ReadableVectorInspector (druid-processing 28.0.1 API)

All Superinterfaces:

VectorSizeInspector

All Known Subinterfaces:

ReadableVectorOffset, VectorOffset

All Known Implementing Classes:

BitmapVectorOffset, FilteredVectorOffset, NoFilterVectorOffset
```
public interface ReadableVectorInspector
extends VectorSizeInspector
```
Vector inspector that can supply a unique identifier of the vector to use with caching in addition to sizing information

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static int NULL_ID
  A marker value that will never be returned by "getId".
- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  int getId()
  Returns an integer that uniquely identifies the current vector.
  - Methods inherited from interface org.apache.druid.segment.vector.VectorSizeInspector
    getCurrentVectorSize, getMaxVectorSize

- Field Detail
  - NULL_ID
```
static final int NULL_ID
```
    A marker value that will never be returned by "getId".
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getId
```
int getId()
```
    Returns an integer that uniquely identifies the current vector. This is useful for caching: it is safe to assume nothing has changed in the vector so long as the id remains the same.