StructuredDataLookup (Apache Log4j 2 2.12.4 API)

java.lang.Object
- org.apache.logging.log4j.core.lookup.StructuredDataLookup

All Implemented Interfaces:: StrLookup

@Plugin(name="sd",
        category="Lookup")
public class StructuredDataLookup
extends java.lang.Object
implements StrLookup

Looks up keys from StructuredDataMessage log messages.

Field Summary
- Fields inherited from interface org.apache.logging.log4j.core.lookup.StrLookup
  CATEGORY

Constructor Summary

Constructors
Constructor Description

StructuredDataLookup()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`lookup(java.lang.String key)`	Returns `null`.
`java.lang.String`	`lookup(LogEvent event, java.lang.String key)`	Looks up the value for the key using the data in the LogEvent.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StructuredDataLookup
```
public StructuredDataLookup()
```
- Method Detail
  - lookup
```
public java.lang.String lookup(java.lang.String key)
```
    Returns null. This Lookup plugin does not make sense outside the context of a LogEvent.
    
    Specified by:
    
    lookup in interface StrLookup
    
    Parameters:
    
    key - the key to be looked up, may be null
    
    Returns:
    
    null
  - lookup
```
public java.lang.String lookup(LogEvent event,
                               java.lang.String key)
```
    Looks up the value for the key using the data in the LogEvent.
    
    Specified by:
    
    lookup in interface StrLookup
    
    Parameters:
    
    event - The current LogEvent.
    
    key - the key to be looked up, may be null
    
    Returns:
    
    The value associated with the key.