1. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976-6367(Print),
INTERNATIONAL JOURNAL OF COMPUTER ENGINEERING &
ISSN 0976 - 6375(Online), Volume 4, Issue 6, November - December (2013), © IAEME
TECHNOLOGY (IJCET)
ISSN 0976 – 6367(Print)
ISSN 0976 – 6375(Online)
Volume 4, Issue 6, November - December (2013), pp. 262-268
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ANALYSIS AND DEVELOPMENT OF A SERVICE MASH UP
APPLICATION FOR MOBILE USERS
Dr. Atul M. Gonsai1, Mr Rushi R. Raval2
1
Assistant Professor, Department of Computer Science,
Saurashtra University, Rajkot
2
Assistant Professor, Dept. of M.Sc. (IT&CA), GK&CK Bosamia College, Jetpur,
(Affiliated with Saurashtra University)
ABSTRACT
Mash ups enables user to develop a new application based on a configuration of contents
retrieved from external applications or services, and it is gaining drive as a means to develop
requirement based Web applications by combining different resources such as web services, data
feeds and user interfaces. But, current and future trends are for mobile or smart phone. smart-phone
contains more personal data such as Contacts, audios, videos, and GPS based location information,
with which user can create, unconventional and logical mash up applications for different areas
such as internet marketing, social networking, Entertainment, and e-commerce. We develop a service
mash up application for mobile clients which enables users to get information such as location based
services, with using Google Map API v2 and android as a platform.
Keywords: Mash up, Web service, Google Map API v2, Yahoo pipes, Mobile App,
Android Platform, Web API
I. INTRODUCTION
Current web development, a mash up is a web page or application that combines functionality
and/or data from two or more external sources such as RSS feeds, Web services, content bound from
third party web sites, or public APIs to create a new service or application. The term mash up implies
fast integration, easy, more user friendly nature.
There have been significant improvements on Web-oriented programming technologies, such
as JavaScript [1], and Silverlight [2]. With use of these programming technologies, numerous web
services provide an open APIs (Application Programming Interfaces) to enable user-generated
dynamic web applications or services. For e.g., Google maps provides open APIs, like as event
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2. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976-6367(Print),
ISSN 0976 - 6375(Online), Volume 4, Issue 6, November - December (2013), © IAEME
handling, location based management, object controlling and overlapping functions, to deploy
objects on the map. These types of open APIs can enable a user to combine multiple useful sources
from multiple web sites on a single web page. These types of web based applications are known as
Web mash up application or mash up services.
Currently, the quantity of mobile mash up applications develops rapidly with firm mobile
computing development. Present mobile phones sensing supports (e.g., Infrared, and barcode
readers), and multi-media (e.g. Audio/Video playback and Camera), and communication part (e.g.
EDGE, Wi-Fi, GPRS, Bluetooth, and UMTS) capabilities are model responsive mediators with
which users can achieve information for mash up applications.
II. RELATED WORK
There are some actions to gather open API information to deliver possible mash up grouping
to the users. For e.g. the mash up matrix [3] delivers the option of connectable mash up services to a
user. However, this matrix just provides the 2-dimensional connectivity. If a user wants to combine
multiple bases, several traverses are prerequisite to identify the feasibility of mash up services.
Another e.g., of a Mobile Mash up might be when people are sense interested about what
exactly is happening on the other side of the world. How does it look like? What kind of pictures
people take there? Or, at what time the sun rises? A Mobile mash up that isolates this location on
Google Maps, displays sun-setting and sun-rising information from a meteorological service and
shows user generated pictures taken from Flickr (provide picture galleries available with chat, social
networking, photo ratings, and groups), can help them substantial this curiosity. The Mash up could
use mobile's geo graphical location to get the information of the “antipodes”. When users; location
changes, so does their antipodes and thus the information on the Mash up. Giving the nature of this
Mash up, we will call it simply “Antipodes”.
III.
