JdkProxySource.java
- /*
- * 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 org.apache.commons.pool2.proxy;
- import java.lang.reflect.Proxy;
- import java.util.Arrays;
- import org.apache.commons.pool2.UsageTracking;
- /**
- * Provides proxy objects using Java reflection.
- *
- * @param <T> type of the pooled object to be proxied
- * @since 2.0
- */
- public class JdkProxySource<T> implements ProxySource<T> {
- private final ClassLoader classLoader;
- private final Class<?>[] interfaces;
- /**
- * Constructs a new proxy source for the given interfaces.
- *
- * @param classLoader The class loader with which to create the proxy
- * @param interfaces The interfaces to proxy
- */
- public JdkProxySource(final ClassLoader classLoader, final Class<?>[] interfaces) {
- this.classLoader = classLoader;
- // Defensive copy
- this.interfaces = Arrays.copyOf(interfaces, interfaces.length);
- }
- @SuppressWarnings("unchecked") // Cast to T on return.
- @Override
- public T createProxy(final T pooledObject, final UsageTracking<T> usageTracking) {
- return (T) Proxy.newProxyInstance(classLoader, interfaces,
- new JdkProxyHandler<>(pooledObject, usageTracking));
- }
- @SuppressWarnings("unchecked")
- @Override
- public T resolveProxy(final T proxy) {
- return ((JdkProxyHandler<T>) Proxy.getInvocationHandler(proxy)).disableProxy();
- }
- /**
- * @since 2.4.3
- */
- @Override
- public String toString() {
- final StringBuilder builder = new StringBuilder();
- builder.append("JdkProxySource [classLoader=");
- builder.append(classLoader);
- builder.append(", interfaces=");
- builder.append(Arrays.toString(interfaces));
- builder.append("]");
- return builder.toString();
- }
- }