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org.apache.commons.collections.set

Class TypedSet

java.lang.Object
|
+--org.apache.commons.collections.set.TypedSet


public class TypedSet
extends java.lang.Object

Decorates another Set 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.

Since:
Commons Collections 3.0
Authors:
Stephen Colebourne
Matthew Hawthorne

Constructor Summary

TypedSet()

Restrictive constructor.

Method Summary

static Set

decorate(Set set, Class type)

Factory method to create a typed set.

Constructor Details

TypedSet

protected TypedSet()

Restrictive constructor.

Method Details

decorate

public static Set decorate(Set set, Class type)

Factory method to create a typed set.

If there are any elements already in the set being decorated, they are validated.

Parameters:
set - the set to decorate, must not be null
type - the type to allow into the collection, must not be null
Throws:
- if set or type is null
- if the set contains invalid elements