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/*
* Copyright (C) 2013-2017 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.extern.log4j;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Causes lombok to generate a logger field.
* <p>
* Complete documentation is found at <a href="https://projectlombok.org/features/Log">the project lombok features page for lombok log annotations</a>.
* <p>
* Example:
* <pre>
* @Log4j2
* public class LogExample {
* }
* </pre>
*
* will generate:
*
* <pre>
* public class LogExample {
* private static final org.apache.logging.log4j.Logger log = org.apache.logging.log4j.LogManager.getLogger(LogExample.class);
* }
* </pre>
*
* This annotation is valid for classes and enumerations.<br>
*
* @see <a href="https://logging.apache.org/log4j/2.x/log4j-api/apidocs/org/apache/logging/log4j/Logger.html">org.apache.logging.log4j.Logger</a>
* @see <a href="https://logging.apache.org/log4j/2.x/log4j-api/apidocs/org/apache/logging/log4j/LogManager.html#getLogger-java.lang.Class-">org.apache.logging.log4j.LogManager#getLogger(java.lang.Class)</a>
* @see lombok.extern.log4j.Log4j @Log4j
* @see lombok.extern.apachecommons.CommonsLog @CommonsLog
* @see lombok.extern.java.Log @Log
* @see lombok.extern.slf4j.Slf4j @Slf4j
* @see lombok.extern.slf4j.XSlf4j @XSlf4j
* @see lombok.extern.jbosslog.JBossLog @JBossLog
* @see lombok.extern.flogger.Flogger @Flogger
*/
@Retention(RetentionPolicy.SOURCE)
@Target(ElementType.TYPE)
public @interface Log4j2 {
/** @return The category of the constructed Logger. By default, it will use the type where the annotation is placed. */
String topic() default "";
}
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