A design pattern question -


I am preparing an application, and I am unable to pinpoint the correct design for it. I have one in mind, but it is not part of GOF pattern and therefore I'm not sure that this is a good way.

My project probably creates data from any data 15-20 documents (documents are of the same type, but data can vary widely). After receiving the data, it should be displayed and displayed in any supported 4 formats. Also, to complicate matters, even though the documents are broadly classified into 4-5 types, some documents (in these classifications) are formatted in the same form.

Now, I have given it the following methods:

  • Data creation
  • Data display

Data creation common interface Creates an interface with an interface that can control all of these documents.

The data display reads through the data object and displays the way it is needed.

My first question is - I did not know about such an interface object. GOF pattern set is such a good design decision?

As I mentioned earlier, only two documents are formatted in such a way - across classification. The problem here is that other documents - which should be formatted equally - are not. Therefore, when I receive the data, I want to clone the code in a scenario, which I do not want.

So, my second question is - What is the best way to handle it?

If someone can help me, I would be very grateful.

Do not try too hard patterns push in advance understand some designs And then try the manifest pattern in them. Patterns are for conversation and it can only be seen as reusable for some specific concern.

So your wide problem is that you have provided X documents and Y.

  • Try creating a class hierarchy to create a document, Can cause some logic or use the interface
  • If you can not detect the interface of all types of documents, you can trust the adapter ,
  • For multiple renders, Take a look at the visitor pattern, decorator pattern or strategy pattern, or simply plain succession / polymorphism Is used with Y, which implements the same interface. It depends on the nature of variations
  • To get the right renderer in terms of usage, you can use the factory to embed the decision and immediate logic .

GoF Patterns are less granularity than your problem. You have to find a design that corresponds to your very specific requirement. In case of suspicion, always choose the design that is simple / more intuitive .

My 2 cents

not with the highest pattern and fancy class hierarchy.

Comments

Post a Comment

Popular posts from this blog

sql - dynamically varied number of conditions in the 'where' statement using LINQ -

I am using my first project LINQ (in mvc), so maybe there's something very simple that I remember. However, a day of searching and experimenting does not work, so it works. I am trying to write a LINQ query (Linux to SQL) in which in many cases where the statement is different from an OR or an AND. We do not know how many conditions are going in the query till runtime. This search is for filter control, where the user can choose multiple criteria for filtering. Select from table where table.col = 1 or table.col = 2 or table.col = 7 .... 'Other number of conditions Before I just create the SQL query as a string, while looping over all the situations. However, it seems that there should be a good way to do this in LINQ. I tried to use Expression trees, but they had a second thought for this moment on my head, where the lambda function was to be executed inside the statement such as: values ​​for matchingRows = matchingRows for each value Where (function (row) row.c...
Read more

asp.net mvc - Dynamically Generated Ajax.BeginForm -

I have a problem with ASP.NET MVC Ajax forms. I generate many Ajax form in a table such as: & Lt; Input type = "submit" name = "activity" value = "add activity" / & gt; & Lt;%}% & gt; & Lt; / TD & gt; & Lt; / TR & gt; & Lt;%}% & gt; So far so good. When I post one of those forms, it gives a partial view in a div, and in this new partial view a new Ajax Beginnform (which is not in Genesis form) This second Ajax Beginnorf is exactly like the ones I got on the table, but when I post it, I do not get the "Ajax Post", but a normal post that sends me to a new page, I do not know whether the two Ajax forms What is the reason for the difference between, why is it the "dynamically generated" Ajax form behaves like a normal HTML form? By the way, I know that I can do it in different ways using javascript, but I would like to understand whether it can only be done using MVC helplars and Ajax lib...
Read more

Debug on symbian -

I am using trk for phone debug This works well for the Holorld project But when I start the project in phone debug mode 1) the load failed 2) TrkProtocolPlugin: to target the specified file Failure (please verify If any body understands what problem I am experiencing, then this problem helps me Pre-release If the application has the privileges assigned (with the appropriate certificate) itemprop = "text" > In your case, I will check: / li> If there is no conflict of application ID with any other application of device If there are problematic commands in the installation package (for example copy copy for non-accessible directories)
Read more