Android Open Source - geocamMemoForAndroid Django Memo Implementation

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Back to project page geocamMemoForAndroid.

License

The source code is released under:

NASA OPEN SOURCE AGREEMENT VERSION 1.3 THIS OPEN SOURCE AGREEMENT ("AGREEMENT") DEFINES THE RIGHTS OF USE, REPRODUCTION, DISTRIBUTION, MODIFICATION AND REDISTRIBUTION OF CERTAIN COMPUTER SOFTWARE ORI...

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Java Source Code

package gov.nasa.arc.geocam.memo.service;
//w  ww  . ja  va2  s  .  c  om

import gov.nasa.arc.geocam.memo.R;
import gov.nasa.arc.geocam.memo.bean.GeoCamMemoMessage;
import gov.nasa.arc.geocam.memo.exception.AuthenticationFailedException;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;

import org.apache.http.client.ClientProtocolException;

import roboguice.inject.InjectResource;
import android.content.Context;

import com.google.inject.Inject;
import com.google.inject.Provider;

/**
 * Implementation of the {@link DjangoMemoInterface} meant to interface with the Django server.
 */
public class DjangoMemoImplementation implements DjangoMemoInterface{

  /** The json converter. */
  @Inject DjangoMemoJsonConverterInterface jsonConverter;
  
  /** The server root url. */
  @InjectResource(R.string.url_server_root) String serverRootUrl;
  
  /** The path for the application server. */
  @InjectResource(R.string.url_relative_app) String appPath;
  
  /** The path for the Memo homepage. */
  @InjectResource(R.string.url_message_list) String memoMessagesJson;
  
  /** The path for the create memo page. */
  @InjectResource(R.string.url_create_message) String createMemoMessageJson;
  
  /** The context provider. */
  @Inject protected static Provider<Context> contextProvider;
  
  /** The site auth implementation. */
  @Inject SiteAuthInterface siteAuthImplementation;
  
  /* (non-Javadoc)
   * @see gov.nasa.arc.geocam.memo.service.DjangoMemoInterface#getMemos()
   */
  @Override
  public List<GeoCamMemoMessage> getMemos() throws ClientProtocolException, AuthenticationFailedException, IOException {
    //String jsonString = 
    //  "[{\"authorUsername\": \"rhornsby\", \"longitude\": -122.057954, \"content\": \"Structural engineer not allowing access to building. Fire is too out of control. Fire squad alerted.\", \"contentTimestamp\": \"03/13/11 10:48:44\", \"latitude\": 37.411629, \"messageId\": 15, \"accuracy\":60.0}]";
    String jsonString = null;
    
    jsonString = siteAuthImplementation.get(memoMessagesJson, null);
        
    return jsonConverter.deserializeList(jsonString);
  }

  /* (non-Javadoc)
   * @see gov.nasa.arc.geocam.memo.service.DjangoMemoInterface#setAuth(java.lang.String, java.lang.String)
   */
  @Override
  public void setAuth(String username, String password) {
    siteAuthImplementation.setAuth(username, password);    
  }

  /* (non-Javadoc)
   * @see gov.nasa.arc.geocam.memo.service.DjangoMemoInterface#createMemo(gov.nasa.arc.geocam.memo.bean.GeoCamMemoMessage)
   */
  @Override
  public void createMemo(GeoCamMemoMessage message) throws ClientProtocolException, AuthenticationFailedException, IOException {
    HashMap<String,String>map = new HashMap<String,String>();
    map.put("message", jsonConverter.serialize(message));
    int responseCode = siteAuthImplementation.post(createMemoMessageJson, map);
    if(responseCode != 200)
    {
      throw new ClientProtocolException("Message could not be created (HTTP error "+responseCode+")");
    }
  }
}

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