introductions. and: is RavenDB right for me? - ravendb

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Date: Sun, 15 Apr 2012 14:30:14 +0200
Message-ID: <CABcSOXhNcxCogmE1VmNg+y4HnVq0wnO_vW=t1XjP70NdhiB...@mail.gmail.com>
Subject: Re: [RavenDB] introductions. and: is RavenDB right for me?
From: Ryan Heath <ryan.q.he...@gmail.com>
To: "ravendb@googlegroups.com" <ravendb@googlegroups.com>
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Inline ***

On Sunday, April 15, 2012, Serge van den Oever wrote:

> Thanks for the discussion, I think I learned a lot.
>
> I'm working on a really simple example to get the hang of it. What I want
> to do is create website/mobile app on top of MVC Web API.
> Say I want to model FAQ list:
>
> public class Faq
> {
>   string Id { get; set; }
>   string Question { get; set; }
>   string Answer { get; set; }
>   List<Category> Categories { get; set; }
> }
>
> public class Category
> {
>   string Id {get; set; }
>   string Name { get; set; }
>   int Order { get; set; } // need order when presenting for example list
> of categories
> }
>
> I started first with List<string> CategoryIds, but from the above
> discussion I learned not to do that.
>

*** in this case I would use a list of ids ... Since one category could be
used in one or more Faqs.


>  Ok, still have the question what if we rename the category? Should we go
> through all Faq's containing the category? What happens in cloud hosted
> scenario when you have to update a lot of Faq's? If each request costs
> money, we would have an O(n) approach?
>

*** you can issue patch commands which operate on documents at a time.


>
> I see also advantages, I assume full text search can index all info on
> your document, so you get more meaningful results instead of searching over
> documents having references!
>
> Now I want to put an MVC web api on top.
> i will get requests like:
>
> GET REQUEST: http://myserver/API/Faqs/123
>
> Will I return the same FAQ class used for persistance, or create a Web API
> "View model" class, and thanslate?
>

*** I would separate it yes where it makes sense. Think how your persistent
model could change but you still need to support version 1.0 of your api.


> I don't want the user of my api get a category Id categories/123, she
> should only see 123, so an new GET REQUEST
> http://myserver/API/Categories/123 can be done.
>

*** One small thing, you are not required to have integer ids, you might as
well have categories/mobile, categories/desktop etc etc as ids. Making your
api look more 'natural' or 'discoverable'.


> Another question: Should I maintain a separate set of Category documents?
> I need a picker for available categories, so need to trach them
> somewhere... Should I have each category as a seperate document, or create
> a single document witth all categories?
>

*** in this case I would yes separate category from FAQ
If category was nothing more than a name then I would have put it into FAQ


>
> Any ideas on this?
>

// Ryan

Sent from my iPhone

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Inline ***<br><br>On Sunday, April 15, 2012, Serge van den Oever  wrote:<br=
><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1=
px #ccc solid;padding-left:1ex"><div>Thanks for the discussion, I think I l=
earned a lot.</div>
<div><br></div><div>I&#39;m working on a really simple example to get the h=
ang of it. What I want to do is create website/mobile app on top of MVC Web=
 API.</div><div>Say I want to model FAQ list:</div><div><br></div><div>
public class Faq</div><div>{</div><div>=A0 string Id { get; set; }</div><di=
v>=A0 string Question { get; set; }</div><div>=A0 string Answer { get; set;=
 }</div><div>=A0 List&lt;Category&gt; Categories { get; set; }</div><div>}<=
/div>
<div><br></div><div>public class Category</div><div>{</div><div>=A0 string =
Id {get; set; }</div><div>=A0 string Name { get; set; }</div><div>=A0 int O=
rder { get; set; } // need order when presenting for example list of catego=
ries</div>
<div>}</div><div><br></div><div>I started first with List&lt;string&gt; Cat=
egoryIds, but from the above discussion I learned not to do that.</div></bl=
ockquote><div>=A0</div><div>*** in this case I would use a list of ids ... =
Since one category could be used in one or more Faqs.=A0</div>
<div>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex"><div>=A0Ok, still have the que=
stion what if we rename the category? Should we go through all Faq&#39;s co=
ntaining the category? What happens in cloud hosted scenario when you have =
to update a lot of Faq&#39;s? If each request costs money, we would have an=
 O(n) approach?</div>
</blockquote><div><br></div><div>*** you can issue patch commands which ope=
rate on documents at a time.=A0</div><div>=A0</div><blockquote class=3D"gma=
il_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex">
<div><br></div><div>I see also advantages, I assume full text search can in=
dex all info on your document, so you get more meaningful results instead o=
f searching over documents having references!</div><div><br></div><div>
Now I want to put an MVC web api on top.</div><div>i will get requests like=
:</div><div><br></div><div>GET REQUEST: <a href=3D"http://myserver/API/Faqs=
/123" target=3D"_blank">http://myserver/API/Faqs/123</a></div><div><br></di=
v>
<div>Will I return the same FAQ class used for persistance, or create a Web=
 API &quot;View model&quot; class, and thanslate?</div></blockquote><div><b=
r></div><div>*** I would separate it yes where it makes sense. Think how yo=
ur persistent model could change but you still need to support version 1.0 =
of your api.=A0</div>
<div>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex"><div>I don&#39;t want the user=
 of my api get a category Id categories/123, she should only see 123, so an=
 new GET REQUEST <a href=3D"http://myserver/API/Categories/123" target=3D"_=
blank">http://myserver/API/Categories/123</a> can be done.</div>
</blockquote><span class=3D"Apple-style-span" style><div><span class=3D"App=
le-style-span" style><br></span></div></span><span class=3D"Apple-style-spa=
n" style>*** One small thing, you are not required to have integer ids, you=
 might as well have categories/mobile, categories/desktop etc etc as ids. M=
aking your api look more &#39;natural&#39; or &#39;discoverable&#39;.=A0</s=
pan><div>
<span class=3D"Apple-style-span" style><br></span><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex"><div><br></div><div>Another question: Should I maintain a separate se=
t of Category documents? I need a picker for available categories, so need =
to trach them somewhere... Should I have each category as a seperate docume=
nt, or create a single document witth all categories?</div>
</blockquote><div><br></div><div>*** in this case I would yes separate cate=
gory from FAQ=A0</div><div>If category was nothing more than a name then I =
would have put it into FAQ=A0</div><span class=3D"Apple-style-span" style>=
=A0</span><div>
</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex"><div><br></div><div>Any ideas on this?=
</div></blockquote><div><br></div><div>// Ryan</div><div><br></div><div>Sen=
t from my iPhone =A0<span></span></div>
</div>

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