X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=unused%2Fsrcjar_unused%2Forg%2Fapache%2Flog4j%2Fspi%2FRootLogger.java;fp=unused%2Fsrcjar_unused%2Forg%2Fapache%2Flog4j%2Fspi%2FRootLogger.java;h=a9ffd7422891f2b8e70db31c1c911d8ec716cf01;hb=7e01e1b3e9c8abdf952e085dba51e9266f12b1ee;hp=0000000000000000000000000000000000000000;hpb=88635c3965bb2f1f45e53c2d5f66fed19b93012a;p=jalview.git diff --git a/unused/srcjar_unused/org/apache/log4j/spi/RootLogger.java b/unused/srcjar_unused/org/apache/log4j/spi/RootLogger.java new file mode 100644 index 0000000..a9ffd74 --- /dev/null +++ b/unused/srcjar_unused/org/apache/log4j/spi/RootLogger.java @@ -0,0 +1,71 @@ +/* + * 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.spi; + +import org.apache.log4j.Level; +import org.apache.log4j.Logger; +import org.apache.log4j.helpers.LogLog; + + +// Contibutors: Mathias Bogaert + +/** + RootLogger sits at the top of the logger hierachy. It is a + regular logger except that it provides several guarantees. + +
First, it cannot be assigned a null
+ level. Second, since root logger cannot have a parent, the
+ {@link #getChainedLevel} method always returns the value of the
+ level field without walking the hierarchy.
+
+ @author Ceki Gülcü
+
+ */
+public final class RootLogger extends Logger {
+ /**
+ The root logger names itself as "root". However, the root
+ logger cannot be retrieved by name.
+ */
+ public RootLogger(Level level) {
+ super("root");
+ setLevel(level);
+ }
+
+ /**
+ Return the assigned level value without walking the logger
+ hierarchy.
+ */
+ public final Level getChainedLevel() {
+ return level;
+ }
+
+ /**
+ Setting a null value to the level of the root logger may have catastrophic
+ results. We prevent this here.
+
+ @since 0.8.3 */
+ public final void setLevel(Level level) {
+ if (level == null) {
+ LogLog.error(
+ "You have tried to set a null level to root.", new Throwable());
+ } else {
+ this.level = level;
+ }
+ }
+
+}