Package org.geotools.util.logging
Class LoggerFactory<L>
Object
LoggerFactory<L>
- Direct Known Subclasses:
CommonsLoggerFactory
,DefaultLoggerFactory
,Log4J2LoggerFactory
,Log4JLoggerFactory
,LogbackLoggerFactory
A factory for Java
Logger
wrapping an other logging framework. This factory is used only when wanting to log
to an other framework than Java logging. The getLogger(java.lang.String)
method returns some subclass of Logger
(typicallly LoggerAdapter
) that forward directly all log methods to an other framework.- Since:
- 2.4
- Author:
- Martin Desruisseaux
- See Also:
-
Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
LoggerFactory
(Class<L> loggerClass) Creates a new factory. -
Method Summary
Modifier and TypeMethodDescriptionprotected abstract L
getImplementation
(String name) Returns the implementation to use for the logger of the specified name.Returns the base class of objects to be returned bygetImplementation(java.lang.String)
.Returns the logger of the specified name, ornull
.Look up configuration information, ornull
unknown.protected abstract L
Returns the implementation wrapped by the specified logger, ornull
if none.protected abstract Logger
Wraps the specified implementation in a Java logger.
-
Constructor Details
-
LoggerFactory
Creates a new factory.- Parameters:
loggerClass
- The class of the wrapped logger.
-
-
Method Details
-
getLogger
Returns the logger of the specified name, ornull
. If this method has already been invoked previously with the samename
argument, then it may returns the same logger provided that:- the logger has not yet been garbage collected;
- the implementation instance (Log4J, SLF4J, etc.) returned by
getImplementation(name)
has not changed.
Logger
instance, ornull
if the standard Java logging framework should be used.- Parameters:
name
- The name of the logger.- Returns:
- The logger, or
null
.
-
getImplementationClass
Returns the base class of objects to be returned bygetImplementation(java.lang.String)
. The class depends on the underlying logging framework (Log4J, SLF4J, etc.). -
getImplementation
Returns the implementation to use for the logger of the specified name. The object to be returned depends on the logging framework (Log4J, SLF4J, etc.). If the target framework redirects logging events to Java logging, then this method should returnsnull
since we should not use wrapper at all.- Parameters:
name
- The name of the logger.- Returns:
- The logger as an object of the target logging framework (Log4J, SLF4J, etc.), or
null
if the target framework would redirect to the Java logging framework.
-
wrap
Wraps the specified implementation in a Java logger.- Parameters:
name
- The name of the logger.implementation
- An implementation returned bygetImplementation(java.lang.String)
.- Returns:
- A new logger wrapping the specified implementation.
-
unwrap
Returns the implementation wrapped by the specified logger, ornull
if none. If the specified logger is not an instance of the expected class, then this method should returnsnull
.- Parameters:
logger
- The logger to test.- Returns:
- The implementation wrapped by the specified logger, or
null
if none.
-
lookupConfiguration
Look up configuration information, ornull
unknown.Report back details on how logging configuration is setup. Ideally including configuration filename along with any system properties used.
- Returns:
- configuration information, or
null
unknown.
-