Module org.apache.arrow.vector

Package org.apache.arrow.vector

Class ViewVarBinaryVector

java.lang.Object

org.apache.arrow.vector.BaseValueVector

org.apache.arrow.vector.BaseVariableWidthViewVector

org.apache.arrow.vector.ViewVarBinaryVector

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<ValueVector>, DensityAwareVector, ElementAddressableVector, FieldVector, ValueIterableVector<byte[]>, ValueVector, VariableWidthFieldVector, VariableWidthVector, VectorDefinitionSetter

public final class ViewVarBinaryVector
extends BaseVariableWidthViewVector
implements ValueIterableVector<byte[]>

ViewVarBinaryVector implements a variable width view vector of binary values which could be NULL. A validity buffer (bit vector) is maintained to track which elements in the vector are null.

Field Summary

Fields inherited from class org.apache.arrow.vector.BaseVariableWidthViewVector

BUF_INDEX_WIDTH, dataBuffers, ELEMENT_SIZE, EMPTY_BYTE_ARRAY, field, INITIAL_VIEW_VALUE_ALLOCATION, initialDataBufferSize, INLINE_SIZE, lastSet, LENGTH_WIDTH, PREFIX_WIDTH, validityBuffer, valueCount, viewBuffer

Fields inherited from class org.apache.arrow.vector.BaseValueVector

allocator, fieldReader, INITIAL_VALUE_ALLOCATION, MAX_ALLOCATION_SIZE, MAX_ALLOCATION_SIZE_PROPERTY

Constructor Summary

Constructors

Constructor	Description
ViewVarBinaryVector(String name, BufferAllocator allocator)	Instantiate a ViewVarBinaryVector.
ViewVarBinaryVector(String name, FieldType fieldType, BufferAllocator allocator)	Instantiate a ViewVarBinaryVector.
ViewVarBinaryVector(Field field, BufferAllocator allocator)	Instantiate a ViewVarBinaryVector.

Method Summary

Modifier and Type	Method	Description
byte[]	get(int index)	Get the variable length element at specified index as a byte array.
void	get(int index, NullableViewVarBinaryHolder holder)	Get the variable length element at specified index and sets the state in provided holder.
Types.MinorType	getMinorType()	Get a minor type for this vector.
byte[]	getObject(int index)	Get the variable length element at a specified index as a byte array.
protected FieldReader	getReaderImpl()	Each vector has a different reader that implements the FieldReader interface.
TransferPair	getTransferPair(String ref, BufferAllocator allocator)	Construct a TransferPair comprising this and a target vector of the same type.
TransferPair	getTransferPair(Field field, BufferAllocator allocator)	Construct a transfer pair of this vector and another vector of the same type.
TransferPair	makeTransferPair(ValueVector to)	Construct a TransferPair with a desired target vector of the same type.
void	read(int index, ReusableBuffer<?> buffer)	Read the value at the given position to the given output buffer.
void	set(int index, NullableViewVarBinaryHolder holder)	Set the variable length element at the specified index to the data buffer supplied in the holder.
void	set(int index, ViewVarBinaryHolder holder)	Set the variable length element at the specified index to the data buffer supplied in the holder.
void	setSafe(int index, NullableViewVarBinaryHolder holder)	Same as set(int, NullableViewVarBinaryHolder) except that it handles the case where index and length of a new element are beyond the existing capacity of the vector.
void	setSafe(int index, ViewVarBinaryHolder holder)	Same as set(int, ViewVarBinaryHolder) except that it handles the case where index and length of a new element are beyond the existing capacity of the vector.

Methods inherited from class org.apache.arrow.vector.BaseVariableWidthViewVector

accept, allocateNew, allocateNew, allocateNew, allocateNewSafe, allocateOrGetLastDataBuffer, clear, clearDataBuffers, close, copyFrom, copyFromSafe, exportCDataBuffers, fillEmpties, getBuffers, getBufferSize, getBufferSizeFor, getByteCapacity, getChildrenFromFields, getData, getData, getDataBuffer, getDataBufferAddress, getDataBuffers, getDataPointer, getDataPointer, getDensity, getExportedCDataBufferCount, getField, getFieldBuffers, getFieldInnerVectors, getLastSet, getName, getNullCount, getOffsetBuffer, getOffsetBufferAddress, getTotalValueLengthUpToIndex, getTransferPair, getTransferPair, getTransferPair, getValidityBuffer, getValidityBufferAddress, getValueCapacity, getValueCount, getValueLength, handleSafe, hashCode, hashCode, initializeChildrenFromFields, isNull, isSafe, isSet, loadFieldBuffers, reAlloc, reallocValidityBuffer, reallocViewBuffer, reallocViewBuffer, reallocViewDataBuffer, reallocViewDataBuffer, reset, set, set, set, set, set, setBytes, setBytes, setIndexDefined, setInitialCapacity, setInitialCapacity, setLastSet, setNull, setSafe, setSafe, setSafe, setSafe, setSafe, setValueCount, setValueLengthSafe, sizeOfValueBuffer, sizeOfViewBufferElements, splitAndTransferTo, transferTo, validateScalars, zeroVector

