/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.geoserver.wfs.xml;
import net.opengis.wfs.PropertyType;
import org.eclipse.xsd.XSDElementDeclaration;
import org.eclipse.xsd.XSDFacet;
import org.eclipse.xsd.XSDFactory;
import org.eclipse.xsd.XSDParticle;
import org.eclipse.xsd.XSDTypeDefinition;
import org.geotools.xml.PropertyExtractor;
import org.geotools.xml.SchemaIndex;
import org.geotools.xml.Schemas;
import org.opengis.feature.type.Name;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import javax.xml.namespace.QName;
/**
* Extracts properties from an instance of {@link PropertyType}.
* <p>
* In a sense this class retypes {@link PropertyType#getValue()} to a new xml
* type so that the encoder can encode it properly.
* </p>
* @author Justin Deoliveira, The Open Planning Project, jdeolive@openplans.org
*
*/
public class PropertyTypePropertyExtractor implements PropertyExtractor {
/**
* index for looking up xml types
*/
SchemaIndex index;
public PropertyTypePropertyExtractor(SchemaIndex index) {
this.index = index;
}
public boolean canHandle(Object object) {
return object instanceof PropertyType;
}
public List properties(Object object, XSDElementDeclaration element) {
PropertyType property = (PropertyType) object;
List properties = new ArrayList(2);
//the Name particle we can use as is
properties.add(new Object[] {
Schemas.getChildElementParticle(element.getType(), "Name", false),
property.getName()
});
//the Value particle we must retype
//first guess its type
QName newTypeName = guessValueType(property.getValue());
XSDTypeDefinition type = (newTypeName != null) ? index.getTypeDefinition(newTypeName) : null;
if (type != null) {
//create a new particle based on the new type
XSDElementDeclaration value = XSDFactory.eINSTANCE.createXSDElementDeclaration();
value.setName("Value");
value.setTypeDefinition(type);
XSDParticle particle = XSDFactory.eINSTANCE.createXSDParticle();
particle.setMinOccurs(1);
particle.setMaxOccurs(1);
particle.setContent(value);
properties.add(new Object[] { particle, property.getValue() });
} else {
//coudl not determine new type, just fall back to xs:anyType
Object[] p = new Object[] {
Schemas.getChildElementParticle(element.getType(), "Value", false),
property.getValue()
};
properties.add(p);
}
return properties;
}
private QName guessValueType(Object value) {
Class clazz = value.getClass();
List profiles = Arrays.asList(new Object[] { new XSProfile(), new GML3Profile() });
for (Iterator it = profiles.iterator(); it.hasNext();) {
TypeMappingProfile profile = (TypeMappingProfile) it.next();
Name name = profile.name(clazz);
if (name != null) {
return new QName(name.getNamespaceURI(), name.getLocalPart());
}
}
return null;
}
}