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http://jira.codehaus.org/browse/GEOT-1398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jody Garnett reopened GEOT-1398:
--------------------------------
Bleck; api was not deprecated in 2.4.x, so this is still open (just as a QA
problem).
> sort() method does not work on FeatureCollection
> ------------------------------------------------
>
> Key: GEOT-1398
> URL: http://jira.codehaus.org/browse/GEOT-1398
> Project: GeoTools
> Issue Type: Bug
> Components: core filter, data
> Affects Versions: 2.4-M4
> Reporter: Gertjan van Oosten
> Assignee: Jody Garnett
> Priority: Minor
> Fix For: 2.4.2
>
>
> If I try to sort a FeatureCollection, I get a null FeatureList. So I do:
> final FeatureCollection fc = source.getFeatures(filter);
> and this returns my feature collection (an instance of JDBCFeatureCollection
> to be precise). Good. But:
> final SortBy rt = ff.sort(sortField, SortOrder.DESCENDING);
> final FeatureList fl = fc.sort(sort);
> this returns a null FeatureList (ff is the FilterFactory). Hmmm. To figure
> out why, I looked into these three classes (gt2-2.4-M4):
> library/jdbc/src/main/java/org/geotools/data/jdbc/JDBCFeatureCollection.java
>
> unsupported/h2/src/main/java/org/geotools/data/jdbc/collection/JDBCFeatureCollection.java
>
> library/main/src/main/java/org/geotools/feature/DefaultFeatureCollection.java
> Apparently, sorting is not properly implemented (yet).
> As a work-around, sorting via the Query interface works:
> final DefaultQuery query = new DefaultQuery( typeName, filter);
> final SortBy rt = ff.sort(sortField, SortOrder.DESCENDING);
> query.setSortBy(new SortBy[] { sort });
> final FeatureCollection fc = source.getFeatures(query);
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