IBM Systems Magazine, LANSA Review- May 2014 - LR23

Warehouse: Warehouse staff use apps with
barcode scanning for the recording of inventory
moves and for cycle counting.
These are just a few examples. to give you
some idea where mobile apps can provide
efficiency and productivity improvements to
business activities.

Why LongRange
IBM i developers who use LongRange are
generally productive in a very short time. They
have no new development language to learn
and they are already familiar with the back-end
application with which the mobile app needs to
integrate.Therefore, LongRange developed apps
have a relative low total-cost-of-ownership and
a quick time to market.
There are multiple ways to develop apps for
mobile devices. Each option is known to require
different levels of time and effort to build, and
deliver different levels of user experience, as
illustrated in the diagram in Figure 1.
Browser apps that interact with an existing
Web site that has not been optimized for
mobile access, are quick to implement, but the
ease of use will be questionable at the best.
Web sites that are optimized for mobile access
provide a better user experience, but will still
not have access to device features like signature
capture, geo-location and bar code scanning..
Hybrid apps are a combination of Web and
native, where a native app acts as a container
for the browser app. The container interfaces
with the device hardware and allows the Web
app to use device features it could otherwise
not access. Developers use HTML, CSS and
JavaScript for Web apps and hybrid apps.
Native apps provide the optimum easeof-use, performance and user experience.
When productivity is vital, or when signatures
need to be captured, barcodes scanned or
other hardware features need to be utilized, a
native app is the only option. However, unless
LongRange is used, building native apps takes
longer than the other options. Developers need
to use device-specific development languages
(e.g. Objective-C, Java and C#) and they must
build a separate version of the app for each
device type (Apple, Android, Windows, etc)
Without LongRange, IBM i developers who
are already skilled in RPG or COBOL must learn
these additional native programming languages
or Web development tools before they can
build mobile apps. This will increase both the
costs and the time to deliver mobile apps.
LongRange allows IBM i developers to build
native apps for multiple mobile platforms using
their existing skills, making them productive
immediately. LongRange also comes with a
range of templates, sample applications and
RPG/COBOL/DDS code.

LongRange
Mobile
App

LongRange
Server

IBM

RPG Programs
COBOL Programs
CL Programs

Mobile Device

Other Programs,
Web Services,
Message Queues

IBM i Server

Figure 2: LongRange consists of a server-side management service (LongRange Server) and an
app that runs natively on a mobile device (LongRange mobile app).

Technical Overview
LongRange consists of a server-side
management service (LongRange Server) and
an app that runs natively on a mobile device
(LongRange native mobile app). Users download
the app to their mobile device, connect to the
server and are ready to use the mobile business
solution.
When a mobile user invokes a form view in
the LongRange native mobile app, the action
sends a request to the LongRange Server,
which calls the associated RPG, COBOL or
CL program. These programs can also call
other RPG, COBOL, Java or CL programs, and
interact with Web services, message queues, etc.
From a developer's perspective the programs
are just like any other IBM i program. The
program performs its processing and issues a
send screen command to LongRange Server.
(Note: the LANSA version is not restricted to
IBM i servers).
The LongRange Server sends the screen
to the app, which displays the screen on the
mobile device. The LongRange native mobile
app is faster than mobile Web apps when
rendering screens and responding to user
actions, providing a high performance solution.
The LongRange Mobile app processes
input and output from IBM i programs with a
significantly enhanced user interface, extended
with touch, automatic portrait/landscape
rotation and screen resizing for phone or tablet.
IBM i programs can use the mobile device
hardware capabilities, such as camera and geolocation, and the app can send and receive data
between the mobile device and the server.
The app contains components for navigation,
tabs, views and commands. It provides the
infrastructure of the application. Developers
snap programs into the application schema
using LongRange Studio.
Tabs provide concurrent views of information
from multiple programs, allowing users to
quickly switch between views.There are 3 types
of views rendered in the LongRange native app:
* Form views are screens generated by RPG,
COBOL or CL with DDS programs.
* Web views are HTML applications or Web
pages.

www.LANSA .com/Su bscribe

*    ocument views show document files and 
D
folders either on the mobile device or on a
remote server.
Developers can build applications using only
IBM i programs in form views, or composite
applications using a combination of views.
LongRange Studio: Developers use
LongRange Studio to define the static parts of
an application, such as the menu item captions
and icons, form captions and which IBM i
program to call when a menu item is selected.

Deployment and Management
Deployment is by downloading the app from
an app store and configuring communications
with an IBM i server.
Updating mobile apps is the same as updating
any IBM i program. Once updates are applied
to your IBM i production system, they are
immediately available to users of the LongRange
mobile app, without them having to download
or update anything on the mobile device. This is
a major advantage of managing LongRange apps
out in the field, in comparison with standard
native apps that require mobile users to
download a new app for every program update.

Security
Security is an integral part of the product.
LongRange supports:
* IBM i security and authentication
mechanisms up to and including the highest
security level (level 50).
*    ncrypted User identification and passwords. 
E
*    og-in from specific devices only (an 
L
administrator can instantly remove a device
from the list of accepted devices).
LongRange Server supports Secure Sockets
Layer (SSL) and Transport Layer Security
(TLS) protocols which allow for secure
authentication, encryption, non-repudiation and
VPN technologies
Download a free trial from:
www.longrangemobile.com
In depth instructions:
www.longrangeuniv.com

23


http://www.longrangemobile.com http://www.longrangeuniv.com http://www.LANSA.com/Subscribe

IBM Systems Magazine, LANSA Review- May 2014

Table of Contents for the Digital Edition of IBM Systems Magazine, LANSA Review- May 2014

IBM Systems Magazine, LANSA Review- May 2014 - LR1
IBM Systems Magazine, LANSA Review- May 2014 - LR2
IBM Systems Magazine, LANSA Review- May 2014 - LR3
IBM Systems Magazine, LANSA Review- May 2014 - LR4
IBM Systems Magazine, LANSA Review- May 2014 - LR5
IBM Systems Magazine, LANSA Review- May 2014 - LR6
IBM Systems Magazine, LANSA Review- May 2014 - LR7
IBM Systems Magazine, LANSA Review- May 2014 - LR8
IBM Systems Magazine, LANSA Review- May 2014 - LR9
IBM Systems Magazine, LANSA Review- May 2014 - LR10
IBM Systems Magazine, LANSA Review- May 2014 - LR11
IBM Systems Magazine, LANSA Review- May 2014 - LR12
IBM Systems Magazine, LANSA Review- May 2014 - LR13
IBM Systems Magazine, LANSA Review- May 2014 - LR14
IBM Systems Magazine, LANSA Review- May 2014 - LR15
IBM Systems Magazine, LANSA Review- May 2014 - LR16
IBM Systems Magazine, LANSA Review- May 2014 - LR17
IBM Systems Magazine, LANSA Review- May 2014 - LR18
IBM Systems Magazine, LANSA Review- May 2014 - LR19
IBM Systems Magazine, LANSA Review- May 2014 - LR20
IBM Systems Magazine, LANSA Review- May 2014 - LR21
IBM Systems Magazine, LANSA Review- May 2014 - LR22
IBM Systems Magazine, LANSA Review- May 2014 - LR23
IBM Systems Magazine, LANSA Review- May 2014 - LR24
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