Package 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

Constructors

Constructor	Description
SystemPropertiesLookup()

Method Summary

Modifier and Type	Method	Description
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

evaluate, lookup

Methods inherited from class java.lang.Object

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

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

evaluate

Constructor Details

SystemPropertiesLookup

public SystemPropertiesLookup()

Method Details

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.