Archive for the 'Development' Category

Making Sense of 2 IoT Protocols: MQTT and CoAP

Exadel’s VP of Software Development, Jonathan Fries, has shared an­other thought­ful piece on the Internet of Things, this time fo­cus­ing on two tech­nolo­gies that stand out for IoT de­vice com­mu­ni­ca­tions: MQTT (Message Queue Telemetry Transport) and CoAP (Constrained Application Protocol). There’s no al­ways right an­swer for which to use, but Jonathan gives some guid­ance on how to de­cide based on the situation—after ex­plain­ing each of the pro­to­cols. He also makes some pre­dic­tions about the fu­ture for these pro­to­cols.

Read the whole ar­ti­cle: Why are IoT de­vel­op­ers con­fused by MQTT and CoAP?

How to Be an Internet of Things (IoT) Developer in the Modern Age

Graphic representation of world covered with Internet of Things (Iot) connections

The pro­lif­er­a­tion of con­nected de­vices over the past sev­eral years has been as­ton­ish­ing. From every­day items like wear­ables and ther­mostats to more am­bi­tious de­vices like so­lar pan­els and street lights, it seems as if there are few things that are not con­nected in some way. As we look to­ward the fu­ture to fully con­nected cities, hos­pi­tals, and homes, the role of the IoT de­vel­oper is be­com­ing ever more cru­cial.

Software de­vel­op­ment is of grow­ing im­por­tance in all kinds of in­dus­tries, but ar­guably none is more im­por­tant than de­vel­op­ing for and with con­nected de­vices. If your Fitbit glitches, that is one story, but it is an en­tirely dif­fer­ent one if a con­nected med­ical de­vice fails in the mid­dle of surgery or a self-dri­ving car goes hay­wire in the mid­dle of rush hour. Because of the crit­i­cal role that IoT de­vices are play­ing in our lives, poorly de­vel­oped IoT de­vices can be life threat­en­ing, mak­ing this type of de­vel­op­ment par­tic­u­larly unique.

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Lisa Calkins on “Introverts Can Be Leaders, Too”

Our Chief Strategy Officer, Lisa Calkins, will be speak­ing at DeveloperWeek 2017 in San Francisco on how man­agers can ben­e­fit from the crit­i­cal per­spec­tive of de­vel­op­ers on the fea­si­bil­ity and re­quire­ments of soft­ware projects, how­ever neg­a­tive this per­spec­tive might come across at times.

Who: Lisa Calkins, CSO, Exadel
What: Introverts Can Be Leaders, Too
When: Wednesday, Feb. 15, 3 pm PST
Where: DeveloperWeek Main Stage

Read the full an­nounce­ment here…

JBoss and Exadel: 8 Years of Working Together


Exadel had de­vel­oped two well-re­garded prod­ucts in 2006. Exadel Studio was an Eclipse plug-in that con­verted Eclipse from just an in­te­grated de­vel­op­ment en­vi­ron­ment (IDE) to a pow­er­ful web app IDE. RichFaces was a JavaServer Faces (JSF) com­po­nent li­brary de­vel­oped by Exadel as part of its lead­er­ship role in JSF de­vel­op­ment at the time.

In March 2007, Exadel be­gan a part­ner­ship with Red Hat putting Exadel Studio and RichFaces into open source un­der JBoss. A key part of this part­ner­ship that con­tinues to this day (eight years later) is Red Hat con­tracting with Exadel for Exadel to pro­vide a de­vel­opment team to work on what is now known as JBoss Developer Studio.

Denis Golovin, in our California of­fice, has been the team lead on the Exadel side of the part­ner­ship for this whole time, so we thought we’d ask him a few ques­tions about it.

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Update on Our Lithuanian Presence

View of Vilnius, Lithuania

Vilnius, Lithuania: old world charm, new world dy­namism

Lithuania is where our CEO and Founder, Fima Katz, grew up. In the sum­mer of 2014, he had a home­com­ing of sorts when he opened an of­fice in the cap­i­tal city, Vilnius.

For Exadel, Lithuania has the ad­van­tage of be­ing in Eastern Europe close to our other de­vel­op­ment cen­ters while also be­ing in­te­grated with Western Europe by its mem­ber­ship in the European Union and NATO. It’s also a very nice place to live and work.

In December 2014, we an­nounced fur­ther ex­pan­sion plans that in­clude open­ing ad­di­tional of­fices in Kaunas and Klaipeda. So far this year, we have more than 30 em­ploy­ees in Vilnius and five in Klaipeda. Soon, we’ll be open­ing our Kaunas of­fice! We look for­ward to fur­ther growth in all three de­vel­op­ment cen­ters.

Read our an­nounce­ment as re­ported in Invest Lithuania.

Contact the Vilnius of­fice di­rectly.

A Simple HTML5 Drag-and-Drop Example

In this ar­ti­cle, we’ll learn how to im­ple­ment a very sim­ple ex­am­ple of an HTML5 drag-and-drop in ac­tion. We’ll de­fine a drag­gable im­age that can be dropped into a cir­cle. You’ll see this ex­am­ple and say “That’s so easy!”. But don’t rush to any con­clu­sions. In more com­plex use cases, it’s not such a piece of cake any­more and can be­come a real pain in the neck! Read more »

Tiggr Moves to the Amazon EC2 Cloud

Tiggr logo in a cloud

Tiggr is an on­line tool for pro­duc­ing in­ter­ac­tive pro­to­types of Web and mo­bile ap­pli­ca­tions. The hard work of Exadel’s Tiggr de­vel­op­ment team has paid off in a rapid growth of the user base for Tiggr. As part of this suc­cess for Tiggr, we’ve taken a big step to put it on a more se­cure, re­li­able, and scal­able foot­ing. That step is to start host­ing Tiggr on Amazon EC2. Congratulations to the Tiggr team on mov­ing to the Cloud!

Working with iOS and SOAP

At Exadel we have a lot of ex­pe­ri­ence with mo­bile de­vel­op­ment. One thing that comes up in our work in this area is the oc­ca­sional ne­ces­sity to com­mu­ni­cate with ser­vices us­ing SOAP. To do this, we need to gen­er­ate Objective-C source code from a WSDL doc­u­ment. In this ar­ti­cle, I’ll de­scribe some util­i­ties for this and then how to re­solve some is­sues that come up in us­ing these code gen­er­a­tors. Read more »