How to make a plugin SchemaAware or XAware, runtime wise? (Solr 3.6.1)

[Per Fredelius <pe...@gmail.com>]

So I'm creating a request handler plugin where I want to fetch some values
from the schema. I make it SchemaAware but the inform method is never
called. I assume that there is some way of registering the instance as
aware (and I have seen and used this before, although that information
escapes me at this point). I can't find any documentation on this in
particular and neither can I find any calls doing this in the solr
source<https://github.com/apache/lucene-solr/blob/branch_3x/solr/core/src/java/org/apache/solr/schema/CurrencyField.java>.
But this could very well be done outside the

So, is there some procedure for initiating getting inform calls?

/Thanks :)

Re: How to make a plugin SchemaAware or XAware, runtime wise? (Solr 3.6.1)

[Chris Hostetter <ho...@fucit.org>]

: I'm sorry, I don't see how the resource loader awareness is relevant to
: schema awareness? Or perhaps you didn't imply that? Good to know about the

No, my mistake ... typed one when i ment the other one.

: I guess I use the core to get to the schema then. Hmm, I may recall trying
: that at some point but that I hit some problem with that, something like
: the schema not being present when getting core inform call.

the schema (and the rest of the SolrCore) should be fully constructed and 
populated by the time inform(SolrCore) is called -- that's the entire 
point of these "FooAware" interfaces and the delayed "inform(Foo)" about 
the them.

-Hoss

Re: How to make a plugin SchemaAware or XAware, runtime wise? (Solr 3.6.1)

[Per Fredelius <pe...@gmail.com>]

I'm sorry, I don't see how the resource loader awareness is relevant to
schema awareness? Or perhaps you didn't imply that? Good to know about the
resource loader though. Although I'm not sure what the resource loader does
at this point (but that's a side track).

I guess I use the core to get to the schema then. Hmm, I may recall trying
that at some point but that I hit some problem with that, something like
the schema not being present when getting core inform call.

/Per


2012/12/5 Chris Hostetter <ho...@fucit.org>

>
> : So I'm creating a request handler plugin where I want to fetch some
> values
> : from the schema. I make it SchemaAware but the inform method is never
> : called. I assume that there is some way of registering the instance as
> : aware (and I have seen and used this before, although that information
> : escapes me at this point). I can't find any documentation on this in
>
> http://wiki.apache.org/solr/SolrPlugins#Building_Plugins
>
> Because of lifecycle complexities, not all plugins can be
> "ResourceLoaderAware" or "SolrCoreAware".
>
> If you want to initialize your RequestHandler with information from the
> ResourceLoader, just make it SolrCoreAware and then in your
> inform(SolrCore core) method you can call core.getResourceLoader().
>
>
> -Hoss
>

Re: How to make a plugin SchemaAware or XAware, runtime wise? (Solr 3.6.1)

[Chris Hostetter <ho...@fucit.org>]

: So I'm creating a request handler plugin where I want to fetch some values
: from the schema. I make it SchemaAware but the inform method is never
: called. I assume that there is some way of registering the instance as
: aware (and I have seen and used this before, although that information
: escapes me at this point). I can't find any documentation on this in

http://wiki.apache.org/solr/SolrPlugins#Building_Plugins

Because of lifecycle complexities, not all plugins can be 
"ResourceLoaderAware" or "SolrCoreAware".

If you want to initialize your RequestHandler with information from the 
ResourceLoader, just make it SolrCoreAware and then in your 
inform(SolrCore core) method you can call core.getResourceLoader().


-Hoss