freemarker.ext.beans.JRebelClassChangeNotifier Maven / Gradle / Ivy
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Liferay Portal Template FreeMarker
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 freemarker.ext.beans;
import java.lang.ref.WeakReference;
import org.zeroturnaround.javarebel.ClassEventListener;
import org.zeroturnaround.javarebel.ReloaderFactory;
class JRebelClassChangeNotifier implements ClassChangeNotifier {
static void testAvailability() {
ReloaderFactory.getInstance();
}
@Override
public void subscribe(ClassIntrospector classIntrospector) {
ReloaderFactory.getInstance().addClassReloadListener(
new ClassIntrospectorCacheInvalidator(classIntrospector));
}
private static class ClassIntrospectorCacheInvalidator
implements ClassEventListener {
private final WeakReference ref;
ClassIntrospectorCacheInvalidator(ClassIntrospector w) {
ref = new WeakReference(w);
}
@Override
public void onClassEvent(int eventType, Class pClass) {
ClassIntrospector ci = (ClassIntrospector) ref.get();
if (ci == null) {
ReloaderFactory.getInstance().removeClassReloadListener(this);
} else if (eventType == ClassEventListener.EVENT_RELOADED) {
ci.remove(pClass);
}
}
}
}
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