# Accessing doc score in a native (Java) script **URL:** \ **Category:** Elasticsearch\ **Created:** [November 27, 2012, 10:17pm UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853 "2012-11-27T22:17:55Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Ryan\_Hill](https://avatars.discourse-cdn.com/v4/letter/r/9de0a6/32.png) [@Ryan\_Hill](https://discuss.elastic.co/u/Ryan_Hill)\ **Post date:** [November 27, 2012, 10:17pm UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/1 "2012-11-27T22:17:55Z")
It seems that under normal search conditions, that calling doc().score() from a Java script will result in an uncaught exception (since the scorer is null). For instance, a simple query on the twitter example data: '{ "query": {"text": {"message":"elastic"}}, "script\_fields": {}} The above executes without an error until I attempt to access the score. When handling the exception myself, the '\_score' and 'max\_score' fields have the expected values in the response. Any advice would be most appreciated. Cheers, -R -- ---
**Author:** ![Igor\_Motov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/igor_motov/32/45193_2.png) [@Igor\_Motov](https://discuss.elastic.co/u/Igor_Motov)\ **Post date:** [November 29, 2012, 12:04am UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/2 "2012-11-29T00:04:36Z")
The script\_field is executed during fetch phase when scorer is not longer used (it already performed its function during search phase). But why do you need score in the script\_field? On Tuesday, November 27, 2012 5:17:55 PM UTC-5, Ryan Hill wrote: > It seems that under normal search conditions, that calling doc().score() > from a Java script will result in an uncaught exception (since the scorer > is null). > > For instance, a simple query on the twitter example data: > '{ "query": {"text": {"message":"elastic"}}, "script\_fields": {}} > > The above executes without an error until I attempt to access the score. > When handling the exception myself, the '\_score' and 'max\_score' fields > have the expected values in the response. > > Any advice would be most appreciated. > > Cheers, > -R -- ---
**Author:** ![Klaus\_Brunner](https://avatars.discourse-cdn.com/v4/letter/k/9fc29f/32.png) [@Klaus\_Brunner](https://discuss.elastic.co/u/Klaus_Brunner)\ **Post date:** [January 29, 2013, 9:43am UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/3 "2013-01-29T09:43:05Z")
Sorry for resurrecting an old thread, but we currently have exactly the same issue. In a Java script derived from Abstract\*SearchScript, we need to calculate a field based on (among other things) the score as calculated by ES. I understand that the scorer is null because it's no longer needed, but isn't there any other way to get the score that was calculated by it earlier? Thanks Klaus On Thursday, 29 November 2012 01:04:36 UTC+1, Igor Motov wrote: > The script\_field is executed during fetch phase when scorer is not longer > used (it already performed its function during search phase). But why do > you need score in the script\_field? > > On Tuesday, November 27, 2012 5:17:55 PM UTC-5, Ryan Hill wrote: > > > It seems that under normal search conditions, that calling doc().score() > > from a Java script will result in an uncaught exception (since the scorer > > is null). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![egaumer](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/egaumer/32/2365_2.png) [@egaumer](https://discuss.elastic.co/u/egaumer)\ **Post date:** [January 29, 2013, 2:05pm UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/4 "2013-01-29T14:05:02Z")
Rather than calling doc().score() try calling score(). -Eric On Tuesday, January 29, 2013 4:43:05 AM UTC-5, Klaus Brunner wrote: > Sorry for resurrecting an old thread, but we currently have exactly the > same issue. In a Java script derived from Abstract\*SearchScript, we need to > calculate a field based on (among other things) the score as calculated by > ES. > > I understand that the scorer is null because it's no longer needed, but > isn't there any other way to get the score that was calculated by it > earlier? > > Thanks > > Klaus > > On Thursday, 29 November 2012 01:04:36 UTC+1, Igor Motov wrote: > > > The script\_field is executed during fetch phase when scorer is not longer > > used (it already performed its function during search phase). But why do > > you need score in the script\_field? > > > > On Tuesday, November 27, 2012 5:17:55 PM UTC-5, Ryan Hill wrote: > > > > > It seems that under normal search conditions, that calling doc().score() > > > from a Java script will result in an uncaught exception (since the scorer > > > is null). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Klaus\_Brunner](https://avatars.discourse-cdn.com/v4/letter/k/9fc29f/32.png) [@Klaus\_Brunner](https://discuss.elastic.co/u/Klaus_Brunner)\ **Post date:** [January 29, 2013, 2:38pm UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/5 "2013-01-29T14:38:44Z")
