Mercurial > hg > openjdk > jdk9 > jaxp
view src/java.xml/share/classes/com/sun/org/apache/xalan/internal/extensions/ExpressionContext.java @ 1113:2fdbfbde3bc0
8162572: Update License Header for all JAXP sources
Reviewed-by: lancea
author | joehw |
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date | Mon, 17 Apr 2017 16:24:10 -0700 |
parents | 2bfaf29cc90b |
children |
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/* * reserved comment block * DO NOT REMOVE OR ALTER! */ /* * 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. */ package com.sun.org.apache.xalan.internal.extensions; import javax.xml.transform.ErrorListener; import com.sun.org.apache.xpath.internal.objects.XObject; import org.w3c.dom.Node; import org.w3c.dom.traversal.NodeIterator; /** * An object that implements this interface can supply * information about the current XPath expression context. */ public interface ExpressionContext { /** * Get the current context node. * @return The current context node. */ public Node getContextNode(); /** * Get the current context node list. * @return An iterator for the current context list, as * defined in XSLT. */ public NodeIterator getContextNodes(); /** * Get the error listener. * @return The registered error listener. */ public ErrorListener getErrorListener(); /** * Get the value of a node as a number. * @param n Node to be converted to a number. May be null. * @return value of n as a number. */ public double toNumber(Node n); /** * Get the value of a node as a string. * @param n Node to be converted to a string. May be null. * @return value of n as a string, or an empty string if n is null. */ public String toString(Node n); /** * Get a variable based on it's qualified name. * * @param qname The qualified name of the variable. * * @return The evaluated value of the variable. * * @throws javax.xml.transform.TransformerException */ public XObject getVariableOrParam(com.sun.org.apache.xml.internal.utils.QName qname) throws javax.xml.transform.TransformerException; /** * Get the XPathContext that owns this ExpressionContext. * * Note: exslt:function requires the XPathContext to access * the variable stack and TransformerImpl. * * @return The current XPathContext. * @throws javax.xml.transform.TransformerException */ public com.sun.org.apache.xpath.internal.XPathContext getXPathContext() throws javax.xml.transform.TransformerException; }