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MOBILIZING ORACLE APPLICATIONS ERP
An Approach for Building Scalable Mobility Solutions
A RapidValue Solutions Whitepaper
©RapidValue Solutions 0202-2-
TABLE OF CONTENTS
Executive Overview
Typical Architecture for Mobilizing Oracle Applications ERP Modules
Integrated SOA Gateway
Server Middle Layer
Mobile Client Application
Key Benefits of a Middle Layer
Enabling Integrated SOA Gateway and Publishing Web Services
Options for Building Mobile Client Applications
Native Apps
Cross-Platform Apps
Mobile Web Apps
Oracle ADF Mobile
Key Steps: Designing Mobile Applications Integrated with Oracle E-Business Suite
Requirements and Strategy
Oracle SOA Design and Build
Mobile Client Application Design and Build
Case Study: Building a Field Service App on Oracle Applications ERP
Requirements
Solution
Appendix: Generating Web Services in an Integrated SOA Gateway
Custom Interface Package for Creating WSDL
Generating Web Services in Oracle
Generated WSDL Example
About RapidValue
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EXECUTIVE OVERVIEW
Enterprises are recognizing the importance of extending
their ERP(Enterprise Resource Planning) systems to mobile
devices and providing employees with access to internal
systems while on the move. This paper examines the
approaches for extending Oracle E-Business Suite ERP
modules to mobile. It describes the overall architecture and
solution, and includes an example of extending the Oracle
Applications Field Service module to mobile. In the
example, a mobile application is built on the Android
platform to leverage the capabilities of the mobile device.
Oracle Integrated SOA module is leveraged to expose web services to outside the firewall. Web services can be
generated using pre-built packages or custom packages so as to enable required behavior of the mobile
application. A middle layer is introduced to ensure security and mobile device management capabilities. The
middle layer ensures that the ERP system is not exposed to outside the firewall to protect the system and its
data.
Once web services for requisite functions are exposed, mobile client application can be developed using multiple
options: native, cross-platform and mobile web. The technology used depends on business requirements for
usability, functionality and the long-term technology roadmap. Oracle ADF Mobile is an excellent option for
extending Oracle Applications modules, as it fits well into the overall architecture stack. To select the right
approach for developing the mobile client platform, please refer to our white paper: “How to Choose the Right
Architecture for your Mobile Application” at http://www.rapidvaluesolutions.com/whitepaper/
Enterprise mobility has
transformed the way businesses engage
with their customers, partners and staff,
using innovative applications that
enhance and accelerate the exchange of
critical information. However, mobile
applications are only part of the overall
solution – integration with existing
systems in a scalable manner is equally
important and challenging.
©RapidValue Solutions 0202-3-
TYPICAL ARCHITECTURE FOR MOBILIZING ORACLE
APPLICATIONS ERP MODULES
The diagram below illustrates key architectural components involved in mobilizing Oracle Applications. The main
components include:
– Integrated Service-Oriented Architecture (SOA) Gateway – a core component of Oracle
Applications, allows service enabling of PL/SQL integration interfaces and deploys them as web services.
– Middle Layer – a custom integration layer that provides security and some mobile device management
(MDM) capabilities. The middle layer can also be integrated with a standard MDM package that provides
security features. This is an optional layer in the architecture; however this layer increases scalability and
security considerably.
– Mobile Client Application – can be built as a native application, hybrid application or a mobile web
application. The mobile client interacts with the ERP modules leveraging web services exposed through
the Integrated SOA Gateway module.
Create/Update
Service Request
Internal Firewall
A p p l i c a t i o n s
http/s http/s
External Firewall
Device
provisioning /
management
Mobile
Client
App
Mobile
Client
App
Push
notifications/
Messaging
Security
features like
remote wipe
Data
synchronization
components
Create/Update
Debrief
Create/Update
Task
INTEGRATED
SOA GATEWAY
ERP
DMZ
MIDDLE LAYER
Architecture for Mobilizing Oracle Applications
1 2 3
WSDL
WSDL
WSDL
©RapidValue Solutions 0202-4-
Each component is explained more in detail in the following sections:
Oracle Integration Repository module within Oracle Integrated SOA Gateway is the centralized repository that
contains a number of interface endpoints exposed by applications within the Oracle E-Business Suite. These
interfaces are typically exposed as PL/SQL packages that provide certain functionality. The Integrated SOA
Gateway provides a comprehensive, consistent browsing view of the interface mechanism which lets users easily
discover and search on the business interface from the catalog. In addition, web services can be generated by
transforming interface definitions to a machine-processable format that complies with web standards using
WSDL. These web services can then be deployed to an application server and used for building mobile
applications and other external applications.
