OffsetContinuingRequest.java

package mediawiki.request.generic;

import java.util.ArrayList;
import java.util.List;

import javat.xml.Document;
import javat.xml.Element;

import mediawiki.MediaWikiConnection;
import mediawiki.MediaWikiPostRequest;

public abstract class OffsetContinuingRequest<T> extends ContinuingRequest<T> {

	protected OffsetContinuingRequest(String entry, String prefix) {
		super(entry, prefix);
	}
	
	@Override
	public List<T> request(MediaWikiConnection c) throws Exception {
		ArrayList<T> r = new ArrayList<>();
		MediaWikiPostRequest p = new MediaWikiPostRequest(c);
		p.putData(getProperties());
		if(getRequiredParameters() != null)
			p.putData(getRequiredParameters());
		p.putData("continue","");
		Document d = p.requestDocument();
		while(true){
			Element e;
			try{
				e = findGroup(d.getRootElement().getChildren("query").get(0));
			}catch(IndexOutOfBoundsException e2){
				return r;
			}
			if(e == null)
				return r;
			for(Element a : e.getChildren(getEntry())){
				r.add(parse(a));
				if(r.size() >= getLimit())
					return r;
			}
			if(d.getRootElement().getChildren("continue").size() == 0)
				break;
			p.putData(getPrefix()+"offset", d.getRootElement().getChildren("continue").get(0).getAttribute(getPrefix()+"offset").getValue());
			d = p.requestDocument();
		}
		return r;
	}

	
}