Examples with AggregationFunction com.facebook.presto.spi.function.AggregationFunction used on opensource projects

Example 6 with AggregationFunction

use of com.facebook.presto.spi.function.AggregationFunction in project presto by prestodb.

the class AggregationFromAnnotationsParser method getNames.

private static List<String> getNames(@Nullable AnnotatedElement outputFunction, AggregationFunction aggregationAnnotation) {
    List<String> defaultNames = ImmutableList.<String>builder().add(aggregationAnnotation.value()).addAll(Arrays.asList(aggregationAnnotation.alias())).build();
    if (outputFunction == null) {
        return defaultNames;
    }
    AggregationFunction annotation = outputFunction.getAnnotation(AggregationFunction.class);
    if (annotation == null) {
        return defaultNames;
    } else {
        return ImmutableList.<String>builder().add(annotation.value()).addAll(Arrays.asList(annotation.alias())).build();
    }
}