Synnefo » Pithos Web Client

/*

 * Copyright 2011-2012 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client;

import com.google.gwt.core.client.GWT;

import com.google.gwt.http.client.Response;

import com.google.gwt.i18n.client.DateTimeFormat;

import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat;

import com.google.gwt.json.client.*;

import gr.grnet.pithos.web.client.Invitations;

import gr.grnet.pithos.web.client.SharingUsers;

import gr.grnet.pithos.web.client.foldertree.AccountResource;

import gr.grnet.pithos.web.client.foldertree.File;

import gr.grnet.pithos.web.client.foldertree.FileVersions;

import gr.grnet.pithos.web.client.foldertree.Folder;

import java.util.Date;

public abstract class Resource {

    protected static String unmarshallString(JSONObject obj, String key) {

        final JSONValue jsonValue = obj.get(key);

        if(jsonValue != null) {

            JSONString s = jsonValue.isString();

            if(s != null) {

                return s.stringValue();

            }

        }

        return null;

    }

    protected static int unmarshallInt(JSONObject obj, String key) {

        final JSONValue jsonValue = obj.get(key);

        if(jsonValue != null) {

            final JSONNumber jsonNumber = jsonValue.isNumber();

            if(jsonNumber != null) {

                return (int) jsonNumber.doubleValue();

            }

        }

        return -1;

    }

    protected static long unmarshallLong(JSONObject obj, String key) {

        final JSONValue jsonValue = obj.get(key);

        if(jsonValue != null) {

            final JSONNumber jsonNumber = jsonValue.isNumber();

            if(jsonNumber != null) {

                return (long) jsonNumber.doubleValue();

            }

        }

        return -1;

    }

    protected static boolean unmarshallBoolean(JSONObject obj, String key) {

        final JSONValue jsonValue = obj.get(key);

        if(jsonValue != null) {

            final JSONBoolean aBoolean = jsonValue.isBoolean();

            if(aBoolean != null) {

                return aBoolean.booleanValue();

            }

        }

        return false;

    }

    protected static Date unmarshallDate(JSONObject obj, String key) {

        final JSONValue jsonValue = obj.get(key);

        if(jsonValue != null) {

            JSONString jsonString = jsonValue.isString();

            if(jsonString != null) {

                try {

                    return DateTimeFormat.getFormat(PredefinedFormat.ISO_8601).parse(jsonString.stringValue());

                }

                catch(IllegalArgumentException e) {

                    GWT.log("", e);

                }

            }

        }

        return null;

    }

    public static native String getDate(Long ms)/*-{

      return (new Date(ms)).toUTCString();

    }-*/;

    @SuppressWarnings("unchecked")

    public static <T> T createFromResponse(Class<T> aClass, String owner, Response response, T result) {

        T result1 = null;

        if(aClass.equals(AccountResource.class)) {

            result1 = (T) AccountResource.createFromResponse(owner, response, (AccountResource) result);

        }

        else if(aClass.equals(Folder.class)) {

            result1 = (T) Folder.createFromResponse(owner, response, (Folder) result);

        }

        else if(aClass.equals(File.class)) {

            result1 = (T) File.createFromResponse(owner, response, (File) result);

        }

        else if(aClass.equals(SharingUsers.class)) {

            result1 = (T) SharingUsers.createFromResponse(response, (SharingUsers) result);

        }

        else if(aClass.equals(FileVersions.class)) {

            result1 = (T) FileVersions.createFromResponse(response);

        }

        else if(aClass.equals(Invitations.class)) {

            result1 = (T) Invitations.createFromResponse(response);

        }

        return result1;

    }

    public abstract Date getLastModified();

}