Hi Ramzi,
Thank you but I am not sure to understand well your answer. In your
example, I suppose that the indexed docs are flattened. If I want an AND
query instead of an OR query (let say, for example 'chapter_title:Lucene
AND chapter_content:fun'), how can I be sure that the terms "Lucene" and
"fun" will be matched in the same chapter of the book? (since in this
case chapter_content and chapter_title are multivalued fields)?
Regards,
Aurélien
On 21.10.2014 19:59, Ramzi Alqrainy wrote:
I think if I have your question right, You can use multiple custom
query
syntax. You explicitly specify an alternative query parser such as
DisMax or
eDisMax, you're using the standard Lucene query parser by default.
In your case, I think I can solve it by using this query
chapter_title:Introduction ( chapter_title:Lucene OR
chapter_content:fun )
Here are some query examples demonstrating the query syntax.
*Keyword matching*
Search for word "foo" in the title field.
title:foo
Search for phrase "foo bar" in the title field.
title:"foo bar"
Search for phrase "foo bar" in the title field AND the phrase "quick
fox" in
the body field.
title:"foo bar" AND body:"quick fox"
Search for either the phrase "foo bar" in the title field AND the
phrase
"quick fox" in the body field, or the word "fox" in the title field.
(title:"foo bar" AND body:"quick fox") OR title:fox
Search for word "foo" and not "bar" in the title field.
title:foo -title:bar
*Wildcard matching*
Search for any word that starts with "foo" in the title field.
title:foo*
Search for any word that starts with "foo" and ends with bar in the
title
field.
title:foo*bar
Note that Lucene doesn't support using a * symbol as the first
character of
a search.
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Hi,
I have question regarding nested document queries:
For example, let’s say that I have the following book:
Book _title: Nested document for dummies
Chapter1_Title: Introduction
Chapter1_Content: Nested documents are fun.
Chapter2_Title: Which technology should I use?
Chapter2_Content: Lucene of course!
First I want to find books that contain an introduction and that are
about Lucene. So I decide to flatten my data and use 3 multivalued
fields
(Book_Title,Chapter_Title and Chapter_Content), I index my document and
then I get what I want when I use the following query : “
chapter_title:Introduction AND chapter_title:Lucene “
Now I want to find books that contain “fun” in a chapter called
“introduction”. My model is no more valid (Chapter2_content is no more
linked with Chapter2_title). That is why I change my datamodel and use
nested documents:
I have now a parent with a single valued field Book_title and different
childs with single valued fields Chapter_title and Chapter_Content. Now,
when I run the query “chapter_title: Introduction AND
chapter_content:fun”
I also get what I want… But what do I have to do if I want to use these
two
kinds of query with a unique data model?
Thank you,
Regards,
Aurélien MAZOYER
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