org.deegree_impl.model.feature
Class FeatureCollection_Impl

java.lang.Object
  org.deegree_impl.model.feature.Feature_Impl
      org.deegree_impl.model.feature.FeatureCollection_Impl

All Implemented Interfaces:

Feature, FeatureCollection, java.io.Serializable

class FeatureCollection_Impl

extends Feature_Impl

implements FeatureCollection, java.io.Serializable

This interface provides services for the management of groups of features. These groups can come into being for a number of reasons: e.g. a project as a whole, for the scope of a query, as the result of a query or arbitrarily selected by a user for some common manipulation. A feature's membership of a particular FeatureCollection does not necessarily imply any relationship with other member features. Composite or compound features which own constituent member Features (e.g. an Airport composed of Terminals, Runways, Aprons, Hangars, etc) may also support the FeatureCollection interface to provide a generic means for clients to access constituent members without needing to be aware of the internal implementation details of the compound feature.

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Version:

$Revision: 1.12 $ $Date: 2004/03/04 07:36:01 $

Author:

Andreas Poth

Field Summary

private java.util.List	collection
private GM_Envelope	envelope
private FeatureType	ft

Fields inherited from class org.deegree_impl.model.feature.Feature_Impl

featureType, geoProps, id, properties, propRef

Constructor Summary

(package private)	FeatureCollection_Impl(java.lang.String id, Feature[] feature) constructor for initializing a featur collection with an id and an array of features.
(package private)	FeatureCollection_Impl(java.lang.String id, FeatureType featureType, FeatureProperty[] properties, int initialCapacity)
(package private)	FeatureCollection_Impl(java.lang.String id, int initialCapacity) constructor for initializing a featur collection with an id and a initial capacity.

Method Summary

void	appendFeature(Feature feature) Appends a feature to the collection.
void	appendFeatures(Feature[] features) adds a list of features to the collection
void	appendFeatures(FeatureCollection fc) adds a list of features to the collection
Feature[]	getAllFeatures() returns an array of all features
GM_Envelope	getEnvelope() returns the envelope / boundingbox of the feature collection
Feature	getFeature(int index) returns the feature that is assigned to the submitted index.
Feature	getFeatureById(java.lang.String id) returns the feature that is assigned to the submitted id.
FeatureType	getFeatureType() returns the FeatureType of this Feature(Collection)
int	getSize() returns the number of features within the collection
Feature	removeFeature(Feature feature) removes the submitted feature from the collection
Feature	removeFeature(int index) removes a feature identified by its index (row) from the the feature collection.
Feature	removeFeatureById(java.lang.String id) removes the feature that is assigned to the submitted id.
java.lang.String	toString()

Methods inherited from class org.deegree_impl.model.feature.Feature_Impl

getDefaultGeometryProperty, getGeometryProperties, getId, getProperties, getProperty, getProperty, setProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.model.feature.Feature

getDefaultGeometryProperty, getGeometryProperties, getId, getProperties, getProperty, getProperty, setProperty

Field Detail

collection

private java.util.List collection

ft

private FeatureType ft

envelope

private GM_Envelope envelope

Constructor Detail

FeatureCollection_Impl

FeatureCollection_Impl(java.lang.String id,
                       FeatureType featureType,
                       FeatureProperty[] properties,
                       int initialCapacity)

FeatureCollection_Impl

FeatureCollection_Impl(java.lang.String id,
                       int initialCapacity)

constructor for initializing a featur collection with an id and a initial capacity.

FeatureCollection_Impl

FeatureCollection_Impl(java.lang.String id,
                       Feature[] feature)

constructor for initializing a featur collection with an id and an array of features.

Method Detail

getFeatureType

public FeatureType getFeatureType()

returns the FeatureType of this Feature(Collection)

Specified by:

getFeatureType in interface Feature

Overrides:

getFeatureType in class Feature_Impl

getAllFeatures

public Feature[] getAllFeatures()

returns an array of all features

Specified by:

getAllFeatures in interface FeatureCollection

getFeature

public Feature getFeature(int index)

returns the feature that is assigned to the submitted index. If the submitted value for index is smaller 0 and larger then the number features within the featurecollection-1 an exeption will be thrown.

Specified by:

getFeature in interface FeatureCollection

getFeatureById

public Feature getFeatureById(java.lang.String id)

returns the feature that is assigned to the submitted id. If no valid feature could be found an Object[] with zero length will be returned.

Specified by:

getFeatureById in interface FeatureCollection

removeFeature

public Feature removeFeature(int index)

removes a feature identified by its index (row) from the the feature collection. The removed feature will be returned. If the submitted value for index is smaller 0 and larger then the number features within the featurecollection-1 an exeption will be thrown.

Specified by:

removeFeature in interface FeatureCollection

removeFeature

public Feature removeFeature(Feature feature)

removes the submitted feature from the collection

Specified by:

removeFeature in interface FeatureCollection

removeFeatureById

public Feature removeFeatureById(java.lang.String id)

removes the feature that is assigned to the submitted id. The removed feature will be returned. If no valid feature could be found null will be returned

Specified by:

removeFeatureById in interface FeatureCollection

appendFeature

public void appendFeature(Feature feature)

Appends a feature to the collection. If the submitted feature doesn't matches the feature type defined for all features within the collection an exception will be thrown.

Specified by:

appendFeature in interface FeatureCollection

appendFeatures

public void appendFeatures(Feature[] features)

Description copied from interface: FeatureCollection

adds a list of features to the collection

Specified by:

appendFeatures in interface FeatureCollection

appendFeatures

public void appendFeatures(FeatureCollection fc)

Description copied from interface: FeatureCollection

adds a list of features to the collection

Specified by:

appendFeatures in interface FeatureCollection

getSize

public int getSize()

returns the number of features within the collection

Specified by:

getSize in interface FeatureCollection

getEnvelope

public GM_Envelope getEnvelope()

returns the envelope / boundingbox of the feature collection

Specified by:

getEnvelope in interface Feature

Overrides:

getEnvelope in class Feature_Impl

toString

public java.lang.String toString()

Overrides:

toString in class Feature_Impl