org.codehaus.plexus.context
Interface Context

All Known Implementing Classes:

DefaultContext

public interface Context

Context of the plexus container.

Method Summary

boolean	contains(Object key) Returns true if the map or the parent map contains the key.
Object	get(Object key) Returns the value of the key.
Map	getContextData() Utility method to retrieve containerContext data.
void	hide(Object key) Hides the item in the containerContext.
void	makeReadOnly() Make the containerContext read-only.
void	put(Object key, Object value) Adds the item to the containerContext.

Method Detail

get

Object get(Object key)
           throws ContextException

Returns the value of the key. If the key can't be found it will throw a exception.

Parameters:

key - The key of the value to look up.

Returns:

Returns

Throws:

ContextException - If the key doesn't exist.

getContextData

Map getContextData()

Utility method to retrieve containerContext data. the returned Map is an unmodifiable view.

Returns:

the containerContext data

Since:

1.0-alpha-18

contains

boolean contains(Object key)

Returns true if the map or the parent map contains the key.

Parameters:

key - The key to search for.

Returns:

Returns true if the key was found.

put

void put(Object key,
         Object value)
         throws IllegalStateException

Adds the item to the containerContext.

Parameters:

key - the key of the item

value - the item

Throws:

IllegalStateException - if containerContext is read only

hide

void hide(Object key)
          throws IllegalStateException

Hides the item in the containerContext. After remove(key) has been called, a get(key) will always fail, even if the parent containerContext has such a mapping.

Parameters:

key - the items key

Throws:

IllegalStateException - if containerContext is read only

makeReadOnly

void makeReadOnly()

Make the containerContext read-only. Any attempt to write to the containerContext via put() will result in an IllegalStateException.