Package org.apache.druid.segment.index

Class IndexedUtf8ValueIndexes<TDictionary extends Indexed<ByteBuffer>>

java.lang.Object

org.apache.druid.segment.index.IndexedUtf8ValueIndexes<TDictionary>

All Implemented Interfaces:

StringValueSetIndexes, Utf8ValueSetIndexes, ValueIndexes

public final class IndexedUtf8ValueIndexes<TDictionary extends Indexed<ByteBuffer>>
extends Object
implements StringValueSetIndexes, Utf8ValueSetIndexes, ValueIndexes

Constructor Summary

Constructors

Constructor	Description
IndexedUtf8ValueIndexes(BitmapFactory bitmapFactory, TDictionary dictionary, Indexed<ImmutableBitmap> bitmaps)

Method Summary

Modifier and Type	Method	Description
BitmapColumnIndex	forSortedValues(SortedSet<String> values)	Get an Iterable of ImmutableBitmap corresponding to the specified set of values (if they are contained in the underlying column).
BitmapColumnIndex	forSortedValuesUtf8(SortedSet<ByteBuffer> valuesUtf8)	Get an Iterable of ImmutableBitmap corresponding to the specified set of values (if they are contained in the underlying column).
BitmapColumnIndex	forValue(Object value, TypeSignature<ValueType> valueType)	Get the ImmutableBitmap corresponding to rows matching the supplied value.
BitmapColumnIndex	forValue(String value)	Get the ImmutableBitmap corresponding to the supplied value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IndexedUtf8ValueIndexes

public IndexedUtf8ValueIndexes(BitmapFactory bitmapFactory,
                               TDictionary dictionary,
                               Indexed<ImmutableBitmap> bitmaps)

Method Detail

forValue

public BitmapColumnIndex forValue(@Nullable
                                  String value)

Description copied from interface: StringValueSetIndexes

Get the ImmutableBitmap corresponding to the supplied value. Generates an empty bitmap when passed a value that doesn't exist. Never returns null.

Specified by:

forValue in interface StringValueSetIndexes

forValue

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

Description copied from interface: ValueIndexes

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.

Specified by:

forValue in interface ValueIndexes

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

forSortedValues

public BitmapColumnIndex forSortedValues(SortedSet<String> values)

Description copied from interface: StringValueSetIndexes

Get an Iterable of ImmutableBitmap corresponding to the specified set of values (if they are contained in the underlying column). The set must be sorted using Comparators.naturalNullsFirst().

Specified by:

forSortedValues in interface StringValueSetIndexes

forSortedValuesUtf8

public BitmapColumnIndex forSortedValuesUtf8(SortedSet<ByteBuffer> valuesUtf8)

Description copied from interface: Utf8ValueSetIndexes

Get an Iterable of ImmutableBitmap corresponding to the specified set of values (if they are contained in the underlying column). The set must be sorted using ByteBufferUtils.utf8Comparator().

Specified by:

forSortedValuesUtf8 in interface Utf8ValueSetIndexes