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Re: Destroying objects [message #38041 is a reply to message #37981]

Mon, 16 February 2004 11:55

JD Smith
Messages: 850
Registered: December 1999

Senior Member

On Wed, 11 Feb 2004 16:26:44 -0600, Michael Wallace wrote:

> I have just started working with the IDL-Java Bridge and object
> programming in general and have a very basic question. Is there a way
> to destroy objects that get created which you haven't explicitly created
> yourself? Here's a simple example of the problem:
>
>
> ; Method 1
> ; Get the number of columns of a Java ResultSet
>
> cols = (result_set -> getMetaData()) -> getColumnCount()
> obj_destroy, result_set
>
> help, /heap ; shows an object associated with ResultSetMetaData
> ; but how do you destroy it??
>

> So, is there a way to use Method 1, but still have a way to destroy the
> extra object that gets created? There's no variable name associated
> with it, so how can I use obj_destroy, if at all? Will I be forced to
> go by Method 2 and use only one '->' per line? I was so hopeful I could
> be lazy and use multiple '->' per line.... *sigh*

Not pretty, but:

cols = ((meta = result_set -> getMetaData())) -> getColumnCount()
obj_destroy,meta,result_set

should work. Then again, you have to wonder about returning objects
whose only purpose is to report a value and then get destroyed. I
should think something like:

result_set->GetMetaData,COLUMN_COUNT=cols

would be a much cleaner syntax, and not employ any intermediary
objects to keep track of.

JD

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[Message index]

		Destroying objects By: Michael Wallace on Wed, 11 February 2004 14:26
		Re: Destroying objects By: JD Smith on Tue, 17 February 2004 12:30
		Re: Destroying objects By: David Fanning on Tue, 17 February 2004 13:19
		Re: Destroying objects By: David Fanning on Mon, 16 February 2004 14:06
		Re: Destroying objects By: JD Smith on Mon, 16 February 2004 13:11
		Re: Destroying objects By: David Fanning on Mon, 16 February 2004 13:22
		Re: Destroying objects By: Michael Wallace on Mon, 16 February 2004 12:46
		Re: Destroying objects By: JD Smith on Mon, 16 February 2004 11:55
		Re: Destroying objects By: David Fanning on Mon, 16 February 2004 10:18
		Re: Destroying objects By: David Fanning on Fri, 18 January 2013 10:23
		Re: Destroying objects By: Helder Marchetto on Fri, 18 January 2013 10:07
		Re: Destroying objects By: David Fanning on Fri, 18 January 2013 09:50
		Re: Destroying objects By: chris_torrence@NOSPAM on Fri, 18 January 2013 09:12

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