001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.core.pattern; 015 016abstract public class CompositeConverter<E> extends DynamicConverter<E> { 017 018 Converter<E> childConverter; 019 020 public String convert(E event) { 021 StringBuilder buf = new StringBuilder(); 022 023 for (Converter<E> c = childConverter; c != null; c = c.next) { 024 c.write(buf, event); 025 } 026 String intermediary = buf.toString(); 027 return transform(event, intermediary); 028 } 029 030 abstract protected String transform(E event, String in); 031 032 public Converter<E> getChildConverter() { 033 return childConverter; 034 } 035 036 public void setChildConverter(Converter<E> child) { 037 childConverter = child; 038 } 039 040 public String toString() { 041 StringBuilder buf = new StringBuilder(); 042 buf.append("CompositeConverter<"); 043 044 if (formattingInfo != null) 045 buf.append(formattingInfo); 046 047 if (childConverter != null) { 048 buf.append(", children: ").append(childConverter); 049 } 050 buf.append(">"); 051 return buf.toString(); 052 } 053}