Oracle and Fusion Middleware Blog

Although it’s not recommended to store your application logic in MongoDB, it’s sometimes useful to create Javascript functions for database management purposes in the database.

The process is really easy. MongoDB has a special collection named system.js, that can contain Javascript functions. Creating a function in MongoDB is as simple as inserting a record with the name and the function code…

Speeding up your Time Machine backups

Okay, this has to be the weirdest trick I’ve ever posted. Usually I’m a happy Mac user, but sometimes I don’t understand why things are so slow. Like an initial backup of the SSD in my MacBook Air. Size: approximately 160GB. time to complete backup: Forever.

How to speed up a Time Machine backup

When checking the activity with my favorite tool, iStat Menus,  I see that there is hardly any disk…

[Dutch] Meld je aan voor Eye on IT

Eye on IT – inspirerende keynotes en presentaties

Op 16 mei 2017 vindt het Eye on IT evenement plaats bij The Human Network. In een wereld waarin digitalisering zorgt voor snelle ontwikkelingen, is het belangrijk op de hoogte te blijven van die ontwikkelingen. Kom naar dit evenement en laat u inspireren door onze keynote-sprekers die u alles vertellen over de ontwikkelingen op het gebied van…

Converting a hexstring to ObjectId for MongoDB in Javascript

How to convert a string value to ObjectID

Sometimes, the ObjectID of your MongoDB document is delivered as a 24 character hexstring. You can’t just compare this hexstring to an ObjectID, because the comparison will fail.

The solution is as follows:

var mongoose = require('mongoose' ); var hexstring = '58666c89d4bc6622ed5373dc'; // convert it to ObjectID var ObjIDtype =…

How to fix SVN not able to update or clean working copy

Past week, it happened twice to me that SVN was not able to update. When updating or committing, the message “Previous operation has not finished; run ‘cleanup’ if it was interrupted” appears. But when I cleaned my working copy, that failed too.

For fixing this issue, install SQLite (download it here). Go to your SVN working directory, you’ll find a wc.db (the database where SVN keeps it’s date)…

creating Human Task forms in Oracle PCS

A new post on the Whitehorses  creating forms in Process Cloud Service

In this blog I’ll explain the connection between human tasks and forms, how you can add basic validations to form elements, and how you deploy your process and test your forms.

My Whitebook about Node.js is published

My latest Whitebook is published on the Whitehorses knowledge site. It’s written in Dutch though.

If you’re looking for some in-depth articles in English, check out the Whitehorses blogposts about Node.js:

http://blog.whitehorses.nl/2016/03/19/node-js-serverside-javascript/

http://blog.whitehorses.nl/2016/06/23/node-js-tutorial-part-1-setting-up-your-environment/

http://blog.whitehorses.nl/2016/0…

Time Machine issue: not able to activate time machine

What if you always use OS X Time Machine for your backups and find out that restoring doesn’t work as you hoped? I found out recently that the “Activate Time Machine” option didn’t work anymore. It was accessible in the menu, but clicking it did not give a response.

I scoured the internet for a solution, went through all my log files and even did a complete restore (fortunately that still…

Check these great Oracle JET blogposts

I just want to bring some nice blogposts on Oracle JET to your attention. Oracle JET is a new Javascript Extention Toolkit (yes, yes: JET) from Oracle for interacting with Oracle products and Oracle Cloud services.

They are written by my colleague Herman Brunnekreef. This are the topics:

 Visualizing data with Oracle JET,

Routing and responsive Layout with Oracle JET,

Integrating Oracle Map in…

Running XCode simulator results in “LaunchServicesError error 0.”

So, one moment you’re app was running fine in the simulator and the next moment you get an error saying  “The operation could not be completed. (LaunchServicesError error 0.)”

Bummer! When you check your logs (see ~/Library/Logs/CoreSimulator/CoreSimulator.log or ~/Library/Logs/CoreSimulator/[Device UDID]/system.log) you’ll find errors like “/.app did not have a CFBundleIdentifier in its…

Javascript keyboard events: the difference between keypress and keydown

Some things you learn the hard way. I was trying to catch some keyboard events in order to replace comma’s with dots in html input items and validating the input against a regular expression along the way. The results I got were at best confusing, but never as expected.

I did some reading on sites like http://javascript.info/tutorial/keyboard-events, and found out there is a fundamental…

Provisioning to your device is now free with XCode for iOS

Maybe I’m a little late to the party, but apparently this information is known by not so many people. Since XCode 7 you are now able to provision (or install) to your device without a paid developer account.

However, it may be possible that it still doesn’t work for you. In that case, try the following options, as mentioned in the release notes.

Accounts with expired Apple Developer Program…

IBM released a SWIFT language sandbox in the browser.

Just a few days ago, IBM released a sandbox for Apple’s SWIFT language, and it works in the browser. I think that’s great news, now there is a convenient and easy way for everyone to become acquainted with  SWIFT.

The news is also noteworthy because the site is announced only a few days after Apple put their money where their mouth is and made SWIFT available in the public domain. There must have…

Not all regions in APEX can be refreshed using the PPR (partial page refresh) mechanism. Especially PL/SQL regions are difficult to refresh with AJAX.

Although… the fact that the HTML in a PL/SQL region is constructed in PL/SQL may be in your advantage. With the use of a tiny bit of JQuery and an application process, you will be able to update a region asynchronously. How? I’ve described that on…

The latest Whitebooks: improving performance with OSB split-join and Behaviour Driven Development in Scrum

There are a couple of interesting new articles on the Whitehorses knowledge site. All in Dutch, but Google Translate can fix that for the none-Dutch speaking audience.

Remco Cats has written an article about Behaviour Driven Development, a new concept in Scrum. It should help reduce the amount of left-over testwork at the end of the scrum, and improve the communication in your team. Read here how…