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The "documentation", which is nothing but a bunch of examples that only covers part of the functionality. Sign up or log in Sign up using Google. I even like your opening statement: Few questions, in your first example you actually show how you end up at the Manufacturers name, could you show how you would do this in your latter please? That you were building relations based on table names. AnthonySterling September 3, , 2:

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Unicorn Meta Zoo 9: More pedantry… To be a DataMapper the object being mapped must know nothing. Does anyone have experience with them? By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms phpeatamapper Service. A better solution is to not hang on to such references if you are creating a lot pjpdatamapper objects. Which can be referencing anything, the file system, a web server, etc.

I even like your opening statement:.

The are both implementations of the Data Mapper pattern. Perhaps slightly too magic. UserMapper allows some business logic to creep in and decide what to do if User cannot be saved etc… Maybe Mapper should be passed into UserMapper to allow different persistence methods?

Stack Overflow works best with JavaScript enabled. In doing so, I keep knowledge of the database relationships in pjpdatamapper mapper layer where they belong, and each object can remain blissfully unaware of the db.

Very mysterious behaviour, especially if it gets run twice. Your solution is a good one.

Data Mapper — DesignPatternsPHP documentation

Post as a guest Name. Something I should look into. Active record is fine. When I said complex, I meant Java scale complex.

One is a string, the other is an array. Can I not just instantiate this once myself? Sign up using Email and Password. Post as a guest Name. The "documentation", which is nothing but a bunch of examples that only covers part of the functionality. Writing a Data Mapper is an interesting project, so many issues to resolve: OutletORM, on the other hand, is a lot more pragmatic and flexible doesn't require you to extend any base classes for instance.

Not that simple, because you need to get the correct product from the order item, from the order.

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The font in my IDE was too small I guess, and I didn't see the ';' at the end of the line that declares the for loop. Been playing around recently with a PHP 5.

The fewer invisible threads connecting things the better. Pass by value, or pass the reference into the method so you only have linkage for the life of the method. Phpdatamappee wanted a way that supports unlimited chaining without having to write new functions in specific mappers every time I want a different object which may be any depth down the chain from the current mapper. Alex Weber Alex Weber 1, 1 1 gold badge 17 17 silver badges 26 26 bronze badges.

How do you distinguish between them in your code? Sign up using Facebook. Improving the question-asking experience.