Product

Programmatically access elements in 4D Write Pro

Automatically translated from English

4D Write Pro keeps offering more and more programming capabilities! Let’s say you want to programmatically change the style of a table, paragraph, or image in an existing 4D Write Pro document. With 4D v17, it’s possible! Now you can access any element or part of a document, by programming. These parts, called elements, will be returned either as a collection thanks to the WP Get elements function, or as a single element with WP Get element by ID function.

Product

Locking entities with ORDA

Automatically translated from English

The ORDA series continues! In this blog post, we’ll look at how you can use locks in your databases with ORDA concepts! It’s not uncommon to need to manage conflicts that might occur when several users or processes load and/or attempt to modify the same records at the same time. Record locking is a methodology used in relational databases to avoid inconsistent updates to data.

ORDA provides an optimistic locking mode in addition to the one you already know (pessimistic locking).

Product

Loops, loops and … more loops!

Automatically translated from English

Like many other programming languages, 4D provides the ability to iterate over numbers with a For(…) / End for statement, or over a condition thanks to the While(…)/End while and Repeat/Until(…) keywords. These iterations (or loops) are very useful, but not the most appropriate way to iterate over advanced data types such as collections and entity selections. That’s why the new For each(…)/End for each iterator has been created, to help ease your coding!

News

Highlights of the technical announcements from 4D Summit 2018!

Automatically translated from English

4D Summit 2018 which took place in Paris and Washington DC recently, was filled with huge product announcements and a plethora of exciting sessions. It was a great experience for everyone who was able to attend! More than 450 attendees were on site to witness a lot of incredible revelations. 

In this blog post, we’ll recap the highlights from this year’s 4D Summit.

Product

ORDA: work with objects and collections

Automatically translated from English

In this latest addition to the ORDA series, we’ll look at how the new ORDA concepts can interact with existing objects and collections. In fact, it’s possible to turn entities and entity selections into objects and collections, as well as build entities and entity selections from objects and collections. By doing so, you can easily integrate ORDA code within your existing code. You can take full advantage of ORDA without needing to rewrite your code!

Product

Going back and forth between current selections to ORDA

Automatically translated from English

ORDA is a major innovation of 4D v17, this is why we’re dedicating an entire series of blog posts to ORDA. While ORDA has its own concepts that are very different from the classic approach, it’s still possible to mix ORDA with your existing code.

In a nutshell, this blog post will show you how you can update the current selection of a table from an entity selection and get an entity selection from the current selection of a table. It’ll allow you to smoothly integrate ORDA concepts into your existing 4D code, step by step.

Product

Query your database with an object-oriented approach

Automatically translated from English

After learning how you can create, update, and delete data, here is a new entry in the ORDA series. In this post, you will see how you can query your datastore in an object-oriented mode. With ORDA, queries are lighter, more readable, and you can navigate through the whole data model using object-oriented concepts !

On top of that, ORDA makes it possible to very easily query several related tables, manage recursive relations on the same table, and use several logical operators in a single query. Plus, you don’t have to worry about setting relations between tables … manually or automatically !