Hierarchical schema design

[Pooja Verlani <po...@gmail.com>]

Hi all,
Is there a possibility to have a hierarchical schema in solr, meaning can we
have objects under objects.
For example, for a doc like:
<doc>
 <a1>
     <b1>
     <b2>
     <b3>
</a1>
<a2>
      <b1>
      <b2>
      ,b3>
</a2>
.
.
.
.
.
.
.
</doc>

I need to make schema with 3 types of such objects and all of them having
different field values for each.

Please reply if there exists such a possibility.

Regards.
Pooja

Re: Hierarchical schema design

[Avlesh Singh <av...@gmail.com>]

As Uri has already replied, there is no concept of "a hierarchical schema"
in Solr.
My gut feeling says you might be talking about Multiple
cores<http://www.google.co.in/search?q=multiple+core+solr&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a>
.

Cheers
Avlesh

On Mon, Aug 31, 2009 at 5:26 PM, Pooja Verlani <po...@gmail.com>wrote:

> Hi all,
> Is there a possibility to have a hierarchical schema in solr, meaning can
> we
> have objects under objects.
> For example, for a doc like:
> <doc>
>  <a1>
>     <b1>
>     <b2>
>     <b3>
> </a1>
> <a2>
>      <b1>
>      <b2>
>      ,b3>
> </a2>
> .
> .
> .
> .
> .
> .
> .
> </doc>
>
> I need to make schema with 3 types of such objects and all of them having
> different field values for each.
>
> Please reply if there exists such a possibility.
>
> Regards.
> Pooja
>

Re: Hierarchical schema design

[Uri Boness <ub...@gmail.com>]

Hi,

The search index is flat. There are no hierarchies in there. Now, I'm 
not sure what you're referring to with "this type of objects". But if 
you refer to having different types of documents in one index (and 
schema) that's certainly possible. You can define all the fields that 
you expect in all the different document types in one schema and have 
one special field (called "type") to distinguish between the document 
types (it will hold a unique value for each document type). The only 
drawback of this solutions is that you cannot (in most cases) define the 
fields as required. Another solution would be to deploy the different 
documents on different core, where each core has its own schema (and 
index). The drawback here however is that you will not be able to search 
across the different document types.

Cheers,
Uri

Pooja Verlani wrote:
> Hi all,
> Is there a possibility to have a hierarchical schema in solr, meaning can we
> have objects under objects.
> For example, for a doc like:
> <doc>
>  <a1>
>      <b1>
>      <b2>
>      <b3>
> </a1>
> <a2>
>       <b1>
>       <b2>
>       ,b3>
> </a2>
> .
> .
> .
> .
> .
> .
> .
> </doc>
>
> I need to make schema with 3 types of such objects and all of them having
> different field values for each.
>
> Please reply if there exists such a possibility.
>
> Regards.
> Pooja
>
>