org.apache.cocoon.components
Class ComponentContext

java.lang.Object
  org.apache.avalon.framework.context.DefaultContext
      org.apache.cocoon.components.ComponentContext

All Implemented Interfaces:

Serializable, Context

public class ComponentContext
extends DefaultContext

This is the Context implementation for Cocoon components. It extends the DefaultContext by a special handling for getting objects from the object model and other application information.

Version:

CVS $Id: ComponentContext.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Carsten Ziegeler

See Also:

ContextHelper, Serialized Form

Nested Class Summary

static class	ComponentContext.ComponentManagerWrapper
static class	ComponentContext.ComponentSelectorWrapper

Field Summary

protected static String

OBJECT_MODEL_KEY_PREFIX

Constructor Summary

ComponentContext()
Create a Context with no parent.

ComponentContext(Context parent)
Create a Context with specified parent.

ComponentContext(Map contextData)
Create a Context with specified data.

ComponentContext(Map contextData, Context parent)
Create a Context with specified data and parent.

Method Summary

Object

get(Object key) Retrieve an item from the Context.

Methods inherited from class org.apache.avalon.framework.context.DefaultContext

checkWriteable, equals, getContextData, getParent, hashCode, hide, makeReadOnly, put

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

OBJECT_MODEL_KEY_PREFIX

protected static final String OBJECT_MODEL_KEY_PREFIX

See Also:

Constant Field Values

Constructor Detail

ComponentContext

public ComponentContext(Map contextData,
                        Context parent)

Create a Context with specified data and parent.

Parameters:

contextData - the context data

parent - the parent Context (may be null)

ComponentContext

public ComponentContext(Map contextData)

Create a Context with specified data.

Parameters:

contextData - the context data

ComponentContext

public ComponentContext(Context parent)

Create a Context with specified parent.

Parameters:

parent - the parent Context (may be null)

ComponentContext

public ComponentContext()

Create a Context with no parent.

Method Detail

get

public Object get(Object key)
           throws ContextException

Retrieve an item from the Context.

Specified by:

get in interface Context

Overrides:

get in class DefaultContext

Parameters:

key - the key of item

Returns:

the item stored in context

Throws:

ContextException - if item not present