Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
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 {
    /**
     * Performs a xpath query on a document and returns the matching nodelist.
     *
     * @param doc
     * @param xpathQuery
     * @return nodelist of matches
     * @throws Exception
     */
    public static NodeList query(Document doc, String xpathQuery) throws Exception {
        NodeList result = null;
        // prepare XPath
        XPath xpath = XPathFactory.newInstance().newXPath();

        try {
            // query xml
            result = (NodeList) xpath.evaluate(xpathQuery, doc, XPathConstants.NODESET);
        } catch (XPathExpressionException xpx) {
            throw new Exception("Error evaluating XPath: " + xpx.getMessage(), xpx);
        }
        return result;
    }

    /**
     * Performs a xpath query on a document and returns the matching nodelist.
     *
     * @param context the Context where to start with the query
     * @param query the XPath-Query
     * @return nodelist of matches
     * @throws Exception on error
     */
    public static NodeList query(Node context, String query) throws Exception {
        NodeList result = null;
        XPath xpath = XPathFactory.newInstance().newXPath();

        try {
            result = (NodeList) xpath.evaluate(query, context, XPathConstants.NODESET);
        } catch (XPathExpressionException xpx) {
            throw new Exception("Error evaluating XPath: " + xpx.getMessage(), xpx);
        }
        return result;
    }
}