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Persistent variables in BIRT scripts [message #1006487]

Thu, 31 January 2013 08:36

Eclipse User

Hi,

I am not sure how to use correctly vars[]: with BIRT 4.2.1, i noticed when we create a new var in the "Variables" section, if we set it with some "onCreate" script:

vars["myVar"]="myValue"

Then in a "onRender" script, vars["myVar"] will not be defined, it does not look persistent. But if we set it like this in "onCreate":

reportContext.setPersistentGlobalVariable("myVar","myValue");

This time, in a "onRender" script, vars["myVar"] is equals to "myValue".

Since it is more friendly to drag and drop "myVar" from Variables section than writing reportContext.getPersistentGlobalVariable("myVar") in a render expression, i wonder if we can rely on this behavior:

When we add a new variable in "Variables" eclipse designer section, does "setPersistentGlobalVariable" refer to this variable, or is it just a side-effect (may be a bug) which could change in a future version?

Thanks!

[Updated on: Thu, 31 January 2013 08:38] by Moderator

Re: Persistent variables in BIRT scripts [message #1006537 is a reply to message #1006487]

Thu, 31 January 2013 10:41

Eclipse User

I don't see the same issue recalling the vars["myVar"] if you set it like: vars["myVar"] = "myValue". Can you create a sample design showing the issue that I can run?

Re: Persistent variables in BIRT scripts [message #1006973 is a reply to message #1006537]

Sun, 03 February 2013 06:43

Eclipse User

Thank for your response Michael.

mmh your are right, finally i can't reproduce this issue neither Confused

I probably drunk too much last week, sorry!

I did not find a tech-note or a post concerning these "Report Variables", can we rely on the fact they are persistent (can be used in a "render" event when they are initialized in a "run" event such onCreate)?

Thanks!

[Updated on: Sun, 03 February 2013 06:45] by Moderator

Re: Persistent variables in BIRT scripts [message #1007022 is a reply to message #1006973]

Mon, 04 February 2013 01:00

Eclipse User

Ha ha. That's quite alright! Yes, there should be no issues using report variables across events. Report and Page variables were introduced back in 2.5. Here is a look at the new and notable, from then.

New and Notable - BIRT 2.5

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