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

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

diff --git a/srcjar_unused/org/apache/log4j/varia/LevelRangeFilter.java b/srcjar_unused/org/apache/log4j/varia/LevelRangeFilter.java
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+++ b/srcjar_unused/org/apache/log4j/varia/LevelRangeFilter.java
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+/*
+ * 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.Level;
+import org.apache.log4j.spi.Filter;
+import org.apache.log4j.spi.LoggingEvent;
+
+/**
+   This is a very simple filter based on level matching, which can be
+   used to reject messages with priorities outside a certain range.
+   
+   <p>The filter admits three options <b>LevelMin</b>, <b>LevelMax</b>
+   and <b>AcceptOnMatch</b>.
+
+   <p>If the level of the {@link LoggingEvent} is not between Min and Max
+   (inclusive), then {@link Filter#DENY} is returned.
+   
+   <p> If the Logging event level is within the specified range, then if
+   <b>AcceptOnMatch</b> is true, {@link Filter#ACCEPT} is returned, and if
+   <b>AcceptOnMatch</b> is false, {@link Filter#NEUTRAL} is returned.
+   
+   <p>If <code>LevelMin</code>w is not defined, then there is no
+   minimum acceptable level (ie a level is never rejected for
+   being too "low"/unimportant).  If <code>LevelMax</code> is not
+   defined, then there is no maximum acceptable level (ie a
+   level is never rejected for beeing too "high"/important).
+
+   <p>Refer to the {@link
+   org.apache.log4j.AppenderSkeleton#setThreshold setThreshold} method
+   available to <code>all</code> appenders extending {@link
+   org.apache.log4j.AppenderSkeleton} for a more convenient way to
+   filter out events by level.
+
+   @author Simon Kitching
+   @author based on code by Ceki G&uuml;lc&uuml; 
+*/
+public class LevelRangeFilter extends Filter {
+
+  /**
+     Do we return ACCEPT when a match occurs. Default is
+     <code>false</code>, so that later filters get run by default  */
+  boolean acceptOnMatch = false;
+
+  Level levelMin;
+  Level levelMax;
+
+ 
+  /**
+     Return the decision of this filter.
+   */
+  public
+  int decide(LoggingEvent event) {
+    if(this.levelMin != null) {
+      if (event.getLevel().isGreaterOrEqual(levelMin) == false) {
+        // level of event is less than minimum
+        return Filter.DENY;
+      }
+    }
+
+    if(this.levelMax != null) {
+      if (event.getLevel().toInt() > levelMax.toInt()) {
+        // level of event is greater than maximum
+        // Alas, there is no Level.isGreater method. and using
+        // a combo of isGreaterOrEqual && !Equal seems worse than
+        // checking the int values of the level objects..
+        return Filter.DENY;
+      }
+    }
+
+    if (acceptOnMatch) {
+      // this filter set up to bypass later filters and always return
+      // accept if level in range
+      return Filter.ACCEPT;
+    }
+    else {
+      // event is ok for this filter; allow later filters to have a look..
+      return Filter.NEUTRAL;
+    }
+  }
+
+ /**
+     Get the value of the <code>LevelMax</code> option.  */
+  public
+  Level getLevelMax() {
+    return levelMax;
+  }
+
+
+  /**
+     Get the value of the <code>LevelMin</code> option.  */
+  public
+  Level getLevelMin() {
+    return levelMin;
+  }
+
+  /**
+     Get the value of the <code>AcceptOnMatch</code> option.
+   */
+  public
+  boolean getAcceptOnMatch() {
+    return acceptOnMatch;
+  }
+
+  /**
+     Set the <code>LevelMax</code> option.
+   */
+  public
+  void setLevelMax(Level levelMax) {
+    this.levelMax =  levelMax;
+  }
+
+  /**
+     Set the <code>LevelMin</code> option.
+   */
+  public
+  void setLevelMin(Level levelMin) {
+    this.levelMin =  levelMin;
+  }
+
+  /**
+     Set the <code>AcceptOnMatch</code> option.
+   */  
+  public 
+  void setAcceptOnMatch(boolean acceptOnMatch) {
+    this.acceptOnMatch = acceptOnMatch;
+  }
+}
+