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https://issues.apache.org/jira/browse/ISIS-383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662923#comment-13662923
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Dan Haywood commented on ISIS-383:
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Thanks for this advice, Martin.

Solr [1] looks like it builds on Lucene (you can tell I know nothing about 
this), and is part of the Apache family, so maybe that looks like it ought to 
get priority.

That said, a quick google confirms that ElasticSearch has a compatible license 
(ASL v2, in fact) [2], so that's definitely a possibility.  And reading between 
the lines, it sounds like you' have a preference for ES?


[1] http://lucene.apache.org/solr/
[2] http://www.elasticsearch.org/overview/
                
> [GSOC2013] integrate Apache Lucene with Apache Isis as a generic text search 
> engine
> -----------------------------------------------------------------------------------
>
>                 Key: ISIS-383
>                 URL: https://issues.apache.org/jira/browse/ISIS-383
>             Project: Isis
>          Issue Type: New Feature
>            Reporter: Dan Haywood
>            Assignee: Dan Haywood
>              Labels: gsoc, gsoc2013
>         Attachments: isis-lucene.zip
>
>
> Isis is most often used with its JDO integration, a fairly conventional ORM.  
> Searching for existing domain objects therefore requires a query to be 
> defined.
> But sometimes users want to just search for any object (like searching the 
> web).  This ticket is to integrate Isis so that its domain objects can be 
> indexed by Lucene and thus provide a generic search capability.
> One way to get hold of the text (to be indexed) might be to use the existing 
> capability to convert all objects into JSON (by the 
> isis-restfulobjects-rendering module). 
> It is also pretty easy to hook into Isis' objectstore to know when an object 
> is being updated (to sync with Lucene's indexes).

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