org.apache.commons.collections.map
Class TypedMap
java.lang.Object
|
+--org.apache.commons.collections.map.TypedMap
public class TypedMap
extends java.lang.Object
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.
- Commons Collections 3.0
- Stephen Colebourne
- Matthew Hawthorne
static Map | decorate(Map map, Class keyType, Class valueType) |
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 null
- keyType - the type to allow as keys, must not be null
- valueType - the type to allow as values, must not be null
- if list or type is null
- if the list contains invalid elements
Map
to validate that elements added are of a specific type. The validation of additions is performed via an instanceof test against a specifiedClass
. If an object cannot be added to the collection, an IllegalArgumentException is thrown.