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<HTML><HEAD> <TITLE>Pattern Catalog</TITLE><SCRIPT>function setFocus() { if ((navigator.appName != "Netscape") && (parseFloat(navigator.appVersion) == 2)) { return; } else { self.focus(); }}</SCRIPT></HEAD><BODY BGCOLOR=#FFFFFF TEXT=#000000onLoad="setFocus()";><A NAME="top"></A><A NAME="creational"></A><H2><A HREF="#structural"><IMG SRC="gifsb/down3.gif" BORDER=0 ALT="next: Structural Patterns"></A><A HREF="chap3fs.htm" TARGET="_mainDisplayFrame">Creational Patterns</A></H2><DL><A NAME="absfact"></A><DT><B><A HREF="pat3afs.htm" TARGET="_mainDisplayFrame">Abstract Factory (87)</A></B><DD>Provide an interface for creating families of related or dependentobjects without specifying their concrete classes.<DT><B><A HREF="pat3bfs.htm" TARGET="_mainDisplayFrame">Builder (97)</A></B><DD>Separate the construction of a complex object from its representationso that the same construction process can create differentrepresentations.<A NAME="cat-factory"></A><DT><B><A HREF="pat3cfs.htm" TARGET="_mainDisplayFrame">Factory Method (107)</A></B><DD>Define an interface for creating an object, but let subclasses decidewhich class to instantiate. Factory Method lets a class deferinstantiation to subclasses.<A NAME="cat-proto"></A><DT><B><A HREF="pat3dfs.htm" TARGET="_mainDisplayFrame">Prototype (117)</A></B><DD>Specify the kinds of objects to create using a prototypicalinstance, and create new objects by copying this prototype.<A NAME="cat-single"></A><DT><B><A HREF="pat3efs.htm" TARGET="_mainDisplayFrame">Singleton (127)</A></B><DD>Ensure a class only has one instance, and provide a global pointof access to it.<BR><BR><A NAME="disc3"></A><DT><B><A HREF="disc3fs.htm" TARGET="_mainDisplayFrame">Discussionof Creational Patterns</A></B></DL><A NAME="structural"></A><H2><A HREF="#behavioral"><IMG SRC="gifsb/down3.gif" BORDER=0 ALT="next: Behavioral Patterns"></A><A HREF="chap4fs.htm" TARGET="_mainDisplayFrame">Structural Patterns</A></H2><DL><A NAME="adapter"></A><DT><B><A HREF="pat4afs.htm" TARGET="_mainDisplayFrame">Adapter (139)</A></B><DD>Convert the interface of a class into another interface clientsexpect. Adapter lets classes work together that couldn't otherwisebecause of incompatible interfaces.<DT><B><A HREF="pat4bfs.htm" TARGET="_mainDisplayFrame">Bridge (151)</A></B><DD>Decouple an abstraction from its implementation so that the twocan vary independently.<DT><B><A HREF="pat4cfs.htm" TARGET="_mainDisplayFrame">Composite (163)</A></B><DD>Compose objects into tree structures to represent part-wholehierarchies. Composite lets clients treat individual objects andcompositions of objects uniformly.<A NAME="cat-dec"></A><DT><B><A HREF="pat4dfs.htm" TARGET="_mainDisplayFrame">Decorator (175)</A></B><DD>Attach additional responsibilities to an object dynamically.Decorators provide a flexible alternative to subclassing for extendingfunctionality.<A NAME="cat-facade"></A><DT><B><A HREF="pat4efs.htm" TARGET="_mainDisplayFrame">Facade (185)</A></B><DD>Provide a unified interface to a set of interfaces in a subsystem.Facade defines a higher-level interface that makes the subsystemeasier to use.<A NAME="cat-flywt"></A><DT><B><A HREF="pat4ffs.htm" TARGET="_mainDisplayFrame">Flyweight (195)</A></B><DD>Use sharing to support large numbers of fine-grained objects efficiently.<A NAME="cat-proxy"></A><DT><B><A HREF="pat4gfs.htm" TARGET="_mainDisplayFrame">Proxy (207)</A></B><DD>Provide a surrogate or placeholder for another object to controlaccess to it.