topic Re: Associations and Javascript in Alfresco Archive

Associations and Javascript

sbsrulz — Fri, 13 Feb 2009 07:17:22 GMT

I am trying to create multiple associations (signatures of customers placed in a space named 'Signatures') to a document using javascript…Here is the code:var docname = document.name.substring(0, document.name.lastIndexOf('_'));var len = docname.length();var docs = search.luceneSearch("PATH:\"/app:c

Re: Associations and Javascript

uzi — Fri, 13 Feb 2009 10:28:55 GMT

Hi there,

You may have hit on one of the interesting quirks about working with Java objects in JavaScript.

In JavaScript, you can test for string equality using the == and != operators. This compares the values of the strings and everything works really nicely between two JavaScript strings.

In Java, as you know, you cannot use == or != since that's performing a comparison between the object instances (which could have the same value but which could be entirely different objects). Java has different mechanism for this and provides .equals() as a means for comparing two objects.

In looking at your code, it seems possible that you're comparing a JavaScript string with a Java string.

A better means of comparison maybe to call toString() on the objects and then compare those results. Check for null ahead of time of course.

Let me know if this helps.

Michael

Re: Associations and Javascript

sbsrulz — Fri, 13 Feb 2009 11:12:28 GMT

Well thanks… I had completely forgotten about it.

By the way, the .toString() didnt work but I tried:

if (String(docname) == String(docname1))

and got it working

Thanks Again

Re: Associations and Javascript

uzi — Fri, 13 Feb 2009 12:47:53 GMT

That's great. I thought about the toString approach after I wrote the post and thought it might cause trouble as well.
Building a new String object and then doing the compare is a better solution!

Michael