/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2011, 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.Map;
import org.eclipse.xsd.XSDElementDeclaration;
import org.geotools.data.complex.config.NonFeatureTypeProxy;
import org.geotools.xs.XSSchema;
import org.opengis.feature.type.AttributeType;
import org.opengis.feature.type.ComplexType;
import org.opengis.feature.type.GeometryType;
import org.opengis.feature.type.Name;
import org.opengis.feature.type.PropertyDescriptor;
import org.opengis.feature.type.PropertyType;
/**
* This is a set of utility methods used when <b>implementing</b> types.
* <p>
* This set of classes captures the all important how does it work questions, particularly with
* respect to super types.
* </p>
*
* @author Jody Garnett (Refractions Research)
* @author Justin Deoliveira (The Open Planning Project)
*
*
*
*
* @source $URL$
* http://svn.osgeo.org/geotools/trunk/modules/unsupported/app-schema/app-schema/src/main
* /java/org/geotools/feature/Types.java $
*/
public class Types extends org.geotools.feature.type.Types {
/**
* Return true if an attribute from a type is an element.
*
* @param type The type to search in.
* @param att The attribute name.
* @return True if the attribute exists in the type and is an element.
*/
public static boolean isElement(ComplexType type, Name att) {
PropertyDescriptor descriptor = Types.descriptor(type, att);
if (descriptor == null) {
return false;
}
Map<Object, Object> userData = descriptor.getUserData();
if (userData.isEmpty()) {
return false;
}
return userData.get(XSDElementDeclaration.class) != null;
}
/**
* Return true if the type is either a simple type or has a simple type as its supertype. In
* particular, complex types with simple content will return true.
*
* @param type
* @return
*/
public static boolean isSimpleContentType(PropertyType type) {
if (type == XSSchema.ANYSIMPLETYPE_TYPE) {
// should never happen as this type is abstract
throw new RuntimeException("Unexpected simple type");
}
PropertyType superType = type.getSuper();
if (superType == XSSchema.ANYSIMPLETYPE_TYPE) {
return true;
} else if (superType == null) {
return false;
} else {
return isSimpleContentType(superType);
}
}
public static boolean isGeometryType(AttributeType type) {
if (type instanceof GeometryType) {
return true;
}
if (type instanceof NonFeatureTypeProxy) {
if (((NonFeatureTypeProxy) type).getSubject() instanceof GeometryType) {
return true;
}
}
return false;
}
}