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Topic: Composite pattern


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  Design Pattern Synopses
The Filter pattern is a special case of the Decorator pattern, where a data source or data sink object is wrapped to add logic to the handling of a data stream.
The Composite pattern also allows the objects in the tree to be manipulated in a consistent manner, by requiring all of the objects in the tree to have a common superclass or interface.
The Flyweight pattern is often combined with the Composite pattern to represent the leaf nodes of a hierarchical structure with shared objects.
www.mindspring.com /~mgrand/pattern_synopses.htm   (4381 words)

  
 XML.com: Structural Patterns in XML
Pattern recognition is fundamental to the human intellect.
The practice of pattern recognition and use was first formalized with respect to object-oriented analysis and design (see GoF) and is for many people closely associated with OOP languages such as C++ and Java.
In this toy astronomy schema, the Composite pattern is expressed in three types, since both celestial bodies and orbital systems have position and velocity, but only bodies have mass and only systems have children.
www.xml.com /pub/a/2002/09/04/strucpatterns.html   (705 words)

  
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When the operation() method of a Composite object is called, it simply dispatches the request sequentially to all of its "children" components.
Thus composite behavior of Leaf1 plus Leaf2 behaviors is achieved without either duplicating code or by having the Client object knowing that the two leaf components were involved.
Composite patterns are often used to represent recursive data structures.
www.exciton.cs.rice.edu /JavaResources/DesignPatterns/composite.htm   (378 words)

  
 Composite
Use this pattern whenever you have "composites that contain components, each of which could be a composite".
Composite and Decorator have similar structure diagrams, reflecting the fact that both rely on recursive composition to organize an open-ended number of objects.
At the heart of this pattern is the ability for a client to perform operations on an object without needing to know that there are many objects inside.
home.earthlink.net /~huston2/dp/composite.html   (1163 words)

  
 Composite Pattern
I sometime use (what I guess is) a degenerate CompositePattern in which the Leaf and Composite have the same interface as the base class, but only the Composite has the collection interface.
There is a continuous space of possible solutions; the Composite as described in the DesignPatternsBook is a typical example, not the only right way to define aggregates.
She argues that patterns need to evolve and uses the CompositePattern as an example.
c2.com /cgi/wiki?CompositePattern   (556 words)

  
 Developing an On Demand Workplace, Part 3: A custom design based on the Portal Composite Pattern architecture   (Site not responding. Last check: 2007-11-04)
The Portal composite pattern is a set of Business and Integration patterns that provide centralized access to appropriate information and existing systems to meet the business objectives of the company.
The Portal composite pattern is typically designed to aggregate multiple information sources and applications to provide uniform, seamless, and personalized access for users.
Also, this pattern is applicable to user-centric business processes, which may include a formal workflow layer to manage collaboration between organizations or departments within an enterprise.
www.ibm.com /developerworks/ibm/library/i-workplace3   (4167 words)

  
 Composite Design Pattern in C# and VB.NET.
defines behavior for primitive objects in the composition.
code demonstrates the Composite pattern which allows the creation of a tree structure in which individual nodes are accessed uniformly whether they are leaf nodes or branch (composite) nodes.
code demonstrates the Composite pattern used in building a graphical tree structure made up of primitive nodes (lines, circles, etc) and composite nodes (groups of drawing elements that make up more complex elements).
www.dofactory.com /Patterns/PatternComposite.aspx   (215 words)

  
 Introducing the Composite Pattern in PHP 5   (Site not responding. Last check: 2007-11-04)
The composite pattern is one of the less commonly used patterns in PHP 5.
In crude terms, when the composite pattern is applied in the context of a given application, one single object or a group of these objects will expose a nearly identical behavior.
Having introduced quickly a basic definition on the composite pattern, let's move on and see how it can be implemented in PHP 5.
www.devshed.com /c/a/PHP/Introducing-the-Composite-Pattern-in-PHP-5   (971 words)

