DenseUnionVector (Apache Arrow Java Root POM 16.1.0 API)

java.lang.Object
- org.apache.arrow.vector.complex.AbstractContainerVector
- - org.apache.arrow.vector.complex.DenseUnionVector

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<ValueVector>, DensityAwareVector, FieldVector, ValueVector
```
public class DenseUnionVector
extends AbstractContainerVector
implements FieldVector
```

Field Summary

Fields
Modifier and Type Field and Description

static byte OFFSET_WIDTH

static byte TYPE_WIDTH
- Fields inherited from class org.apache.arrow.vector.complex.AbstractContainerVector
  allocator, callBack, name

Fields
Modifier and Type	Field and Description
`static byte`	`OFFSET_WIDTH`
`static byte`	`TYPE_WIDTH`

Constructor Summary

Constructors
Constructor and Description

DenseUnionVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack)

Constructors
Constructor and Description
`DenseUnionVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`<OUT,IN> OUT`	`accept(VectorVisitor<OUT,IN> visitor, IN value)` Accept a generic `VectorVisitor` and return the result.
`<T extends FieldVector> T`	`addOrGet(String name, FieldType fieldType, Class<T> clazz)`
`FieldVector`	`addVector(byte typeId, FieldVector v)`
`void`	`allocateNew()` Allocate new buffers.
`boolean`	`allocateNewSafe()` Allocates new buffers.
`void`	`clear()` Release any owned ArrowBuf and reset the ValueVector to the initial state.
`void`	`close()` Clears out all underlying child vectors.
`void`	`copyFrom(int inIndex, int outIndex, ValueVector from)` Copy a cell value from a particular index in source vector to a particular position in this vector.
`void`	`copyFromSafe(int inIndex, int outIndex, ValueVector from)` Same as `ValueVector.copyFrom(int, int, ValueVector)` except that it handles the case when the capacity of the vector needs to be expanded before copy.
`static DenseUnionVector`	`empty(String name, BufferAllocator allocator)`
`void`	`get(int index, DenseUnionHolder holder)`
`BufferAllocator`	`getAllocator()`
`BigIntVector`	`getBigIntVector(byte typeId)`
`BitVector`	`getBitVector(byte typeId)`
`ArrowBuf[]`	`getBuffers(boolean clear)` Return the underlying buffers associated with this vector.
`int`	`getBufferSize()` Get the number of bytes used by this vector.
`int`	`getBufferSizeFor(int count)` Returns the number of bytes that is used by this vector if it holds the given number of values.
`<T extends FieldVector> T`	`getChild(String name, Class<T> clazz)`
`List<FieldVector>`	`getChildrenFromFields()` The returned list is the same size as the list passed to initializeChildrenFromFields.
`VectorWithOrdinal`	`getChildVectorWithOrdinal(String name)`
`ArrowBuf`	`getDataBuffer()` Gets the underlying buffer associated with data vector.
`long`	`getDataBufferAddress()` Gets the starting address of the underlying buffer associated with data vector.
`DateDayVector`	`getDateDayVector(byte typeId)`
`DateMilliVector`	`getDateMilliVector(byte typeId)`
`Decimal256Vector`	`getDecimal256Vector(byte typeId, ArrowType arrowType)`
`DecimalVector`	`getDecimalVector(byte typeId, ArrowType arrowType)`
`Field`	`getField()` Get information about how this field is materialized.
`List<ArrowBuf>`	`getFieldBuffers()` Get the buffers of the fields, (same size as getFieldVectors() since it is their content).
`List<BufferBacked>`	`getFieldInnerVectors()` Deprecated. This API will be removed as the current implementations no longer support inner vectors.
`Float2Vector`	`getFloat2Vector(byte typeId)`
`Float4Vector`	`getFloat4Vector(byte typeId)`
`Float8Vector`	`getFloat8Vector(byte typeId)`
`IntervalDayVector`	`getIntervalDayVector(byte typeId)`
`IntervalMonthDayNanoVector`	`getIntervalMonthDayNanoVector(byte typeId)`
`IntervalYearVector`	`getIntervalYearVector(byte typeId)`
`IntVector`	`getIntVector(byte typeId)`
`LargeVarBinaryVector`	`getLargeVarBinaryVector(byte typeId)`
`LargeVarCharVector`	`getLargeVarCharVector(byte typeId)`
`ListVector`	`getList(byte typeId)`
`MapVector`	`getMap(byte typeId)`
`Types.MinorType`	`getMinorType()`
`String`	`getName()` Gets the name of the vector.
`int`	`getNullCount()` Returns number of null elements in the vector.
`Object`	`getObject(int index)` Get friendly type object from the vector.
`int`	`getOffset(int index)`
`ArrowBuf`	`getOffsetBuffer()` Gets the underlying buffer associated with offset vector.
`long`	`getOffsetBufferAddress()` Gets the starting address of the underlying buffer associated with offset vector.
`FieldReader`	`getReader()` Get a reader for this vector.
`SmallIntVector`	`getSmallIntVector(byte typeId)`
`StructVector`	`getStruct(byte typeId)`
`TimeMicroVector`	`getTimeMicroVector(byte typeId)`
`TimeMilliVector`	`getTimeMilliVector(byte typeId)`
`TimeNanoVector`	`getTimeNanoVector(byte typeId)`
`TimeSecVector`	`getTimeSecVector(byte typeId)`
