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Posted to dev@lucene.apache.org by "Modassar Ather (JIRA)" <ji...@apache.org> on 2014/11/18 12:59:34 UTC
[jira] [Comment Edited] (LUCENE-5205) [PATCH] SpanQueryParser with
recursion, analysis and syntax very similar to classic QueryParser
[ https://issues.apache.org/jira/browse/LUCENE-5205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14216113#comment-14216113 ]
Modassar Ather edited comment on LUCENE-5205 at 11/18/14 11:59 AM:
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I am trying following queries and facing an issue for which need your suggestions. The environment is 4 shard cluster with embedded zookeeper on one of them.
q=field: ("SEARCH TOOLS PROVIDER & CONSULTING COMPANY") Gets transformed to following:
+spanNear([field:search, field:tools, field:provider, field:, field:consulting, field:company], 0, true)
field: ("SEARCH TOOL'S PROVIDER'S AND CONSULTING COMPANY") Gets transformed to following:
+spanNear([field:search, spanNear([field:s, field:provider], 0, true), field:s, field:and, field:consulting, field:company], 0, true)
field: ("SEARCH TOOL'S SOLUTION PROVIDER TECHNOLOGY CO., LTD.") Gets stuck and does not return. We have set query timeAllowed to 5 minutes but it seems that it is not reaching here and continues.
During debug I found that it gets stuck at m.find(), Line 154 of SpanQueryLexer after it has created token for double quotes and term SEARCH.
Whereas the above query without (') gets transformed to following
field: ("SEARCH TOOLS SOLUTION PROVIDER TECHNOLOGY CO., LTD.") => +spanNear([field:search, field:tools, field:solution, field:provider, field:technology, field:co, field:ltd], 0, true)
Need your help in understanding if I am not using the query properly or it can be an issue.
was (Author: modassar):
I am trying following queries and facing an issue for which need your suggestions. The environment is 4 shard cluster with embedded zookeeper on one of them.
q=field:("SEARCH TOOLS PROVIDER & CONSULTING COMPANY") Gets transformed to following:
+spanNear([field:search, field:tools, field:provider, field:, field:consulting, field:company], 0, true)
field:("SEARCH TOOL'S PROVIDER'S AND CONSULTING COMPANY") Gets transformed to following:
+spanNear([field:search, spanNear([field:s, field:provider], 0, true), field:s, field:and, field:consulting, field:company], 0, true)
field:("SEARCH TOOL'S SOLUTION PROVIDER TECHNOLOGY CO., LTD.") Gets stuck and does not return. We have set query timeAllowed to 5 minutes but it seems that it is not reaching here and continues.
During debug I found that it gets stuck at m.find(), Line 154 of SpanQueryLexer after it has created token for double quotes and term SEARCH.
Whereas the above query without (') gets transformed to following
field:("SEARCH TOOLS SOLUTION PROVIDER TECHNOLOGY CO., LTD.") => +spanNear([field:search, field:tools, field:solution, field:provider, field:technology, field:co, field:ltd], 0, true)
Need your help in understanding if I am not using the query properly or it can be an issue.
> [PATCH] SpanQueryParser with recursion, analysis and syntax very similar to classic QueryParser
> -----------------------------------------------------------------------------------------------
>
> Key: LUCENE-5205
> URL: https://issues.apache.org/jira/browse/LUCENE-5205
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/queryparser
> Reporter: Tim Allison
> Labels: patch
> Fix For: 4.9
>
> Attachments: LUCENE-5205-cleanup-tests.patch, LUCENE-5205-date-pkg-prvt.patch, LUCENE-5205.patch.gz, LUCENE-5205.patch.gz, LUCENE-5205_dateTestReInitPkgPrvt.patch, LUCENE-5205_improve_stop_word_handling.patch, LUCENE-5205_smallTestMods.patch, LUCENE_5205.patch, SpanQueryParser_v1.patch.gz, patch.txt
>
>
> This parser extends QueryParserBase and includes functionality from:
> * Classic QueryParser: most of its syntax
> * SurroundQueryParser: recursive parsing for "near" and "not" clauses.
> * ComplexPhraseQueryParser: can handle "near" queries that include multiterms (wildcard, fuzzy, regex, prefix),
> * AnalyzingQueryParser: has an option to analyze multiterms.
> At a high level, there's a first pass BooleanQuery/field parser and then a span query parser handles all terminal nodes and phrases.
> Same as classic syntax:
> * term: test
> * fuzzy: roam~0.8, roam~2
> * wildcard: te?t, test*, t*st
> * regex: /\[mb\]oat/
> * phrase: "jakarta apache"
> * phrase with slop: "jakarta apache"~3
> * default "or" clause: jakarta apache
> * grouping "or" clause: (jakarta apache)
> * boolean and +/-: (lucene OR apache) NOT jakarta; +lucene +apache -jakarta
> * multiple fields: title:lucene author:hatcher
>
> Main additions in SpanQueryParser syntax vs. classic syntax:
> * Can require "in order" for phrases with slop with the \~> operator: "jakarta apache"\~>3
> * Can specify "not near": "fever bieber"!\~3,10 ::
> find "fever" but not if "bieber" appears within 3 words before or 10 words after it.
> * Fully recursive phrasal queries with \[ and \]; as in: \[\[jakarta apache\]~3 lucene\]\~>4 ::
> find "jakarta" within 3 words of "apache", and that hit has to be within four words before "lucene"
> * Can also use \[\] for single level phrasal queries instead of " as in: \[jakarta apache\]
> * Can use "or grouping" clauses in phrasal queries: "apache (lucene solr)"\~3 :: find "apache" and then either "lucene" or "solr" within three words.
> * Can use multiterms in phrasal queries: "jakarta\~1 ap*che"\~2
> * Did I mention full recursion: \[\[jakarta\~1 ap*che\]\~2 (solr~ /l\[ou\]\+\[cs\]\[en\]\+/)]\~10 :: Find something like "jakarta" within two words of "ap*che" and that hit has to be within ten words of something like "solr" or that "lucene" regex.
> * Can require at least x number of hits at boolean level: "apache AND (lucene solr tika)~2
> * Can use negative only query: -jakarta :: Find all docs that don't contain "jakarta"
> * Can use an edit distance > 2 for fuzzy query via SlowFuzzyQuery (beware of potential performance issues!).
> Trivial additions:
> * Can specify prefix length in fuzzy queries: jakarta~1,2 (edit distance =1, prefix =2)
> * Can specifiy Optimal String Alignment (OSA) vs Levenshtein for distance <=2: (jakarta~1 (OSA) vs jakarta~>1(Levenshtein)
> This parser can be very useful for concordance tasks (see also LUCENE-5317 and LUCENE-5318) and for analytical search.
> Until LUCENE-2878 is closed, this might have a use for fans of SpanQuery.
> Most of the documentation is in the javadoc for SpanQueryParser.
> Any and all feedback is welcome. Thank you.
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