Client Side Xpath

gistfile1.txt

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;

public class PageSource {

    private final XPath xpath = XPathFactory.newInstance().newXPath();

    private String pageSource;

    public PageSource(String pageSource) {
        this.pageSource = pageSource;
    }

    public String getTextFromNode(String xpathExpression) {
        xpathExpression = Localizer.localize(xpathExpression);

        try {
            return (String) this.xpath.evaluate(xpathExpression, new InputSource(new StringReader(pageSource.replaceAll("\\r|\\n", ""))), XPathConstants.STRING);
        } catch (XPathExpressionException e) {
            throw new RuntimeException(e);
        }
    }

    public Node getNode(String xpathExpression){
        xpathExpression = Localizer.localize(xpathExpression);

        try {
            return (Node) this.xpath.evaluate(xpathExpression, new InputSource(new StringReader(pageSource)), XPathConstants.NODE);
        } catch (XPathExpressionException e) {
            throw new RuntimeException(e);
        }
    }

    public NodeList getNodes(String xpathExpression){
        xpathExpression = Localizer.localize(xpathExpression);

        try {
            return (NodeList) this.xpath.evaluate(xpathExpression, new InputSource(new StringReader(pageSource)), XPathConstants.NODESET);
        } catch (XPathExpressionException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public String toString() {
        return pageSource;
    }
}