On Tuesday, 29 January 2013 15:05:02 UTC+1, egaumer wrote: > Rather than calling doc().score() try calling score(). We did. It's NaN, just the way the score field is initialised in AbstractSearchScript. Seems it's never touched. (We also set track\_scores=true, to make sure, even though we don't use sorting.) The query works and goes through. The script is called and works fine, except when we want it to read the score. We also tried switching explanations on and off, no effect. This is on 0.20.2, but from earlier testing 0.19.7 showed the same behaviour. Klaus -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![egaumer](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/egaumer/32/2365_2.png) [@egaumer](https://discuss.elastic.co/u/egaumer)\ **Post date:** [January 29, 2013, 3:05pm UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/6 "2013-01-29T15:05:59Z")
I have a native script in front of me that uses the score and works fine on 0.20.2 but digging deeper... [https://github.com/elasticsearch/elasticsearch/blob/master/src/main/java/org/elasticsearch/script/AbstractSearchScript.java#L47](https://github.com/elasticsearch/elasticsearch/blob/master/src/main/java/org/elasticsearch/script/AbstractSearchScript.java#L47) Seems like this only works if you're using a CustomScoreQuery (which I am). You should try wrapping your current query. On Tuesday, January 29, 2013 9:38:44 AM UTC-5, Klaus Brunner wrote: > On Tuesday, 29 January 2013 15:05:02 UTC+1, egaumer wrote: > > > Rather than calling doc().score() try calling score(). > > We did. It's NaN, just the way the score field is initialised in > AbstractSearchScript. Seems it's never touched. (We also set > track\_scores=true, to make sure, even though we don't use sorting.) > > The query works and goes through. The script is called and works fine, > except when we want it to read the score. We also tried switching > explanations on and off, no effect. > > This is on 0.20.2, but from earlier testing 0.19.7 showed the same > behaviour. > > Klaus -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Klaus\_Brunner](https://avatars.discourse-cdn.com/v4/letter/k/9fc29f/32.png) [@Klaus\_Brunner](https://discuss.elastic.co/u/Klaus_Brunner)\ **Post date:** [January 29, 2013, 3:19pm UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/7 "2013-01-29T15:19:10Z")
On Tuesday, 29 January 2013 16:05:59 UTC+1, egaumer wrote: > I have a native script in front of me that uses the score and works fine > on 0.20.2 but digging deeper... > > [https://github.com/elasticsearch/elasticsearch/blob/master/src/main/java/org/elasticsearch/script/AbstractSearchScript.java#L47](https://github.com/elasticsearch/elasticsearch/blob/master/src/main/java/org/elasticsearch/script/AbstractSearchScript.java#L47) > > Seems like this only works if you're using a CustomScoreQuery (which I > am). You should try wrapping your current query. > > > We're using a script\_field, just like the OP. The problem is that we don't want to change the score, but to set a new field based on the score and other stuff. This doesn't seem to work from a CustomScoreQuery, but from a script\_field it does. However, it seems that the score is never set when running a script as part of a script\_field... So, actually I'm looking for either - a way to get the score in a Java script called from a script\_field, or - a way to set a field from a Java script called from a CustomScoreQuery. Klaus -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Klaus\_Brunner](https://avatars.discourse-cdn.com/v4/letter/k/9fc29f/32.png) [@Klaus\_Brunner](https://discuss.elastic.co/u/Klaus_Brunner)\ **Post date:** [February 6, 2013, 9:11am UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/8 "2013-02-06T09:11:46Z")
After some digging in the code, it seems that our application will definitely require a CustomScoreQuery: we're calculating a new score based on the "original" score and some other stuff. And it makes sense to actually sort on this new score. However, we still need a way to get at the original score from the query wrapped by the CustomScoreQuery. My best guess so far is using the explain option, but that seems like overkill: we don't need the detailed info on all queries below, and it seems that explain will slow things down significantly. All we need is that one additional "original score" field for each returned hit. Are there any other clever ideas on getting this value out? Thanks Klaus -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:52am UTC](https://discuss.elastic.co/t/accessing-doc-score-in-a-native-java-script/9853/9 "2017-07-06T02:52:48Z")