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feat(native): Add dummy signature for cosine_similarity on Array(Real) #26555

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feat(native): Add dummy signature for cosine_similarity on Array(Real) #26555

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12 changes: 11 additions & 1 deletion presto-main-base/src/main/java/com/facebook/presto/operator/scalar/MathFunctions.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1651,7 +1651,7 @@ public static Double mapCosineSimilarity(@SqlType("map(varchar,double)") Block l
@ScalarFunction("cosine_similarity")
@SqlNullable
@SqlType(StandardTypes.DOUBLE)
public static Double arrayCosineSimilarity(@SqlType("array(double)") Block leftArray, @SqlType("array(double)") Block rightArray)
public static Double arrayCosineSimilarityDouble(@SqlType("array(double)") Block leftArray, @SqlType("array(double)") Block rightArray)
{
checkCondition(
leftArray.getPositionCount() == rightArray.getPositionCount(),
Expand All @@ -1675,6 +1675,16 @@ public static Double arrayCosineSimilarity(@SqlType("array(double)") Block leftA
return dotProduct / (normLeftArray * normRightArray);
}

@Description("cosine similarity between the given identical sized vectors represented as arrays")
@ScalarFunction("cosine_similarity")
@SqlNullable
@SqlType(StandardTypes.REAL)
public static Long arrayCosineSimilarityReal(@SqlType("array(real)") Block leftArray, @SqlType("array(real)") Block rightArray)
{
throw new PrestoException(INVALID_FUNCTION_ARGUMENT,
"This is a dummy Java UDF signature. The actual implementation is in C++ and available in Prestissimo.");
}

@Description("squared Euclidean distance between the given identical sized vectors represented as arrays")
@ScalarFunction("l2_squared")
@SqlType(StandardTypes.REAL)
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