# FunctionScoreQueryBuilder.add() removed?

**URL:** https://discuss.elastic.co/t/functionscorequerybuilder-add-removed/101770
**Category:** Elasticsearch
**Created:** [September 26, 2017, 1:35am UTC](https://discuss.elastic.co/t/functionscorequerybuilder-add-removed/101770 "2017-09-26T01:35:11Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![sliu](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@sliu](https://discuss.elastic.co/u/sliu)
#### Post date: [September 26, 2017, 1:35am UTC](https://discuss.elastic.co/t/functionscorequerybuilder-add-removed/101770/1 "2017-09-26T01:35:11Z")

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I'm trying to implement function\_score in Java code. This

> <https://stackoverflow.com/questions/36589645/how-to-use-elasticsearch-functionscore-query-using-java-api>

  
is exactly what I'm looking for.  
This page also has similar examples: [https://www.programcreek.com/java-api-examples/index.php?api=org.elasticsearch.index.query.functionscore.FunctionScoreQueryBuilder](https://www.programcreek.com/java-api-examples/index.php?api=org.elasticsearch.index.query.functionscore.FunctionScoreQueryBuilder)

Problem is, apparently FunctionScoreQueryBuilder.add() has been removed since ElasticSearch 5.x. What should be used instead? Any code examples?

---

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### Author: ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 26, 2017, 1:50am UTC](https://discuss.elastic.co/t/functionscorequerybuilder-add-removed/101770/2 "2017-09-26T01:50:59Z")

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This may help:

[https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-compound-queries.html#java-query-dsl-function-score-query](https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-compound-queries.html#java-query-dsl-function-score-query)

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<div class="post-metadata">

### Author: ![sliu](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@sliu](https://discuss.elastic.co/u/sliu)
#### Post date: [September 28, 2017, 1:08pm UTC](https://discuss.elastic.co/t/functionscorequerybuilder-add-removed/101770/3 "2017-09-28T13:08:45Z")

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Thanks dadoonet. That's very helpful.

Add more example here that works for me:  
For functions  
"functions":[  
{  
"filter":{  
"match":{  
"my-data-field":{  
"query":"field-value"  
}  
}  
},  
"weight":3.0  
},  
{  
"gauss":{  
"my-date-field":{  
"scale":"360d",  
"offset":"90d",  
"decay":0.5  
}  
}  
}  
]  
The Java code:  
List functionBuilders = new ArrayList\<\>();  
MatchQueryBuilder matchQryBdlr = QueryBuilders.matchQuery("my-data-field", "field-value");  
WeightBuilder weightBdlr = ScoreFunctionBuilders.weightFactorFunction(3.0);  
functionBuilders.add(new FilterFunctionBuilder(matchQryBdlr, weightBdlr));

GaussDecayFunctionBuilder gaussBuilder = new GaussDecayFunctionBuilder("my-date-field", null, "360d", "90d", 0.5);  
functionBuilders.add(new FilterFunctionBuilder(gaussBuilder));

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 26, 2017, 1:09pm UTC](https://discuss.elastic.co/t/functionscorequerybuilder-add-removed/101770/4 "2017-10-26T13:09:11Z")

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