org.apache.druid.segment.vector

Interface VectorValueSelector

All Superinterfaces:

VectorSizeInspector

All Known Implementing Classes:

BaseDoubleVectorValueSelector, BaseFloatVectorValueSelector, BaseLongVectorValueSelector, NilVectorSelector

public interface VectorValueSelector
extends VectorSizeInspector

Vectorized selector for primitive columns.

See Also:

org.apache.druid.segment.ColumnValueSelector, the non-vectorized version.

Method Summary

Modifier and Type	Method and Description
double[]	getDoubleVector() Get the current vector, casting to doubles as necessary.
float[]	getFloatVector() Get the current vector, casting to floats as necessary.
long[]	getLongVector() Get the current vector, casting to longs as necessary.
boolean[]	getNullVector() Gets a vector of booleans signifying which rows are null and which are not (true for null).

Methods inherited from interface org.apache.druid.segment.vector.VectorSizeInspector

getCurrentVectorSize, getMaxVectorSize

Method Detail

getLongVector

long[] getLongVector()

Get the current vector, casting to longs as necessary. The array will be reused, so it is not a good idea to retain a reference to it.

getFloatVector

float[] getFloatVector()

Get the current vector, casting to floats as necessary. The array will be reused, so it is not a good idea to retain a reference to it.

getDoubleVector

double[] getDoubleVector()

Get the current vector, casting to doubles as necessary. The array will be reused, so it is not a good idea to retain a reference to it.

getNullVector

@Nullable
boolean[] getNullVector()

Gets a vector of booleans signifying which rows are null and which are not (true for null). Returns null if it is known that there are no nulls in the vector, possibly because the column is non-nullable.