org.deegree.graphics
Interface FeatureLayer

All Superinterfaces:

Layer

All Known Implementing Classes:

FeatureLayer_Impl

public interface FeatureLayer

extends Layer

A Layer is a collection of Features building a thematic 'unit' waterways or country borders for example. Features can be added or removed from the layer. A Feature can e changed by a modul of the application using the layer because only references to Features are stored within a layer.

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Version:

$Revision: 1.3 $ $Date: 2004/02/09 07:57:01 $

Author:

Andreas Poth

Method Summary

void	addFeature(Feature feature) adds a feature to the layer
void	addFeatureCollection(FeatureCollection featureCollection) adds a feature collection to the layer
Feature[]	getAllFeatures() returns all features
Feature	getFeature(int index) returns the feature that matches the submitted id
Feature	getFeatureById(java.lang.String id) returns the feature that matches the submitted id
Feature[]	getFeaturesById(java.lang.String[] id) returns all features that matches the submitted ids
int	getSize() returns the amount of features within the layer.
void	removeFeature(Feature feature) removes a display Element from the layer
void	removeFeature(int id) removes the display Element from the layer that matches the submitted id

Methods inherited from interface org.deegree.graphics.Layer

addEventController, getBoundingBox, getCoordinatesSystem, getName, removeEventController, setCoordinatesSystem

Method Detail

getFeatureById

public Feature getFeatureById(java.lang.String id)

returns the feature that matches the submitted id

getFeaturesById

public Feature[] getFeaturesById(java.lang.String[] id)

returns all features that matches the submitted ids

getFeature

public Feature getFeature(int index)

returns the feature that matches the submitted id

getAllFeatures

public Feature[] getAllFeatures()

returns all features

addFeature

public void addFeature(Feature feature)
                throws java.lang.Exception

adds a feature to the layer

Throws:

java.lang.Exception

addFeatureCollection

public void addFeatureCollection(FeatureCollection featureCollection)
                          throws java.lang.Exception

adds a feature collection to the layer

Throws:

java.lang.Exception

removeFeature

public void removeFeature(Feature feature)
                   throws java.lang.Exception

removes a display Element from the layer

Throws:

java.lang.Exception

removeFeature

public void removeFeature(int id)
                   throws java.lang.Exception

removes the display Element from the layer that matches the submitted id

Throws:

java.lang.Exception

getSize

public int getSize()

returns the amount of features within the layer.