Package org.openjump.core.ui.plugin.tools.aggregate

Class FeatureCollectionAggregator

java.lang.Object

org.openjump.core.ui.plugin.tools.aggregate.FeatureCollectionAggregator

public class FeatureCollectionAggregator
extends Object

Creates a new FeatureDataset from a source FeatureCollection,

• a list of attributes to be used as the key
• a list of aggregator function to aggregate attribute values which are not part of the key

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FeatureCollectionAggregator.Key

Constructor Summary

Constructors

Constructor	Description
FeatureCollectionAggregator(FeatureCollection fc, List<String> keyAttributes, List<AttributeAggregator> aggregators)

Method Summary

Modifier and Type	Method	Description
FeatureCollection	getAggregatedFeatureCollection()	Returns a FeatureCollection where attributes defined by aggregators are aggregated on features having the same key.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FeatureCollectionAggregator

public FeatureCollectionAggregator(FeatureCollection fc,
                                   List<String> keyAttributes,
                                   List<AttributeAggregator> aggregators)
                            throws org.openjump.core.ui.plugin.tools.aggregate.FeatureCollectionAggregator.AggregatorException

Throws:

org.openjump.core.ui.plugin.tools.aggregate.FeatureCollectionAggregator.AggregatorException

Method Detail

getAggregatedFeatureCollection

public FeatureCollection getAggregatedFeatureCollection()

Returns a FeatureCollection where attributes defined by aggregators are aggregated on features having the same key. Feature's key are defined by one or more attributes from the source featureCollection.

Returns:

the featureCollection with aggregated attributes