TillDAO.java :  » UnTagged » peno3-2010-cwa1 » be » kuleuven » VTKfakbarCWA1 » data » Android Open Source

package be.kuleuven.VTKfakbarCWA1.data;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.io.IOUtils;

import be.kuleuven.VTKfakbarCWA1.model.sales.Till;
import com.google.gson.Gson;
import com.google.gson.JsonParseException;

public class TillDAO {
  
  private final String BASEURL = WebserviceAdressContainer.getInstance().getBASEURL();
  
  public List<Till> listTills() {
    List<Till> returner = new ArrayList<Till>();
    try {
      String json = stringOfUrl(BASEURL + "TillDAO/listTillContents");
      returner = mapTillsToList(json);
    } catch (MalformedURLException e) {
      e.printStackTrace();
    } catch (JsonParseException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return returner;
  }
  
  public boolean addTill(Till tillToAdd) {
    if (tillToAdd != null) {
      try {
        String jsontill = new Gson().toJson(tillToAdd);
        //printTill(merchandiseToAdd);

        HttpClient client = new HttpClient();

        PostMethod method = new PostMethod(BASEURL
            + "TillDAO/addTill");

        method.addParameter("till", jsontill);
        int returnCode = client.executeMethod(method);
        if (returnCode != 200) {
          return false;
        }
        //System.out.println(method.getResponseBodyAsString());
        return true;
      } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (HttpException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
    return false;
  }
  
  public boolean deleteTill(Till tillToDelete) {
    if (tillToDelete != null) {
      Integer tillid = tillToDelete.getId();
      try {
        stringOfUrl(BASEURL + "TillDAO/deleteTill?id=" + tillid);
        //System.out.println(method.getResponseBodyAsString());
        return true;
      } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (HttpException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
    return false;
  }
    
    public String stringOfUrl(String addr) throws IOException {
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        URL url = new URL(addr);
        IOUtils.copy(url.openStream(), output);
        return output.toString();
    }
    
    public String streamToString(InputStream stream) throws IOException {
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        IOUtils.copy(stream, output);
        return output.toString();
    }
    
    private List<Till> merchandiseArrayToList(Till[] array) {
      List<Till> returner = new ArrayList<Till>();
      Collections.addAll(returner, array);
      return returner;
    }
    
    private List<Till> mapTillsToList(String jsonstring) {
      Till[] merchandisemapping = new Gson().fromJson(jsonstring.toString(), Till[].class);
      return merchandiseArrayToList(merchandisemapping);
    }
}