Class SLF4JLogFactory

java.lang.Object
org.apache.commons.logging.LogFactory
org.apache.commons.logging.impl.SLF4JLogFactory

public class SLF4JLogFactory extends LogFactory

Concrete subclass of LogFactory which always delegates to the org.slf4j.LoggerFactory class.

This factory generates instances of SLF4JLog. It will remember previously created instances for the same name, and will return them on repeated requests to the getInstance() method.

This implementation ignores any configured attributes.

Author:
Rod Waldhoff, Craig R. McClanahan, Richard A. Sitze, Ceki Gülcü
  • Field Details

  • Constructor Details

    • SLF4JLogFactory

      public SLF4JLogFactory()
      Public no-arguments constructor required by the lookup mechanism.
  • Method Details

    • getAttribute

      public Object getAttribute(String name)
      Return the configuration attribute with the specified name (if any), or null if there is no such attribute.
      Specified by:
      getAttribute in class LogFactory
      Parameters:
      name - Name of the attribute to return
      Returns:
      configuration attribute
    • getAttributeNames

      Return an array containing the names of all currently defined configuration attributes. If there are no such attributes, a zero length array is returned.
      Specified by:
      getAttributeNames in class LogFactory
      Returns:
      names of all currently defined configuration attributes
    • getInstance

      public Log getInstance(Class clazz) throws LogConfigurationException
      Convenience method to derive a name from the specified class and call getInstance(String) with it.
      Specified by:
      getInstance in class LogFactory
      Parameters:
      clazz - Class for which a suitable Log name will be derived
      Throws:
      LogConfigurationException - if a suitable Log instance cannot be returned
    • getInstance

      Construct (if necessary) and return a Log instance, using the factory's current set of configuration attributes.

      Specified by:
      getInstance in class LogFactory
      Parameters:
      name - Logical name of the Log instance to be returned (the meaning of this name is only known to the underlying logging implementation that is being wrapped)
      Throws:
      LogConfigurationException - if a suitable Log instance cannot be returned
    • release

      public void release()
      Release any internal references to previously created Loginstances returned by this factory. This is useful in environments like servlet containers, which implement application reloading by throwing away a ClassLoader. Dangling references to objects in that class loader would prevent garbage collection.
      Specified by:
      release in class LogFactory
    • removeAttribute

      public void removeAttribute(String name)
      Remove any configuration attribute associated with the specified name. If there is no such attribute, no action is taken.
      Specified by:
      removeAttribute in class LogFactory
      Parameters:
      name - Name of the attribute to remove
    • setAttribute

      public void setAttribute(String name, Object value)
      Set the configuration attribute with the specified name. Calling this with a null value is equivalent to calling removeAttribute(name).
      Specified by:
      setAttribute in class LogFactory
      Parameters:
      name - Name of the attribute to set
      value - Value of the attribute to set, or null to remove any setting for this attribute