Java XPath Evaluate evaluateNodeListXPath(final Document document, final String expression)

Description

evaluate Node List X Path

License

Open Source License

Declaration

public static List<Node> evaluateNodeListXPath(final Document document, final String expression)
            throws XPathExpressionException 

Method Source Code

//package com.java2s;
/*/*from  w w w . jav a 2s  .c  om*/
 * The MIT License
 * 
 * Copyright (c) 2011, Jesse Farinacci
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.util.LinkedList;
import java.util.List;

import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    private static final XPathFactory XPATH_FACTORY = XPathFactory.newInstance();

    public static List<Node> evaluateNodeListXPath(final Document document, final String expression)
            throws XPathExpressionException {
        return evaluateNodeListXPath(document, compile(expression));
    }

    public static List<Node> evaluateNodeListXPath(final Document document, final XPathExpression expression)
            throws XPathExpressionException {
        notNull(document);
        notNull(expression);

        final List<Node> result = new LinkedList<Node>();

        final NodeList nodeList = (NodeList) expression.evaluate(document, XPathConstants.NODESET);

        for (int node = 0; node < nodeList.getLength(); node++) {
            result.add(nodeList.item(node));
        }

        return result;
    }

    public static XPathExpression compile(final String expression) throws XPathExpressionException {
        notNull(expression);

        return XPATH_FACTORY.newXPath().compile(expression);
    }

    public static void notNull(final Object object) {
        if (object == null) {
            throw new IllegalArgumentException();
        }
    }
}

Related

1. evaluate(String path, Node node)
2. evaluate(XPath xpath, String base, String path, Document document)
3. evaluateAsString(String expression, Node node)
4. evaluateAsString(String expression, Node node)
5. evaluateNodeListTextXPath(final Document document, final String expression)
6. evaluateNodes(final XPathExpression xpathExpression, final Document pom)
7. evaluateNodeSet(XPathExpression xpe, Object item)
8. evaluateXpath(Document doc, String xpath, QName returnType)
9. evaluateXPath(Element element, String xpathstring)