SourceResolver (Apache Log4j 2 2.17.1 API)

java.lang.Object
- org.apache.logging.log4j.layout.template.json.resolver.SourceResolver

All Implemented Interfaces:

EventResolver, TemplateResolver<LogEvent>
```
public final class SourceResolver
extends Object
implements EventResolver
```
Resolver for the StackTraceElement returned by LogEvent.getSource().
Note that this resolver is toggled by locationInfoEnabled layout configuration, which is by default populated from log4j.layout.jsonTemplate.locationInfoEnabled system property.
Configuration
```
 config = "field" -> (
            "className"  |
            "fileName"   |
            "methodName" |
            "lineNumber" )
 
```
Examples
Resolve the line number:
```
 {
   "$resolver": "source",
   "field": "lineNumber"
 }
 
```

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isResolvable()`	Indicates if the resolver if applicable at all.
`boolean`	`isResolvable(LogEvent logEvent)`	Indicates if the resolver if applicable for the given `value`.
`void`	`resolve(LogEvent logEvent, JsonWriter jsonWriter)`	Resolves the given `value` using the provided `JsonWriter`.

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.layout.template.json.resolver.TemplateResolver
isFlattening, resolve

- Method Detail
  - isResolvable
```
public boolean isResolvable()
```
    Description copied from interface: TemplateResolver
    
    Indicates if the resolver if applicable at all.
    For instance, the source line resolver can be short-circuited using this check if the location information is disabled in the layout configuration.
    
    Specified by:
    
    isResolvable in interface TemplateResolver<LogEvent>
  - isResolvable
```
public boolean isResolvable(LogEvent logEvent)
```
    Description copied from interface: TemplateResolver
    
    Indicates if the resolver if applicable for the given value.
    For instance, the stack trace resolver can be short-circuited using this check if the stack traces are disabled in the layout configuration.
    
    Specified by:
    
    isResolvable in interface TemplateResolver<LogEvent>
  - resolve
```
public void resolve(LogEvent logEvent,
                    JsonWriter jsonWriter)
```
    Description copied from interface: TemplateResolver
    
    Resolves the given value using the provided JsonWriter.
    
    Specified by:
    
    resolve in interface TemplateResolver<LogEvent>