requested, NodeSetDTM will call this method
   * to run the iterator to the index.  By default this sets
   * m_next to the index.  If the index argument is -1, this
   * signals that the iterator should be run to the end.
   *
   * @param index The index to run to, or -1 if the iterator should be run
   *              to the end.
   */
  public void runTo(int index);

  /**
   * Set the current position in the node set.
   * @param i Must be a valid index.
   */
  public void setCurrentPos(int i);

  /**
   * Get the length of the list.
   *
   * @return The number of nodes in this node list.
   */
  public int size();

  /**
   * Tells if this NodeSetDTM is "fresh", in other words, if
   * the first nextNode() that is called will return the
   * first node in the set.
   *
   * @return true if the iteration of this list has not yet begun.
   */
  public boolean isFresh();

  /**
   * Get a cloned Iterator that is reset to the start of the iteration.
   *
   * @return A clone of this iteration that has been reset.
   *
   * @throws CloneNotSupportedException
   */
  public NodeIterator cloneWithReset() throws CloneNotSupportedException;

  /**
   * Get a clone of this iterator.  Be aware that this operation may be
   * somewhat expensive.
   *
   *
   * @return A clone of this object.
   *
   * @throws CloneNotSupportedException
   */
  public Object clone() throws CloneNotSupportedException;

  /**
   * Get the index of the last node in this list.
   *
   *
   * @return the index of the last node in this list.
   */
  public int getLast();

  /**
   * Set the index of the last node in this list.
   *
   *
   * @param last the index of the last node in this list.
   */
  public void setLast(int last);
}