com.vividsolutions.jump.feature

Class FeatureDataset

java.lang.Object

com.vividsolutions.jump.feature.FeatureDataset

All Implemented Interfaces:

FeatureCollection, Serializable

public class FeatureDataset
extends Object
implements FeatureCollection, Serializable

Default implementation of FeatureCollection.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FeatureDataset(Collection newFeatures, FeatureSchema featureSchema) Creates a FeatureDataset, initialized with a group of Features.
FeatureDataset(FeatureSchema featureSchema) Creates a FeatureDataset.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Feature feature) Adds a feature to this collection.
void	addAll(Collection features) Adds multiple features to this collection.
void	clear() Removes all features from this collection.
boolean	contains(Feature feature) Returns whether or not this Feature is in this collection
com.vividsolutions.jts.geom.Envelope	getEnvelope() Because the envelope is cached, the envelope may be incorrect if you later change a Feature's geometry using Feature#setGeometry.
Feature	getFeature(int index) Returns the Feature at the given index (zero-based).
List	getFeatures() Returns an unmodifiable List of the features in this collection
FeatureSchema	getFeatureSchema() Returns information about this FeatureCollection
void	invalidateEnvelope() Clears the cached envelope of this FeatureDataset's Features.
boolean	isEmpty() Returns whether this collection has no features.
Iterator	iterator() Returns an Iterator over the features
List	query(com.vividsolutions.jts.geom.Envelope envelope) A quick search for features, using an envelope comparison.
Collection	remove(com.vividsolutions.jts.geom.Envelope env) Removes the features which intersect the given envelope
void	remove(Feature feature) Removes a feature from this collection.
void	removeAll(Collection features) Removes multiple features from this collection.
int	size() Returns the number of features in this collection.

Methods inherited from class java.lang.Object

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

Constructor Detail

FeatureDataset

public FeatureDataset(Collection newFeatures,
              FeatureSchema featureSchema)

Creates a FeatureDataset, initialized with a group of Features.

Parameters:

newFeatures - an initial group of features to add to this FeatureDataset

featureSchema - the types of the attributes of the features in this collection

FeatureDataset

public FeatureDataset(FeatureSchema featureSchema)

Creates a FeatureDataset.

Parameters:

featureSchema - the types of the attributes of the features in this collection

Method Detail

getFeature

public Feature getFeature(int index)

Returns the Feature at the given index (zero-based).

getFeatureSchema

public FeatureSchema getFeatureSchema()

Description copied from interface: FeatureCollection

Returns information about this FeatureCollection

Specified by:

getFeatureSchema in interface FeatureCollection

Returns:

the types of the attributes of the features in this collection

getEnvelope

public com.vividsolutions.jts.geom.Envelope getEnvelope()

Because the envelope is cached, the envelope may be incorrect if you later change a Feature's geometry using Feature#setGeometry.

Specified by:

getEnvelope in interface FeatureCollection

Returns:

the smallest Envelope enclosing all the Features in this collection

getFeatures

public List getFeatures()

Description copied from interface: FeatureCollection

Returns an unmodifiable List of the features in this collection

Specified by:

getFeatures in interface FeatureCollection

Returns:

a read-only view of all the features

isEmpty

public boolean isEmpty()

Description copied from interface: FeatureCollection

Returns whether this collection has no features.

Specified by:

isEmpty in interface FeatureCollection

Returns:

whether or not the size of this collection is 0

query

public List query(com.vividsolutions.jts.geom.Envelope envelope)

Description copied from interface: FeatureCollection

A quick search for features, using an envelope comparison.

Specified by:

query in interface FeatureCollection

Parameters:

envelope - the envelope to query against

Returns:

a List containing the features whose envelopes intersect the given envelope

add

public void add(Feature feature)

Description copied from interface: FeatureCollection

Adds a feature to this collection.

Specified by:

add in interface FeatureCollection

Parameters:

feature - a Feature to add to the end of this collection

contains

public boolean contains(Feature feature)

Returns whether or not this Feature is in this collection

Returns:

true if this feature is in this collection, as determined using Feature#equals

remove

public Collection remove(com.vividsolutions.jts.geom.Envelope env)

Removes the features which intersect the given envelope

Specified by:

remove in interface FeatureCollection

Returns:

the removed features

remove

public void remove(Feature feature)

Description copied from interface: FeatureCollection

Removes a feature from this collection.

Specified by:

remove in interface FeatureCollection

Parameters:

feature - a Feature to remove from this collection

clear

public void clear()

Removes all features from this collection.

Specified by:

clear in interface FeatureCollection

size

public int size()

Description copied from interface: FeatureCollection

Returns the number of features in this collection.

Specified by:

size in interface FeatureCollection

Returns:

the number of features in this collection

iterator

public Iterator iterator()

Description copied from interface: FeatureCollection

Returns an Iterator over the features

Specified by:

iterator in interface FeatureCollection

Returns:

an Iterator over the features

invalidateEnvelope

public void invalidateEnvelope()

Clears the cached envelope of this FeatureDataset's Features. Call this method when a Feature's Geometry is modified.

addAll

public void addAll(Collection features)

Description copied from interface: FeatureCollection

Adds multiple features to this collection. To be preferred over #add for adding multiple features, because in some systems (like the JUMP Workbench) fewer events will be fired.

Specified by:

addAll in interface FeatureCollection

removeAll

public void removeAll(Collection features)

Description copied from interface: FeatureCollection

Removes multiple features from this collection. To be preferred over #remove for removing multiple features, because in some systems (like the JUMP Workbench) fewer events will be fired.

Specified by:

removeAll in interface FeatureCollection