Package org.apache.logging.log4j.core.lookup

Class JavaLookup

java.lang.Object

org.apache.logging.log4j.core.lookup.AbstractLookup

org.apache.logging.log4j.core.lookup.JavaLookup

All Implemented Interfaces:

StrLookup

@Plugin(name="java",
        category="Lookup")
public class JavaLookup
extends AbstractLookup

Looks up keys related to Java: Java version, JRE version, VM version, and so on.

Field Summary

Fields

Modifier and Type	Field	Description
private SystemPropertiesLookup	spLookup

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

CATEGORY

Constructor Summary

Constructors

Constructor	Description
JavaLookup()

Method Summary

Modifier and Type	Method	Description
java.lang.String	getHardware()	Accessible through the Lookup key hw.
java.lang.String	getLocale()	Accessible through the Lookup key locale.
java.lang.String	getOperatingSystem()	Accessible through the Lookup key os.
java.lang.String	getRuntime()	Accessible through the Lookup key runtime.
private java.lang.String	getSystemProperty(java.lang.String name)
private java.lang.String	getSystemProperty(java.lang.String prefix, java.lang.String name)
java.lang.String	getVirtualMachine()	Accessible through the Lookup key vm.
java.lang.String	lookup(LogEvent event, java.lang.String key)	Looks up the value of the environment variable.

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

Field Detail

spLookup

private final SystemPropertiesLookup spLookup

Constructor Detail

JavaLookup

public JavaLookup()

Method Detail

getHardware

public java.lang.String getHardware()

Accessible through the Lookup key hw.

Returns:

hardware processor information.

getLocale

public java.lang.String getLocale()

Accessible through the Lookup key locale.

Returns:

system locale and file encoding information.

getOperatingSystem

public java.lang.String getOperatingSystem()

Accessible through the Lookup key os.

Returns:

operating system information.

getRuntime

public java.lang.String getRuntime()

Accessible through the Lookup key runtime.

Returns:

Java Runtime Environment information.

getSystemProperty

private java.lang.String getSystemProperty(java.lang.String name)

getSystemProperty

private java.lang.String getSystemProperty(java.lang.String prefix,
                                           java.lang.String name)

getVirtualMachine

public java.lang.String getVirtualMachine()

Accessible through the Lookup key vm.

Returns:

Java Virtual Machine information.

lookup

public java.lang.String lookup(LogEvent event,
                               java.lang.String key)

Looks up the value of the environment variable.

Parameters:

event - The current LogEvent (is ignored by this StrLookup).

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

Returns:

The value of the environment variable.