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# RollingFileAppender Class Reference

Inherits RollingFileAppenderSkeleton.

List of all members.

## Detailed Description

`RollingFileAppender` extends log4cxx::FileAppender to backup the log files depending on RollingPolicy and TriggeringPolicy.

To be of any use, a `RollingFileAppender` instance must have both a `RollingPolicy` and a `TriggeringPolicy` set up. However, if its `RollingPolicy` also implements the `TriggeringPolicy` interface, then only the former needs to be set up. For example, TimeBasedRollingPolicy acts both as a `RollingPolicy` and a `TriggeringPolicy`.

`RollingFileAppender` can be configured programattically or using log4cxx::xml::DOMConfigurator. Here is a sample configration file:

    <?xml version="1.0" encoding="UTF-8" ?>
            <!DOCTYPE log4j:configuration>

            <log4j:configuration debug="true">

              <appender name="ROLL" class="org.apache.log4j.rolling.RollingFileAppender">
                <rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
                  <param name="FileNamePattern" value="/wombat/foo.d{yyyy-MM}.gz"/>
                </rollingPolicy>

                <layout class="org.apache.log4j.PatternLayout">
                  <param name="ConversionPattern" value="c{1} - mn"/>
                </layout>
              </appender>

              <root">
                <appender-ref ref="ROLL"/>
              </root>

            </log4j:configuration>

This configuration file specifies a monthly rollover schedule including automatic compression of the archived files. See TimeBasedRollingPolicy for more details.

## Public Member Functions
| RollingFileAppender ()

## Constructor & Destructor Documentation

RollingFileAppender | ( |  | ) |

The documentation for this class was generated from the following file:

- rolling/rollingfileappender.h