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Thread: how to restrict search over one type of object

This question is answered. Helpful answers available: 0. Correct answers available: 1.


Permlink Replies: 32 - Pages: 3 [ 1 2 3 | Next ] - Last Post: Dec 14, 2011 7:29 PM Last Post By: anitas
dsbs

Posts: 2
Registered: 7/1/08
how to restrict search over one type of object
Posted: Jul 1, 2008 9:46 AM
 
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Hello

I'm new to compass, although with experience in Lucene, and so far I have up and running compass with JdbcDirectory and OSEM; it indexes and searches on mainly two different objects without any problem.

The question is, how can we restrict the search to just one specific type of object? Let's say we have these two objects (Book and CD)

Book
-Id
-Title
-Text

CD
-Id
-Title
-Song list

And at some point the user just want to search books, not CD's. I'm using a simple CompassSession.find with the query as it was typed by the user; but this returns the two types of objects. How can I restrict to just one type (book)?

I read that one can have as many indices as want, but I also want the ability to search both objects at the same time and return its results.

Is there any way to let Compass know that we are only interested in objects of certain type? Should I use a CompassQuerybuilder and add a parameter to the search?.. Any plans to have this implemented as a overload find method, where find(String query, Class classToRestrict) ?

Thanks
dsbs
Fabian Crabus

Posts: 15
Registered: 11/13/05
Re: how to restrict search over one type of object
Posted: Jul 1, 2008 10:01 AM   in response to: dsbs in response to: dsbs
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We use something like this:
CompassQuery compassQuery = builder.bool()
.addMust(builder.alias(type.getCanonicalName()))
.addMust(builder.queryString(query).toQuery())
.toQuery();

Where type is the class of object you want to search for.

In the class itself we define its alias:
@Searchable(alias = "com.agimatec.nucleus.persistence.model.DeliveryMachine")

I don't know if there are better ways to do it.
vam

Posts: 259
Registered: 1/2/07
Re: how to restrict search over one type of object
Posted: Jul 1, 2008 10:07 AM   in response to: Fabian Crabus in response to: Fabian Crabus
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Setting the alias to the boolean query does not limit the query to a subindex and messes up highlighting causing the alias to highlighted.

Shay provided this solution at one point:

query.setAliases(new String[]{"customer});
Fabian Crabus

Posts: 15
Registered: 11/13/05
Re: how to restrict search over one type of object
Posted: Jul 1, 2008 10:20 AM   in response to: vam in response to: vam
 
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Ha! That's better. Thanks :)
dsbs

Posts: 2
Registered: 7/1/08
Re: how to restrict search over one type of object
Posted: Jul 1, 2008 10:52 AM   in response to: Fabian Crabus in response to: Fabian Crabus
 
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Thanks Fabian and vam for your promptly reply

I'll try the solution

Best Regards
korbinian

Posts: 26
Registered: 6/21/07
Re: how to restrict search over one type of object
Posted: Jul 2, 2008 4:49 AM   in response to: dsbs in response to: dsbs
 
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why not use the

CompassQuery cq;
cq.setTypes(Class.. class)

method? - so you can say I want only classes cq.setTypes(CD.class, Book.class) searched;
factoryoutlet

Posts: 523
Registered: 10/5/11
Re: how to restrict search over one type of object
Posted: Oct 5, 2011 8:38 PM   in response to: dsbs in response to: dsbs
 
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Posts: 523
Registered: 10/5/11
Re: how to restrict search over one type of object
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Posts: 68
Registered: 10/31/11
Re: Many LJT files in temp directory
Posted: Oct 31, 2011 9:20 PM   in response to: dsbs in response to: dsbs
 
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Posts: 68
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Re: Many LJT files in temp directory
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Re: how to restrict search over one type of object
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