| /* |
| * 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. |
| */ |
| |
| import org.apache.velocity.app.Velocity; |
| import org.apache.velocity.runtime.log.LogChute; |
| import org.apache.velocity.runtime.RuntimeServices; |
| |
| |
| /** |
| * This is a toy demonstration of how Velocity |
| * can use an externally configured logger. In |
| * this example, the class using Velocity |
| * implements Velocity's logger interface, and |
| * all Velocity log messages are funneled back |
| * through it. |
| * |
| * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> |
| * @version $Id$ |
| */ |
| public class LoggerExample implements LogChute |
| { |
| public LoggerExample() |
| { |
| try |
| { |
| /* |
| * this class implements the LogSystem interface, so we |
| * can use it as a logger for Velocity |
| */ |
| |
| Velocity.setProperty(Velocity.RUNTIME_LOG_LOGSYSTEM, this ); |
| Velocity.init(); |
| |
| /* |
| * that will be enough. The Velocity initialization will be |
| * output to stdout because of our |
| * logVelocityMessage() method in this class |
| */ |
| } |
| catch( Exception e ) |
| { |
| System.out.println("Exception : " + e); |
| } |
| } |
| |
| /** |
| * Required init() method for LogSystem |
| * to get access to RuntimeServices |
| */ |
| public void init( RuntimeServices rs ) |
| { |
| return; |
| } |
| |
| /** |
| * This just prints the message and level to System.out. |
| */ |
| public void log(int level, String message) |
| { |
| System.out.println("level : " + level + " msg : " + message); |
| } |
| |
| |
| /** |
| * This prints the level, message, and the Throwable's message to |
| * System.out. |
| */ |
| public void log(int level, String message, Throwable t) |
| { |
| System.out.println("level : " + level + " msg : " + message + " t : " |
| + t.getMessage()); |
| } |
| |
| /** |
| * This always returns true because logging levels can't be disabled in |
| * this impl. |
| */ |
| public boolean isLevelEnabled(int level) |
| { |
| return true; |
| } |
| |
| public static void main(String[] args) |
| { |
| LoggerExample t = new LoggerExample(); |
| } |
| } |