| org.jacorb.notification.util.WildcardMap
All known Subclasses: org.jacorb.notification.util.WeakCacheWildcardMap, org.jacorb.notification.util.DefaultWildcardMap, org.jacorb.notification.util.CachingWildcardMap,
| WildcardMap | | public interface WildcardMap (Code) | | An Object that maps String Keys to Values.
A WildcardMap cannot contain duplicate keys.
Each Key has exactly one Entry associated. A Key can contain the Wildcard Character '*' which
matches zero or more characters. The WildcardMap supports two semantics of accessing
the entries. The first way is to ignore the special meaning of the Wildcard character and to just
return the entries as they were inserted.
This way you could put some entries in a WildcardMap and fetch them again using the Operation
WildcardMap.getNoExpansion(Object) getNoExpansion() :
WildcardMap wc = new WildcardMap();
wc.put("abc", new Integer(1));
wc.put("a*", new Integer(2));
wc.getNoExpansion("abc") => 1
wc.getNoExpansion("a*") => 2
wc.getNoExpansion("xyz") => null
This behaviour is similiar to a
java.util.Map Map .
The other way using the WildcardMap is to use the Operation
WildcardMap.getWithExpansion(Object)getWithExpansion() . This Operations matches the requested Key to all contained Keys. If the Key
of an Entry contains the Wildcard Character '*' it is matched as expected by the semantic of '*'.
The Operations returns an array of all matching entries:
wc.getWithExpansion("abc") => [1,2]
wc.getWithExpansion("a") => [2]
wc.getWithExpansion("abcd") => [2]
wc.getWithExpansion("xyz") => []
author:
Alphonse Bendt
version:
$Id: WildcardMap.java,v 1.16 2005/08/21 13:38:40 alphonse.bendt Exp $ |
| clear | | void clear()(Code) | | clear this map
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| getNoExpansion | | Object getNoExpansion(Object key)(Code) | | Returns the value to which this map maps the specified key. Returns null if the map contains
no mapping for this key.
Parameters:
key - key whose associated value is to be returned the value to which this map maps the specified key, or null if the map contains nomapping for this key. |
| getWithExpansion | | Object[] getWithExpansion(Object key)(Code) | | Returns the value to which this map maps the specified key. Additionaly return all Values
which keys contain a Wildcard and match the requested key. Returns null if the map contains
no mapping for this key.
Parameters:
key - key whose associated value is to be returned an Array of all Matching entries or null if no matching entry could be found. |
| put | | Object put(Object key, Object value)(Code) | | The operation put associates the specified value with the specified key in
this map. The String representation of the Key
java.lang.Object.toString toString() is used. If the map previously contained a mapping for this key, the old value is replaced by
the specified value.
Parameters:
key - key with which String representation the specified value is to be associated.
Parameters:
value - value to be associated with the specified key. previous value associated with specified key, or null if there was no mapping forkey. |
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