JAL-3541 selectively merged build.gradle and gradle.properties

[jalview.git] / srcjar_unused / org / apache / log4j / varia / NullAppender.java

diff --git a/srcjar_unused/org/apache/log4j/varia/NullAppender.java b/srcjar_unused/org/apache/log4j/varia/NullAppender.java
new file mode 100644 (file)
index 0000000..778b024
--- /dev/null
+++ b/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 <code>new</code>.
+   * @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 <code>new</code>.
+     * */
+  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;
+  }
+}