org.apache.turbine.modules
Class ActionLoader

java.lang.Object
  |
  +--java.util.Dictionary
        |
        +--java.util.Hashtable
              |
              +--org.apache.turbine.modules.GenericLoader
                    |
                    +--org.apache.turbine.modules.ActionLoader
All Implemented Interfaces:
java.lang.Cloneable, java.util.Map, java.io.Serializable

public class ActionLoader
extends GenericLoader

The purpose of this class is to allow one to load and execute Action modules.

Version:
$Id: ActionLoader.java,v 1.1.1.1 2001/08/16 05:08:29 jvanzyl Exp $
Author:
Dave Bryson
See Also:
Serialized Form

Inner classes inherited from class java.util.Map
java.util.Map.Entry
 
Field Summary
private static ActionLoader instance
          The single instance of this class.
 
Fields inherited from class org.apache.turbine.modules.GenericLoader
CACHE, reload, TURBINE_PACKAGE
 
Fields inherited from class java.util.Hashtable
count, emptyEnumerator, emptyIterator, ENTRIES, entrySet, KEYS, keySet, loadFactor, modCount, serialVersionUID, table, threshold, values, VALUES
 
Constructor Summary
private ActionLoader()
          These ctor's are private to force clients to use getInstance() to access this class.
private ActionLoader(int i)
          These ctor's are private to force clients to use getInstance() to access this class.
 
Method Summary
private  void addInstance(java.lang.String name, Action action)
          Adds an instance of an object into the hashtable.
 void exec(RunData data, java.lang.String name)
          Attempts to load and execute the external action.
static ActionLoader getInstance()
          The method through which this class is accessed.
 Action getInstance(java.lang.String name)
          Pulls out an instance of the object by name.
 
Methods inherited from class org.apache.turbine.modules.GenericLoader
cache, getBasePackage, reload, setReload
 
Methods inherited from class java.util.Hashtable
, clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, get, getEnumeration, getIterator, hashCode, isEmpty, keys, keySet, put, putAll, readObject, rehash, remove, size, toString, values, writeObject
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, registerNatives, wait, wait, wait
 

Field Detail

instance

private static ActionLoader instance
The single instance of this class.
Constructor Detail

ActionLoader

private ActionLoader()
These ctor's are private to force clients to use getInstance() to access this class.

ActionLoader

private ActionLoader(int i)
These ctor's are private to force clients to use getInstance() to access this class.
Method Detail

addInstance

private void addInstance(java.lang.String name,
                         Action action)
Adds an instance of an object into the hashtable.
Parameters:
name - Name of object.
action - Action to be associated with name.

exec

public void exec(RunData data,
                 java.lang.String name)
          throws java.lang.Exception
Attempts to load and execute the external action.
Overrides:
exec in class GenericLoader
Parameters:
data - Turbine information.
name - Name of object that will execute the action.
Throws:
java.lang.Exception - a generic exception.

getInstance

public Action getInstance(java.lang.String name)
                   throws java.lang.Exception
Pulls out an instance of the object by name. Name is just the single name of the object.
Parameters:
name - Name of object instance.
Returns:
An Action with the specified name, or null.
Throws:
java.lang.Exception - a generic exception.

getInstance

public static ActionLoader getInstance()
The method through which this class is accessed.
Returns:
The single instance of this class.


Copyright © 2000-2002 Apache Software Foundation. All Rights Reserved.