INTEGRATED SOA GATEWAY
A middle layer is an external layer built on the server that facilitates communication of the Mobile Client
Application with the enterprise ERP System. This layer resides on a separate server on the DMZ and provides a
bi-directional channel between the Oracle SOA and the mobile client application. The middle layer ensures that
the server running the main Oracle applications architecture is not exposed to outside the firewall. Only a
specific port from DMZ will be exposed to outside world, thus increasing security considerably.
This can be a custom-built layer or one of the MEAP solutions. (Please refer to our white-paper “Point-to-point
vs. MEAP – The Right Approach for an Integrated Mobility Solution” for more details on architecting the
middleware.) The middleware layer will maintain a secure channel or connection with the ERP system within the
Enterprise for transferring desired data between the ERP system and the mobile client application. The
middleware layer handles all system integration, security, communication, scalability and cross-platform support.
Typically, no data is stored in the middleware; it only manages data from the ERP system to the mobile client
application and vice versa.
SERVER MIDDLE LAYER
The end users of the system interact with the ERP system using the Mobile Client Application. Users will be able
to see required data from the ERP system on the mobile client application. They will also be able to modify and
add new data via the application.
There are multiple options for building mobile client applications, from native applications that provide the best
usability to mobile web that provides maximum device coverage. The right approach depends on the user
requirements. More information can be found in the section “Options for Building Mobile Client Applications”.
MOBILE CLIENT APPLICATION
©RapidValue Solutions 0202-5-
KEY BENEFITS OF A MIDDLE LAYER
Without a middle layer, the main Oracle architecture would be exposed directly to outside the firewall. The
middle layer maintained in the DMZ acts as a bi-directional channel between the Oracle SOA gateway and the
mobile device applications, providing secure communication by opening only a specific port on the DMZ to the
outside world, thus reducing the impact of external threats.
This layer can be custom built or can be a MEAP solution. Some of the functionality for which the middle layer
can be leveraged includes:
Oracle Integrated SOA Gateway enables publishing of PL/SQL package interfaces and business events from
multiple modules and making these packages available as web services for external applications.
Integration Repository comes with a set of native packaged integration interfaces. These interfaces can be
transformed into web services through a service generator. Web services are generated in a machine-
processable format called WSDL (Web Services Description Language). External systems including mobile clients
interact with the web services using SOAP (Simple Object Access Protocol) messages.
In addition to the pre-built integration packages, custom interface packages can be created and web-services
generated out of these.
Some of these capabilities can be achieved using a standard MDM solution. Therefore, detailed evaluation needs
to be done to understand which functionality needs to be included in the middle layer.
– Mobile device provisioning and management
– Mobile device functions such as remote-wipe of data
– Analytics and reporting of app usage, GPS mapping, etc.
– Integration with other systems. This layer can be used as a common integration layer which enables
information from multiple sources to be integrated into a mobile application.
– Static data cache. Data configurations that do not change frequently can be stored in the middle layer to
reduce traffic between the mobile application and the server
– Optional usage of the application while the Oracle system is down. The middle layer can cache data and
synchronize with the Oracle system when the server is in back-up mode. (Which data elements can be
synchronized needs to be evaluated carefully to avoid any compromise of data.)
ENABLING INTEGRATED SOA GATEWAY AND
PUBLISHING WEB SERVICES
©RapidValue Solutions 0202-6-
A typical web services generation and deployment process flow is shown below.
1
Interface
Definition
Generate
WSDL
Deploy
Service
Invoke
Service
1 2 3
ORACLE E-BUSINESS SUITE INTEGRATED SOA GATEWAY
Oracle Integration Repository
Oracle E-Business Suite Integrated SOA Gateway
After the interface integration definitions have been identified, custom packages can be written for them.
An integration administrator transforms the integration interface definitions residing in Oracle Integration
Repository into web services in WSDL URLs.
2 An integration repository administrator then deploys the web services.
3 Web services are used to build mobile applications.
Please refer to the appendix for an example of WSDL generation.
OPTIONS FOR BUILDING MOBILE CLIENT
APPLICATIONS
While many technology options are available for mobile applications development, it’s possible to simplify the lay
of the land. Mobile applications can be developed in three fundamental ways:
Build the application for individual platforms using its native development environment. The application is
downloaded from an app store and resides on the device.
NATIVE APPS
Build the application once using a cross-platform framework and run it on multiple mobile platforms (after
fine-tuning for each platform). The application is downloaded from an app store and resides on the device.
CROSS-PLATFORM APPS
©RapidValue Solutions 0202-7-
Build the application to run over the internet from a central server, from where it can be accessed by any device
with a web browser.
