/*
* 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.data.gen;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.geotools.feature.AttributeImpl;
import org.geotools.feature.GeometryAttributeImpl;
import org.geotools.feature.NameImpl;
import org.opengis.feature.GeometryAttribute;
import org.opengis.feature.IllegalAttributeException;
import org.opengis.feature.Property;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.GeometryDescriptor;
import org.opengis.feature.type.Name;
import org.opengis.feature.type.PropertyDescriptor;
import org.opengis.filter.identity.FeatureId;
import org.opengis.geometry.BoundingBox;
/**
* @author Christian Mueller
*
* Decorator Class for Simple Feature objects having pregeneralized geometries
*
* This feature object is read only, modifying calls result in a
* {@link UnsupportedOperationException}
*
* The special thing is that a generalized geometry is returned.
*
*
*
*
* @source $URL$
*/
public class PreGeneralizedSimpleFeature implements SimpleFeature {
SimpleFeature feature;
SimpleFeatureType featureTyp;
String geomPropertyName, backendGeomPropertyName;
Name nameBackendGeomProperty;
Map<Object, Object> userData;
int[] indexMapping;
public PreGeneralizedSimpleFeature(SimpleFeatureType featureTyp, int indexMapping[],
SimpleFeature feature, String geomPropertyName, String backendGeomPropertyName) {
this.feature = feature;
this.geomPropertyName = geomPropertyName;
this.backendGeomPropertyName = backendGeomPropertyName;
this.featureTyp = featureTyp;
this.indexMapping = indexMapping;
this.nameBackendGeomProperty = new NameImpl(backendGeomPropertyName);
}
private String getBackendAttributeName(String attrName) {
if (geomPropertyName.equals(attrName))
return backendGeomPropertyName;
else
return attrName;
}
private Name getNameBackendAttribute(Name name) {
if (geomPropertyName.equals(name.getLocalPart()))
return nameBackendGeomProperty;
else
return name;
}
private Property createProperty(String name) {
Object value = name.equals(geomPropertyName) ? feature
.getAttribute(backendGeomPropertyName) : feature.getAttribute(name);
AttributeDescriptor attrDescr = featureTyp.getDescriptor(name);
if (attrDescr == null)
return null;
if (attrDescr instanceof GeometryDescriptor)
return new GeometryAttributeImpl(value, (GeometryDescriptor) attrDescr, null);
else
return new AttributeImpl(value, attrDescr, null);
}
private UnsupportedOperationException unsupported() {
return new UnsupportedOperationException("Cannot modify a pregeneralized feature");
}
public Object getAttribute(String attrName) {
return feature.getAttribute(getBackendAttributeName(attrName));
}
public Object getAttribute(Name name) {
return feature.getAttribute(getNameBackendAttribute(name));
}
public Object getAttribute(int index) throws IndexOutOfBoundsException {
return feature.getAttribute(indexMapping[index]);
}
public int getAttributeCount() {
return feature.getAttributeCount();
}
public List<Object> getAttributes() {
return feature.getAttributes();
}
public Object getDefaultGeometry() {
return feature.getAttribute(backendGeomPropertyName);
}
public SimpleFeatureType getFeatureType() {
return featureTyp;
}
public String getID() {
return feature.getID();
}
public SimpleFeatureType getType() {
return featureTyp;
}
public void setAttribute(String arg0, Object arg1) {
throw unsupported();
}
public void setAttribute(Name arg0, Object arg1) {
throw unsupported();
}
public void setAttribute(int arg0, Object arg1) throws IndexOutOfBoundsException {
throw unsupported();
}
public void setAttributes(List<Object> arg0) {
throw unsupported();
}
public void setAttributes(Object[] arg0) {
throw unsupported();
}
public void setDefaultGeometry(Object arg0) {
throw unsupported();
}
public BoundingBox getBounds() {
return feature.getBounds();
}
public GeometryAttribute getDefaultGeometryProperty() {
Object value = feature.getAttribute(backendGeomPropertyName);
GeometryAttribute attr = new GeometryAttributeImpl(value, featureTyp
.getGeometryDescriptor(), null);
return attr;
}
public FeatureId getIdentifier() {
return feature.getIdentifier();
}
public void setDefaultGeometryProperty(GeometryAttribute arg0) {
throw unsupported();
}
public Collection<Property> getProperties() {
List<Property> result = new ArrayList<Property>();
for (PropertyDescriptor descr : featureTyp.getDescriptors()) {
result.add(createProperty(descr.getName().getLocalPart()));
}
return result;
}
public Collection<Property> getProperties(Name name) {
return getProperties(name.getLocalPart());
}
public Collection<Property> getProperties(String name) {
Property p = createProperty(name);
if (p == null)
return Collections.emptyList();
else
return Collections.singletonList(p);
}
public Property getProperty(Name name) {
return createProperty(name.getLocalPart());
}
public Property getProperty(String name) {
return createProperty(name);
}
public Collection<? extends Property> getValue() {
return getProperties();
}
public void setValue(Collection<Property> arg0) {
throw unsupported();
}
public void validate() throws IllegalAttributeException {
feature.validate();
}
public AttributeDescriptor getDescriptor() {
return null;
}
public Name getName() {
return null;
}
public Map<Object, Object> getUserData() {
if (userData == null)
userData = new HashMap<Object, Object>();
return userData;
}
public boolean isNillable() {
return false;
}
public void setValue(Object arg0) {
throw unsupported();
}
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (obj == this) {
return true;
}
if (!(obj instanceof PreGeneralizedSimpleFeature)) {
return false;
}
PreGeneralizedSimpleFeature feat = (PreGeneralizedSimpleFeature) obj;
if (feat.geomPropertyName.equals(this.geomPropertyName) == false)
return false;
if (feat.backendGeomPropertyName.equals(this.backendGeomPropertyName) == false)
return false;
if (feat.featureTyp.equals(this.featureTyp) == false)
return false;
if (feat.feature.equals(this.feature) == false)
return false;
return true;
}
public int hashCode() {
return featureTyp.hashCode() * geomPropertyName.hashCode()
* backendGeomPropertyName.hashCode() * feature.hashCode();
}
}