1   package org.slf4j.helpers;
2   
3   import java.io.ObjectStreamException;
4   import java.io.Serializable;
5   
6   import org.slf4j.Logger;
7   import org.slf4j.LoggerFactory;
8   
9   /**
10   * Serves as base class for named logger implementation. More significantly, this
11   * class establishes deserialization behavior. See @see #readResolve. 
12   * 
13   * @author Ceki Gulcu
14   * @since 1.5.3
15   */
16  abstract class NamedLoggerBase implements Logger, Serializable {
17  
18    protected String name;
19    
20    public String getName() {
21      return name;
22    }
23    
24    /**
25     * Replace this instance with a homonymous (same name) logger returned 
26     * by LoggerFactory. Note that this method is only called during 
27     * deserialization.
28     * 
29     * <p>
30     * This approach will work well if the desired ILoggerFactory is the one
31     * references by LoggerFactory. However, if the user manages its logger hierarchy
32     * through a different (non-static) mechanism, e.g. dependency injection, then
33     * this approach would be mostly counterproductive.
34     * 
35     * @return logger with same name as returned by LoggerFactory
36     * @throws ObjectStreamException
37     */
38    protected Object readResolve() throws ObjectStreamException {
39      // using getName() instead of this.name works even for
40      // NOPLogger
41      return LoggerFactory.getLogger(getName());
42    }
43  
44  }