Due to differences in underlying technology, each approach has inherent advantages and drawbacks,
development frameworks and appropriate use cases. Careful analysis is required to ensure that an application is
built using the right technology for the functionality required. The following table summarizes the different
approaches:
For mobile applications integrating with Oracle Applications ERP modules, Oracle ADF Mobile would be an
excellent solution since it fits into the overall technology architecture stack.
MOBILE WEB APP
– iPhone SDK
– Android SDK
– Windows Phone SDK
Development
Approach
Definition
and Tools
Native Cross-Mobile Platforms Mobile Web
Build the app using native
frameworks:
– Oracle ADF Mobile
– PhoneGap
– Worklight
– HTML5
– Sencha
– JQuery Mobile
– Etc.
Build once, deploy on multiple
platforms as native apps:
Build using web
technologies:
– iPhone: Objective C
– Android: Java
– Windows Phone: .NET
– Oracle ADF Mobile: HTML5,
JavaScript and CSS
– Appcelerator: JavaScript, HTML
– PhoneGap: JavaScript, HTML
– JavaScript, HTMLUnderlying
Technology
App stores App stores Over the webDeployment
– Apps requiring high-end
user experience, more
transactional in nature
– Large user base on one
device (e.g. physicians
with iPad)
– Offline usage
– Apps requiring extensive
device and/or OS
functions
– Generic user
experience,
performance
depends on Internet
connection
– Distributed user base
across smart phone
platforms
– Need to maintain
single code base
– Moderate amount of
device functions
– Simpler apps, more
informational in nature
– Apps with content updated on a
frequent/live basis—perfect for
news-type applications
– Multiple device types
distributed across key users
Key Use Cases
©RapidValue Solutions 0202-8-
Criteria
Cost
of Development
Fully
Native
Criteria Cross-Platform
Frameworks
Mobile
Web Apps
Comments
Multi-Platform
Compatibility
– Cross-platform frameworks and mobile
web apps reduce development costs, as
the application can be built for multiple
platforms.
– Native apps require a separate develop-
ment effort on each platform, with
minimal reuse.
– Mobile web apps provide maximum
reach, running on any phone with a web
browser.
– Cross-platform frameworks reach all
major platforms (but not always the
same ones). Native features not included
can be coded as plug-ins.
– Native apps run only on the operating
system they are developed for.
Key questions that need to be considered when identifying the appropriate mobile client technology include:
– Who will use the app?
– What type of experience do users expect?
– What functionality is required?
– How important is multi-platform compatibility?
– Does the app need to run offline or when the connection is bad?
– Are there industry-specific requirements?
– How much time do you have to build the app?
– Does your staff have the necessary skill sets?
– What’s the total cost of ownership?
– How soon do you need new device or OS features?
The table below compares the different approaches:
©RapidValue Solutions 0202-9-
User Experience – Native apps provide the best user
experience.
– Cross-platform frameworks may not give
the best experience on all phones, with
web-app look & feel in some cases.
Scrolling and touch response are slower
than native apps.
– Web apps provide a generic experience
that may look rather clumsy on some
browsers (although this is changing with
HTML5).
Features &
Performance
– Native apps provide access to all device
features and provide the best perfor-
mance.
– Apps developed using cross-platform
frameworks can provide features
comparable to native apps, but some-
what slower performance.
– Mobile web apps have more limited
capabilities and performance. For
example, Push Notification alerts are
supported in native/cross-platform apps
but not mobile web apps.
Please refer to our white paper “How to Choose the Right Architecture for Your Mobile Application” for a detailed
discussion on this topic.
©RapidValue Solutions 0202-10-
ORACLE ADF MOBILE
For mobile applications built on Oracle Applications, ADF Mobile is a great choice for building applications. The
ADF Mobile Architecture is illustrated below.
ADF Mobile XML View
Device
Services
Local Data
ADF Mobile Browser
ADF Faces RC
Third Party Web Sites
Configuration Server
Web Services (SOAP & REST)
ADF Controller
Local HTML
Web View
Server HTML
Managed Beans
ADF Model
Java
PhoneGap
DEVICE NATIVE CONTAINER
MOBILE DEVICES SERVER
HTML5 & JavaScript
Application
Configuration
CredentialManagement,
SSO&AccessControl
Architecture for Mobilizing Oracle Applications
Oracle ADF Mobile is a hybrid platform that allows building applications in Java and HTML5. The applications can
run on both iOS and Android Operating System, allowing developers to build applications in the technology with
which they are familiar.
Some key advantages of Oracle ADF Mobile are:
– Multi-platform: Ability to develop once and deploy on multiple platforms like iOS and Android
– Device Access Features: Ability to access device features like GPS, Camera, Email, etc.
