The version of Apache log4j used by SoundHelix.

[[ 🗃 ^aEp6o apache-log4j ]] :: [📥 Inbox] [📤 Outbox] [🐤 Followers] [🤝 Collaborators] [🛠 Commits]

Clone

HTTPS: git clone https://vervis.peers.community/repos/aEp6o

SSH: git clone USERNAME@vervis.peers.community:aEp6o

Branches

Tags

1.3alpha-7 :: src / xdocs /

codes.xml

<?xml version="1.0" encoding="iso-8859-1"?>

<document>

  <properties>
    <author email="not@disclosed">Ceki G�lc�</author>
    <title>Log4j error codes</title>
  </properties>

  <body>

    <center>
      <h2>Log4j error messages and their meanings</h2>
      <h3>Ceki  G&#252;lc&#252; <br/>
      November 2004, last updated on December 17th, 2004</h3>
    </center>
    
    <message ref="log4j_dtd">
      <title>The 'log4j.dtd' is no longer used nor needed.</title>
      
      <explanation>
        <p>Given syntactical flexiblilty that
        <code>JoranConfigrator</code> supports, it is no longer
        possible to express this syntatical range with a DTD. Thus,
        new log4j configuration files in XML should follow the general
        template.
        </p>

        <p class="red big">Good:</p>

        <pre>&lt;?xml version="1.0" encoding="UTF-8" ?>
<b>&lt;!DOCTYPE configuration></b>

&lt;configuration xmlns='http://logging.apache.org/'>
  ...
&lt;/configuration>
        </pre>

        <p>However, <code>JoranConfigurator</code> will continue to
        parse your old XML configuration files which previously
        required a reference to <code>log4j.dtd</code>. Thus, altough
        deprecated, the following form will continue to be parsed
        correctly.
        </p>

        <p class="red big">Deprecated:</p>

          <pre>&lt;?xml version="1.0" encoding="UTF-8" ?>
<b>&lt;!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"></b>

&lt;log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
  ...
&lt;/log4j:configuration>
        </pre>
     

        <p>Using this deprecated form will generate the above mentioned
        error message along with an error from the XML parser.
        </p>

      </explanation>
    </message>


    <message ref="tbr_fnp_not_set">

      <title>The <b>FileNamePattern</b> option must be set before
             using <code>TimeBasedRollingPolicy</code> or
             <code>FixedWindowRollingPolicy</code>.
      </title>

      <explanation>
        <p>The <b>FileNamePattern</b> option for both
        <code>TimeBasedRollingPolicy</code> and
        <code>FixedWindowRollingPolicy</code> is mandatory.
        </p>
      </explanation>

    </message>

  <message ref="appender_order">
      <title>Could not find an appender named [XYZ]. Did you define it below in the config file?</title>

      <explanation>
        <p>Whereas the order of declatation of appenders did not
        matter in log4j 1.2, in log4j version 1.3 and later, any
        appender referenced at a given point must have been already
        declared above that point. In practice though, only
        configuration files declaring an <code>AsyncAppender</code>
        may be affected by this change and only if the appenders
        embeded in th <code>AsyncAppender</code> are declared below it
        instead of being declared above it.
        </p>

        <p>For example, the following config file will no longer work.</p>

        <p class="red big">Bad:</p>

        <pre class="source">&lt;?xml version="1.0" encoding="UTF-8" ?>
&lt;!DOCTYPE log4j:configuration>

&lt;log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>

  &lt;appender name="<b class="red">ASYNC</b>" class="org.apache.log4j.AsyncAppender">
    &lt;appender-ref ref="FILE" />
  &lt;/appender>

   &lt;appender name="<b>FILE</b>" class="org.apache.log4j.FileAppender">
    &lt;param name="File" value="myapp.log"/>
    ...
  &lt;/appender>

  &lt;root>
    &lt;level value ="debug" />
    &lt;appender-ref ref="ASYNC" />
  &lt;/root>

&lt;/log4j:configuration>
        </pre>

        <p>It should be changed to the following form.</p>

        <p class="red big">Good:</p>

        <pre class="source">&lt;?xml version="1.0" encoding="UTF-8" ?>
&lt;!DOCTYPE configuration>

&lt;configuration xmlns='http://logging.apache.org/'>

   &lt;appender name="<b class="red">FILE</b>" class="org.apache.log4j.FileAppender">
     &lt;param name="File" value="myapp.log"/>
      ...
   &lt;/appender>

  &lt;appender name="<b>ASYNC</b>" class="org.apache.log4j.AsyncAppender">
    &lt;appender-ref ref="FILE" />
  &lt;/appender>

  &lt;root>
    &lt;level value ="debug" />
    &lt;appender-ref ref="ASYNC" />
  &lt;/root>
&lt;/configuration>
        </pre>


      </explanation>

    </message>
  </body>
</document>
[See repo JSON]