UtilizeDataType.java

package kr.ac.kaist.resl.lilliput.rest;

import java.util.Collection;
import java.util.Iterator;

import org.json.JSONException;
import org.json.JSONObject;
import org.restlet.ext.json.JsonRepresentation;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;

import com.mongodb.MongoException;

import edu.stanford.smi.protege.model.Project;
import edu.stanford.smi.protege.server.RemoteProjectManager;
import edu.stanford.smi.protegex.owl.model.OWLDatatypeProperty;
import edu.stanford.smi.protegex.owl.model.OWLModel;
import edu.stanford.smi.protegex.owl.model.RDFIndividual;

public class UtilizeDataType extends ServerResource {
	
	@SuppressWarnings("rawtypes")
	@Get("json")
	public JsonRepresentation toJson() throws JSONException {
		try {
			String targetEpc = (String)getRequest().getAttributes().get("ind_name");
			String datatypeProperty = (String)getRequest().getAttributes().get("property");
			String type = getQuery().getValues("type");
			if( type == null )
			{
				JSONObject returnJson = new JSONObject();
				returnJson.put("system_message", "additional parameter 'type' is needed where 'type' is one of 'get', 'put'");
				JsonRepresentation representation = new JsonRepresentation(returnJson);
				return representation;
			}			
			String value = getQuery().getValues("value");
			if( type.equals("put") && value == null )
			{
				JSONObject returnJson = new JSONObject();
				returnJson.put("system_message", "additional parameter 'value' is needed when 'type' value is 'put'");
				JsonRepresentation representation = new JsonRepresentation(returnJson);
				return representation;
			}
			RemoteProjectManager rpm = RemoteProjectManager.getInstance();
			Project p = rpm.getProject("localhost:5100", "Lilliput", "1234", "IoTSocialGraph", true);
			OWLModel owlModel = (OWLModel)p.getKnowledgeBase();
			RDFIndividual targetInd = owlModel.getOWLIndividual(targetEpc);
			
			OWLDatatypeProperty prop = owlModel.getOWLDatatypeProperty(datatypeProperty);
			
			if( type.equals("get"))
			{
				if( targetInd.getPropertyValue(prop) != null )
				{
					String retVal = targetInd.getPropertyValue(prop).toString();
					JSONObject returnJson = new JSONObject();
					returnJson.put("datatype_value", retVal);
					JsonRepresentation representation = new JsonRepresentation(returnJson);
					p.dispose();
					return representation;	
				}
				else
				{
					JSONObject returnJson = new JSONObject();
					returnJson.put("system_message", "Null");
					JsonRepresentation representation = new JsonRepresentation(returnJson);
					p.dispose();
					return representation;	
				}
				
			}
			else if( type.equals("put"))
			{
				//����Ʈ ����
				targetInd.setPropertyValue(prop, value);
				p.dispose();
				JSONObject returnJson = new JSONObject();
				returnJson.put("system_message", "Done");
				JsonRepresentation representation = new JsonRepresentation(returnJson);
				return representation;
			}
			
		} catch (MongoException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 
		JSONObject returnJson = new JSONObject();
		returnJson.put("system_message", "error occured");
		JsonRepresentation representation = new JsonRepresentation(returnJson);
		return representation;
	}
}