org.apache.logging.log4j.core.lookup
Class SystemPropertiesLookup

java.lang.Object
  org.apache.logging.log4j.core.lookup.AbstractLookup
      org.apache.logging.log4j.core.lookup.SystemPropertiesLookup

All Implemented Interfaces:

StrLookup

@Plugin(name="sys",
        category="Lookup")
public class SystemPropertiesLookup
extends AbstractLookup

Looks up keys from system properties.

Field Summary

Fields inherited from interface org.apache.logging.log4j.core.lookup.StrLookup

CATEGORY

Constructor Summary

SystemPropertiesLookup()

Method Summary

String

lookup(LogEvent event, String key) Looks up the value for the key using the data in the LogEvent.

Methods inherited from class org.apache.logging.log4j.core.lookup.AbstractLookup

lookup

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SystemPropertiesLookup

public SystemPropertiesLookup()

Method Detail

lookup

public String lookup(LogEvent event,
                     String key)

Looks up the value for the key using the data in the LogEvent.

Parameters:

event - The current LogEvent.

key - the key to be looked up, may be null

Returns:

The value associated with the key.