Question

i am very new in blackberry, now i am trying to do XML programming, using defaulthandler in sax parser blackberry.

any sample code, url or any advice highly appreciated.

thanks

Regards..

Answer 1

Find the sample code here. Cheers. 😉

// IBMRssXMLHandler.java
//
// MSI Services, Inc.
// Frank Ableson
// 973.448.0070
// [e-mail]
// code free to use for any purpose, commercial or otherwise

package com.msi.ibm.rssreader;

import org.xml.sax.helpers.*;
import org.xml.sax.*;
import java.lang.StringBuffer;

import com.msi.ibm.rssreader.IBMRssStorage.*;

/**
 * 
 */
class IBMRssXMLHandler extends DefaultHandler {
    StringBuffer sb = null;
    IBMRssFeed _feed = null;
    IBMRssItem item = null;
    boolean bStarted = false;

    IBMRssStorage rssStore = null;

    IBMRssXMLHandler(IBMRssFeed feed) {
        _feed = feed;
        rssStore = new IBMRssStorage();
    }

    public void warning(SAXParseException e) {
        System.err.println("warning: " + e.getMessage());
        bStarted = false;
    }

    public void error(SAXParseException e) {
        System.err.println("error: " + e.getMessage());
    }

    public void fatalError(SAXParseException e) {
        System.err.println("fatalError: " + e.getMessage());
        bStarted = false;
    }

    public void startDocument() throws SAXException {
        System.out.println("startDocument");
    }

    public void endDocument() throws SAXException {
        System.out.println("endDocument");
        // we've concluded this document, safe to create the feed.
        rssStore.closeStore();
    }

    public void startElement(String namespaceURI, String localName,
            String qName, Attributes atts) throws SAXException {
        System.out.println("startElement [" + localName + "]");// Attributes
                                                                // [" + atts.toString() + "]");
        sb = new StringBuffer("");
        if (localName.equals("item")) {
            bStarted = true;
            // new item, let's set up!
            item = rssStore.createItem();
        }
    }

    public void endElement(String namespaceURI, String localName, String qName)
            throws SAXException {
        System.out.println("endElement [" + localName + "] value = ["
                + sb.toString() + "]");

        if (bStarted == false)
            return;

        if (localName.equals("item")) {
            // store this item!
            item.setName(_feed.getName());
            System.out.println("Storing item! [" + item.toString());

            rssStore.addRecord(item);

        }
        if (localName.equals("title")) {
            item.setTitle(sb.toString());
        }

        if (localName.equals("link")) {
            item.setLink(sb.toString());
        }

        if (localName.equals("description")) {
            item.setDescription(sb.toString());
        }

        if (localName.equals("category")) {
            item.setCategory(sb.toString());
        }

        if (localName.equals("pubDate")) {
            item.setPubDate(sb.toString());
        }

        sb = new StringBuffer("");

    }

    public void characters(char ch[], int start, int length) {
        String theString = new String(ch, start, length);
        System.out.println("characters [" + theString + "]");
        sb.append(theString);
    }

}