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  Think Big – Now Think Even Bigger
  Join Us at Internet of Things at Cloud Expo, November 11-13,
at the Javits Center!


The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago.

All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades.

With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend Internet of Things at Cloud Expo in New York City. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be!

Delegates to Internet of Things at Cloud Expo will be able to attend eight separate, information-packed tracks:

  • Enterprise Cloud
  • Digital Transformation
  • The API Enterprise | Mobility & Security
  • DevOps | Containers & Microservices
  • Cognitive Computing | AI, ML, DL
  • Big Data | Analytics
  • IoT | IIoT | Smart Cities
  • Hot Topics | FinTech | WebRTC

There are 120 breakout sessions in all, with Keynotes, General Sessions, and Power Panels adding to three days of incredibly rich presentations and content.


We'll see you in New York!



Day 3 Keynote at @ThingsExpo | Chris Matthieu, CTO of Octoblu
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu's platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
  Themes & Topics to Be Discussed

Consumer IoT
• Wearables
• Smart Appliances
• Smart Cars
• Smartphones 2.0
• Automation
• Smart Travel
• Personal Fitness
• Health Care
• Personalized Marketing
• Customized Shopping
• Personal Finance
• The Digital Divide
• Mobile Cash & Markets
• Games & The IoT
• The Future of Education
• Virtual Reality

Enterprise IoT
• The Business Case for
x IoT
• Smart Grids
• Smart Cities
• Smart Transportation
• The Smart Home
• M2M
• Authentication/Security
• Wiring the IoT
• The Internet of
x Everything
• Digital Transformation
x of Enterprise IT
• Agriculture
• Transportation
• Manufacturing
• Local & State
x Government
• Federal Government

IoT Developers | WebRTC Summit
• Eclipse Foundation
• Cloud Foundry
• Linux Containers
• Node-Red
• Open Source Hardware
• Ajax and the IoT
• Leveraging SOA
• Multi-Cloud IoT
• Evolving Standards
• WebSockets
• Security & Privacy
x Protocols
• GPS & Proximity
x Services
• Bluetooth/RFID/etc
• XMPP
• Nest Labs



The Top Keynotes, the Best Sessions, a Rock Star Faculty and the Most Qualified Delegates of ANY Internet of Things Event!


The future of computing lies in these things. As computing takes a much more active role in our lives it will at the same time become much more invisible. Internet of Things Expo will address the challenges in getting from where we are today to this future.
 
The high-energy event is a must-attend for senior technologists from CEOs on down – including CIOs, CTOs, directors of infrastructure, VPs of technology, IT directors and managers, network and storage managers, network engineers, enterprise architects, and communications and networking specialists.




@ThingsExpo Power Panel | The World's Many IoTs: Which Are the Most Important?
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, panelists discussed what things are the most important, which will have the most profound effect on the world, and what should we expect to see over the next couple of years.
Benefits of Attending the Three-Day Technical Program
  LEARNexactly why Internet of Things is relevant today from an economic, business and technology standpoint.
  HEAR first-hand from industry experts the common issues and requirements for creating a platform for the Internet of Things.
  SEE what new tools and approaches the Internet of Things requires.
  DISCOVER how to drive a distributed approach to the Internet of Things, where applications move to the data.
  FIND OUThow the vast volumes of new data produced by the Internet of Things provides a valuable new source of business insight through advanced analytical techniques.
  MASTER how the ongoing development of smart cities, cars, and houses will enhance connectivity infrastructure.
Lunch Power Panel | Microservices & IoT- Moderated by Jason Bloomberg
In this Power Panel at @DevOpsSummit, moderated by Jason Bloomberg, president of Intellyx, panelists Roberto Medrano, Executive Vice President at Akana; Lori MacVittie, Evangelist for F5 Networks; and Troy Topnik, ActiveState's Technical Product Manager; and Otis Gospodnetic, founder of Sematext; peeled away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud environment, and we must architect and code accordingly. At the very least, you'll have no problem filling in your buzzword bingo cards.


Calling .NET Components from PowerBuilder
Via COM Wrappers – revisited

I've written a number of articles in the past on using .NET components, both visual and non-visual, from a PowerBuilder "Classic" (i.e., Win32) application. Until now, all of them involved using a .NET component that was either provided in the .NET Framework or created using Visual Studio. What changes with PowerBuilder 12 is that we can now write a non-visual component using PowerBuilder.NET, so the solution is entirely PowerBuilder based.

Technically, this really first became possible with the introduction of the .NET assembly target in PowerBuilder 11. However, there were a couple of issues with using this approach at that time:

  1. PowerBuilder 11 (and 11.5) didn't have CLR compliance and so referencing .NET classes from the non-visual object used to create the assembly required the use of conditional code blocks, with their inherent limitations (mainly lack of autoscripting, script validation and somewhat poor documentation of syntax).
  2. PowerBuilder 11 (and 11.5) generated assemblies that were not marked COM visible, a requirement for making them accessible via COM Callable Wrappers (CCW) to PowerBuilder Win32 applications. It is possible to change the setting, for example, by using ILDASM to decompile the assembly, modify the decompiled code and then using ILASM to recompile it. I covered that in my presentation on using .NET assemblies from PowerBuilder at TechWave 2008, so you might look for the materials for that session if you want to research it further. However, that is a less than an ideal approach.

