X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=unused%2Fsrcjar_unused%2Forg%2Fapache%2Flog4j%2Fvaria%2FNullAppender.java;fp=unused%2Fsrcjar_unused%2Forg%2Fapache%2Flog4j%2Fvaria%2FNullAppender.java;h=778b0241486533e7a3cbc283942b5a0d28289196;hb=7e01e1b3e9c8abdf952e085dba51e9266f12b1ee;hp=0000000000000000000000000000000000000000;hpb=88635c3965bb2f1f45e53c2d5f66fed19b93012a;p=jalview.git diff --git a/unused/srcjar_unused/org/apache/log4j/varia/NullAppender.java b/unused/srcjar_unused/org/apache/log4j/varia/NullAppender.java new file mode 100644 index 0000000..778b024 --- /dev/null +++ b/unused/srcjar_unused/org/apache/log4j/varia/NullAppender.java @@ -0,0 +1,79 @@ +/* + * 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.log4j.varia; + +import org.apache.log4j.AppenderSkeleton; +import org.apache.log4j.spi.LoggingEvent; + +/** + * A NullAppender merely exists, it never outputs a message to any + * device. + * @author Ceki Gülc¨ + */ +public class NullAppender extends AppenderSkeleton { + + private static NullAppender instance = new NullAppender(); + + public NullAppender() { + } + + /** + * There are no options to acticate. + * */ + public void activateOptions() { + } + + /** + * Whenever you can, use this method to retreive an instance instead + * of instantiating a new one with new. + * @deprecated Use getNullAppender instead. getInstance should have been static. + * */ + public NullAppender getInstance() { + return instance; + } + + /** + * Whenever you can, use this method to retreive an instance instead + * of instantiating a new one with new. + * */ + public static NullAppender getNullAppender() { + return instance; + } + + public void close() { + } + + /** + * Does not do anything. + * */ + public void doAppend(LoggingEvent event) { + } + + /** + * Does not do anything. + * */ + protected void append(LoggingEvent event) { + } + + /** + * NullAppenders do not need a layout. + * */ + public boolean requiresLayout() { + return false; + } +}