content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   * Copyright (C) 2016-2020 the AndroidAnnotations project
   *
   * Licensed 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.androidannotations.annotations;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  import android.util.Log;
  
  /**
   * <p>
   * This annotation is intended to be used on methods to log at runtime the
   * execution time.
   * </p>
   * <p>
   * Since <i>AndroidAnnotations 3.1</i> log messages contain the method parameter
   * and return values.
   * </p>
   * <p>
   * All annotation values are optional :
   * </p>
   * <ul>
   * <li><i>tag</i>: the tag used for the log message. (default: enclosing class
   * name)</li>
   * <li><i>level</i>: the log level used for the log message. (default :
   * LOG.INFO).</li>
   * </ul>
   *
   * <blockquote>
   * 
   * Example :
   * 
   * <pre>
   * &#064;Trace
   * void doWork() {
   * 	// ... Do Work ...
   * }
   * 
   * &#064;Trace
   * boolean doMoreWork(String someString) {
   * 	// ... Do more Work ...
   * }
   * </pre>
   * 
   * This will log these lines :
   * 
   * <pre>
   * I/TracedMethodActivity(  302): Entering [void doWork() ]
   * I/TracedMethodActivity(  302): Exiting [void doWork() ], duration in ms: 1002
   * I/TracedMethodActivity(  302): Entering [boolean doMoreWork(someString = Hello World)]
   * I/TracedMethodActivity(  302): Exiting [boolean doMoreWork(String) returning: true], duration in ms: 651
   * </pre>
   * 
   * </blockquote>
   */
  @Retention(RetentionPolicy.CLASS)
  @Target(ElementType.METHOD)
  public @interface Trace {
  
  	/**
  	 * The string indicating that no tag was given for the log message.
  	 */
  	String DEFAULT_TAG = "NO_TAG";
  
  	/**
  	 * The tag used for the log message.
  	 * 
  	 * @return the tag of the message
  	 */
  	String tag() default DEFAULT_TAG;
  
  	/**
  	 * The log level used for the log message.
  	 * 
  	 * @return the logging level of the message
  	 */
  	int level() default Log.INFO;
  
  }
  