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java.lang.Objectorg.apache.commons.collections.map.TypedMap
public 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.
| Constructor Summary | |
|---|---|
protected |
TypedMap()
Restrictive constructor. |
| Method Summary | |
|---|---|
static java.util.Map |
decorate(java.util.Map map,
java.lang.Class keyType,
java.lang.Class valueType)
Factory method to create a typed map. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
protected TypedMap()
| Method Detail |
|---|
public static java.util.Map decorate(java.util.Map map,
java.lang.Class keyType,
java.lang.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 null
java.lang.IllegalArgumentException - if list or type is null
java.lang.IllegalArgumentException - if the list contains invalid elements
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