/*
* 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.xml.impl;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.xsd.XSDElementDeclaration;
import org.geotools.xml.Binding;
import org.geotools.xml.ComplexBinding;
/**
* Gets properties from a parent object by visiting bindings in the hierachy.
* The object properties are stored as name, object tuples.
*
* @author Justin Deoliveira, The Open Planning Project
*
*
*
*
* @source $URL$
*/
public class GetPropertiesExecutor implements BindingWalker.Visitor {
/** the parent object */
Object parent;
/** the parent element */
XSDElementDeclaration element;
/** the properties */
List properties;
public GetPropertiesExecutor(Object parent, XSDElementDeclaration element) {
this.parent = parent;
this.element = element;
properties = new ArrayList();
}
public List getProperties() {
return properties;
}
public void visit(Binding binding) {
if (binding instanceof ComplexBinding) {
ComplexBinding complex = (ComplexBinding) binding;
try {
List properties = complex.getProperties(parent);
if ( properties == null || properties.isEmpty() ) {
properties = complex.getProperties(parent, element);
}
if (properties != null) {
this.properties.addAll(properties);
}
} catch (Exception e) {
String msg = "Failed to get properties. Binding for " + complex.getTarget();
throw new RuntimeException(msg, e);
}
}
}
}