/apache-log4j-1.2.17/src/main/java/org/apache/log4j/pattern/LoggingEventPatternConverter.java
Java | 70 lines | 18 code | 7 blank | 45 comment | 1 complexity | 7c3a44317c1c210b45bdb2736793b6af MD5 | raw file
Possible License(s): Apache-2.0
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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;
- /**
- * LoggingEventPatternConverter is a base class for pattern converters
- * that can format information from instances of LoggingEvent.
- *
- * @author Curt Arnold
- *
- */
- public abstract class LoggingEventPatternConverter extends PatternConverter {
- /**
- * Constructs an instance of LoggingEventPatternConverter.
- * @param name name of converter.
- * @param style CSS style for output.
- */
- protected LoggingEventPatternConverter(
- final String name, final String style) {
- super(name, style);
- }
- /**
- * Formats an event into a string buffer.
- * @param event event to format, may not be null.
- * @param toAppendTo string buffer to which the formatted event will be appended. May not be null.
- */
- public abstract void format(
- final LoggingEvent event, final StringBuffer toAppendTo);
- /**
- * {@inheritDoc}
- */
- public void format(final Object obj, final StringBuffer output) {
- if (obj instanceof LoggingEvent) {
- format((LoggingEvent) obj, output);
- }
- }
- /**
- * Normally pattern converters are not meant to handle Exceptions although
- * few pattern converters might.
- *
- * By examining the return values for this method, the containing layout will
- * determine whether it handles throwables or not.
- * @return true if this PatternConverter handles throwables
- */
- public boolean handlesThrowable() {
- return false;
- }
- }