org.apache.commons.collections.map
public class TypedMap extends Object
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 java.util.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.
Since: Commons Collections 3.0
Version: $Revision: 348007 $ $Date: 2005-11-21 22:52:57 +0000 (Mon, 21 Nov 2005) $
Constructor Summary | |
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protected | TypedMap()
Restrictive constructor. |
Method Summary | |
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static Map | decorate(Map map, Class keyType, Class valueType)
Factory method to create a typed map.
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If there are any elements already in the map being decorated, they are validated.
Parameters: map the map to decorate, must not be null keyType the type to allow as keys, must not be null valueType the type to allow as values, must not be null
Throws: IllegalArgumentException if list or type is null IllegalArgumentException if the list contains invalid elements