CompoundFormatter

Requests the configurable object to configure itself. The "partial properties key" is a parameter of this method. It allows different pluggable logger components to configure themselves without knowing their parent. For example let's assume we have in the logger.properties file a handler named "fileH". Then for the handler itself the prefix will be the "fileH". For the formatter of this handler the prefix will be "fileH.formatter". For the filter of this handler the prefix will be "fileH.filter". And so on. Here is the simplified handler creation workflow:

• A handler is created based on the corresponding class property ("fileH.class" in our example).
• The handler's configure method is called with it's name as a prefix ("fileH" in our example).
• Inside this method the handler reads it's configuration properties and configures itself. Among other things it creates child components. For example it will read the "fileH.filter" property, which defines the filter class name and will create corresponding object.
• For each child component the handler will call it's configure method passing proper prefix. For example for the filter the prefix will be "fileH.filter".