org.geotools.feature.collection
Class FeatureState

java.lang.Object
  org.geotools.feature.collection.FeatureState

Direct Known Subclasses:

BaseFeatureState, SubFeatureState

public abstract class FeatureState

extends java.lang.Object

This is *not* a Feature - it is a Delegate used by FeatureCollection implementations as "mix-in", provides implementation of featureCollection events, featureType, and attribute access.

To use cut&paste the following code exactly:

 
 
 
 

 

 On the bright side this means we can "fix" all the FeatureCollection implementations
 in one fell-swoop.
 




Since:
  
GeoTools 2.2
Author:
  
Jody Garnett, Refractions Reserach, Inc.










Field Summary




protected  com.vividsolutions.jts.geom.Envelope
bounds



           



protected  ResourceCollection
data



           


 



Constructor Summary




protected 
FeatureState(ResourceCollection collection)



           


 



Method Summary




abstract  void
addListener(CollectionListener listener)



          Adds a listener for collection events.



static java.util.Set
fids(java.util.Collection stuff)



          Get the set of fids for the provided collection.
 



protected  void
fireChange(java.util.Collection coll,
           int type)



           



protected abstract  void
fireChange(Feature[] features,
           int type)



          To let listeners know that something has changed.



protected  void
fireChange(Feature feature,
           int type)



           



 java.lang.Object
getAttribute(int index)



           



 java.lang.Object
getAttribute(java.lang.String xPath)



          Not really interested yet ..



 java.lang.Object[]
getAttributes(java.lang.Object[] attributes)



           



 com.vividsolutions.jts.geom.Envelope
getBounds()



          Gets the bounding box for the features in this feature collection.



abstract  FeatureType
getChildFeatureType()



           



 com.vividsolutions.jts.geom.Geometry
getDefaultGeometry()



           



abstract  FeatureType
getFeatureType()



           



abstract  java.lang.String
getId()



           



 int
getNumberOfAttributes()



           



 FeatureCollection
getParent()



           



static boolean
isFeatures(java.util.Collection stuff)



          Test if collection is all features!



abstract  void
removeListener(CollectionListener listener)



          Removes a listener for collection events.



 void
setAttribute(int position,
             java.lang.Object val)



           



 void
setAttribute(java.lang.String xPath,
             java.lang.Object attribute)



           



 void
setDefaultGeometry(com.vividsolutions.jts.geom.Geometry geometry)



           



 void
setParent(FeatureCollection parent)



           


 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 





Field Detail



bounds
protected com.vividsolutions.jts.geom.Envelope bounds







data
protected ResourceCollection data








Constructor Detail



FeatureState
protected FeatureState(ResourceCollection collection)






Method Detail



addListener
public abstract void addListener(CollectionListener listener)

Adds a listener for collection events.


Parameters:
listener - The listener to add





removeListener
public abstract void removeListener(CollectionListener listener)

Removes a listener for collection events.


Parameters:
listener - The listener to remove





fireChange
protected abstract void fireChange(Feature[] features,
                                   int type)

To let listeners know that something has changed.








fireChange
protected void fireChange(Feature feature,
                          int type)








fireChange
protected void fireChange(java.util.Collection coll,
                          int type)








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

Gets the bounding box for the features in this feature collection.



Returns:
the envelope of the geometries contained by this feature
         collection.





getFeatureType
public abstract FeatureType getFeatureType()








getChildFeatureType
public abstract FeatureType getChildFeatureType()








getId
public abstract java.lang.String getId()








getParent
public FeatureCollection getParent()








setParent
public void setParent(FeatureCollection parent)








getAttributes
public java.lang.Object[] getAttributes(java.lang.Object[] attributes)








getAttribute
public java.lang.Object getAttribute(java.lang.String xPath)

Not really interested yet ..








getAttribute
public java.lang.Object getAttribute(int index)








setAttribute
public void setAttribute(int position,
                         java.lang.Object val)
                  throws IllegalAttributeException,
                         java.lang.ArrayIndexOutOfBoundsException



Throws:
IllegalAttributeException
java.lang.ArrayIndexOutOfBoundsException





getNumberOfAttributes
public int getNumberOfAttributes()








setAttribute
public void setAttribute(java.lang.String xPath,
                         java.lang.Object attribute)
                  throws IllegalAttributeException



Throws:
IllegalAttributeException





getDefaultGeometry
public com.vividsolutions.jts.geom.Geometry getDefaultGeometry()








setDefaultGeometry
public void setDefaultGeometry(com.vividsolutions.jts.geom.Geometry geometry)
                        throws IllegalAttributeException



Throws:
IllegalAttributeException





fids
public static java.util.Set fids(java.util.Collection stuff)

Get the set of fids for the provided collection.
 

 By doing a quick pass through the collection we can  do
 comparisons based on Feature ID (rather then collection
 membership).
 
 

 A subclass that tracks its FID information may wish to override
 this method.
 








isFeatures
public static boolean isFeatures(java.util.Collection stuff)

Test if collection is all features!