Import image resources via LotusScript & Java

People have created various versions where you can import image resources in a NSF database using LotusScript. Basically you mimic the functionality of "Import Image Resource" button present in Domino Designer via code.

Some of the examples can be found here and here. Here is my version of doing this same thing using combination of LotusSciript & Java with LS2J.

Three people icon...

Here are some three people icons similar to Lotus Notes. I will be updating it as when I come across new logos... :)

Lotus Notes

MySpace

"loaded" vs "rendered" in XPages

I couldn’t find many resources on the exact difference between loaded and rendered property available in XPage controls except for this blog by Thiyagarajan.

When you hover your mouse over loaded property it says – “Specifies whether or not the control should be created when the page is loaded.” while for rendered it says – “Indicates whether or not control should be displayed or processed on any subsequent form submission.”. Enabling the properties (exclusively) does not generate the control in the web page. But this is where the similarity ends. It was after a discussion with Sven Hasselbach on XPages forum, I understood the usage of these properties.

Create two computed fields cfLoaded and cfRendered with loaded & rendered property set to false in them respectively. Now add another computed field with following code:

Accessing XPages global objects in Java

Update 24-Dec-2011: Added method to access session and database.

Update 10-Mar-2012: Updated the view object as it was pointing to a super class. Thanks to Tom pointing that one out.

Update 22-May-2012: Rectified the code to get viewScope. Thanks to Jens Winkelmann for pointing it out.

Update 16-Mar-2013: Added link to get getComponent equivalent in Java.

Tim Tripcony in his reply to one of the questions in the Notes/Domino XPages development forum had suggested using Java over SSJS to improve XPages performance. He basically said – “...Minimize the use of SSJS (server-side JavaScript). Every time any SSJS expression is evaluated, Domino parses the expression in realtime into an abstract syntax tree, then runs Java code that is a rough approximation of how the JavaScript specification states that code matching the detected syntax should run. The more you move your logic directly into true Java classes, the less expensive it is to execute, so it runs faster...”

So I started thinking about how can we access various XPages Global Objects like – facesContext, sessionScope, context, etc. from Java classes.

Well... here's how we can access it:

Importing script library in Domino Designer

Domino Designer provides facility to import image resources, style sheets and file resources.

But for script libraries, there is no such option.

So when I need to import a third-party JavaScript script library I usually would create one and then copy-paste the contents into it. But there's an easier way to do it.

Where are the breakpoints stored?

I am sure at some point or another you would have used breakpoints while debugging your LotusScript code. But I always wondered how does Lotus Notes store them. Well, it stores in the profile documents. To view the profile documents in your database there free utilities available like - NotesPeek (my favorite), ProfileMgr by Andre Guirard or NoteMan.

Using NotesPeek you can see a profile document named "breakpoints_" which stores all the breakpoints.

Get Java class names for variables defined in SSJS in XPages

Every global object or variable in SSJS is an object of a class defined in Java. The help documentation says that facesContext is an object of class com.ibm.xsp.domino.context.DominoFacesContext. But what about facesContext.getExternalContext() and other variables?

Well in Java every class inherits directly or indirectly from its base class java.lang.Object. This class has a method named getClass() which returns object of class java.lang.Class (Yes, there is a class called "Class" in Java!). With this you can find out to which class the object belongs, its methods, super class and lot more.

Create a new XPage and add a computed field. Add the code given below for its value and preview it in browser.