DictionaryEncodedValueIndex (druid-processing 30.0.1 API)

All Known Subinterfaces:

DictionaryEncodedStringValueIndex

All Known Implementing Classes:

IndexedStringDictionaryEncodedStringValueIndex
```
public interface DictionaryEncodedValueIndex<T>
```
This exposes a 'raw' view into bitmap value indexes for DictionaryEncodedColumn. This allows callers to directly retrieve bitmaps via dictionary ids. This interface should only be used when it is beneficial to operate in such a manner; callers of this class must either already know what value the dictionary id represents, not care at all, or have some other means to know exactly which bitmaps to retrieve. Most filter implementations should likely be using higher level index instead, such as StringValueSetIndexes, LexicographicalRangeIndexes, NumericRangeIndexes, or DruidPredicateIndexes.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ImmutableBitmap`	`getBitmap(int idx)`	Get the `ImmutableBitmap` for dictionary id of the underlying dictionary
`BitmapFactory`	`getBitmapFactory()`
`int`	`getCardinality()`	Get the cardinality of the underlying value dictionary
`T`	`getValue(int index)`	Get the value in the underlying value dictionary of the specified dictionary id

- Method Detail
  - getBitmap
```
ImmutableBitmap getBitmap(int idx)
```
    Get the ImmutableBitmap for dictionary id of the underlying dictionary
  - getCardinality
```
int getCardinality()
```
    Get the cardinality of the underlying value dictionary
  - getValue
```
@Nullable
T getValue(int index)
```
    Get the value in the underlying value dictionary of the specified dictionary id
  - getBitmapFactory
```
BitmapFactory getBitmapFactory()
```