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Posted to dev@lucene.apache.org by "Nils Kaiser (Issue Comment Edited) (JIRA)" <ji...@apache.org> on 2012/04/20 18:24:40 UTC
[jira] [Issue Comment Edited] (SOLR-3385) Extended Dismax parser
ignores all regular search terms when one search term is using + (dismax
behaves differently)
[ https://issues.apache.org/jira/browse/SOLR-3385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13258354#comment-13258354 ]
Nils Kaiser edited comment on SOLR-3385 at 4/20/12 4:23 PM:
------------------------------------------------------------
Added explain queries for the cases explained in the description. Tried both dismax and edismax parser. the file name format is: select_[used search terms (PLUS means +)]_[dismax / edismax]_[number of results]results.xml
DISMAX:
As you can see, dismax behaves correctly (it always assumes a search term without a + behaves as if it had + specified).
"+sales" -> 9600 results
"dev +sales" -> 553 results
"dev +sales miau" -> 0 results (miau is not in index).
EDISMAX:
On the other hand, edismax parser ignores the terms that do not start with + if another term has + specified.
"+sales" -> 9600 results
"dev +sales" -> 9600 results
"dev +sales miau" -> 9600 results
"dev sales miau" -> 0 results (the bug only occurs if at least one search term uses + or -)
was (Author: nilskaiser):
Added explain queries for the cases explained in the description. Tried both dismax and edismax parser. the file name format is: select_[used search terms (PLUS means +)]_[dismax / edismax]_[number of results]results.xml
DISMAX:
As you can see, dismax behaves differently (it always assumes a search term without a + behaves as if it had + specified).
"+sales" -> 9600 results
"dev +sales" -> 553 results
"dev +sales miau" -> 0 results (miau is not in index).
EDISMAX:
On the other hand, edismax parser ignores the terms that do not start with + if another term has + specified.
"+sales" -> 9600 results
"dev +sales" -> 9600 results
"dev +sales miau" -> 9600 results
"dev sales miau" -> 0 results (the bug only occurs if at least one search term uses + or -)
> Extended Dismax parser ignores all regular search terms when one search term is using + (dismax behaves differently)
> --------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-3385
> URL: https://issues.apache.org/jira/browse/SOLR-3385
> Project: Solr
> Issue Type: Bug
> Components: query parsers
> Affects Versions: 3.5
> Reporter: Nils Kaiser
> Attachments: select_PLUSsales_dismax_9600results.xml, select_PLUSsales_edismax_9600results.xml, select_dev_PLUSsales_dismax_553results.xml, select_dev_PLUSsales_edismax_9600results.xml, select_dev_PLUSsales_miau_dismax_0results.xml, select_dev_PLUSsales_miau_edismax_9600results.xml, select_dev_sales_miau_edismax_0results.xml
>
>
> When using the extended dismax parser with at least one term using + or -, all other search terms are ignored.
> Example:
> (the terms dev and sales are found in the index, the term miau is not part of the index)
> "dev sales miau", "+dev +sales +miau", "dev +sales +miau" all give me 0 results (as expected)
> "dev +sales miau", "dev +sales" or "+sales" return the same number of results (dev and miau terms are ignored)
> The standard dismax parser always treats search terms as +, so "dev sales miau", "+dev +sales miau", "dev +sales miau" return the same number of results.
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