org.springsource.loaded.ri.GetFieldLookup Maven / Gradle / Ivy
/*
* Copyright 2010-2012 VMware and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springsource.loaded.ri;
import java.lang.reflect.Field;
import java.util.List;
import org.springsource.loaded.ReloadableType;
/**
* Implementation of FieldLookup algorithm for "Class.getField".
*
* @author Kris De Volder
* @since 0.5.0
*/
public class GetFieldLookup extends FieldLookup {
public static Field lookup(ReloadableType rtype, String name) {
FieldRef ref = lookup(FieldProvider.create(rtype), name);
if (ref == null) {
return null;
}
return ref.getField();
}
private static FieldRef lookup(FieldProvider provider, String name) {
List fields = provider.getFields();
for (FieldRef f : fields) {
if (f.isPublic()) {
if (f.getName().equals(name)) {
return f;
}
}
}
// Didn't find in this type. Check interfaces.
FieldProvider[] itfs = provider.getInterfaces();
for (FieldProvider itf : itfs) {
FieldRef f = lookup(itf, name);
if (f != null) {
return f;
}
}
// Still didn't find... Check superclass but only if we are not an interface
if (!provider.isInterface()) {
FieldProvider supr = provider.getSuper();
if (supr != null) {
FieldRef f = lookup(supr, name);
if (f != null) {
return f;
}
}
}
//Not found
return null;
}
}