org.jboss.weld.bean.proxy.ClassHierarchyComparator Maven / Gradle / Ivy
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* Copyright 2011, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual 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.jboss.weld.bean.proxy;
import java.io.Serializable;
import java.util.Comparator;
/**
* Class hierarchy comparator.
*
* @author Ales Justin
*/
class ClassHierarchyComparator implements Comparator>, Serializable {
private static final long serialVersionUID = -8437779965946194053L;
static final ClassHierarchyComparator INSTANCE = new ClassHierarchyComparator();
public int compare(Class c1, Class c2) {
if (c1.equals(c2)) {
return 0;
}
if (c1.isAssignableFrom(c2)) {
return 1;
}
if (c2.isAssignableFrom(c1)) {
return -1;
}
return 0;
}
}