org.apache.catalina.startup

## Class LifecycleListenerRule

- java.lang.Object
- - org.apache.tomcat.util.digester.Rule
  - - org.apache.catalina.startup.LifecycleListenerRule

-     public class LifecycleListenerRule
      extends Rule

  Rule that creates a new `LifecycleListener` and associates it with the top object on the stack which must implement `Container`. The implementation class to be used is determined by:
  1. Does the top element on the stack specify an implementation class using the attribute specified when this rule was created?
  2. Does the parent `Container` of the `Container` on the top of the stack specify an implementation class using the attribute specified when this rule was created?
  3. Use the default implementation class specified when this rule was created.

- - ### Field Summary

    - ### Fields inherited from class org.apache.tomcat.util.digester.Rule

      `digester, namespaceURI`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `LifecycleListenerRule(String listenerClass, String attributeName)` Construct a new instance of this Rule.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `begin(String namespace, String name, Attributes attributes)` Handle the beginning of an XML element.

    - ### Methods inherited from class org.apache.tomcat.util.digester.Rule

      `begin, body, body, end, end, finish, getDigester, getNamespaceURI, setDigester, setNamespaceURI`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### LifecycleListenerRule

          public LifecycleListenerRule(String listenerClass,
                               String attributeName)

      Construct a new instance of this Rule.
      Parameters:
        `listenerClass` - Default name of the LifecycleListener implementation class to be created
        `attributeName` - Name of the attribute that optionally includes an override name of the LifecycleListener class

  - ### Method Detail

    - #### begin

          public void begin(String namespace,
                   String name,
                   Attributes attributes)
                     throws Exception

      Handle the beginning of an XML element.
      Overrides:
        `begin` in class `Rule`
      Parameters:
        `attributes` - The attributes of this element
        `namespace` - the namespace URI of the matching element, or an empty string if the parser is not namespace aware or the element has no namespace
        `name` - the local name if the parser is namespace aware, or just the element name otherwise
      Throws:
        `Exception` - if a processing error occurs

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