I got this from Andrea Aime as response on an other topic some time ago. I
cannot find it anymore in the archive.
I should avoid FeatureCollection because it is build in memory. I cannot close
FeatureIterator because I don't use it explicitly (or maybe I don't know how to
do this).
Ron
________________________________
From: Jody Garnett <[email protected]>
To: Ron Lindhoudt <[email protected]>
Cc: "[email protected]"
<[email protected]>
Sent: Sunday, November 11, 2012 11:33 AM
Subject: Re: [Geotools-gt2-users] Query.setSortBy does not sort when Query is
used in FeatureLayer.setQuery
Next question what do you mean by memory leakage? If it is a thing I want to
know about it.
As long as the featureIterators are closed we should not leak connections to
oracle.
And nobody should be leaking memory.
--
Jody Garnett
On 11/11/2012, at 7:47 AM, Ron Lindhoudt <[email protected]> wrote:
It is an Oracle feature source.
>There is no error, but no sorting takes place.
>The feature source supports sorting because this works well:
>
>query.setSortBy(sortBy);
>FeatureCollection featureCollection =
featureSource.getFeatures(query);
>
>
>
>Beacuse FeatureCollection can have memory leakage I wanted to avoid using
>FeatureCollection.
>
>This does not work:
>
>
>query.setSortBy(sortBy);
>
>FeatureLayer.setQuery(query);
>
>
>Ron
>
>
>
>________________________________
> From: Jody Garnett <[email protected]>
>To: Ron Lindhoudt <[email protected]>
>Cc: "[email protected]"
><[email protected]>
>Sent: Sunday, November 11, 2012 7:53 AM
>Subject: Re: [Geotools-gt2-users] Query.setSortBy does not sort when Query is
>used in FeatureLayer.setQuery
>
>
>Do you have any more details? What happens beyond - does not work. What
>feature source are you working with?
>
>
>Behind the scenes we try and combine your query with each query defined by
>your style - and then draw the features as they come back.
>
>
>Depending on the implementation if feature source ( and if it supports sorting
>) you may get different behavior.
>
>--
>Jody Garnett
>
>On 07/11/2012, at 12:33 PM, Ron Lindhoudt <[email protected]> wrote:
>
>
>The Query.setSortBy does not work when used for FeatureLayer.setQuery
>>
>>There is no error but it just doesn't sort.
>>
>>
>>
>>The sorting works correctly when I use this:
>>
>>
>>FeatureCollection featureCollection = featureSource.getFeatures(query);
>>
>>
>>But because FeatureCollections have memory risks I want to avoid it.
>>
>>
>>
>>
>>Ron
>>
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