QueryableIndex (druid-processing 28.0.1 API)

All Superinterfaces:

AutoCloseable, Closeable, ColumnInspector, Expr.InputBindingInspector

All Known Implementing Classes:

FrameQueryableIndex, SimpleQueryableIndex
```
public interface QueryableIndex
extends Closeable, ColumnInspector
```
Direct interface to memory mapped segments. Not a public API for extensions; site specific queries should be using StorageAdapter.

See Also:

for query path adapter, for indexing path adapter

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`close()`	The close method shouldn't actually be here as this is nasty.
`Indexed<String>`	`getAvailableDimensions()`
`BitmapFactory`	`getBitmapFactoryForDimensions()`
`default ColumnCapabilities`	`getColumnCapabilities(String column)`	Returns capabilities of a particular column.
`ColumnHolder`	`getColumnHolder(String columnName)`
`List<String>`	`getColumnNames()`
`org.joda.time.Interval`	`getDataInterval()`
`Map<String,DimensionHandler>`	`getDimensionHandlers()`
`Metadata`	`getMetadata()`
`int`	`getNumRows()`

Methods inherited from interface org.apache.druid.segment.ColumnInspector
getColumnCapabilitiesWithDefault, getType

Methods inherited from interface org.apache.druid.math.expr.Expr.InputBindingInspector
areNumeric, areNumeric, areSameTypes, areSameTypes, areScalar, areScalar, canVectorize, canVectorize

- Method Detail
  - getDataInterval
```
org.joda.time.Interval getDataInterval()
```
  - getNumRows
```
int getNumRows()
```
  - getAvailableDimensions
```
Indexed<String> getAvailableDimensions()
```
  - getBitmapFactoryForDimensions
```
BitmapFactory getBitmapFactoryForDimensions()
```
  - getMetadata
```
@Nullable
Metadata getMetadata()
```
  - getDimensionHandlers
```
Map<String,DimensionHandler> getDimensionHandlers()
```
  - getColumnNames
```
List<String> getColumnNames()
```
  - getColumnHolder
```
@Nullable
ColumnHolder getColumnHolder(String columnName)
```
  - getColumnCapabilities
```
@Nullable
default ColumnCapabilities getColumnCapabilities(String column)
```
    Description copied from interface: ColumnInspector
    
    Returns capabilities of a particular column.
    
    Specified by:
    
    getColumnCapabilities in interface ColumnInspector
    
    Parameters:
    
    column - column name
    
    Returns:
    
    capabilities, or null
  - close
```
void close()
```
    The close method shouldn't actually be here as this is nasty. We will adjust it in the future.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable
    
    Throws:
    
    IOException - if an exception was thrown closing the index