GetDefaultPrefixesCommand.java

package org.deri.grefine.rdf.commands;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.deri.grefine.rdf.app.ApplicationContext;
import org.deri.grefine.rdf.vocab.Vocabulary;
import org.json.JSONWriter;


public class GetDefaultPrefixesCommand extends RdfCommand{

	public GetDefaultPrefixesCommand(ApplicationContext ctxt) {
		super(ctxt);
	}

	@Override
	public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
		response.setCharacterEncoding("UTF-8");
        response.setHeader("Content-Type", "application/json");
        try{
            JSONWriter writer = new JSONWriter(response.getWriter());
            writer.object();
            writer.key("prefixes");
            writer.array();
            for(Vocabulary v:getRdfSchema(request).getPrefixesMap().values()){
            	writer.object();
            	writer.key("name"); writer.value(v.getName());
            	writer.key("uri"); writer.value(v.getUri());
            	writer.endObject();
            }
            writer.endArray();
            writer.endObject();
        } catch (Exception e) {
            respondException(response, e);
        }
	}
	
	

}