net.bytebuddy.matcher.ClassLoaderParentMatcher Maven / Gradle / Ivy
/*
* Copyright 2014 - Present Rafael Winterhalter
*
* 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 net.bytebuddy.matcher;
import net.bytebuddy.build.HashCodeAndEqualsPlugin;
import net.bytebuddy.utility.nullability.MaybeNull;
/**
* An element matcher that matches a class loader for being a parent of the given class loader.
*
* @param The exact type of the class loader that is matched.
*/
@HashCodeAndEqualsPlugin.Enhance
public class ClassLoaderParentMatcher extends ElementMatcher.Junction.AbstractBase {
/**
* The class loader that is matched for being a child of the matched class loader.
*/
@MaybeNull
@HashCodeAndEqualsPlugin.ValueHandling(HashCodeAndEqualsPlugin.ValueHandling.Sort.REVERSE_NULLABILITY)
private final ClassLoader classLoader;
/**
* Creates a class loader parent element matcher.
*
* @param classLoader The class loader that is matched for being a child of the matched class loader.
*/
public ClassLoaderParentMatcher(@MaybeNull ClassLoader classLoader) {
this.classLoader = classLoader;
}
/**
* {@inheritDoc}
*/
public boolean matches(@MaybeNull T target) {
ClassLoader current = classLoader;
while (current != null) {
if (current == target) {
return true;
}
current = current.getParent();
}
return target == null;
}
@Override
public String toString() {
return "isParentOf(" + classLoader + ')';
}
}