`TimeStampMicroVector`	`getTimeStampMicroVector(byte typeId)`
`TimeStampMilliVector`	`getTimeStampMilliVector(byte typeId)`
`TimeStampNanoVector`	`getTimeStampNanoVector(byte typeId)`
`TimeStampSecVector`	`getTimeStampSecVector(byte typeId)`
`TinyIntVector`	`getTinyIntVector(byte typeId)`
`TransferPair`	`getTransferPair(BufferAllocator allocator)` To transfer quota responsibility.
`TransferPair`	`getTransferPair(Field field, BufferAllocator allocator)` To transfer quota responsibility.
`TransferPair`	`getTransferPair(Field field, BufferAllocator allocator, CallBack callBack)` To transfer quota responsibility.
`TransferPair`	`getTransferPair(String ref, BufferAllocator allocator)` To transfer quota responsibility.
`TransferPair`	`getTransferPair(String ref, BufferAllocator allocator, CallBack callBack)` To transfer quota responsibility.
`ArrowBuf`	`getTypeBuffer()`
`byte`	`getTypeId(int index)`
`UInt1Vector`	`getUInt1Vector(byte typeId)`
`UInt2Vector`	`getUInt2Vector(byte typeId)`
`UInt4Vector`	`getUInt4Vector(byte typeId)`
`UInt8Vector`	`getUInt8Vector(byte typeId)`
`ArrowBuf`	`getValidityBuffer()` Gets the underlying buffer associated with validity vector.
`long`	`getValidityBufferAddress()` Gets the starting address of the underlying buffer associated with validity vector.
`int`	`getValueCapacity()` Returns the maximum number of values that can be stored in this vector instance.
`int`	`getValueCount()` Gets the number of values.
`VarBinaryVector`	`getVarBinaryVector(byte typeId)`
`VarCharVector`	`getVarCharVector(byte typeId)`
`ValueVector`	`getVectorByType(byte typeId)`
`FieldWriter`	`getWriter()`
`int`	`hashCode(int index)` Returns hashCode of element in index with the default hasher.
`int`	`hashCode(int index, ArrowBufHasher hasher)` Returns hashCode of element in index with the given hasher.
`void`	`initializeChildrenFromFields(List<Field> children)` Initializes the child vectors to be later loaded with loadBuffers.
`boolean`	`isNull(int index)` IMPORTANT: Union types always return non null as there is no validity buffer.
`int`	`isSet(int index)`
`Iterator<ValueVector>`	`iterator()`
`void`	`loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers)` Loads data in the vectors.
`TransferPair`	`makeTransferPair(ValueVector target)` 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.
`byte`	`registerNewTypeId(Field field)`
`void`	`reset()` Reset the ValueVector to the initial state without releasing any owned ArrowBuf.
`void`	`setInitialCapacity(int numRecords)` Set the initial record capacity.
`void`	`setInitialCapacity(int valueCount, double density)` Set value with density.
`void`	`setNull(int index)` Set the element at the given index to null.
`void`	`setOffset(int index, int offset)`
`void`	`setSafe(int index, DenseUnionHolder holder)`
`void`	`setSafe(int index, NullableBigIntHolder holder)`
`void`	`setSafe(int index, NullableBitHolder holder)`
`void`	`setSafe(int index, NullableDateDayHolder holder)`
`void`	`setSafe(int index, NullableDateMilliHolder holder)`
`void`	`setSafe(int index, NullableDecimal256Holder holder)`
`void`	`setSafe(int index, NullableDecimalHolder holder)`
`void`	`setSafe(int index, NullableFloat2Holder holder)`
`void`	`setSafe(int index, NullableFloat4Holder holder)`
`void`	`setSafe(int index, NullableFloat8Holder holder)`
`void`	`setSafe(int index, NullableIntervalDayHolder holder)`
`void`	`setSafe(int index, NullableIntervalMonthDayNanoHolder holder)`
`void`	`setSafe(int index, NullableIntervalYearHolder holder)`
`void`	`setSafe(int index, NullableIntHolder holder)`
`void`	`setSafe(int index, NullableLargeVarBinaryHolder holder)`
`void`	`setSafe(int index, NullableLargeVarCharHolder holder)`
`void`	`setSafe(int index, NullableSmallIntHolder holder)`
`void`	`setSafe(int index, NullableTimeMicroHolder holder)`
`void`	`setSafe(int index, NullableTimeMilliHolder holder)`
`void`	`setSafe(int index, NullableTimeNanoHolder holder)`
`void`	`setSafe(int index, NullableTimeSecHolder holder)`
`void`	`setSafe(int index, NullableTimeStampMicroHolder holder)`
`void`	`setSafe(int index, NullableTimeStampMilliHolder holder)`
`void`	`setSafe(int index, NullableTimeStampNanoHolder holder)`
`void`	`setSafe(int index, NullableTimeStampSecHolder holder)`
`void`	`setSafe(int index, NullableTinyIntHolder holder)`
`void`	`setSafe(int index, NullableUInt1Holder holder)`
`void`	`setSafe(int index, NullableUInt2Holder holder)`
`void`	`setSafe(int index, NullableUInt4Holder holder)`
`void`	`setSafe(int index, NullableUInt8Holder holder)`
`void`	`setSafe(int index, NullableVarBinaryHolder holder)`
`void`	`setSafe(int index, NullableVarCharHolder holder)`
`void`	`setTypeId(int index, byte typeId)`
`void`	`setValueCount(int valueCount)` Set number of values in the vector.
`int`	`size()`

