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Logback: the reliable, generic, fast and flexible logging framework. Copyright (C) 1999-2011, All rights reserved. This program and the accompanying materials are dual-licensed under either the terms of the Eclipse Public License v1.0 as published by the Eclipse Foundation or (per the licensee's choosing) under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation.
package ch.qos.logback.classic.pattern;
public abstract class NamedConverter extends ClassicConverter {
  Abbreviator abbreviator = null;

Gets fully qualified name from event.

event The LoggingEvent to process, cannot not be null.
name, must not be null.
  protected abstract String getFullyQualifiedName(final ILoggingEvent event);
  public void start() {
    String optStr = getFirstOption();
    if (optStr != null) {
      try {
        int targetLen = Integer.parseInt(optStr);
        if (targetLen == 0) {
           = new ClassNameOnlyAbbreviator();
        } else if (targetLen > 0) {
           = new TargetLengthBasedClassNameAbbreviator(targetLen);
      } catch (NumberFormatException nfe) {
        // FIXME: better error reporting
  public String convert(ILoggingEvent event) {
    String fqn = getFullyQualifiedName(event);
    if ( == null) {
      return fqn;
    } else {
      return .abbreviate(fqn);
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