Oh thanks Alan that's a good suggestion, but I already wrote max and sum double values sources since it was easy enough. If you think that's a good approach I could post a patch.
On October 13, 2017 3:57:30 AM EDT, Alan Woodward <a...@flax.co.uk> wrote: >Hi, > >Yes, moving stuff over to DoubleValuesSource is only half done at the >moment, unfortunately! > >Can you use the expressions module to do what you want? The >SimpleBindings class allows you to map arbitrary DoubleValuesSource >objects to specific names, and then you can combine them using >javascript functions. > >Alan Woodward >www.flax.co.uk > > >> On 12 Oct 2017, at 23:25, Michael McCandless ><luc...@mikemccandless.com> wrote: >> >> Hi Mike, >> >> It looks like FunctionValues is a very old API used by many function >> queries, while DoubleValuesSource is relatively new (introduced in >> https://issues.apache.org/jira/browse/LUCENE-5325). >> >> This comment ( >> >https://issues.apache.org/jira/browse/LUCENE-5325?focusedCommentId=15235324&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15235324) >> on the issue seems to refer to wrapper classes to convert between the >old >> and new APIs? >> >> I admit the situation is rather confusing; but we've been gradually >working >> on cutting over modules to the new API. Patches welcome! >> >> Mike McCandless >> >> http://blog.mikemccandless.com >> >> On Tue, Oct 10, 2017 at 3:39 PM, Sokolov, Michael ><msoko...@gmail.com> >> wrote: >> >>> Hi, I'm trying to implement a complex set of values computed >according to >>> some externally-driven specification, so I am looking at these APIs. >My >>> question is whether there is any way to mix them. I have implemented >some >>> DoubleValuesSources and now I want combine them using sum, max, etc. >I >>> noticed these handy classes over in >o.a.l.queries.function.valuesource, >>> but they seem to be of a different flavor than the DVS API is >designed for. >>> EG DVS is kind of an iterative API while the functions appear to be >random >>> access (you pass them a docid). I could code up my own DVS for >functions >>> like max, sum and so on, but I wonder if there is some kind of >adapter, or >>> at least a reasonable strategy that would let one mix these apis? >>> >>> -Mike >>> >>> >>> >--------------------------------------------------------------------- >>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>> >>> -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