Methods inherited from class org.apache.arrow.vector.complex.AbstractContainerVector
addOrGetFixedSizeList, addOrGetList, addOrGetMap, addOrGetStruct, addOrGetUnion, getChild, supportsDirectRead, toString, typeify

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, exportCDataBuffers

Methods inherited from interface org.apache.arrow.vector.ValueVector
validate, validateFull

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Field Detail
  - TYPE_WIDTH
```
public static final byte TYPE_WIDTH
```
    See Also:
    
    Constant Field Values
  - OFFSET_WIDTH
```
public static final byte OFFSET_WIDTH
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DenseUnionVector
```
public DenseUnionVector(String name,
                        BufferAllocator allocator,
                        FieldType fieldType,
                        CallBack callBack)
```
- Method Detail
  - empty
```
public static DenseUnionVector empty(String name,
                                     BufferAllocator allocator)
```
  - getAllocator
```
public BufferAllocator getAllocator()
```
    Specified by:
    
    getAllocator in interface ValueVector
    
    Overrides:
    
    getAllocator in class AbstractContainerVector
  - getMinorType
```
public Types.MinorType getMinorType()
```
    Specified by:
    
    getMinorType in interface ValueVector
  - initializeChildrenFromFields
```
public void initializeChildrenFromFields(List<Field> children)
```
    Description copied from interface: FieldVector
    
    Initializes the child vectors to be later loaded with loadBuffers.
    
    Specified by:
    
    initializeChildrenFromFields in interface FieldVector
    
    Parameters:
    
    children - the schema
  - getChildrenFromFields
```
public List<FieldVector> getChildrenFromFields()
```
    Description copied from interface: FieldVector
    
    The returned list is the same size as the list passed to initializeChildrenFromFields.
    
    Specified by:
    
    getChildrenFromFields in interface FieldVector
    
    Returns:
    
    the children according to schema (empty for primitive types)
  - loadFieldBuffers
```
public void loadFieldBuffers(ArrowFieldNode fieldNode,
                             List<ArrowBuf> ownBuffers)
```
    Description copied from interface: FieldVector
    
    Loads data in the vectors. (ownBuffers must be the same size as getFieldVectors())
    
    Specified by:
    
    loadFieldBuffers in interface FieldVector
    
    Parameters:
    
    fieldNode - the fieldNode
    
    ownBuffers - the buffers for this Field (own buffers only, children not included)
  - getFieldBuffers
```
public List<ArrowBuf> getFieldBuffers()
```
    Description copied from interface: FieldVector
    
    Get the buffers of the fields, (same size as getFieldVectors() since it is their content).
    
    Specified by:
    
    getFieldBuffers in interface FieldVector
    
    Returns:
    
    the buffers containing the data for this vector (ready for reading)
  - getFieldInnerVectors
```
@Deprecated
public List<BufferBacked> getFieldInnerVectors()
```
    Deprecated. This API will be removed as the current implementations no longer support inner vectors.
    
    Get the inner vectors.
    
    Specified by:
    
    getFieldInnerVectors in interface FieldVector
    
    Returns:
    
    the inner vectors for this field as defined by the TypeLayout
  - registerNewTypeId
```
public byte registerNewTypeId(Field field)
```
  - getOffsetBufferAddress
```
public long getOffsetBufferAddress()
```
    Description copied from interface: FieldVector
    
    Gets the starting address of the underlying buffer associated with offset vector.
    
    Specified by:
    
    getOffsetBufferAddress in interface FieldVector
    
    Returns:
    
    buffer address
  - getDataBufferAddress
```
public long getDataBufferAddress()
```
    Description copied from interface: FieldVector
    
    Gets the starting address of the underlying buffer associated with data vector.
    
    Specified by:
    
    getDataBufferAddress in interface FieldVector
    
    Returns:
    
    buffer address
  - getValidityBufferAddress
