examples/src/customLevel/XLevel.java

/*
 * Copyright 1999,2004 The Apache Software Foundation.
 * 
 * Licensed 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 customLevel;

import org.apache.log4j.Level;

/**
   This class introduces a new level level called TRACE. TRACE has
   lower level than DEBUG.

 */
public class XLevel extends Level {
  public static final int TRACE_INT = Level.DEBUG_INT - 1;
  public static final int LETHAL_INT = Level.FATAL_INT + 1;
  private static String TRACE_STR = "TRACE";
  private static String LETHAL_STR = "LETHAL";
  public static final XLevel TRACE = new XLevel(TRACE_INT, TRACE_STR, 7);
  public static final XLevel LETHAL = new XLevel(LETHAL_INT, LETHAL_STR, 0);

  protected XLevel(int level, String strLevel, int syslogEquiv) {
    super(level, strLevel, syslogEquiv);
  }

  /**
     Convert the string passed as argument to a level. If the
     conversion fails, then this method returns {@link #TRACE}.
  */
  public static Level toLevel(String sArg) {
    return (Level) toLevel(sArg, XLevel.TRACE);
  }

  public static Level toLevel(String sArg, Level defaultValue) {
    if (sArg == null) {
      return defaultValue;
    }

    String stringVal = sArg.toUpperCase();

    if (stringVal.equals(TRACE_STR)) {
      return XLevel.TRACE;
    } else if (stringVal.equals(LETHAL_STR)) {
      return XLevel.LETHAL;
    }

    return Level.toLevel(sArg, (Level) defaultValue);
  }

  public static Level toLevel(int i) throws IllegalArgumentException {
    switch (i) {
    case TRACE_INT:
      return XLevel.TRACE;

    case LETHAL_INT:
      return XLevel.LETHAL;
    }

    return Level.toLevel(i);
  }
}