src/java.xml/share/classes/com/sun/org/apache/xpath/internal/functions/FuncCurrent.java
author joehw
Wed, 18 Oct 2017 13:25:49 -0700
changeset 47359 e1a6c0168741
parent 47216 71c04702a3d5
child 48409 5ab69533994b
permissions -rw-r--r--
8181150: Fix lint warnings in JAXP repo: rawtypes and unchecked Reviewed-by: lancea, rriggs, mullan
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/*
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 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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 * @LastModified: Oct 2017
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 */
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/*
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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * contributor license agreements.  See the NOTICE file distributed with
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 * this work for additional information regarding copyright ownership.
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 * The ASF licenses this file to You under the Apache License, Version 2.0
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 * (the "License"); you may not use this file except in compliance with
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 * the License.  You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.sun.org.apache.xpath.internal.functions;
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import com.sun.org.apache.xalan.internal.res.XSLMessages;
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import com.sun.org.apache.xalan.internal.res.XSLTErrorResources;
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import com.sun.org.apache.xml.internal.dtm.DTM;
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import com.sun.org.apache.xml.internal.utils.QName;
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import com.sun.org.apache.xpath.internal.XPathContext;
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import com.sun.org.apache.xpath.internal.axes.LocPathIterator;
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import com.sun.org.apache.xpath.internal.axes.PredicatedNodeTest;
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import com.sun.org.apache.xpath.internal.axes.SubContextList;
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import com.sun.org.apache.xpath.internal.objects.XNodeSet;
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import com.sun.org.apache.xpath.internal.objects.XObject;
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import com.sun.org.apache.xpath.internal.patterns.StepPattern;
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import java.util.List;
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/**
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 * Execute the current() function.
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 * @xsl.usage advanced
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 */
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public class FuncCurrent extends Function
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{
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    static final long serialVersionUID = 5715316804877715008L;
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  /**
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   * Execute the function.  The function must return
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   * a valid object.
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   * @param xctxt The current execution context.
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   * @return A valid XObject.
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   *
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   * @throws javax.xml.transform.TransformerException
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   */
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  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
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  {
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    SubContextList subContextList = xctxt.getCurrentNodeList();
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    int currentNode = DTM.NULL;
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    if (null != subContextList) {
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        if (subContextList instanceof PredicatedNodeTest) {
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            LocPathIterator iter = ((PredicatedNodeTest)subContextList)
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                                                          .getLocPathIterator();
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            currentNode = iter.getCurrentContextNode();
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         } else if(subContextList instanceof StepPattern) {
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           throw new RuntimeException(XSLMessages.createMessage(
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              XSLTErrorResources.ER_PROCESSOR_ERROR,null));
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         }
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    } else {
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        // not predicate => ContextNode == CurrentNode
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        currentNode = xctxt.getContextNode();
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    }
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    return new XNodeSet(currentNode, xctxt.getDTMManager());
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  }
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  /**
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   * No arguments to process, so this does nothing.
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   */
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  public void fixupVariables(List<QName> vars, int globalsSize)
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  {
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    // no-op
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  }
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}