import org.w3c.dom.Document;
import org.w3c.dom.NodeList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.net.URL;

public class RSSParser {

    private Feed feed = new Feed();
    private URL url;
    private String noteName;

    public RSSParser(URL url) {
        this.url = url;
    }

    public void RSSFeed() {
        try {
            DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
            Document doc = builder.parse(url.openStream());

            NodeList object = doc.getElementsByTagName("item");
            NodeList partOfObject = doc.getElementsByTagName(noteName);
            for(int i = 0; i<object.getLength(); i++){
                noteName = "title";
                feed.setTitle(partOfObject.item(0).getFirstChild().getNodeValue());
                noteName = "description";
                feed.setDescription(partOfObject.item(0).getFirstChild().getNodeValue());
                noteName = "author";
                feed.setAuthor(partOfObject.item(0).getFirstChild().getNodeValue());
                noteName = "link";
                feed.setAuthor(partOfObject.item(0).getFirstChild().getNodeValue());
                feed.entries.add(feed.toString());
            }
        } catch (Exception e) {
            System.out.println("Blad przy parsowaniu adresu URL.");
            System.out.println(e.getMessage());
        }
    }
}