– Ease of development: ADF mobile leverages Java and HTML5 frameworks, making development easier
– Security: ADF Mobile provides security that works with the server back end using a consistent login
mechanism and SQL Lite encryption
– Scalability: ADF Mobile can be extended to other touch-friendly platforms like jQuery, making the
platform highly scalable.
©RapidValue Solutions 0202-11-
Identify key
functionality
Identify
web services
Identify mobile
client technology
Identify data
elements/objects
Map
web services to existing
PL/SQL packages
Build mobile apps
integrated with WSDLs
Identify local storage
requirements
Identify new PL/SQL
packages to be created
Create new PL/SQL
packages
Generate WSDLs from
Integration Gateway
KEY STEPS: DESIGNING MOBILE APPLICATIONS
INTEGRATED WITH ORACLE E-BUSINESS SUITE
The following image provides a framework for building mobile applications integrated with Oracle Applications
ERP modules.
Requirements and Strategy Oracle SOA Design & Build Mobile Client Design & Build
This phase involves understanding the functionality and data requirements, and mapping them to the available
web services in Integrated SOA Gateway. This stage also includes identifying any new web services that need to
be created.
REQUIREMENTS AND STRATEGY
The key steps are:
– Identify main functionality
For the Field Service mobile application described below, the key requirements would be login, view tasks,
view service requests and update debrief.
©RapidValue Solutions 0202-12-
– Identify key data elements/objects such as tasks, service request and installed base
– Identify local data storage/cache requirements
Understanding data synchronization requirements is critical to build a scalable system. For example, in a
mobile Field Service application, the requirement may be to show only the active tasks for a particular
user which will be cached for that user. Also, some of the static data elements like part numbers and
sub-inventories that do not change on a regular basis can be stored locally and synchronized only when a
new data element is added.
An optimal definition of data elements that are stored locally vs. accessed live will require the right
balance between performance, robustness and functionality. Multi-user support is also an important factor
to consider while caching data locally.
This phase involves identifying the web services that are to be created for the mobile application, mapping with
existing web services along with interface packages and creating new services as required.
ORACLE SOA DESIGN AND BUILD
– Identify web services
For example, in the case study below, some of the web services would be login, view all tasks or a specific
task, and update task status.
– Map web services to existing native packaged integration interfaces
Oracle Integration Repository in SOA Gateway comes equipped with a number of pre-defined integration
interfaces (PL/SQL packages). Identify all interfaces that can be used.
– Identify and create new integration interfaces required
Depending on your business requirements, custom web services may be required. Identify the new
integration interfaces (PL/SQL packages) that need to be created to enable this.
– Generate WSDLs from the integration packages
Create and deploy a web service WSDL file for a selected interface using Oracle SOA Gateway. This needs
to be done for both pre-defined (seeded) integration packages as well as custom integration packages.
Custom packages will need to be loaded to the integration repository using the FNDLOAD utility provided
by Oracle.
The key steps are:
Identify the right technology framework to develop the mobile client application after considering all factors
discussed in the previous section “Options for Building Mobile Client Applications”.
MOBILE CLIENT APPLICATION DESIGN AND BUILD
©RapidValue Solutions 0202-13-
CASE STUDY: BUILDING A FIELD SERVICE APP ON
ORACLE APPLICATIONS ERP
A large consumer product firm wanted to extend their Oracle Field Service Application to Android tablets. Some
of the key requirements were:
REQUIREMENTS
Integrated SOA Gateway was leveraged to publish web services for interface packages. Custom packages were
identified and web services were created. Web services were used to integrate with the mobile client. The
mobile client in this case was built on Android native platform, as most of field service personnel were provided
with Android tablets.
A few screens of the app.
SOLUTION
– Login and view tasks
– View service requests for a task
– View customer, location and product details for a task
– View installed base related to a task
– Create debrief information for a task
– Update status of a task
©RapidValue Solutions 0202-14-
APPENDIX: GENERATING WEB SERVICES IN AN
INTEGRATED SOA GATEWAY
CUSTOM INTERFACE PACKAGE FOR CREATING WSDL
©RapidValue Solutions 0202-15-
GENERATING WEB SERVICES IN ORACLE
GENERATING WEB SERVICES IN ORACLE
©RapidValue Solutions 0202-16-
www.rapidvaluesolutions.com
www.rapidvaluesolutions.com/blog
+1-877-643-1850
contactus@rapidvaluesolutions.com
ABOUT RAPIDVALUE
A global leader in digital transformation for enterprise providing end-to-end mobility, omni-channel,
IoT and cloud solutions. Armed with a large team of experts in consulting, UX design, application
development, integration and testing, along with experience delivering projects worldwide, in mobility
and cloud, we offer a wide range of services across industry verticals. We deliver services to the
world’s top brands, fortune 1000 companies, Multinational companies and emerging start-ups. We
have offices in the United States, the United Kingdom and India.
