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README Singleton

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Dominik Liebler 2013-09-24 14:10:45 +02:00
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# Singleton
**THIS IS CONSIDERED TO BE AN ANTI-PATTERN! FOR BETTER TESTABILITY AND MAINTAINABILITY USE DEPENDENCY INJECTION!**
## Purpose
To have only one instance of this object in the application that will handle all calls.
## Examples
* DB Connector
* Logger (may also be a Multiton if there are many log files for several purposes)
* Lock file for the application (there is only one in the filesystem ...)

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namespace DesignPatterns\Singleton; namespace DesignPatterns\Singleton;
/** /**
* Singleton pattern * class Singleton
*
* --------------------------------------------------------------------------------------------------------------
* THIS IS CONSIDERED TO BE AN ANTI-PATTERN! FOR BETTER TESTABILITY AND MAINTAINABILITY USE DEPENDENCY INJECTION!
* --------------------------------------------------------------------------------------------------------------
*
* Purpose:
* to have only one instance of this object in the application that will handle all calls
*
* Examples:
* - DB Connector
* - Logger (may also be a Multiton if there are many log files for several purposes)
* - Lock file for the application (there is only one in the filesystem ...)
*/ */
class Singleton class Singleton
{ {