```
public long getValidityBufferAddress()
```
    Description copied from interface: FieldVector
    
    Gets the starting address of the underlying buffer associated with validity vector.
    
    Specified by:
    
    getValidityBufferAddress in interface FieldVector
    
    Returns:
    
    buffer address
  - getValidityBuffer
```
public ArrowBuf getValidityBuffer()
```
    Description copied from interface: ValueVector
    
    Gets the underlying buffer associated with validity vector.
    
    Specified by:
    
    getValidityBuffer in interface ValueVector
    
    Returns:
    
    buffer
  - getOffsetBuffer
```
public ArrowBuf getOffsetBuffer()
```
    Description copied from interface: ValueVector
    
    Gets the underlying buffer associated with offset vector.
    
    Specified by:
    
    getOffsetBuffer in interface ValueVector
    
    Returns:
    
    buffer
  - getTypeBuffer
```
public ArrowBuf getTypeBuffer()
```
  - getDataBuffer
```
public ArrowBuf getDataBuffer()
```
    Description copied from interface: ValueVector
    
    Gets the underlying buffer associated with data vector.
    
    Specified by:
    
    getDataBuffer in interface ValueVector
    
    Returns:
    
    buffer
  - getStruct
```
public StructVector getStruct(byte typeId)
```
  - getTinyIntVector
```
public TinyIntVector getTinyIntVector(byte typeId)
```
  - getUInt1Vector
```
public UInt1Vector getUInt1Vector(byte typeId)
```
  - getUInt2Vector
```
public UInt2Vector getUInt2Vector(byte typeId)
```
  - getSmallIntVector
```
public SmallIntVector getSmallIntVector(byte typeId)
```
  - getFloat2Vector
```
public Float2Vector getFloat2Vector(byte typeId)
```
  - getIntVector
```
public IntVector getIntVector(byte typeId)
```
  - getUInt4Vector
```
public UInt4Vector getUInt4Vector(byte typeId)
```
  - getFloat4Vector
```
public Float4Vector getFloat4Vector(byte typeId)
```
  - getDateDayVector
```
public DateDayVector getDateDayVector(byte typeId)
```
  - getIntervalYearVector
```
public IntervalYearVector getIntervalYearVector(byte typeId)
```
  - getTimeSecVector
```
public TimeSecVector getTimeSecVector(byte typeId)
```
  - getTimeMilliVector
```
public TimeMilliVector getTimeMilliVector(byte typeId)
```
  - getBigIntVector
```
public BigIntVector getBigIntVector(byte typeId)
```
  - getUInt8Vector
```
public UInt8Vector getUInt8Vector(byte typeId)
```
  - getFloat8Vector
```
public Float8Vector getFloat8Vector(byte typeId)
```
  - getDateMilliVector
```
public DateMilliVector getDateMilliVector(byte typeId)
```
  - getTimeStampSecVector
```
public TimeStampSecVector getTimeStampSecVector(byte typeId)
```
  - getTimeStampMilliVector
```
public TimeStampMilliVector getTimeStampMilliVector(byte typeId)
```
  - getTimeStampMicroVector
```
public TimeStampMicroVector getTimeStampMicroVector(byte typeId)
```
  - getTimeStampNanoVector
```
public TimeStampNanoVector getTimeStampNanoVector(byte typeId)
```
  - getTimeMicroVector
```
public TimeMicroVector getTimeMicroVector(byte typeId)
```
  - getTimeNanoVector
```
public TimeNanoVector getTimeNanoVector(byte typeId)
```
  - getIntervalDayVector
```
public IntervalDayVector getIntervalDayVector(byte typeId)
```
  - getIntervalMonthDayNanoVector
```
public IntervalMonthDayNanoVector getIntervalMonthDayNanoVector(byte typeId)
```
  - getDecimal256Vector
```
public Decimal256Vector getDecimal256Vector(byte typeId,
                                            ArrowType arrowType)
```
  - getDecimalVector
```
public DecimalVector getDecimalVector(byte typeId,
                                      ArrowType arrowType)
```
  - getVarBinaryVector
```
public VarBinaryVector getVarBinaryVector(byte typeId)
```
  - getVarCharVector
```
public VarCharVector getVarCharVector(byte typeId)
```
  - getLargeVarCharVector
```
public LargeVarCharVector getLargeVarCharVector(byte typeId)
```
  - getLargeVarBinaryVector
```
public LargeVarBinaryVector getLargeVarBinaryVector(byte typeId)
```
  - getBitVector
```
public BitVector getBitVector(byte typeId)
```
  - getList
```
public ListVector getList(byte typeId)
```
  - getMap
```
public MapVector getMap(byte typeId)
