How to read the WebMaster field with Rome

Question

I am trying to use ROME to parse an RSS feed like this:

url = new URL("http://www.rssboard.org/files/sample-rss-2.xml");
XmlReader reader = new XmlReader(url);
SyndFeedInput input = new SyndFeedInput();
SyndFeed feed = input.build(reader);
System.out.println(feed.getAuthor());

However, I cannot find a method to get the "WebMaster" field or any other customized field.

I have read about the custom modules in Rome from here, but I couldn't figure out how to use it. I create a similar SamplleModule, SampleModuleImpl, and SampleModule Parser for webMaster field, but I don't know how to use it!

This the classes that I have implemented: SamplleModule:

public interface SampleModule extends Module {

        public static final String URI = 
"http://www.rssboard.org/files/sample-rss-2.xml";

    public String getWebMaster();

    public void setWebMaster(String webMaster);

}

SampleModuleImpl:

public class SampleModuleImpl extends ModuleImpl implements SampleModule {

    private static final long serialVersionUID = 1L;
    private String _webMaster;

    protected SampleModuleImpl() {
        super(SampleModule.class, SampleModule.URI);

    }

    @Override
    public void copyFrom(Object obj) {
        SampleModule sm = (SampleModule) obj;
        setWebMaster(sm.getWebMaster());

    }

    @Override
    public Class getInterface() {
        return SampleModule.class;
    }


    @Override
    public String getWebMaster() {
        return _webMaster;
    }

    @Override
    public void setWebMaster(String webMaster) {
        _webMaster = webMaster;

    }

}

and SampleModuleParser:

public class SampleModuleParser implements ModuleParser {

    private static final Namespace SAMPLE_NS = Namespace.getNamespace("sample",
            SampleModule.URI);

    @Override
    public String getNamespaceUri() {
        return SampleModule.URI;
    }

    @Override
    public Module parse(Element dcRoot) {
        boolean foundSomething = false;
        SampleModule fm = new SampleModuleImpl();

        Element e = dcRoot.getChild("webMaster");
        if (e != null) {
            foundSomething = true;
            fm.setWebMaster(e.getText());
        }

        return (foundSomething) ? fm : null;
    }

}

I have also added these module to rome.properties. I just don't know how to use them in my reader method. Any idea folks?

where in rome.properties did you add it? Make sure you're setting it for the ModuleParser element for the version of RSS you are trying to parse. — Rick Mangi, Jul 10 '13 at 18:11
That's not the problem. The question is what should I add to my code to have the "getWebMaster" method? I mean to my first code. — Afshin Moazami, Jul 10 '13 at 18:15

score 0 · Answer 1 · answered Jul 10 '13 at 19:19

take a look here for an example of how do to this with the MRSS module:

http://ideas-and-code.blogspot.com/2009/07/media-rss-plugin-for-rome-howto.html

Basically you take a SyndEntry object and using the namespace for your module you get an instance of your module object from the entry if one exists, so in your case:

    SampleModule myModule = (SampleModule)e.getModule( SampleModule.URI );

And then you can use it. I use groovy with rome for my parser and do things like this:

def mediaModule = entry.getModule("http://search.yahoo.com/mrss/")
if(mediaModule) {
mediaModule.getMediaGroups().each { group ->
     group.contents.each { content ->
        if(content.type != null && content.type.startsWith("image")) {
        log.info "got an image"
        String imgUrl = content.getReference().toString()
        post.images.add(new MediaContent(type:'image',url:imgUrl))
        }
     }
    }
}

HTH

How to read the WebMaster field with Rome

1 Answers1