gov.nasa.arc.geocam.memo.service.DjangoMemoImplementation.java Source code

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Here is the source code for gov.nasa.arc.geocam.memo.service.DjangoMemoImplementation.java

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// __BEGIN_LICENSE__
// Copyright (C) 2008-2010 United States Government as represented by
// the Administrator of the National Aeronautics and Space Administration.
// All Rights Reserved.
// __END_LICENSE__

package gov.nasa.arc.geocam.memo.service;

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 + ")");
        }
    }
}