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Discussion on challenges while implementing design pattern Model View Controller in ABAP objects.

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Singleton Design Pattern is most heavily used in OO based developments. Lets see an usage of Singleton Design pattern.

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Many times, I see incorrect usage of ABAP Objects in custom development. In this two post blog series, I would show few incorrect designs and finally would show OO approach.

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Combining the power of both design patterns: Singleton and Factory Method. Singleton produces the same object again where as Factory instantiates new object every time asked. Lets see how they both come together.. Background Few days back, I read the post on SDN – Factory Design Pattern. The post reminded me that I use the…

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Prototype design pattern allows the flexibility to create itself – cloning. Lets check out, how to achieve this in ABAP objects. What is Prototype You have instantiated an object, called some operations. Your object is now in a state from which you wish to copy itself. In other words, you want to clone the object….

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Proxy acts on behalf of some other objects. When working with Proxies, as name suggest, you work with another object rather than actual object. Lets checkout Proxy design pattern implementation in ABAP. What is a Proxy? Sometimes, you need to delay the instantiation of the object may be because its too costly to instantiate or…

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