public final class UInt4Vector extends BaseDataValueVector implements FixedWidthVector
Modifier and Type | Class and Description |
---|---|
class |
UInt4Vector.Accessor |
class |
UInt4Vector.Mutator
UInt4.Mutator implements a mutable vector of fixed width values.
|
BaseValueVector.BaseAccessor, BaseValueVector.BaseMutator
Modifier and Type | Field and Description |
---|---|
static int |
TYPE_WIDTH |
data
allocator, INITIAL_VALUE_ALLOCATION, MAX_ALLOCATION_SIZE, MAX_ALLOCATION_SIZE_PROPERTY, name
Constructor and Description |
---|
UInt4Vector(String name,
BufferAllocator allocator) |
Modifier and Type | Method and Description |
---|---|
void |
allocateNew()
Allocate new buffers.
|
void |
allocateNew(int valueCount)
Allocate a new buffer that supports setting at least the provided number of values.
|
boolean |
allocateNewSafe()
Allocates new buffers.
|
void |
copyFrom(int fromIndex,
int thisIndex,
UInt4Vector from) |
void |
copyFromSafe(int fromIndex,
int thisIndex,
UInt4Vector from) |
void |
decrementAllocationMonitor() |
UInt4Vector.Accessor |
getAccessor() |
int |
getBufferSizeFor(int valueCount)
Returns the number of bytes that is used by this vector if it holds the given number
of values.
|
Field |
getField()
Get information about how this field is materialized.
|
Types.MinorType |
getMinorType() |
UInt4Vector.Mutator |
getMutator() |
FieldReader |
getReader() |
TransferPair |
getTransferPair(BufferAllocator allocator)
to transfer quota responsibility
|
TransferPair |
getTransferPair(String ref,
BufferAllocator allocator) |
int |
getValueCapacity()
Returns the maximum number of values that can be stored in this vector instance.
|
TransferPair |
makeTransferPair(ValueVector to)
makes a new transfer pair used to transfer underlying buffers
|
void |
reAlloc()
Allocate new buffer with double capacity, and copy data into the new buffer.
|
void |
reset()
This method has a similar effect of allocateNew() without actually clearing and reallocating
the value vector.
|
void |
setInitialCapacity(int valueCount)
Set the initial record capacity
|
void |
splitAndTransferTo(int startIndex,
int length,
UInt4Vector target) |
void |
transferTo(UInt4Vector target) |
void |
zeroVector()
Zero out the underlying buffer backing this vector.
|
clear, getBuffer, getBuffers, getBufferSize, getTransferPair, load, load, truncateBufferBasedOnSize, unLoad, unload
checkBufRefs, close, getAllocator, iterator, toString
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
clear, close, getAllocator, getBuffers, getBufferSize, getTransferPair
forEach, iterator, spliterator
public static final int TYPE_WIDTH
public UInt4Vector(String name, BufferAllocator allocator)
public Types.MinorType getMinorType()
getMinorType
in interface ValueVector
public Field getField()
ValueVector
getField
in interface ValueVector
public FieldReader getReader()
getReader
in interface ValueVector
field reader
that supports reading values
from this vector.public int getBufferSizeFor(int valueCount)
ValueVector
getBufferSizeFor
in interface ValueVector
valueCount
- the number of values to assume this vector containspublic int getValueCapacity()
ValueVector
getValueCapacity
in interface ValueVector
public UInt4Vector.Accessor getAccessor()
getAccessor
in interface ValueVector
accessor
that is used to read from this vector
instance.public UInt4Vector.Mutator getMutator()
getMutator
in interface ValueVector
mutator
that is used to write to this vector
instance.public void setInitialCapacity(int valueCount)
ValueVector
setInitialCapacity
in interface ValueVector
valueCount
- the initial record capacity.public void allocateNew()
ValueVector
allocateNew
in interface ValueVector
public boolean allocateNewSafe()
ValueVector
allocateNewSafe
in interface ValueVector
public void allocateNew(int valueCount)
allocateNew
in interface FixedWidthVector
valueCount
- the number of values to allocate forOutOfMemoryException
- if it can't allocate the new bufferpublic void reset()
BaseDataValueVector
reset
in class BaseDataValueVector
public void reAlloc()
reAlloc
in interface ValueVector
OutOfMemoryException
- if it can't allocate the new bufferpublic void zeroVector()
zeroVector
in interface FixedWidthVector
public TransferPair getTransferPair(BufferAllocator allocator)
ValueVector
getTransferPair
in interface ValueVector
getTransferPair
in class BaseValueVector
allocator
- the target allocatortransfer pair
, creating a new target vector of
the same type.public TransferPair getTransferPair(String ref, BufferAllocator allocator)
getTransferPair
in interface ValueVector
public TransferPair makeTransferPair(ValueVector to)
ValueVector
makeTransferPair
in interface ValueVector
to
- the target for the transfertransfer pair
that is used to transfer underlying
buffers into the target vector.public void transferTo(UInt4Vector target)
public void splitAndTransferTo(int startIndex, int length, UInt4Vector target)
public void copyFrom(int fromIndex, int thisIndex, UInt4Vector from)
public void copyFromSafe(int fromIndex, int thisIndex, UInt4Vector from)
public void decrementAllocationMonitor()
Copyright © 2017 The Apache Software Foundation. All rights reserved.