| /* |
| * 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.tomcat.dbcp.pool2.impl; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * CallStack strategy using no-op implementations of all functionality. Can be used by default when abandoned object |
| * logging is disabled. |
| * |
| * @since 2.5 |
| */ |
| public class NoOpCallStack implements CallStack { |
| |
| /** |
| * Singleton instance. |
| */ |
| public static final CallStack INSTANCE = new NoOpCallStack(); |
| |
| private NoOpCallStack() { |
| } |
| |
| @Override |
| public boolean printStackTrace(final PrintWriter writer) { |
| return false; |
| } |
| |
| @Override |
| public void fillInStackTrace() { |
| // no-op |
| } |
| |
| @Override |
| public void clear() { |
| // no-op |
| } |
| } |