February 2013

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Mobilizing Oracle Applications ERP - A Whitepaper by RapidValue Solutions

  • 1. MOBILIZING ORACLE APPLICATIONS ERP An Approach for Building Scalable Mobility Solutions A RapidValue Solutions Whitepaper
  • 2. ©RapidValue Solutions 0202-2- TABLE OF CONTENTS Executive Overview Typical Architecture for Mobilizing Oracle Applications ERP Modules Integrated SOA Gateway Server Middle Layer Mobile Client Application Key Benefits of a Middle Layer Enabling Integrated SOA Gateway and Publishing Web Services Options for Building Mobile Client Applications Native Apps Cross-Platform Apps Mobile Web Apps Oracle ADF Mobile Key Steps: Designing Mobile Applications Integrated with Oracle E-Business Suite Requirements and Strategy Oracle SOA Design and Build Mobile Client Application Design and Build Case Study: Building a Field Service App on Oracle Applications ERP Requirements Solution Appendix: Generating Web Services in an Integrated SOA Gateway Custom Interface Package for Creating WSDL Generating Web Services in Oracle Generated WSDL Example About RapidValue 3 4 5 5 5 6 6 7 7 7 8 11 12 12 13 13 14 14 14 15 15 16 16 17
  • 3. EXECUTIVE OVERVIEW Enterprises are recognizing the importance of extending their ERP(Enterprise Resource Planning) systems to mobile devices and providing employees with access to internal systems while on the move. This paper examines the approaches for extending Oracle E-Business Suite ERP modules to mobile. It describes the overall architecture and solution, and includes an example of extending the Oracle Applications Field Service module to mobile. In the example, a mobile application is built on the Android platform to leverage the capabilities of the mobile device. Oracle Integrated SOA module is leveraged to expose web services to outside the firewall. Web services can be generated using pre-built packages or custom packages so as to enable required behavior of the mobile application. A middle layer is introduced to ensure security and mobile device management capabilities. The middle layer ensures that the ERP system is not exposed to outside the firewall to protect the system and its data. Once web services for requisite functions are exposed, mobile client application can be developed using multiple options: native, cross-platform and mobile web. The technology used depends on business requirements for usability, functionality and the long-term technology roadmap. Oracle ADF Mobile is an excellent option for extending Oracle Applications modules, as it fits well into the overall architecture stack. To select the right approach for developing the mobile client platform, please refer to our white paper: “How to Choose the Right Architecture for your Mobile Application” at http://www.rapidvaluesolutions.com/whitepaper/ Enterprise mobility has transformed the way businesses engage with their customers, partners and staff, using innovative applications that enhance and accelerate the exchange of critical information. However, mobile applications are only part of the overall solution – integration with existing systems in a scalable manner is equally important and challenging. ©RapidValue Solutions 0202-3-
  • 4. TYPICAL ARCHITECTURE FOR MOBILIZING ORACLE APPLICATIONS ERP MODULES The diagram below illustrates key architectural components involved in mobilizing Oracle Applications. The main components include: – Integrated Service-Oriented Architecture (SOA) Gateway – a core component of Oracle Applications, allows service enabling of PL/SQL integration interfaces and deploys them as web services. – Middle Layer – a custom integration layer that provides security and some mobile device management (MDM) capabilities. The middle layer can also be integrated with a standard MDM package that provides security features. This is an optional layer in the architecture; however this layer increases scalability and security considerably. – Mobile Client Application – can be built as a native application, hybrid application or a mobile web application. The mobile client interacts with the ERP modules leveraging web services exposed through the Integrated SOA Gateway module. Create/Update Service Request Internal Firewall A p p l i c a t i o n s http/s http/s External Firewall Device provisioning / management Mobile Client App Mobile Client App Push notifications/ Messaging Security features like remote wipe Data synchronization components Create/Update Debrief Create/Update Task INTEGRATED SOA GATEWAY ERP DMZ MIDDLE LAYER Architecture for Mobilizing Oracle Applications 1 2 3 WSDL WSDL WSDL ©RapidValue Solutions 0202-4-
  • 5. Each component is explained more in detail in the following sections: Oracle Integration Repository module within Oracle Integrated SOA Gateway is the centralized repository that contains a number of interface endpoints exposed by applications within the Oracle E-Business Suite. These interfaces are typically exposed as PL/SQL packages that provide certain functionality. The Integrated SOA Gateway provides a comprehensive, consistent browsing view of the interface mechanism which lets users easily discover and search on the business interface from the catalog. In addition, web services can be generated by transforming interface definitions to a machine-processable format that complies with web standards using WSDL. These web services can then be deployed to an application server and used for building mobile applications and other external