46 lines
1.2 KiB
Plaintext
46 lines
1.2 KiB
Plaintext
[[query-dsl-custom-score-query]]
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=== Custom Score Query
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deprecated[0.90.4,Replaced by <<query-dsl-function-score-query>>]
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`custom_score` query allows to wrap another query and customize the
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scoring of it optionally with a computation derived from other field
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values in the doc (numeric ones) using
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<<modules-scripting,script expression>>. Here is
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a simple sample:
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[source,js]
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--------------------------------------------------
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"custom_score" : {
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"query" : {
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....
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},
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"script" : "_score * doc['my_numeric_field'].value"
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}
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--------------------------------------------------
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On top of the different scripting field values and expression, the
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`_score` script parameter can be used to retrieve the score based on the
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wrapped query.
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[float]
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==== Script Parameters
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Scripts are cached for faster execution. If the script has parameters
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that it needs to take into account, it is preferable to use the same
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script, and provide parameters to it:
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[source,js]
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--------------------------------------------------
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"custom_score" : {
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"query" : {
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....
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},
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"params" : {
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"param1" : 2,
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"param2" : 3.1
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},
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"script" : "_score * doc['my_numeric_field'].value / pow(param1, param2)"
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}
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--------------------------------------------------
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