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Proxy pattern: Improve the example

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Ilkka Seppälä
2016-11-23 22:03:26 +02:00
parent 92f8501f7d
commit 82d3d7bf1f
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proxy/README.md
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@ -18,24 +18,24 @@ Surrogate
Provide a surrogate or placeholder for another object to control
access to it.
![alt text](./etc/proxy_1.png "Proxy")
![alt text](./etc/proxy.png "Proxy")
## Applicability
Proxy is applicable whenever there is a need for a more
versatile or sophisticated reference to an object than a simple pointer. Here
are several common situations in which the Proxy pattern is applicable
* a remote proxy provides a local representative for an object in a different address space.
* a virtual proxy creates expensive objects on demand.
* a protection proxy controls access to the original object. Protection proxies are useful when objects should have different access rights.
* Remote proxy provides a local representative for an object in a different address space.
* Virtual proxy creates expensive objects on demand.
* Protection proxy controls access to the original object. Protection proxies are useful when objects should have different access rights.
## Typical Use Case
* control access to another object
* lazy initialization
* implement logging
* facilitate network connection
* to count references to an object
* Control access to another object
* Lazy initialization
* Implement logging
* Facilitate network connection
* Count references to an object
## Real world examples