Re: Is complex query like this possible?

[Sergei Ananko]

Hello, Chris.

Thank you and Mikhail for the explanation. I'll think about changing the model 
of indexing to be able to handle this case.

 : DIR:true
 : PATH:/root/folder1/folder2/
 : NAME:folder3
 : SIZE:0
 ...
 : DIR:false
 : PATH:/root/folder1/folder2/folder3/
 : NAME:image.jpg
 : SIZE:1234567
 ...
 : your solution). Also, in my previous example a file of specified type
 : may be deeper than one level: if there are /root/folder1, /root/folder2
 : and file /root/folder1/aaa/bbb/ccc/image.jpg, and I query for folder,
 : only folder1 must be returned.

 I don't think you're going to find an *easy* way to do what you want --
 solr is designed to return *documents* that match queries, and you've 
 modeled documents to match individual files -- so it's not easy to get
 solr to return the ancestor directories of those files as results.

 grouping could be used for something like find the parent directories of
 files that match this query if you grouped on the PATH, but that won't
 help you with your expectation that 
 an example like /root/folder1/aaa/bbb/ccc/image.jpg should return 
 /root/folder1

 -Hoss


-- 
Best regards,
Asv mailto:asvs...@gmail.com 

Is complex query like this possible?

[Sergei Ananko]

Hello, 

We use Solr to search over a filesystem, so there are a lot of files and 
folders indexed, name and path of each file are stored in different fields. The 
task is to find folders by name AND containing at least one file of specific 
type somewhere inside. For example, we search by phrase test and for JPG 
files and have two folders:

1) test1 - empty folder
2) test2 - contains 1 file abcd.jpg inside.

Search result must only contain folder test2, because test1 does not 
correspond to second criteria.

SQL equivalent of such search query looks like:

SELECT * FROM indexed_files t1 WHERE t1.name LIKE '%test%' AND (SELECT COUNT(*) 
FROM indexed_files t2 WHERE t2.path LIKE CONCAT(t1.path, '%') AND t2.name LIKE 
'%jpg')  0; 

The question is: is it possible to do such search in Solr by single query? 
Single query is important because we need to use Solr's paging (start and 
rows parameters), so we should avoid filtering of wrong results in our code. 
I've read Solr wiki about nested queries but haven't found a way to do it. BTW, 
does Solr provide equivalent of SELECT COUNT(*) statement to access count of 
found records directly in Solr query? Or such complex query is completely 
impossible?

-- 
Best regards,
 Asv  mailto:asvs...@gmail.com