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ORDA Classes to handle your data model

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In a previous blog post, we introduced you to the world of ODRA data model classes. Now it’s time to get our hands dirty and learn more!

You already know that ORDA’s structure (datastore, dataclass, entity, entity selection) is made up of objects. But they’re not just objects, they’re strongly-typed objects linked to specific ORDA classes. This means that you can write functions to hide the complexity of your data’s physical implementation.

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Welcome to the world of ORDA classes

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ORDA was a revolution with 4D v17. It opened a whole new world of possibilities and took you to another programming dimension. A dimension where you can easily develop applications using an object-oriented approach.

We didn’t stop there! We continued to add enhancements to ORDA through a set of features in each subsequent feature release. Now with 4D v18 R4, we’re thrilled to be going another step further with the availability of ORDA data model classes. Classes dedicated to your data model.

This will greatly elevate your code. Your applications can now easily expose services, be more manageable and easier to maintain, and seamlessly integrate with other applications.

This is another big feature made possible thanks to the projects!

 

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An intro to object-oriented programming in 4D: Classes

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Many of you have have been asking to be able to define an object type ever since the Object type became available. Thanks to object notation, many of you dream of having object functions.  Dream no more and say hello to classes in 4D v18 R3 project database! In this blog post, we’re introducing one of the most interesting concepts of object-oriented programming … along with a database example and a bonus video!

News

4D v18 R4 is Here

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I’m very happy to announce that 4D v18 R4 is now available!

4D v18 R4 is one of the best feature releases ever delivered, with 20+ new features added to 4D’s ever-growing list.

From the 4D language that keeps getting better, to new capabilities 4D for iOS offers for building enriched apps, to the implementation of 4D Write Pro features you’ve requested. PLUS a whole new set of 4D View Pro commands to give you further control over your documents.

Without further ado, here’s a sneak peek of what’s in store for you:

Guest Post

How to create a simple “TimeStamp” class in 4D

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by guest author Tiran Behrouz, 4D developer (Vancouver, Canada) 

The introduction of ORDA in 4D v17 was a game-changer. Now with the introduction of classes in 4D v18 R3, we will witness a paradigm shift in 4D programming. We can now take advantage of object-oriented programming concepts such as polymorphism, composition, and inheritance to write our own class libraries. In this video, I demonstrate how to code a simple TimeStamp class using 4D and ORDA. 

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New declaration syntax for an intuitive autocompletion

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Have you ever wondered about 4D’s autocompletion feature or asked yourself why 4D suggests all functions used in the code? Since an object is a very generic type, 4D only knows what it’s really storing at runtime. However, that doesn’t help much when you’re writing your code.

4D now offers a new, alternative syntax which will greatly enhance autocompletion when declaring your variables.

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4D for iOS: Push Notifications

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4D v18 R4 delivers a very exciting feature … Push notifications. These are messages sent directly to the user’s mobile device from your app. Push notifications provide users with relevant information to encourage them to engage with an app. As of this feature release, 4D for iOS not only allows doing so but also allows you to do it with ease!

For email authentication, 4D for iOS also makes your life easier.

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4D for iOS: Email authentication

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Monitoring access to your mobile app is a very important capability that deserves further consideration. Email validation is one of the simplest and most secure ways to determine the authenticity and legitimacy of the person trying to log into your app. 4D for iOS enables you to easily handle this validation process by verifying that an email comes from whom it claims to be sent from, and by allowing you to block harmful uses of the email.