A simple undo

Oh no .. I shouldn’t have double-clicked 🙁

When I explore a graph, it always happens to me at some point. I double-click a node and oops …  my screen fills up with way more nodes than I anticipated. And since I’m almost always operating in autoComplete mode, that also includes all relationships connecting the newly loaded neighbours to the node I double-clicked.

Yes, I know, we have the default Neighbours panel that allows me to explore the graph in a controlled way by loading only selected neighbours. But well, sometimes you’re in a hurry and and a bit careless …

So I figured there must be a way to just go back one step and unload all nodes and relationships that result from a double-click.

IA_IO to the rescue 🙂

Fortunately, Graphileon has the IA_IO function that can help us. It can store any run-time variable and that is exactly what we need here: store the nodes and relationships that are present in the IA_NetworkView at the moment a nodeDoubleClick event is triggered.

The logic is quite simple (click on the picture below for an interactive diagram with the relevant functions and triggers)  :

  • Execute an IA_IO function upon the first nodeDoubleClick event that occurs, and ensure that it stays alive by setting stayAlive:session or stayAlive:dashboard . The IA_IO function has an _instance name, so we can reference it later.
  • Store the two arrays with nodes and relationships in the placeholders on the IA_IO function.
  • The undo functionality is implemented using a batch trigger, i.e. a  [:TRIGGER {type:'batch'}] relation from the IA_NetworkView to itself.  It retrieves the nodes and relations from the IA_IO function instance and sends them back to the IA_NetworkView  .


The video below shows the undo functionality in action.

Card image cap
Connect Graphileon server edition to your local graph store

When running our Graphileon Personal Edition you will likely connect it to a store running locally or on a cloud server. However, when running a server edition, either on-premise or using our AWS edition, you may still want to connect to a store running on your own machine. This video explains how to connect your … Continued

Card image cap
Graphileon Visual Query Builder

In a short series of videos Graphileon founder Tom Zeppenfeldt demonstrates the different iterations of a Visual Query Builder (VQB) application. This VQB allows non-developers to benefit from the power of graph databases. It simultaneously demonstrates the capabilities of the low-code Graphileon platform as this entire application is configured by connecting Graphileon functions. The first … Continued

Card image cap
Graphileon’s graph-based proposal wins JenV Hub Challenge of Netherlands Ministry of Justice and Security

Graphileon’s graph-based proposal wins JenV Hub Challenge of Netherlands Ministry of Justice and Security Today we proudly announce being awarded a contract to design and test a solution that facilitates the drawing of networks for the Dutch screening authority Justis. Justis is responsible for providing information to all controlling and/or regulatory authorities (e.g. the police), … Continued

Get started with the Personal Edition

The easiest way to get to know Graphileon is by using the Personal Edition. Build graphy applications and browse your graph stores in a way you never did before.