org.apache.commons.collections.map
Class TypedMap
Decorates another
Map
to validate that elements added
are of a specific type.
The validation of additions is performed via an instanceof test against
a specified
Class
. If an object cannot be added to the
collection, an IllegalArgumentException is thrown.
Note that TypedMap is not synchronized and is not thread-safe.
If you wish to use this map from multiple threads concurrently, you must use
appropriate synchronization. The simplest approach is to wrap this map
using
Collections.synchronizedMap(Map)
. This class may throw
exceptions when accessed by concurrent threads without synchronization.
The returned implementation is Serializable from Commons Collections 3.1.
$Revision: 348007 $ $Date: 2005-11-21 22:52:57 +0000 (Mon, 21 Nov 2005) $- Stephen Colebourne
- Matthew Hawthorne
static Map | decorate(Map map, Class keyType, Class valueType) - Factory method to create a typed map.
|
TypedMap
protected TypedMap()
Restrictive constructor.
decorate
public static Map decorate(Map map,
Class keyType,
Class valueType)
Factory method to create a typed map.
If there are any elements already in the map being decorated, they
are validated.
map
- the map to decorate, must not be nullkeyType
- the type to allow as keys, must not be nullvalueType
- the type to allow as values, must not be null
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