With PowerBuilder.NET in PowerBuilder 12, we now have a fully CLR compliant PowerScript with a full autoscripting implementation, script validation and better documented syntax. What's more, the assemblies generated by PowerBuilder.NET are marked as COM visible, so it's much easier to expose them to Win32 applications via CCW.

Creating the Assembly
We're going to implement the call to the SMTPClient class in the .NET Framework like we did in the earlier examples, except now we're going to do it directly from PowerScript in PowerBuilder.NET (see Listing 1). This code is adapted from the code that Dave Fish used for one of his sessions at TechWave 2010. There are a number of instance variables, indicated by the lowercase "i" prefix, such as iSubject, iIsHTML and iBody. Because PowerBuilder.NET does not (as of this writing) support properties in generated .NET assemblies, we've implemented setter methods on the assembly as well to set those instance variables. The code listing for those are not included because of their trivial nature.

Now that we have a non-visual object that contains these methods, we create a .NET assembly project to tell PowerBuilder to generate that non-visual object as an assembly (see Figures 1 and 2). Deploy the project (creating the assembly) and we're halfway done.

Creating CCW Registry Entries for the Assembly
Now that we have our own .NET assembly, we have to create the registry entries that the PowerBuilder Classic application will use in order to use the assembly. We could also use a manifest file instead of registry entries, something I explained in one of the previous PBDJ articles on using CCWs. However, for this particular demo we're going to stick with registry entries.

The way you get those registry entries is by running the REGASM utility from the .NET SDK on the assembly. I've named this assembly PBSmtpClient.dll, so I would run REGASM on the assembly at the command line as follows:

REGASM  PBSmtpClient.dll /regfile:PBSmtpClient.reg

If you ran REGASM directly against the assembly with no options, it would automatically add the entries to the registry of the machine you ran it on. For a couple of reasons, you might want to generate the registry entries as a registry file and then incorporate it later. One reason is that you might want to use that registry file (or the information in it) to deploy the assembly on other machines.

A second reason is specific to 64-bit operating systems, such as the 64-bit version of Windows 7. When you run REGASM on an assembly on a 64-bit operating system, it only creates the registry entries that are required for 64-bit applications. You'll need to do a bit of copy and pasting to add the information needed for 32-bit applications, such as a PowerBuilder Classic application. What you will do is open the registry file and copy and paste the generated registry entries so that there are two sets in the file. Then for the second set, you will search for HKEY_CLASSES_ROOT and replace it with HKEY_CLASSES_ROOT\Wow6432Node. The Wow6432Node is the subkey of all the main registry keys that contain entries used by 32-bit applications.

For example, the first entry in the file would look something like this:

[HKEY_CLASSES_ROOT\PBSmtpClient.SmtpClient]
@="PBSmtpClient.SmtpClient"

And after your copy, paste and replace operation, there would be an additional entry in the file that would look like this:

[HKEY_CLASSES_ROOT\Wow6432Node\PBSmtpClient.SmtpClient]
@="PBSmtpClient.SmtpClient"

Once you've done that (assuming you're on a 64-bit system) double-click the registry file to have Windows add the information to the registry. Of course if you're on a 32-bit system, you could do that directly with what REGASM generated.

Calling the Assembly from PowerBuilder Classic
Once the registry entries have been added to the Windows registry, a PowerBuilder Classic application can now access the assembly as if it was a standard COM component using OLE Automation. The code is pretty much the same as we've used in previous samples where we were using a Visual Studio-generated assembly:

integer             li_rc
oleobject          smtp

smtp = CREATE oleobject
li_rc = smtp.ConnectToNewObject ( "PBSmtpClient.SmtpClient" )
smtp.SetFrom ( "first.last@domain.com" )
smtp.SetTo ( "bruce.armstrong@teamsybase.com" )
smtp.SetSubject ( "Test" )
smtp.SetBody ( "This is only a test" )
smtp.SetHost ( "mail.domain.com" )
smtp.SendMessage()

smtp.DisconnectObject()
Destroy smtp

A Few Final Thoughts
There are some limitations to this approach, which I also covered in my session at TechWave 2008, primarily related to capturing error information from exceptions raised by the assembly (and I indicated in that session how to address that problem). That aside, the technique should be quite useful for those applications where the amount of calls you need to make to .NET classes is limited enough that a full migration to a WinForm or WPF application is not really justified. Using this technique will allow you to maintain that application as a PowerBuilder Classic application, but still add functionality from .NET as needed.

About Bruce Armstrong
Bruce Armstrong is a development lead with Integrated Data Services (www.get-integrated.com). A charter member of TeamSybase, he has been using PowerBuilder since version 1.0.B. He was a contributing author to SYS-CON's PowerBuilder 4.0 Secrets of the Masters and the editor of SAMs' PowerBuilder 9: Advanced Client/Server Development.

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Testimonials
This week I had the pleasure of delivering the opening keynote at Cloud Expo New York. It was amazing to be back in the great city of New York with thousands of cloud enthusiasts eager to learn about the next step on their journey to embracing a cloud-first worldl."
@SteveMar_Msft
 
How does Cloud Expo do it every year? Another INCREDIBLE show - our heads are spinning - so fun and informative."
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