[infinispan-issues] [JBoss JIRA] (ISPN-5414) Support (named) parameters in DSL based queries

[Adrian Nistor (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-5414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13096514#comment-13096514 ] 

Adrian Nistor commented on ISPN-5414:
-------------------------------------

The pull request is linked in the 'Git Pull Request' field of the jira.
The PR adds the named params feature but does not add a noticeable performance improvement because it currently cannot avoid re-parsing but due to a limitation in the HQL parser's way of supporting params. The HQL parser translates the HQL query into a lucene query and during this phase it also injects the current values of the parameters into the resulting lucene query. Lucene queries are immutable. So running a query with different param values requires re-parsing and re-translation. I'm trying to enhance the HQL parser to remove this limitation until the 8.0 final release but cannot promise it will happen. Worst case scenario, we'll have support for named params now but without a performance benefit in 8.0, hoping to solve that in 8.1. or 8.2.

> Support (named) parameters in DSL based queries
> -----------------------------------------------
>
>                 Key: ISPN-5414
>                 URL: https://issues.jboss.org/browse/ISPN-5414
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Remote Querying
>    Affects Versions: 8.0.0.Final
>            Reporter: Adrian Nistor
>            Assignee: Adrian Nistor
>             Fix For: 8.0.0.Final
>
>




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