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org.apache.commons.collections.bag

Class TypedSortedBag

java.lang.Object
|
+--org.apache.commons.collections.bag.TypedSortedBag


public class TypedSortedBag
extends java.lang.Object

Decorates another SortedBag 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

TypedSortedBag()

Restrictive constructor.

Method Summary

static SortedBag

decorate(SortedBag bag, Class type)

Factory method to create a typed sorted bag.

Constructor Details

TypedSortedBag

protected TypedSortedBag()

Restrictive constructor.

Method Details

decorate

public static SortedBag decorate(SortedBag bag, Class type)

Factory method to create a typed sorted bag.

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

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