GeoTools

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 2.4-M4
• Fix Version/s: 2.7-M0
• Component/s: data, main
• Labels:

  None

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);

• Assignee:

  Unassigned

  Reporter:

  Gertjan van Oosten

• Created:

  16/Jul/07 9:00 AM

  Updated:

  02/Jun/11 7:46 AM

  Resolved:

  22/May/10 7:17 AM