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From Chris Bamford <chris.bamf...@talktalk.net>
Subject Re: More questions on BlockJoinQuery
Date Wed, 20 Feb 2013 16:45:10 GMT

 Thanks Steve, sounds very useful.  These are my steps:

tar xzvf ~/Downloads/lucene-4.1.0-src.tgz 
cd lucene-4.1.0
ant
ant idea

This last step fails with:

  Buildfile: /Users/cbamford/projects/lucene-4.1.0/build.xml

  BUILD FAILED
  Target "idea" does not exist in the project "lucene". 

  Total time: 0 seconds

 
What have I done wrong?

Thanks!

- Chris

 

-----Original Message-----
From: Steve Rowe <sarowe@gmail.com>
To: java-user@lucene.apache.org
Sent: Wed, 20 Feb 2013 16:29
Subject: Re: More questions on BlockJoinQuery


Hi Chris,

This mailing list is fine for discussing IntelliJ and Maven issues as they 
relate to Lucene.

You'll need Ant v1.8.2+ to bootstrap things.

'ant idea' at the top level will produce an IntelliJ project you can open - see 
<http://wiki.apache.org/lucene-java/HowtoConfigureIntelliJ> for more info.

For some treatment of Maven issues, see dev-tools/maven/README.maven.

Steve

On Feb 20, 2013, at 10:48 AM, Chris Bamford <chris.bamford@talktalk.net> wrote:

> 
> Thanks Mike.
> I have downloaded the source tarball for 4.1.0 and have tried to get it 
working, but am having a few problems getting it to fit with my environment 
(intelliJ / Maven).
> Where is the best forum to discuss such issues?
> 
> Chris
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Michael McCandless <lucene@mikemccandless.com>
> To: java-user@lucene.apache.org
> Sent: Tue, 12 Feb 2013 15:17
> Subject: Re: More questions on BlockJoinQuery
> 
> 
> On Tue, Feb 12, 2013 at 7:43 AM, Chris Bamford
> <chris.bamford@talktalk.net> wrote:
> 
>>> Could you please send this to the java-user@lucene.apache.org list?
>> 
>> I thought I did!  :-)  Here it is again:
> 
> Duh, my bad :)  You are right!
> 
> I saw the "Hi Mike" and stopped there!
> 
> Responses below:
> 
>> I have a question about your post "Searching relational content with Lucene's
>> BlockJoinQuery"
>> (http://blog.mikemccandless.com/2012/01/searching-relational-content-with.html).
>> I am actually trying to use Lucene 4.0.0, so am having to translate your 
> example to
>> the newer ToParentBlockJoinQuery / ToChildBlockJoinQuery APIs.  I have had 
> some success,
>> but my ultimate goal of combining the info from both child and parent hits is 

> eluding
>> me.  I  suspect I am missing something, but as yet haven't figured out what!
>> 
>> In this scenario, let's say I have the following relationship:
>> 
>> child 1 :   ref:"100", content:"child 1", type:"C"
>> child 2 :   ref:"200", content:"child 2", type:"C"
>> child 3 :   ref:"300", content:"child 3", type:"C"
>> parent  :   ref:"400", content:"parent", type:"P"
>> 
>> When one or more children are hit, I want that to be noted against the 
parent,
>> so ultimately I can create a result object like:
>> 
>> Result{ ref:400, content:"parent", matches: [100, 300] }  // children 1 & 3
>> were hit
>> 
>> I have followed your example closely just replacing BlockJoinQuery with
>> ToParentBlockJoinQuery and BlockJoinCollector with ToParentBlockJoinCollector.
>> Unfortunately I seem to be able to get either:
>> 
>> Just the parent objects (with td=s.search(q, 10)) or just the children (with 
> the
>> Collector),  but not both!
>> 
>> Am I to call search() twice (one returning TopDocs and the other GroupDocs 
via
>> the Collector) and join them myself?  Or does one of these calls return me 
> both
>> types of documents, grouped and sorted?
> 
> You should only call IndexSearcher.search once, but you should pass
> your ToParentBlockJoinCollector instance IS.search(query, collector),
> and then you call collector.getTopGroups to get the parent & children.
> 
> Maybe have a look @ the unit test to get ideas?
> 
>  https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_1/lucene/join/src/test/org/apache/lucene/search/join/TestBlockJoin.java
> 
> BTW you should upgrade to 4.1.0!
> 
> Mike McCandless
> 
> http://blog.mikemccandless.com
> 
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> 
> 


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