CSC/ECE 517 Fall 2009/wiki3 6 Factory Design Pattern - Revision history

Expertiza: /* ''Abstract factory pattern'' */

2009-11-24T02:30:12Z

''Abstract factory pattern''

← Older revision		Revision as of 02:30, 24 November 2009
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	==== ''Abstract factory pattern'' ====		==== ''Abstract factory pattern'' ====
	Abstract ~~factory is~~ the ~~place to take centralize~~ decision of ~~what~~ factory to instantiate. It provides an encapsulation to a group of factories that have common properties. The clients who implement abstract factories doesn't know which concrete object it gets from individual internal factories. The clients only implements the generic interface of these factories. To understand how this pattern is used refer to [http://en.wikipedia.org/wiki/Abstract_factory_pattern Abstract factory]. This abstraction hides the details of different implementation of objects from their general usage. Factory design pattern is used inherently in this pattern design.		Abstract factories centralize the decision of which factory to instantiate. It provides an encapsulation to a group of factories that have common properties. The clients who implement abstract factories doesn't know which concrete object it gets from individual internal factories. The clients only implements the generic interface of these factories. To understand how this pattern is used refer to [http://en.wikipedia.org/wiki/Abstract_factory_pattern Abstract factory]. This abstraction hides the details of different implementation of objects from their general usage. Factory design pattern is used inherently in this pattern design.

	====''Prototype pattern''====		====''Prototype pattern''====

Expertiza: /* ''Implementation'' */

2009-11-19T00:48:03Z

''Implementation''

← Older revision		Revision as of 00:48, 19 November 2009
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	{		{
	Product product = factoryMethod();		Product product = factoryMethod();
	}		}
	protected abstract Product factoryMethod();		protected abstract Product factoryMethod();
	}		}

Expertiza: /* ''Implementation'' */

2009-11-19T00:47:01Z

''Implementation''

← Older revision		Revision as of 00:47, 19 November 2009
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	public interface Product { … }		public interface Product { … }
	public abstract class Creator		public abstract class Creator
	{ public void anOperation()		{
	{ Product product = factoryMethod();		public void anOperation()
			{
			Product product = factoryMethod();
	}		}
	protected abstract Product factoryMethod();		protected abstract Product factoryMethod();
	}		}
	public class ConcreteProduct implements Product { … }		public class ConcreteProduct implements Product { … }
	public class ConcreteCreator extends Creator		public class ConcreteCreator extends Creator
	{ protected Product factoryMethod()		{
	{ return new ConcreteProduct();		protected Product factoryMethod()
	}		{
			return new ConcreteProduct();
			}
	}		}
	public class Client		public class Client
	{ public static void main( String arg[] )		{
	{		public static void main( String arg[] )
			{
	Creator creator = new ConcreteCreator();		Creator creator = new ConcreteCreator();
	creator.anOperation();		creator.anOperation();
	}		}
	}		}

Expertiza: /* '''''Example using Documents Application''''' */

2009-11-19T00:43:55Z