```
  - getTypeId
```
public byte getTypeId(int index)
```
  - getVectorByType
```
public ValueVector getVectorByType(byte typeId)
```
  - allocateNew
```
public void allocateNew()
                 throws OutOfMemoryException
```
    Description copied from interface: ValueVector
    
    Allocate new buffers. ValueVector implements logic to determine how much to allocate.
    
    Specified by:
    
    allocateNew in interface ValueVector
    
    Overrides:
    
    allocateNew in class AbstractContainerVector
    
    Throws:
    
    OutOfMemoryException - Thrown if no memory can be allocated.
  - allocateNewSafe
```
public boolean allocateNewSafe()
```
    Description copied from interface: ValueVector
    
    Allocates new buffers. ValueVector implements logic to determine how much to allocate.
    
    Specified by:
    
    allocateNewSafe in interface ValueVector
    
    Returns:
    
    Returns true if allocation was successful.
  - reAlloc
```
public void reAlloc()
```
    Description copied from interface: ValueVector
    
    Allocate new buffer with double capacity, and copy data into the new buffer. Replace vector's buffer with new buffer, and release old one
    
    Specified by:
    
    reAlloc in interface ValueVector
  - getOffset
```
public int getOffset(int index)
```
  - setInitialCapacity
```
public void setInitialCapacity(int numRecords)
```
    Description copied from interface: ValueVector
    
    Set the initial record capacity.
    
    Specified by:
    
    setInitialCapacity in interface ValueVector
    
    Parameters:
    
    numRecords - the initial record capacity.
  - getValueCapacity
```
public int getValueCapacity()
```
    Description copied from interface: ValueVector
    
    Returns the maximum number of values that can be stored in this vector instance.
    
    Specified by:
    
    getValueCapacity in interface ValueVector
    
    Returns:
    
    the maximum number of values that can be stored in this vector instance.
  - close
```
public void close()
```
    Description copied from class: AbstractContainerVector
    
    Clears out all underlying child vectors.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface ValueVector
    
    Overrides:
    
    close in class AbstractContainerVector
  - clear
```
public void clear()
```
    Description copied from interface: ValueVector
    
    Release any owned ArrowBuf and reset the ValueVector to the initial state. If the vector has any child vectors, they will also be cleared.
    
    Specified by:
    
    clear in interface ValueVector
  - reset
```
public void reset()
```
    Description copied from interface: ValueVector
    
    Reset the ValueVector to the initial state without releasing any owned ArrowBuf. Buffer capacities will remain unchanged and any previous data will be zeroed out. This includes buffers for data, validity, offset, etc. If the vector has any child vectors, they will also be reset.
    
    Specified by:
    
    reset in interface ValueVector
  - getField
```
public Field getField()
```
    Description copied from interface: ValueVector
    
    Get information about how this field is materialized.
    
    Specified by:
    
    getField in interface ValueVector
    
    Returns:
    
    the field corresponding to this vector
  - getTransferPair
```
public TransferPair getTransferPair(BufferAllocator allocator)
```
    Description copied from interface: ValueVector
    
    To transfer quota responsibility.
    
    Specified by:
    
    getTransferPair in interface ValueVector
    
    Parameters:
    
    allocator - the target allocator
    
    Returns:
    
    a transfer pair, creating a new target vector of the same type.
  - getTransferPair
```
public TransferPair getTransferPair(String ref,
                                    BufferAllocator allocator)
```
    Description copied from interface: ValueVector
    
    To transfer quota responsibility.
    
    Specified by:
    
    getTransferPair in interface ValueVector
    
    Parameters:
    
    ref - the name of the vector
    
    allocator - the target allocator
    
    Returns:
    
