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 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 */
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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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 * See the License for the specific language governing permissions and
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package com.sun.org.apache.xpath.internal.patterns;

import com.sun.org.apache.xml.internal.dtm.Axis;
import com.sun.org.apache.xml.internal.dtm.DTM;
import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser;
import com.sun.org.apache.xml.internal.dtm.DTMFilter;
import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.axes.WalkerFactory;
import com.sun.org.apache.xpath.internal.objects.XObject;
Special context node pattern matcher.
@LastModified: Oct 2017
/** * Special context node pattern matcher. * * @LastModified: Oct 2017 */
public class ContextMatchStepPattern extends StepPattern { static final long serialVersionUID = -1888092779313211942L;
Construct a ContextMatchStepPattern.
/** * Construct a ContextMatchStepPattern. * */
public ContextMatchStepPattern(int axis, int paxis) { super(DTMFilter.SHOW_ALL, axis, paxis); }
Execute this pattern step, including predicates.
Params:
  • xctxt – XPath runtime context.
Throws:
Returns:NodeTest.SCORE_NODETEST, NodeTest.SCORE_NONE, NodeTest.SCORE_NSWILD, NodeTest.SCORE_QNAME, or NodeTest.SCORE_OTHER.
/** * Execute this pattern step, including predicates. * * * @param xctxt XPath runtime context. * * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST}, * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE}, * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD}, * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}. * * @throws javax.xml.transform.TransformerException */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException { if (xctxt.getIteratorRoot() == xctxt.getCurrentNode()) return getStaticScore(); else return NodeTest.SCORE_NONE; }
Execute the match pattern step relative to another step.
Params:
  • xctxt – The XPath runtime context. NEEDSDOC @param prevStep
Throws:
Returns:NodeTest.SCORE_NODETEST, NodeTest.SCORE_NONE, NodeTest.SCORE_NSWILD, NodeTest.SCORE_QNAME, or NodeTest.SCORE_OTHER.
/** * Execute the match pattern step relative to another step. * * * @param xctxt The XPath runtime context. * NEEDSDOC @param prevStep * * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST}, * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE}, * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD}, * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or * {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}. * * @throws javax.xml.transform.TransformerException */
public XObject executeRelativePathPattern( XPathContext xctxt, StepPattern prevStep) throws javax.xml.transform.TransformerException { XObject score = NodeTest.SCORE_NONE; int context = xctxt.getCurrentNode(); DTM dtm = xctxt.getDTM(context); if (null != dtm) { int predContext = xctxt.getCurrentNode(); DTMAxisTraverser traverser; int axis = m_axis; boolean needToTraverseAttrs = WalkerFactory.isDownwardAxisOfMany(axis); boolean iterRootIsAttr = (dtm.getNodeType(xctxt.getIteratorRoot()) == DTM.ATTRIBUTE_NODE); if((Axis.PRECEDING == axis) && iterRootIsAttr) { axis = Axis.PRECEDINGANDANCESTOR; } traverser = dtm.getAxisTraverser(axis); for (int relative = traverser.first(context); DTM.NULL != relative; relative = traverser.next(context, relative)) { try { xctxt.pushCurrentNode(relative); score = execute(xctxt); if (score != NodeTest.SCORE_NONE) { //score = executePredicates( xctxt, prevStep, SCORE_OTHER, // predContext, relative); if (executePredicates(xctxt, dtm, context)) return score; score = NodeTest.SCORE_NONE; } if(needToTraverseAttrs && iterRootIsAttr && (DTM.ELEMENT_NODE == dtm.getNodeType(relative))) { int xaxis = Axis.ATTRIBUTE; for (int i = 0; i < 2; i++) { DTMAxisTraverser atraverser = dtm.getAxisTraverser(xaxis); for (int arelative = atraverser.first(relative); DTM.NULL != arelative; arelative = atraverser.next(relative, arelative)) { try { xctxt.pushCurrentNode(arelative); score = execute(xctxt); if (score != NodeTest.SCORE_NONE) { //score = executePredicates( xctxt, prevStep, SCORE_OTHER, // predContext, arelative); if (score != NodeTest.SCORE_NONE) return score; } } finally { xctxt.popCurrentNode(); } } xaxis = Axis.NAMESPACE; } } } finally { xctxt.popCurrentNode(); } } } return score; } }