How can a Tokenizer be CoreAware?

[Benson Margulies <bi...@gmail.com>]

I am currently testing some things with Solr 4.0.0. I tried to make a
tokenizer CoreAware, and was rewarded with:

Caused by: org.apache.solr.common.SolrException: Invalid 'Aware'
object: com.basistech.rlp.solr.RLPTokenizerFactory@19336006 --
org.apache.solr.util.plugin.SolrCoreAware must be an instance of:
[org.apache.solr.request.SolrRequestHandler]
[org.apache.solr.response.QueryResponseWriter]
[org.apache.solr.handler.component.SearchComponent]
[org.apache.solr.update.processor.UpdateRequestProcessorFactory]
[org.apache.solr.handler.component.ShardHandlerFactory]

I need this to allow cleanup of some cached items in the tokenizer.

Questions:

1: will a newer version allow me to do this directly?
2: is there some other approach that anyone would recommend? I could,
for example, make a fake object in the list above to act as a
singleton with a static accessor, but that seems pretty ugly.

Re: How can a Tokenizer be CoreAware?

[bbarani <bb...@gmail.com>]

I am not an expert on this one but I would try doing this..I would implement
SolrCoreAware class and override inform method to make it core aware..

something like ...

public void inform( SolrCore core )




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Re: How can a Tokenizer be CoreAware?

[Michael Sokolov <ms...@safaribooksonline.com>]

Benson, I think the idea is that Tokenizers are created as needed (from 
the TokenizerFactory), while those other objects are singular (one 
created for each corresponding stanza in solrconfig.xml).  So Tokenizers 
should be short-lived; they'll be cleaned up after each use, and the 
assumption is you wouldn't need to do any cleanup yourself; rather just 
let the garbage collector do its work -- assuming these are per-document 
resources.  But if you have longer-lived resources, maybe you could 
manage them in the TokenizerFactory, which will be a singleton?  Or in 
UpdateRequestProcessFactory, like you suggested

-Mike

On 5/29/13 7:36 AM, Benson Margulies wrote:
> I am currently testing some things with Solr 4.0.0. I tried to make a
> tokenizer CoreAware, and was rewarded with:
>
> Caused by: org.apache.solr.common.SolrException: Invalid 'Aware'
> object: com.basistech.rlp.solr.RLPTokenizerFactory@19336006 --
> org.apache.solr.util.plugin.SolrCoreAware must be an instance of:
> [org.apache.solr.request.SolrRequestHandler]
> [org.apache.solr.response.QueryResponseWriter]
> [org.apache.solr.handler.component.SearchComponent]
> [org.apache.solr.update.processor.UpdateRequestProcessorFactory]
> [org.apache.solr.handler.component.ShardHandlerFactory]
>
> I need this to allow cleanup of some cached items in the tokenizer.
>
> Questions:
>
> 1: will a newer version allow me to do this directly?
> 2: is there some other approach that anyone would recommend? I could,
> for example, make a fake object in the list above to act as a
> singleton with a static accessor, but that seems pretty ugly.