org.apache.commons.collections.buffer

Class TypedBuffer

public class TypedBuffer extends Object

Decorates another Buffer 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

Version: $Revision: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $

Author: Stephen Colebourne Matthew Hawthorne

Constructor Summary
protected TypedBuffer()
Restrictive constructor.
Method Summary
static Bufferdecorate(Buffer buffer, Class type)
Factory method to create a typed list.

Constructor Detail

TypedBuffer

protected TypedBuffer()
Restrictive constructor.

Method Detail

decorate

public static Buffer decorate(Buffer buffer, Class type)
Factory method to create a typed list.

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

Parameters: buffer the buffer to decorate, must not be null type the type to allow into the buffer, must not be null

Returns: a new typed Buffer

Throws: IllegalArgumentException if buffer or type is null IllegalArgumentException if the buffer contains invalid elements

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