io.netty.handler.codec.serialization.CachingClassResolver Maven / Gradle / Ivy
/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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 io.netty.handler.codec.serialization;
import java.util.Map;
class CachingClassResolver implements ClassResolver {
private final Map> classCache;
private final ClassResolver delegate;
CachingClassResolver(ClassResolver delegate, Map> classCache) {
this.delegate = delegate;
this.classCache = classCache;
}
@Override
public Class resolve(String className) throws ClassNotFoundException {
// Query the cache first.
Class clazz;
clazz = classCache.get(className);
if (clazz != null) {
return clazz;
}
// And then try to load.
clazz = delegate.resolve(className);
classCache.put(className, clazz);
return clazz;
}
}