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package edu.stanford.nlp.util.logging;

import edu.stanford.nlp.util.logging.Redwood.RedwoodChannels;

/**
 * Indicates that a class supports "pretty logging". Pretty logging is a type of
 * pretty-printing that uses the Redwood logging system to structure itself.
 * 
 * When pretty logging the contents of your object, you should check to see if
 * each object (call it obj) is dispatchable with
 * PrettyLogger.dispatchable(obj) if you don't know their type. If
 * true, you should call channels.prettyLog(obj) to pretty log it.
 * Otherwise, use its toString() method.
 * 
 * @see PrettyLogger
 * @author David McClosky
 * 
 */
public interface PrettyLoggable {
  /**
   * Pretty logs the current object to specific Redwood channels.
   * 
   * @param channels
   *          the channels which should be logged to -- all logging calls should
   *          use logging methods on the channels (e.g. channels.log(), etc.)
   * @param description
   *          The description of the object. It will potentially identify the
   *          object's functional role or (failing that) its class. This is
   *          typically used as a track name surrounding the contents of this
   *          object.
   */
  public void prettyLog(RedwoodChannels channels, String description);
}