How to be more specific in XML Parsing?

Question

I need to extract the value from "condition" but the one that's under "current_conditions". Here is the code I have right now. It extracts value from condition but from "forecast_conditions". By the way i'm using SAXParser.

if (localName.equals("condition")) {
    String con = attributes.getValue("data");
    info.setCondition(con);
}

Here is the XML.

<current_conditions>
    <condition data="Clear"/>        
</current_conditions>

<forecast_conditions>
    <condition data="Partly Sunny"/>
</forecast_conditions>

see this one http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser — Zaz Gmy, Apr 26 '12 at 05:34

score 1 · Answer 1 · answered Apr 26 '12 at 04:53

1

Which parser do you use? If you use XmlPullParser (or any SAX style parser), you can set a flag when you encounter current_conditions START_TAG and check whether this flag is set when you check for condition. Don't forget to reset the flag when you encounter current_conditions END_TAG.

answered Apr 26 '12 at 04:53

Rajesh

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I use SAXParser. How do I set a flag? – MikeC Apr 26 '12 at 16:34

score 0 · Answer 2 · answered Apr 26 '12 at 07:44

I'll second XmlPullParser - it's very easy to understand.

Here is some code for you case (not tested)

public void parser(InputStream is) {
    XmlPullParserFactory factory;
    try {
        factory = XmlPullParserFactory.newInstance();
        factory.setNamespaceAware(true);
        XmlPullParser xpp = factory.newPullParser();
        xpp.setInput(is, null);

        boolean currentConditions = false;
        String curentCondition;

        int eventType = xpp.getEventType();
        while (eventType != XmlPullParser.END_DOCUMENT) {
            if (eventType == XmlPullParser.START_TAG) {
                if (xpp.getName().equalsIgnoreCase("current_conditions")) {
                currentConditions = true;
                } 
                else if (xpp.getName().equalsIgnoreCase("condition") && currentConditions){
                    curentCondition = xpp.getAttributeValue(null,"Clear");
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (xpp.getName().equalsIgnoreCase("current_conditions"))
                    currentConditions = false;
            } else if (eventType == XmlPullParser.TEXT) {
            }
            eventType = xpp.next();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

How to be more specific in XML Parsing?

2 Answers2