org.deegree.feature
Class AbstractFeatureCollection

java.lang.Object
  org.deegree.feature.AbstractFeature
      org.deegree.feature.AbstractFeatureCollection

All Implemented Interfaces:

java.lang.Iterable<Feature>, java.util.Collection<Feature>, TypedObjectNode, Feature, FeatureCollection, GMLObject

Direct Known Subclasses:

GenericFeatureCollection

public abstract class AbstractFeatureCollection
extends AbstractFeature
implements FeatureCollection

Abstract base class for common FeatureCollection implementations.

Version:

$Revision:$, $Date:$

Author:

Markus Schneider , last edited by: $Author:$

Field Summary

Fields inherited from class org.deegree.feature.AbstractFeature

fid, ft, standardProps

Constructor Summary

protected

AbstractFeatureCollection(java.lang.String fid, FeatureCollectionType ft) Creates a new AbstractFeatureCollection instance.

Method Summary

protected Envelope	calcEnvelope() Helper method for calculating the envelope of a feature.
Envelope	getEnvelope() Returns the envelope of the feature.
FeatureCollection	getMembers(Filter filter, XPathEvaluator<Feature> evaluator) Returns the member features that match the given Filter.
FeatureCollectionType	getType() Returns the type information for this feature.

Methods inherited from class org.deegree.feature.AbstractFeature

getGMLProperties, getId, getName, getProperties, getProperties, getProperty, setId, setProperties, setPropertyValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.feature.FeatureCollection

getFeatureStream

Methods inherited from interface org.deegree.feature.Feature

getGeometryProperties, getGMLProperties, getId, getName, getProperties, getProperties, getProperties, getProperties, getProperty, getProperty, setId, setProperties, setProperties, setPropertyValue, setPropertyValue

Methods inherited from interface java.util.Collection

add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

Constructor Detail

AbstractFeatureCollection

protected AbstractFeatureCollection(java.lang.String fid,
                                    FeatureCollectionType ft)

Creates a new AbstractFeatureCollection instance.

Parameters:

fid - feature id or null if the feature is anonymous (discouraged for most use cases)

ft - feature type, must not be null

Method Detail

getType

public FeatureCollectionType getType()

Description copied from interface: Feature

Returns the type information for this feature.

Specified by:

getType in interface Feature

Specified by:

getType in interface FeatureCollection

Overrides:

getType in class AbstractFeature

Returns:

the type information, never null

getMembers

public FeatureCollection getMembers(Filter filter,
                                    XPathEvaluator<Feature> evaluator)
                             throws FilterEvaluationException

Description copied from interface: FeatureCollection

Returns the member features that match the given Filter.

Specified by:

getMembers in interface FeatureCollection

Parameters:

filter - Filter to be applied, must not be null

evaluator - evaluator to use for evaluating XPath expressions, must not be null

Returns:

matching feature instances as a new FeatureCollection

Throws:

FilterEvaluationException - if an exception occurs during the evaluation of the Filter

getEnvelope

public Envelope getEnvelope()

Description copied from interface: Feature

Returns the envelope of the feature.

Specified by:

getEnvelope in interface Feature

Overrides:

getEnvelope in class AbstractFeature

Returns:

the envelope of the feature, or null if the feature has no envelope information / geometry properties

calcEnvelope

protected Envelope calcEnvelope()

Description copied from class: AbstractFeature

Helper method for calculating the envelope of a feature.

Overrides:

calcEnvelope in class AbstractFeature

Returns:

envelope of all geometry properties of the feature