[ https://issues.apache.org/jira/browse/JENA-1645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16713073#comment-16713073 ]
ASF subversion and git services commented on JENA-1645: ------------------------------------------------------- Commit 82121f9c52f4aac03d2121931326754d108938b2 in jena's branch refs/heads/master from [~code-ferret] [ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=82121f9 ] JENA-1645: This closes #503. > Poor performance with full text search (Lucene) > ----------------------------------------------- > > Key: JENA-1645 > URL: https://issues.apache.org/jira/browse/JENA-1645 > Project: Apache Jena > Issue Type: Question > Components: Jena > Affects Versions: Jena 3.9.0 > Reporter: Vasyl Danyliuk > Priority: Major > Fix For: Jena 3.10.0 > > > Situation: half of a million of an indexed by Lucene documents(emails > actually), searching for emails by sender/receiver and some text. > If to put text filter in the start of SPARQL query it executes once but in a > case of very common words here are a lot of results(100 000+) that leads to > poor performance, limiting results count may and up with missed results. > If to put text search as the last condition it executes once per each already > found subject. That's completely OK but text search completely ignores > subject URI. > I found two methods in TextQueryPF class: variableSubject(...) for the first > case, and concreteSubject(...) for the second one. > The question is: why can't subject URI be used as a constraint in the text > search? -- This message was sent by Atlassian JIRA (v7.6.3#76005)