[ https://issues.apache.org/jira/browse/SOLR-8208?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mikhail Khludnev updated SOLR-8208: ----------------------------------- Attachment: SOLR-8208.patch I added a couple of assertions. I suppose the last [snippet|https://issues.apache.org/jira/browse/SOLR-8208?focusedCommentId=15063358&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15063358] makes much sense, just because scoring query parsers do [something| https://github.com/apache/lucene-solr/blob/trunk/solr/core/src/java/org/apache/solr/search/join/ScoreJoinQParserPlugin.java#L95] like this. > DocTransformer executes sub-queries > ----------------------------------- > > Key: SOLR-8208 > URL: https://issues.apache.org/jira/browse/SOLR-8208 > Project: Solr > Issue Type: Improvement > Reporter: Mikhail Khludnev > Labels: features, newbie > Attachments: SOLR-8208.patch, SOLR-8208.patch, SOLR-8208.patch > > > The initial idea was to return "from" side of query time join via > doctransformer. I suppose it isn't query-time join specific, thus let to > specify any query and parameters for them, let's call them sub-query. But it > might be problematic to escape subquery parameters, including local ones, > e.g. what if subquery needs to specify own doctransformer in &fl=\[..\] ? > I suppose we can allow to specify subquery parameter prefix: > {code} > ..&fl=id,[subquery paramPrefix=subq1. > fromIndex=othercore],score,..&subq1.q={!term f=child_id > v=$subq1.row.id}&subq1.rows=3&subq1.sort=price&.. > {code} > * {{paramPrefix=subq1.}} shifts parameters for subquery: {{subq1.q}} turns to > {{q}} for subquery, {{subq1.rows}} to {{rows}} > * {{fromIndex=othercore}} optional param allows to run subquery on other > core, like it works on query time join > * the itchiest one is to reference to document field from subquery > parameters, here I propose to use local param {{v}} and param deference > {{v=$param}} thus every document field implicitly introduces parameter for > subquery $\{paramPrefix\}row.$\{fieldName\}, thus above subquery is > q=child_id:<doc.getField("id")>, presumably we can drop "row." in the middle > (reducing to v=$subq1.id), until someone deal with {{rows}}, {{sort}} fields. > * \[subquery\], or \[query\], or ? > Caveat: it should be a way slow; it handles only search result page, not > entire result set. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org