Methods inherited from class org.apache.arrow.vector.BaseValueVector

checkBufRefs, getAllocator, getReader, getValidityBufferSizeFromCount, iterator, releaseBuffer, toString, transferBuffer

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.arrow.vector.FieldVector

exportBuffer

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface org.apache.arrow.vector.ValueIterableVector

getValueIterable, getValueIterator

Methods inherited from interface org.apache.arrow.vector.ValueVector

accept, allocateNew, allocateNewSafe, clear, close, copyFrom, copyFromSafe, getAllocator, getBuffers, getBufferSize, getBufferSizeFor, getDataBuffer, getField, getName, getNullCount, getOffsetBuffer, getReader, getTransferPair, getTransferPair, getTransferPair, getValidityBuffer, getValueCapacity, getValueCount, hashCode, hashCode, isNull, reAlloc, reset, setInitialCapacity, setValueCount, validate, validateFull

Constructor Details

ViewVarBinaryVector

public ViewVarBinaryVector(String name,
 BufferAllocator allocator)

Instantiate a ViewVarBinaryVector. This doesn't allocate any memory for the data in vector.

Parameters:

name - name of the vector

allocator - allocator for memory management.

ViewVarBinaryVector

public ViewVarBinaryVector(String name,
 FieldType fieldType,
 BufferAllocator allocator)

Instantiate a ViewVarBinaryVector. This doesn't allocate any memory for the data in vector.

Parameters:

name - name of the vector

fieldType - type of Field materialized by this vector

allocator - allocator for memory management.

ViewVarBinaryVector

public ViewVarBinaryVector(Field field,
 BufferAllocator allocator)

Instantiate a ViewVarBinaryVector. This doesn't allocate any memory for the data in vector.

Parameters:

field - field materialized by this vector

allocator - allocator for memory management.

Method Details

getReaderImpl

protected FieldReader getReaderImpl()

Description copied from class: BaseValueVector

Each vector has a different reader that implements the FieldReader interface. Overridden methods must make sure to return the correct concrete reader implementation.

Specified by:

getReaderImpl in class BaseValueVector

Returns:

Returns a lambda that initializes a reader when called.

getMinorType

public Types.MinorType getMinorType()

Get a minor type for this vector. The vector holds values belonging to a particular type.

Specified by:

getMinorType in interface ValueVector

Returns:

Types.MinorType

get

public byte[] get(int index)

Get the variable length element at specified index as a byte array.

Specified by:

get in interface VariableWidthFieldVector

Parameters:

index - position of an element to get

Returns:

array of bytes for a non-null element, null otherwise

read

public void read(int index,
 ReusableBuffer<?> buffer)

Read the value at the given position to the given output buffer. The caller is responsible for checking for nullity first.

Specified by:

read in interface VariableWidthFieldVector

Parameters:

index - position of an element.

buffer - the buffer to write into.

getObject

public byte[] getObject(int index)

Get the variable length element at a specified index as a byte array.

Specified by:

getObject in interface ValueVector

Parameters:

index - position of an element to get

Returns:

byte array for a non-null element, null otherwise

get

public void get(int index,
 NullableViewVarBinaryHolder holder)

Get the variable length element at specified index and sets the state in provided holder.

Parameters:

index - position of an element to get

holder - data holder to be populated by this function

set

public void set(int index,
 ViewVarBinaryHolder holder)

Set the variable length element at the specified index to the data buffer supplied in the holder.

Parameters:

index - position of the element to set

holder - holder that carries data buffer.

setSafe

public void setSafe(int index,
 ViewVarBinaryHolder holder)

Same as set(int, ViewVarBinaryHolder) except that it handles the case where index and length of a new element are beyond the existing capacity of the vector.

Parameters:

index - position of the element to set

holder - holder that carries data buffer.

set

public void set(int index,
 NullableViewVarBinaryHolder holder)

Set the variable length element at the specified index to the data buffer supplied in the holder.

Parameters:

index - position of the element to set

holder - holder that carries data buffer.

setSafe

public void setSafe(int index,
 NullableViewVarBinaryHolder holder)

Same as set(int, NullableViewVarBinaryHolder) except that it handles the case where index and length of a new element are beyond the existing capacity of the vector.

Parameters:

index - position of the element to set

holder - holder that carries data buffer.

getTransferPair

public TransferPair getTransferPair(String ref,
 BufferAllocator allocator)

Construct a TransferPair comprising this and a target vector of the same type.

Specified by:

getTransferPair in interface ValueVector

Specified by:

getTransferPair in class BaseVariableWidthViewVector

Parameters:

ref - name of the target vector

allocator - allocator for the target vector

Returns:

TransferPair

getTransferPair

public TransferPair getTransferPair(Field field,
 BufferAllocator allocator)

Description copied from class: BaseVariableWidthViewVector

Construct a transfer pair of this vector and another vector of the same type.

Specified by:

getTransferPair in interface ValueVector

Specified by:

getTransferPair in class BaseVariableWidthViewVector

Parameters:

field - The field materialized by this vector.

allocator - allocator for the target vector

Returns:

TransferPair

makeTransferPair

public TransferPair makeTransferPair(ValueVector to)

Construct a TransferPair with a desired target vector of the same type.

Specified by:

makeTransferPair in interface ValueVector

Parameters:

to - target vector

Returns:

TransferPair