CHALLENGE AND PROBLEM DEFINITION
Mobile users are referred as a “thin clients” [4] with limited processing power and with
limited resources. The limitations are central to mobility issues and not just the inadequacies of
current technology [5]. For ex., a service mash up involves parsing and combining different
web services results requiring a lot of computation. The challenges are minimising the data
processing task on mobile users and extending processing power beyond mobile users.
Furthermore, many mobile platforms do not include necessary libraries for SOAP web services.
In general view, if mobile users want any kind of information they have to connect with
internet or use application. In both cases mobile / smart-phone have suffered with limited processing
power as well as with limited resources/functionality. Some other problems may include privacy. It
may be likely that user specific modelling research in these areas will be appropriate to personalised
mash ups.
IV.
IDEA OF SERVICE MASH UP PLATFORM
Service mash up let mobile users to merge different services. Though, service mash up
requires communication with web services and processing power. Reason of the resources
limitation (energy consumption, processing power, s/w libraries) of mobile users, it is inept to
do service mash up on the mobile users. The middle-ware provides a Personal Mash up
Platform which does service mash up for the mobile users. The platform has broad interfaces for
defining and consuming web services. However, the services are stored on the middle-ware and
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3. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976-6367(Print),
ISSN 0976 - 6375(Online), Volume 4, Issue 6, November - December (2013), © IAEME
can be connected to form a work-flow (a mash up service) which provides possibility to caching
intermediate service results.
V. WEB SERVICE COMPOSITION AND MASH UP
Web services are mainly derived from the service-oriented architecture that is, based on
Service-Oriented Computing (SOC). S.O.C. [6] is a computing model that consumes services as
essential fundamentals for developing applications. In S.O.C., services are separate, platform in
dependent computational objects that can be used in a platform independent method [7]; hence new
services can be composited from existing services with low or free cost. There are presently two
styles of combining web services, light-weighted web services mash up and the formal web services
composition.
There are numerous approaches to web services composition such as Web Component [8],
Semantic Web (OWL-S) [9] and BPEL (J) [10]. According to the review of Liu et al. [11], all of
them familiarize robust outlays (developer skill and supporting infra-structure). Though, this
research focuses on a light-weighted approach to service conformations, web services mash ups [12]
which “typically serve an unambiguous situational necessity (short-live) and are composed of the
latest, easy-to-use web technologies such as, RSS, Restful web service, and Atom feeds).”
One subclass of web services mash up is Enterprise Mash up (EM) [13] which is a, standard
that “end-users are authorized to adapt their individual business to their individual and varied
requests”. Figure: - 1, shows the two styles of E.M., wiring and piping. Hoyer and Fischer [14] also
characterized mash up tools in the marketplace based on their functionality and target group.
• Widget is, a graphical edges which provides simple user interaction intellectualizing from the
underlying resources. Wiring inter connects visually input and output parameters of widgets,
which requires no programming skill at all.
• Resource is, the actual content, data, or application which rendering interface as Web services, web
open API, and other. Piping adds resources to processing chain/graph by directing output of one
resource to input of next resource.
Figure 1: Enterprise mash up (wiring v/s piping) [15]
Piping frequently contains Domain Specific Language (DSL) [16]. Maximilien, Ranabahu
[17] intended an online platform for service mash up based on DSL. Users can create and share mash
up services using web browsers interface. The core of the platform is a DSL Engine which can
generate a Ruby on Rail application from the DSL code defined users. The DSL supports three
essential functions in defining service mash up, data mediation, process/protocol mediation, and user
interface customization.
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ISSN 0976 - 6375(Online), Volume 4, Issue 6, November - December (2013), © IAEME
The idea of mobile mash ups has gained popularity recently. Xu, Song [18] developed a mash
up platform for mobile devices based on aspect-oriented programming technology. The key feature
of the platform is the mash up management framework which monitors and controls mash up
execution. Both execution status and performance is monitored and compared to expecting quality of
service defined by Service Level Agreement (SLA). The adaptive engine then optimizes or resolves
the quality of service problems, for e.g., replacing composed services.
