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ID: 28673, Roll Your Own Dependency Injection demo
This is a demo program provided for a blog entry in the ADUG blog.
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For Delphi, Version 16.1
to 16.1
75 downloads
Copyright: No significant restrictions
Size: 16,157 bytes
Updated on Tue, 20 Dec 2011 17:59:34 GMT
Originally uploaded on Mon, 19 Dec 2011 23:07:18 GMT
SHA1 Hash: 4FD5B1B83CC77B650588197A21B36E42037A83D5
MD5 Hash: F6B4D03BE38A3959FFD6F54C84A59512
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In Part 1 we covered the beginnings of rolling your own Dependency Injection framework as an alternative to using the Delphi Spring Framework. We discussed the patterns and objects involved and described using RTTI to perform the actual injection. Now we'll look at an example of using DI to inject logging functionality into an object.
So, here is what DI looks like in action. Let's say you build a car and all the salient action on that car, including construction, is logged in a logger. In Listing 1, ILogger is an interface to some event logger like CodeSite, SmartInspect or maybe just writes lines to a text file. ICar uses an instance of ILogger on the inside to record vehicle events.
(continued in blog)
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