org.apache.druid.segment.index.semantic

Interface ValueIndexes

All Known Implementing Classes:

IndexedUtf8ValueIndexes

public interface ValueIndexes

Method Summary

Modifier and Type	Method and Description
BitmapColumnIndex	forValue(Object value, TypeSignature<ValueType> valueType) Get the ImmutableBitmap corresponding to rows matching the supplied value.

Method Detail

forValue

@Nullable
BitmapColumnIndex forValue(@Nonnull
                                     Object value,
                                     TypeSignature<ValueType> valueType)

Get the ImmutableBitmap corresponding to rows matching the supplied value. Generates an empty bitmap when passed a value that doesn't exist. May return null if a value index cannot be computed for the supplied value type. Does not match null, use NullValueIndex for matching nulls.

Parameters:

value - value to match

valueType - type of the value to match, used to assist conversion from the match value type to the column value type

Returns:

ImmutableBitmap corresponding to the rows which match the value, or null if an index connot be computed for the supplied value type