Web service mash up shares certain advantages over the formal web service composition
method, since a web service mash up requires less programming skills and overhead. Mash ups can
be achieved by either wiring at the interface/widget level or piping at the resource/service level. The
proposed mash up platform supports “piping” mash ups. The piping and QoS management is done on
the middleware, but the interface for defining a mash up service is on mobile client.
VI.
DEVELOPMENT OF A SERVICE MASH UP
On the mobile user side, the middle ware has a user interface which lets users define a mash
up services. The middle ware has a service storage which stores user defined service data and an
execution engine which performs web services and pipes input and output of web services. So as to
support a service mash up, the middle ware must first support consuming existing web services.
Specific web service calls are pre-defined by users using the mobile client and stored in the servicestorage for upcoming accomplishment. The following gives a user state of how to consume a web
services from the mobile user through the middle ware.
We are open-handed some user scenario, such as User1 is a mash up service developer. He
wants to know all the forthcoming events in his city using his mobile phone. He knows that Yahoo
Upcoming (Restful web service) offers such service and reads its online API document which
describes how the service is used (e.g., providing co-ordinates as a parameters). Over the user
interface on the mobile user, he then defines a mash up service (task) which contains a service action
with all the required parameter and desired results. Finally, he executes the mash up service and gets
the result displayed on the mobile user.
Another user scenario is, if User2 wants to know where he is going or at what location he
wants to reach then he can able to view live map location which is based on Google API features [19]
[20] and also add some mark symbol to remember that points or location with use of mash up
application (task). At the result point-of-view user can execute app on their android based smartphone and gets the map after that user can add marking point with use of touch screen and the get
suitable result for his discriminatory location with use of different Google map types such as Normal
and Hybrid. For development of this mobile app, we are using android 2.2 platforms with eclipse
tool using Helios service release 2 versions. We have also used Google map API to connect live map
location with use of smart-phone device.
To create this mobile mash up app we have follow below steps:
-
-
Download Android SDK bundle (Eclipse, ADT Plugin, Android Platform Tools, Android SDK
Tools,
The
latest
Android
system
image
for
the
emulator)
from
http://developer.android.com/index.html
Create My App project in to the eclipse IDE
Download Google Play Service
Import Google Play Service library
Upgrade My App to show map
Define <uses-permission> into My App activity manifest file
Add UI and fragment controls in main.xml file
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5. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976-6367(Print),
ISSN 0976 - 6375(Online), Volume 4, Issue 6, November - December (2013), © IAEME
-
Go to the Google API Console and grab the Google API key
Configure Android Key for API Project
Generate MD5 and SHA1 key for android app with use of “keytool” command from command
prompt
- Take SHA1 key in Google API console and generate new android application key
- Now take new generated android application key and put into My App manifest file
- Create map fragment activity, Google Map object and also generate onMapClick event as well
as setOnMapClickListener for getting latitude and longitude location for users
- Add interactive different touch feature like Add multiple marker, Zoom-In, Zoom-Out, Map
Tagging (mash up the app)
- User can also able to view their location in normal Google map or in hybrid Google map
Figure 2 shows the process with a sequence of screenshots on the mobile client.
With use of Normal Google Map
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6. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976-6367(Print),
ISSN 0976 - 6375(Online), Volume 4, Issue 6, November - December (2013), © IAEME
With use of Hybrid Google Map
Figure 2: Live Map on Android based Smart-phone with use of Google Map API
VII.
CONCLUSIONS
In this paper, we were doing analysis for mash up applications as services on web platform as
well as on mobile/smart-phones platform; moreover we propose idea of service platform for mash up
application for android mobile users, and we implement the service mash up app for smart-phone
users on the android based mobile devices to show the feasibility of our proposed service mash up
platform app.
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