Module org.apache.arrow.gandiva

Package org.apache.arrow.gandiva.evaluator

Class VectorExpander

java.lang.Object

org.apache.arrow.gandiva.evaluator.VectorExpander

public class VectorExpander
extends Object

This class provides the functionality to expand output vectors using a callback mechanism from gandiva.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	VectorExpander.ExpandResult	Result of vector expansion.

Constructor Summary

Constructors

Constructor	Description
VectorExpander(BaseVariableWidthVector[] vectors)

Method Summary

Modifier and Type	Method	Description
VectorExpander.ExpandResult	expandOutputVectorAtIndex(int index, long toCapacity)	Expand vector at specified index.

Methods inherited from class java.lang.Object

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

Constructor Details

VectorExpander

public VectorExpander(BaseVariableWidthVector[] vectors)

Method Details

expandOutputVectorAtIndex

public VectorExpander.ExpandResult expandOutputVectorAtIndex(int index,
 long toCapacity)

Expand vector at specified index. This is used as a back call from jni, and is only relevant for variable width vectors.

Parameters:

index - index of buffer in the list passed to jni.

toCapacity - the size to which the buffer should be expanded to.

Returns:

address and size of the buffer after expansion.