| /******************************************************************************* |
| * 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.ofbiz.entity.jdbc; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Proxy; |
| |
| public abstract class AbstractCursorHandler implements InvocationHandler { |
| |
| protected String cursorName; |
| protected int fetchSize; |
| |
| protected AbstractCursorHandler(String cursorName, int fetchSize) { |
| this.cursorName = cursorName; |
| this.fetchSize = fetchSize; |
| } |
| |
| public void setCursorName(String cursorName) { |
| this.cursorName = cursorName; |
| } |
| |
| public String getCursorName() { |
| return cursorName; |
| } |
| |
| public void setFetchSize(int fetchSize) { |
| this.fetchSize = fetchSize; |
| } |
| |
| public int getFetchSize() { |
| return fetchSize; |
| } |
| |
| protected Object invoke(Object obj, Object proxy, Method method, Object... args) throws Throwable { |
| if ("toString".equals(method.getName())) { |
| String str = obj.toString(); |
| return getClass().getName() + "{" + str + "}"; |
| } |
| return method.invoke(obj, args); |
| } |
| |
| protected static <T> T newHandler(InvocationHandler handler, Class<T> implClass) throws IllegalAccessException, IllegalArgumentException, InstantiationException, InvocationTargetException, NoSuchMethodException, SecurityException { |
| ClassLoader loader = implClass.getClassLoader(); |
| if (loader == null) loader = ClassLoader.getSystemClassLoader(); |
| Class<?> proxyClass = Proxy.getProxyClass(loader, implClass); |
| Constructor<?> constructor = proxyClass.getConstructor(InvocationHandler.class); |
| return implClass.cast(constructor.newInstance(handler)); |
| } |
| } |