  
 A look at the Composite design pattern - Java World
Before we dive into the Composite pattern, I must first define composite objects: objects that contain other objects; for example, a drawing may be composed of graphic primitives, such as lines, circles, rectangles, text, and so on.
But we also want to perform the same operation on composites, such as drawings, that are composed of those primitives.
If we must distinguish between primitive objects and composites to perform the same operations on those two types of objects, our code would become more complex and more difficult to implement, maintain, and extend.
www.javaworld.com /javaworld/jw-09-2002/jw-0913-designpatterns.html   (761 words)

  
 IBM Redbooks | A Portal Composite Pattern Using WebSphere Portal V4.1
The Patterns for e-business are a group of proven, reusable assets that can speed the process of developing applications.
It shows how the Composite pattern works and documents the tasks required to build a technical scenario of it.
Part 1 of the redbook guides you through the process of choosing the Business and Integration patterns of the Composite pattern and then drill down to the Application and Runtime pattern and Product mapping to deliver the desired functionality of the Portal composite pattern.
www.redbooks.ibm.com /Redbooks.nsf/9445fa5b416f6e32852569ae006bb65f/309f4c3c906a089c85256bf800630def?OpenDocument   (467 words)

  
 McClean Anderson - FILAMENT WINDING MACHINES
The system is further enhanced with our Windows®-based Composite Designer winding pattern development software.
The system is further enhanced with our Windows®-based Composite Designer pattern development software.
The Sand Delivery is driven by the Flexwind machine control and Composite Designer pattern development software.
www.mccleananderson.com /products/filament_winders/filament_winders.htm   (404 words)

  
 David Hill's WebLog : Composite Smart Clients
A composite smart client allows the client solution to be composed of a number of discrete functional pieces (modules) that are integrated together within a host environment to form a fully coherent smart client solution.
The composite pattern is a very important pattern and one that we have seen a lot in enterprise line-of-business smart client solutions – Dell, Thomson Financial, Commonwealth Bank of Australia, and call center applications built on the Microsoft
A smart client using this architecture generally involves a shell, which provides the overall user interface structure and access to a number of smart client services, and the modules which integrate with the user interface and communicate with the shell and with each other.
blogs.msdn.com /dphill/articles/371327.aspx   (1410 words)

  
 Composite Pattern (Arithmetische Ausdrücke) - Forum - CHIP Online
Dies soll mittels des Composite Patterns realisiert werden.
Die beim Composite Pattern integrierten Leaf-Objekte sollen in dem Ausdruck die Variablen darstellen (also a, b, c, d).
sowas nennt man gewöhnlicherweise "baum"/"tree", nicht "composite pattern".
www.chip.de /c1_forum/thread.html?bwthreadid=1015949   (212 words)

  
 Core J2EE Patterns
See Core J2EE Patterns, 2nd Edition for full description of this pattern and its strategies.
A Composite represents objects as part-whole hierarchies, treating individual objects and compositions of objects uniformly.
See the book for full description of the pattern including class diagrams, sequence diagrams and sample code.
corej2eepatterns.com /Patterns2ndEd/ApplicationController.htm   (240 words)

  
 Composite Pattern Fun - Dev Shed
Composite Pattern Fun Software design forum discussing design principles and non-language specific algorithms.
Another approach would be to use the composite pattern and also have two separate process methods:
IBM® Lotus® Expeditor software is IBM's universal managed client software to extend composite applications to laptops, desktops, kiosks and mobile devices.
forums.devshed.com /software-design-43/composite-pattern-fun-437003.html?goto=lastpost   (1059 words)

  
 WP Experts - Our Redbooks on WebSphere Portal and IBM Workplace Web Content Management
This is an update of the IBM Redbook A Portal Composite Pattern Using WebSphere V4.1, SG24-6869, and is based on WebSphere Portal V5.
Part 1 of this publication describes a business scenario that can be well served by the use of a portal.
It guides you through the process of choosing the Business and Integration patterns of the Composite pattern and then drilling down to the Application and Runtime pattern and Product mapping to deliver the desired functionality of the Portal composite pattern.
www.wpexperts.com /websphere_portal/publications.html   (1048 words)

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