applications. INTEGRATED SOA GATEWAY A middle layer is an external layer built on the server that facilitates communication of the Mobile Client Application with the enterprise ERP System. This layer resides on a separate server on the DMZ and provides a bi-directional channel between the Oracle SOA and the mobile client application. The middle layer ensures that the server running the main Oracle applications architecture is not exposed to outside the firewall. Only a specific port from DMZ will be exposed to outside world, thus increasing security considerably. This can be a custom-built layer or one of the MEAP solutions. (Please refer to our white-paper “Point-to-point vs. MEAP – The Right Approach for an Integrated Mobility Solution” for more details on architecting the middleware.) The middleware layer will maintain a secure channel or connection with the ERP system within the Enterprise for transferring desired data between the ERP system and the mobile client application. The middleware layer handles all system integration, security, communication, scalability and cross-platform support. Typically, no data is stored in the middleware; it only manages data from the ERP system to the mobile client application and vice versa. SERVER MIDDLE LAYER The end users of the system interact with the ERP system using the Mobile Client Application. Users will be able to see required data from the ERP system on the mobile client application. They will also be able to modify and add new data via the application. There are multiple options for building mobile client applications, from native applications that provide the best usability to mobile web that provides maximum device coverage. The right approach depends on the user requirements. More information can be found in the section “Options for Building Mobile Client Applications”. MOBILE CLIENT APPLICATION ©RapidValue Solutions 0202-5-
  • 6. KEY BENEFITS OF A MIDDLE LAYER Without a middle layer, the main Oracle architecture would be exposed directly to outside the firewall. The middle layer maintained in the DMZ acts as a bi-directional channel between the Oracle SOA gateway and the mobile device applications, providing secure communication by opening only a specific port on the DMZ to the outside world, thus reducing the impact of external threats. This layer can be custom built or can be a MEAP solution. Some of the functionality for which the middle layer can be leveraged includes: Oracle Integrated SOA Gateway enables publishing of PL/SQL package interfaces and business events from multiple modules and making these packages available as web services for external applications. Integration Repository comes with a set of native packaged integration interfaces. These interfaces can be transformed into web services through a service generator. Web services are generated in a machine- processable format called WSDL (Web Services Description Language). External systems including mobile clients interact with the web services using SOAP (Simple Object Access Protocol) messages. In addition to the pre-built integration packages, custom interface packages can be created and web-services generated out of these. Some of these capabilities can be achieved using a standard MDM solution. Therefore, detailed evaluation needs to be done to understand which functionality needs to be included in the middle layer. – Mobile device provisioning and management – Mobile device functions such as remote-wipe of data – Analytics and reporting of app usage, GPS mapping, etc. – Integration with other systems. This layer can be used as a common integration layer which enables information from multiple sources to be integrated into a mobile application. – Static data cache. Data configurations that do not change frequently can be stored in the middle layer to reduce traffic between the mobile application and the server – Optional usage of the application while the Oracle system is down. The middle layer can cache data and synchronize with the Oracle system when the server is in back-up mode. (Which data elements can be synchronized needs to be evaluated carefully to avoid any compromise of data.) ENABLING INTEGRATED SOA GATEWAY AND PUBLISHING WEB SERVICES ©RapidValue Solutions 0202-6-
  • 7. A typical web services generation and deployment process flow is shown below. 1 Interface Definition Generate WSDL Deploy Service Invoke Service 1 2 3 ORACLE E-BUSINESS SUITE INTEGRATED SOA GATEWAY Oracle Integration Repository Oracle E-Business Suite Integrated SOA Gateway After the interface integration definitions have been identified, custom packages can be written for them. An integration administrator transforms the integration interface definitions residing in Oracle Integration Repository into web services in WSDL URLs. 2 An integration repository administrator then deploys the web services. 3 Web services are used to build mobile applications. Please refer to the appendix for an example of WSDL generation. OPTIONS FOR BUILDING MOBILE CLIENT APPLICATIONS While many technology options are available for mobile applications development, it’s possible to simplify the lay of the land. Mobile applications can be developed in three fundamental ways: Build the application for individual platforms using its native development environment. The application is downloaded from an app store and resides on the device. NATIVE APPS Build the application once using a cross-platform framework and run it on multiple mobile platforms (after fine-tuning for each platform). The application is downloaded from an app store and resides on the device. CROSS-PLATFORM APPS ©RapidValue Solutions 0202-7-
