net.bytebuddy.matcher.ClassLoaderHierarchyMatcher 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 all {@link java.lang.ClassLoader}s in the matched class loaders hierarchy
* against a given matcher.
*
* @param The exact type of the class loader that is matched.
*/
@HashCodeAndEqualsPlugin.Enhance
public class ClassLoaderHierarchyMatcher extends ElementMatcher.Junction.AbstractBase {
/**
* The matcher to apply on each class loader in the hierarchy.
*/
private final ElementMatcher matcher;
/**
* Creates a new class loader hierarchy matcher.
*
* @param matcher The matcher to apply on each class loader in the hierarchy.
*/
public ClassLoaderHierarchyMatcher(ElementMatcher matcher) {
this.matcher = matcher;
}
/**
* {@inheritDoc}
*/
public boolean matches(@MaybeNull T target) {
ClassLoader current = target;
while (current != null) {
if (matcher.matches(current)) {
return true;
}
current = current.getParent();
}
return matcher.matches(null);
}
@Override
public String toString() {
return "hasChild(" + matcher + ')';
}
}