| /* |
| * 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 org.apache.log4j.pattern; |
| |
| import org.apache.log4j.spi.LoggingEvent; |
| |
| /** |
| * Return the event's NDC in a StringBuffer. |
| * |
| * @author Ceki Gülcü |
| */ |
| public class NDCPatternConverter extends PatternConverter { |
| // We assume that each PatternConveter instance is unique within a layout, |
| // which is unique within an appender. We further assume that callas to the |
| // appender method are serialized (per appender). |
| StringBuffer buf; |
| |
| public NDCPatternConverter() { |
| super(); |
| this.buf = new StringBuffer(32); |
| } |
| |
| public StringBuffer convert(LoggingEvent event) { |
| buf.setLength(0); |
| buf.append(event.getNDC()); |
| |
| return buf; |
| } |
| |
| public String getName() { |
| return "NDC"; |
| } |
| |
| public String getStyleClass(LoggingEvent e) { |
| return "ndc"; |
| } |
| |
| } |