  • 8. Build the application to run over the internet from a central server, from where it can be accessed by any device with a web browser. Due to differences in underlying technology, each approach has inherent advantages and drawbacks, development frameworks and appropriate use cases. Careful analysis is required to ensure that an application is built using the right technology for the functionality required. The following table summarizes the different approaches: For mobile applications integrating with Oracle Applications ERP modules, Oracle ADF Mobile would be an excellent solution since it fits into the overall technology architecture stack. MOBILE WEB APP – iPhone SDK – Android SDK – Windows Phone SDK Development Approach Definition and Tools Native Cross-Mobile Platforms Mobile Web Build the app using native frameworks: – Oracle ADF Mobile – PhoneGap – Worklight – HTML5 – Sencha – JQuery Mobile – Etc. Build once, deploy on multiple platforms as native apps: Build using web technologies: – iPhone: Objective C – Android: Java – Windows Phone: .NET – Oracle ADF Mobile: HTML5, JavaScript and CSS – Appcelerator: JavaScript, HTML – PhoneGap: JavaScript, HTML – JavaScript, HTMLUnderlying Technology App stores App stores Over the webDeployment – Apps requiring high-end user experience, more transactional in nature – Large user base on one device (e.g. physicians with iPad) – Offline usage – Apps requiring extensive device and/or OS functions – Generic user experience, performance depends on Internet connection – Distributed user base across smart phone platforms – Need to maintain single code base – Moderate amount of device functions – Simpler apps, more informational in nature – Apps with content updated on a frequent/live basis—perfect for news-type applications – Multiple device types distributed across key users Key Use Cases ©RapidValue Solutions 0202-8-
  • 9. Criteria Cost of Development Fully Native Criteria Cross-Platform Frameworks Mobile Web Apps Comments Multi-Platform Compatibility – Cross-platform frameworks and mobile web apps reduce development costs, as the application can be built for multiple platforms. – Native apps require a separate develop- ment effort on each platform, with minimal reuse. – Mobile web apps provide maximum reach, running on any phone with a web browser. – Cross-platform frameworks reach all major platforms (but not always the same ones). Native features not included can be coded as plug-ins. – Native apps run only on the operating system they are developed for. Key questions that need to be considered when identifying the appropriate mobile client technology include: – Who will use the app? – What type of experience do users expect? – What functionality is required? – How important is multi-platform compatibility? – Does the app need to run offline or when the connection is bad? – Are there industry-specific requirements? – How much time do you have to build the app? – Does your staff have the necessary skill sets? – What’s the total cost of ownership? – How soon do you need new device or OS features? The table below compares the different approaches: ©RapidValue Solutions 0202-9-
  • 10. User Experience – Native apps provide the best user experience. – Cross-platform frameworks may not give the best experience on all phones, with web-app look & feel in some cases. Scrolling and touch response are slower than native apps. – Web apps provide a generic experience that may look rather clumsy on some browsers (although this is changing with HTML5). Features & Performance – Native apps provide access to all device features and provide the best perfor- mance. – Apps developed using cross-platform frameworks can provide features comparable to native apps, but some- what slower performance. – Mobile web apps have more limited capabilities and performance. For example, Push Notification alerts are supported in native/cross-platform apps but not mobile web apps. Please refer to our white paper “How to Choose the Right Architecture for Your Mobile Application” for a detailed discussion on this topic. ©RapidValue Solutions 0202-10-
  • 11. ORACLE ADF MOBILE For mobile applications built on Oracle Applications, ADF Mobile is a great choice for building applications. The ADF Mobile Architecture is illustrated below. ADF Mobile XML View Device Services Local Data ADF Mobile Browser ADF Faces RC Third Party Web Sites Configuration Server Web Services (SOAP & REST) ADF Controller Local HTML Web View Server HTML Managed Beans ADF Model Java PhoneGap DEVICE NATIVE CONTAINER MOBILE DEVICES SERVER HTML5 & JavaScript Application Configuration CredentialManagement, SSO&AccessControl Architecture for Mobilizing Oracle Applications Oracle ADF Mobile is a hybrid platform that allows building applications in Java and HTML5. The applications can run on both iOS and Android Operating System, allowing developers to build applications in the technology with which they are familiar. Some key advantages of Oracle ADF Mobile are: – Multi-platform: Ability to develop once and deploy on multiple platforms like iOS and Android – Device Access Features: Ability to access device features like GPS, Camera, Email, etc. – Ease of development: ADF mobile leverages Java and HTML5 frameworks, making development easier – Security: ADF Mobile provides security that works with the server back end using a consistent login mechanism and SQL Lite encryption – Scalability: ADF Mobile can be extended to other touch-friendly platforms like jQuery, making the platform highly scalable. ©RapidValue Solutions 0202-11-
