CSC/ECE 517 Summer 2008/wiki3 7 SHOP PAT: Difference between revisions
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* Consumer :provide a list of items and user is allowed to choose item among them.Then the price is scanned and placed in the shopping bag. | * Consumer :provide a list of items and user is allowed to choose item among them.Then the price is scanned and placed in the shopping bag. | ||
* [http://www.answers.com/topic/shopper Shopper]: | * [http://www.answers.com/topic/shopper Shopper]: Browse through the item from the shopping list and search for the muliple provider for that particular item.Shopper may search the item on diffent basis ex: Brand name, lowest price.highest price etc. | ||
* [http://www.google.com/search?hl=en&rlz=1T4SUNA_enUS281US281&defl=en&q=define:Provider&sa=X&oi=glossary_definition&ct=title Provider]:It keeps multiple items and make it available to shopper. At the same time assist the shopper in locating the other providers. | * [http://www.google.com/search?hl=en&rlz=1T4SUNA_enUS281US281&defl=en&q=define:Provider&sa=X&oi=glossary_definition&ct=title Provider]:It keeps multiple items and make it available to shopper. At the same time assist the shopper in locating the other providers. |
Revision as of 03:29, 23 July 2008
Problem Definition
Shopper pattern. The idea of a "shopping cart" is ubiquitous in e-commerce. This idea lends itself to abstraction in the form of a Shopper pattern. Find examples and descriptions that are suitable for teaching this pattern, if possible, including some non-obvious applications. Write up your findings in the form of a narrative.
Introduction
The main purpose of Shopper Pattern is to provide as a means to assist people or consumers to obtain a collection of items from a set of shops or the providers. And the goal is achieved without introducing coupling between the consumer and the provider.
Participants
- Consumer :provide a list of items and user is allowed to choose item among them.Then the price is scanned and placed in the shopping bag.
- Shopper: Browse through the item from the shopping list and search for the muliple provider for that particular item.Shopper may search the item on diffent basis ex: Brand name, lowest price.highest price etc.
- Provider:It keeps multiple items and make it available to shopper. At the same time assist the shopper in locating the other providers.
- ItemRequest: Requested item by th eshopper is identified.
- Item:The things that are a provider owns,described by an item request,a consumer request, and a shopper obtains.
Consequences
- Shopper pattern helps in decoupling the requesting object from the object that provide the requested items.
- The responsibilities can be moved for provider objects.the requesting application will not nee dto be modified.
- The provider objects can be rearranged without modyfying the requesting application.
- Optional items can be optimized in such a way so that the processing time will be required only if th eitem is present in the list.