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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.log4j.rewrite</a></div> |
| <h2 title="Class MapRewritePolicy" class="title">Class MapRewritePolicy</h2> |
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| <pre>public class <span class="typeNameLabel">MapRewritePolicy</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> |
| implements <a href="RewritePolicy.html" title="interface in org.apache.log4j.rewrite">RewritePolicy</a></pre> |
| <div class="block">This policy rewrites events where the message of the |
| original event implementes java.util.Map. |
| All other events are passed through unmodified. |
| If the map contains a "message" entry, the value will be |
| used as the message for the rewritten event. The rewritten |
| event will have a property set that is the combination of the |
| original property set and the other members of the message map. |
| If both the original property set and the message map |
| contain the same entry, the value from the message map |
| will overwrite the original property set. |
| <p> |
| The combination of the RewriteAppender and this policy |
| performs the same actions as the MapFilter from log4j 1.3.</div> |
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| <td class="colFirst"><code>org.apache.log4j.spi.LoggingEvent</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rewrite(org.apache.log4j.spi.LoggingEvent)">rewrite</a></span>​(org.apache.log4j.spi.LoggingEvent source)</code></th> |
| <td class="colLast"> |
| <div class="block">Rewrite a logging event.</div> |
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| <pre>public MapRewritePolicy()</pre> |
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| <h4>rewrite</h4> |
| <pre class="methodSignature">public org.apache.log4j.spi.LoggingEvent rewrite​(org.apache.log4j.spi.LoggingEvent source)</pre> |
| <div class="block">Rewrite a logging event.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RewritePolicy.html#rewrite(org.apache.log4j.spi.LoggingEvent)">rewrite</a></code> in interface <code><a href="RewritePolicy.html" title="interface in org.apache.log4j.rewrite">RewritePolicy</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>source</code> - a logging event that may be returned or |
| used to create a new logging event.</dd> |
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| <dd>a logging event or null to suppress processing.</dd> |
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