[Geotools-devel] [jira] (GEOT-4181) FeatureCollection revolution / simplification

[Jody Garnett (JIRA)]

Jody Garnett created GEOT-4181 FeatureCollection revolution / simplification Issue Type: Improvement Affects Versions: 8.0-RC2 Assignee: Unassigned Components: opengis Created: 20/Jun/12 1:09 AM Description: As per this proposal: http://docs.codehaus.org/display/GEOTOOLS/FeatureCollection+revolution Goal is to reduce feature collection down to the following: public interface SimpleFeatureCollection extends FeatureCollection<SimpleFeatureType,SimpleFeature> { // feature access - close when done! SimpleFeatureIterator features() // feature access with out the loop void accepts(FeatureVisitor, ProgressListener); // metadata SimpleFeatureType getSchema(); String getID(); AttributeDescriptor getDescriptor(); // pending prosal // sub query SimpleFeatureCollection subCollection(Filter) SimpleFeatureCollection sort(SortBy) boolean contains(Object) boolean containsAll(Collection<?>) // summary information ReferencedEnvelope getBounds() boolean isEmpty() int size() // convert to array Object[] toArray() <O> O[] toArray(O[]) } Discussion: toArray methods are there on the off chance the implementation can provide a quick implementation? Is this another good intension? Probably. Could be replaced with a DataUtilities method subCollection & sort functionality have been covered by Query these days; and could be removed. contains and containsAll are interesting; would almost expect look up by FeatureId instead getID() is left from a time when FeatureCollection implemented Feature; it is still used when encoding getDescriptor is technically accurate; however we are used to working with FeatureType isEmpty() earns its keep; size() == 0 is not a replacement as you need to count the whole set with that in mind containsAll falls into the same idea; how to prevent a multi pass operation accepts earns its keep for Jody Garnett, Andrea Aime wants the javadocs cleaned up so it is obvious that the feature being visited is a Flyweight (ie the same object with just the values changing inside each time) Project: GeoTools Priority: Major Reporter: Jody Garnett

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