Chain-of-responsibility pattern: Difference between revisions

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{{Short description|Programming pattern}}

In [[object-oriented design]], the '''chain-of-responsibility pattern''' is a [[Behavioral pattern|behavioral]] [[design pattern (computer science)|design pattern]] consisting of a source of [[Command pattern|command objects]] and a series of '''processing objects'''.<ref>{{Cite web |url=http://www.blackwasp.co.uk/ChainOfResponsibility.aspx |title=Chain of Responsibility Design Pattern |access-date=2013-11-08 |archive-url=https://web.archive.org/web/20180227070352/http://www.blackwasp.co.uk/ChainOfResponsibility.aspx |archive-date=2018-02-27 |url-status=dead }}</ref> Each processing object contains logic that defines the types of command objects that it can handle; the rest are passed to the next processing object in the chain. A mechanism also exists for adding new processing objects to the end of this chain.