/*
* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.beans;
import java.lang.ref.SoftReference;
import java.lang.ref.WeakReference;
import java.lang.reflect.Method;
import static sun.reflect.misc.ReflectUtil.isPackageAccessible;
final class MethodRef {
private String signature;
private SoftReference<Method> methodRef;
private WeakReference<Class<?>> typeRef;
void set(Method method) {
if (method == null) {
this.signature = null;
this.methodRef = null;
this.typeRef = null;
}
else {
this.signature = method.toGenericString();
this.methodRef = new SoftReference<>(method);
this.typeRef = new WeakReference<Class<?>>(method.getDeclaringClass());
}
}
boolean isSet() {
return this.methodRef != null;
}
Method get() {
if (this.methodRef == null) {
return null;
}
Method method = this.methodRef.get();
if (method == null) {
method = find(this.typeRef.get(), this.signature);
if (method == null) {
this.signature = null;
this.methodRef = null;
this.typeRef = null;
return null;
}
this.methodRef = new SoftReference<>(method);
}
return isPackageAccessible(method.getDeclaringClass()) ? method : null;
}
private static Method find(Class<?> type, String signature) {
if (type != null) {
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