/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.feature;
import java.util.Collection;
import java.util.Iterator;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.opengis.feature.Feature;
import org.opengis.feature.GeometryAttribute;
import org.opengis.feature.Property;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.FeatureType;
import org.opengis.feature.type.GeometryType;
import org.opengis.filter.identity.FeatureId;
import org.opengis.geometry.BoundingBox;
/**
* Temptative implementation of Feature.
* <p>
* NOTE this is work in progress and at this time not really being used throughout the library.
* </p>
* @author jdeolive
* @author jgarnett
*
*
*
* @source $URL$
*/
public class FeatureImpl extends ComplexAttributeImpl implements Feature {
/**
* Default geometry attribute
*/
GeometryAttribute defaultGeometry;
/**
* Create a Feature with the following content.
*
* @param properties Collectio of Properties (aka Attributes and/or Associations)
* @param desc Nested descriptor
* @param id Feature ID
*/
public FeatureImpl(Collection<Property> properties, AttributeDescriptor desc, FeatureId id) {
super(properties, desc, id );
}
/**
* Create a Feature with the following content.
*
* @param properties Collectio of Properties (aka Attributes and/or Associations)
* @param type Type of feature to be created
* @param id Feature ID
*/
public FeatureImpl(Collection<Property> properties, FeatureType type, FeatureId id ) {
super(properties, type, id );
}
public FeatureType getType() {
return (FeatureType) super.getType();
}
public FeatureId getIdentifier() {
return (FeatureId) this.id;
}
/**
* Get the total bounds of this feature which is calculated by doing a union
* of the bounds of each geometry this feature is associated with.
*
* @return An Envelope containing the total bounds of this Feature.
*
* @task REVISIT: what to return if there are no geometries in the feature?
* For now we'll return a null envelope, make this part of interface?
* (IanS - by OGC standards, all Feature must have geom)
*/
public BoundingBox getBounds() {
ReferencedEnvelope bounds = new ReferencedEnvelope(getType().getCoordinateReferenceSystem());
for (Iterator itr = getValue().iterator(); itr.hasNext();) {
Property property = (Property) itr.next();
if (property instanceof GeometryAttribute) {
bounds.include(((GeometryAttribute)property).getBounds());
}
}
return bounds;
}
public GeometryAttribute getDefaultGeometryProperty() {
if ( defaultGeometry != null ) {
return defaultGeometry;
}
synchronized ( this ) {
if ( defaultGeometry == null ) {
//look it up from the type
if (((FeatureType)getType()).getGeometryDescriptor() == null ) {
return null;
}
GeometryType geometryType =
(GeometryType) getType().getGeometryDescriptor().getType();
if (geometryType != null) {
for (Iterator itr = getValue().iterator(); itr.hasNext();) {
Property property = (Property) itr.next();
if (property instanceof GeometryAttribute) {
if (property.getType().equals(geometryType)) {
defaultGeometry = (GeometryAttribute)property;
break;
}
}
}
}
}
}
return defaultGeometry;
}
//TODO: REVISIT
//this implementation seems really bad to me or I am missing something:
//1- getValue() shouldn't contain the passed in attribute, but the schema should contain its descriptor
//2- this.defaultGeometry = defaultGeometry means getValue() will not contain the argument
public void setDefaultGeometryProperty(GeometryAttribute defaultGeometry) {
if (!getValue().contains(defaultGeometry)) {
throw new IllegalArgumentException("specified attribute is not one of: " + getValue());
}
synchronized (this) {
this.defaultGeometry = defaultGeometry;
}
}
}