<BR><BR><A NAME="disc4"></A><DT><B><A HREF="disc4fs.htm" TARGET="_mainDisplayFrame">Discussionof Structural Patterns</A></B></DL><A NAME="behavioral"></A><H2><A HREF="#last"><IMG SRC="gifsb/down3.gif" BORDER=0 ALT="next: navigation"></A><A HREF="chap5fs.htm" TARGET="_mainDisplayFrame">Behavioral Patterns</A></H2><DL><DT><B><A HREF="pat5afs.htm" TARGET="_mainDisplayFrame">Chain of Responsibility (223)</A></B><DD>Avoid coupling the sender of a request to its receiver by giving morethan one object a chance to handle the request. Chain the receivingobjects and pass the request along the chain until an objecthandles it.<DT><B><A HREF="pat5bfs.htm" TARGET="_mainDisplayFrame">Command (233)</A></B><DD>Encapsulate a request as an object, thereby letting you parameterizeclients with different requests, queue or log requests, and supportundoable operations.<DT><B><A HREF="pat5cfs.htm" TARGET="_mainDisplayFrame">Interpreter (243)</A></B><DD>Given a language, define a represention for its grammar along with aninterpreter that uses the representation to interpret sentences in thelanguage.<DT><B><A HREF="pat5dfs.htm" TARGET="_mainDisplayFrame">Iterator (257)</A></B><DD>Provide a way to access the elements of an aggregate objectsequentially without exposing its underlying representation.<A NAME="cat-media"></A><DT><B><A HREF="pat5efs.htm" TARGET="_mainDisplayFrame">Mediator (273)</A></B><DD>Define an object that encapsulates how a set of objects interact.Mediator promotes loose coupling by keeping objects from referring toeach other explicitly, and it lets you vary their interactionindependently.<A NAME="cat-memen"></A><DT><B><A HREF="pat5ffs.htm" TARGET="_mainDisplayFrame">Memento (283)</A></B><DD>Without violating encapsulation, capture and externalize an object'sinternal state so that the object can be restored to this state later.<DT><B><A HREF="pat5gfs.htm" TARGET="_mainDisplayFrame">Observer (293)</A></B><DD>Define a one-to-many dependency between objects so that when oneobject changes state, all its dependents are notified and updatedautomatically.<A NAME="cat-state"></A><DT><B><A HREF="pat5hfs.htm" TARGET="_mainDisplayFrame">State (305)</A></B><DD>Allow an object to alter its behavior when its internal state changes.The object will appear to change its class.<A NAME="cat-strat"></A><DT><B><A HREF="pat5ifs.htm" TARGET="_mainDisplayFrame">Strategy (315)</A></B><DD>Define a family of algorithms, encapsulate each one, and make theminterchangeable. Strategy lets the algorithm vary independently fromclients that use it.<A NAME="cat-tempmeth"></A><DT><B><A HREF="pat5jfs.htm" TARGET="_mainDisplayFrame">Template Method (325)</A></B><DD>Define the skeleton of an algorithm in an operation, deferring somesteps to subclasses. Template Method lets subclasses redefinecertain steps of an algorithm without changing the algorithm'sstructure.<A NAME="cat-visit"></A><DT><B><A HREF="pat5kfs.htm" TARGET="_mainDisplayFrame">Visitor (331)</A></B><DD>Represent an operation to be performed on the elements of an objectstructure. Visitor lets you define a new operation without changing theclasses of the elements on which it operates.<BR><BR><A NAME="disc5"></A><DT><B><A HREF="disc5fs.htm" TARGET="_mainDisplayFrame">Discussionof Behavioral Patterns</A></B></DL><A NAME="last"></A><P><A HREF="#top"><IMG SRC="gifsb/up3.gif" BORDER=0></A><BR><A HREF="chap3fs.htm" TARGET="_mainDisplayFrame"><IMG SRC="gifsb/rightar3.gif" ALIGN=TOP BORDER=0></A> <A HREF="chap3fs.htm" TARGET="_mainDisplayFrame">Creational Patterns</A><BR><A HREF="chap2fs.htm" TARGET="_mainDisplayFrame"><IMG SRC="gifsb/leftarr3.gif" ALIGN=TOP BORDER=0></A> <A HREF="chap2fs.htm" TARGET="_mainDisplayFrame">Case Study</A></P></BODY></HTML>?? 快捷鍵說明
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