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 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.
Modifier | Constructor and Description |
---|---|
protected |
TypedMap()
Restrictive constructor.
|
public static Map decorate(Map map, Class keyType, Class valueType)
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 nullIllegalArgumentException
- if list or type is nullIllegalArgumentException
- if the list contains invalid elementsCopyright © 2001–2015 The Apache Software Foundation. All rights reserved.