  • 12. Identify key functionality Identify web services Identify mobile client technology Identify data elements/objects Map web services to existing PL/SQL packages Build mobile apps integrated with WSDLs Identify local storage requirements Identify new PL/SQL packages to be created Create new PL/SQL packages Generate WSDLs from Integration Gateway KEY STEPS: DESIGNING MOBILE APPLICATIONS INTEGRATED WITH ORACLE E-BUSINESS SUITE The following image provides a framework for building mobile applications integrated with Oracle Applications ERP modules. Requirements and Strategy Oracle SOA Design & Build Mobile Client Design & Build This phase involves understanding the functionality and data requirements, and mapping them to the available web services in Integrated SOA Gateway. This stage also includes identifying any new web services that need to be created. REQUIREMENTS AND STRATEGY The key steps are: – Identify main functionality For the Field Service mobile application described below, the key requirements would be login, view tasks, view service requests and update debrief. ©RapidValue Solutions 0202-12-
  • 13. – Identify key data elements/objects such as tasks, service request and installed base – Identify local data storage/cache requirements Understanding data synchronization requirements is critical to build a scalable system. For example, in a mobile Field Service application, the requirement may be to show only the active tasks for a particular user which will be cached for that user. Also, some of the static data elements like part numbers and sub-inventories that do not change on a regular basis can be stored locally and synchronized only when a new data element is added. An optimal definition of data elements that are stored locally vs. accessed live will require the right balance between performance, robustness and functionality. Multi-user support is also an important factor to consider while caching data locally. This phase involves identifying the web services that are to be created for the mobile application, mapping with existing web services along with interface packages and creating new services as required. ORACLE SOA DESIGN AND BUILD – Identify web services For example, in the case study below, some of the web services would be login, view all tasks or a specific task, and update task status. – Map web services to existing native packaged integration interfaces Oracle Integration Repository in SOA Gateway comes equipped with a number of pre-defined integration interfaces (PL/SQL packages). Identify all interfaces that can be used. – Identify and create new integration interfaces required Depending on your business requirements, custom web services may be required. Identify the new integration interfaces (PL/SQL packages) that need to be created to enable this. – Generate WSDLs from the integration packages Create and deploy a web service WSDL file for a selected interface using Oracle SOA Gateway. This needs to be done for both pre-defined (seeded) integration packages as well as custom integration packages. Custom packages will need to be loaded to the integration repository using the FNDLOAD utility provided by Oracle. The key steps are: Identify the right technology framework to develop the mobile client application after considering all factors discussed in the previous section “Options for Building Mobile Client Applications”. MOBILE CLIENT APPLICATION DESIGN AND BUILD ©RapidValue Solutions 0202-13-
  • 14. CASE STUDY: BUILDING A FIELD SERVICE APP ON ORACLE APPLICATIONS ERP A large consumer product firm wanted to extend their Oracle Field Service Application to Android tablets. Some of the key requirements were: REQUIREMENTS Integrated SOA Gateway was leveraged to publish web services for interface packages. Custom packages were identified and web services were created. Web services were used to integrate with the mobile client. The mobile client in this case was built on Android native platform, as most of field service personnel were provided with Android tablets. A few screens of the app. SOLUTION – Login and view tasks – View service requests for a task – View customer, location and product details for a task – View installed base related to a task – Create debrief information for a task – Update status of a task ©RapidValue Solutions 0202-14-
  • 15. APPENDIX: GENERATING WEB SERVICES IN AN INTEGRATED SOA GATEWAY CUSTOM INTERFACE PACKAGE FOR CREATING WSDL ©RapidValue Solutions 0202-15-
  • 16. GENERATING WEB SERVICES IN ORACLE GENERATING WEB SERVICES IN ORACLE ©RapidValue Solutions 0202-16-
  • 17. www.rapidvaluesolutions.com www.rapidvaluesolutions.com/blog +1-877-643-1850 contactus@rapidvaluesolutions.com ABOUT RAPIDVALUE A global leader in digital transformation for enterprise providing end-to-end mobility, omni-channel, IoT and cloud solutions. Armed with a large team of experts in consulting, UX design, application development, integration and testing, along with experience delivering projects worldwide, in mobility and cloud, we offer a wide range of services across industry verticals. We deliver services to the world’s top brands, fortune 1000 companies, Multinational companies and emerging start-ups. We have offices in the United States, the United Kingdom and India. February 2013