    a transfer pair, creating a new target vector of the same type.
  - getTransferPair
```
public TransferPair getTransferPair(String ref,
                                    BufferAllocator allocator,
                                    CallBack callBack)
```
    Description copied from interface: ValueVector
    
    To transfer quota responsibility.
    
    Specified by:
    
    getTransferPair in interface ValueVector
    
    Parameters:
    
    ref - the name of the vector
    
    allocator - the target allocator
    
    callBack - A schema change callback.
    
    Returns:
    
    a transfer pair, creating a new target vector of the same type.
  - getTransferPair
```
public TransferPair getTransferPair(Field field,
                                    BufferAllocator allocator)
```
    Description copied from interface: ValueVector
    
    To transfer quota responsibility.
    
    Specified by:
    
    getTransferPair in interface ValueVector
    
    Parameters:
    
    field - the Field object used by the target vector
    
    allocator - the target allocator
    
    Returns:
    
    a transfer pair, creating a new target vector of the same type.
  - getTransferPair
```
public TransferPair getTransferPair(Field field,
                                    BufferAllocator allocator,
                                    CallBack callBack)
```
    Description copied from interface: ValueVector
    
    To transfer quota responsibility.
    
    Specified by:
    
    getTransferPair in interface ValueVector
    
    Parameters:
    
    field - the Field object used by the target vector
    
    allocator - the target allocator
    
    callBack - A schema change callback.
    
    Returns:
    
    a transfer pair, creating a new target vector of the same type.
  - makeTransferPair
```
public TransferPair makeTransferPair(ValueVector target)
```
    Description copied from interface: ValueVector
    
    Makes a new transfer pair used to transfer underlying buffers.
    
    Specified by:
    
    makeTransferPair in interface ValueVector
    
    Parameters:
    
    target - the target for the transfer
    
    Returns:
    
    a new transfer pair that is used to transfer underlying buffers into the target vector.
  - copyFrom
```
public void copyFrom(int inIndex,
                     int outIndex,
                     ValueVector from)
```
    Description copied from interface: ValueVector
    
    Copy a cell value from a particular index in source vector to a particular position in this vector.
    
    Specified by:
    
    copyFrom in interface ValueVector
    
    Overrides:
    
    copyFrom in class AbstractContainerVector
    
    Parameters:
    
    inIndex - position to copy from in source vector
    
    outIndex - position to copy to in this vector
    
    from - source vector
  - copyFromSafe
```
public void copyFromSafe(int inIndex,
                         int outIndex,
                         ValueVector from)
```
    Description copied from interface: ValueVector
    
    Same as ValueVector.copyFrom(int, int, ValueVector) except that it handles the case when the capacity of the vector needs to be expanded before copy.
    
    Specified by:
    
    copyFromSafe in interface ValueVector
    
    Overrides:
    
    copyFromSafe in class AbstractContainerVector
    
    Parameters:
    
    inIndex - position to copy from in source vector
    
    outIndex - position to copy to in this vector
    
    from - source vector
  - addVector
```
public FieldVector addVector(byte typeId,
                             FieldVector v)
```
  - getReader
```
public FieldReader getReader()
```
    Description copied from interface: ValueVector
    
    Get a reader for this vector.
    
    Specified by:
    
    getReader in interface ValueVector
    
    Returns:
    
    a field reader that supports reading values from this vector.
  - getWriter
```
public FieldWriter getWriter()
```
  - getBufferSize
```
public int getBufferSize()
```
    Description copied from interface: ValueVector
    
    Get the number of bytes used by this vector.
    
    Specified by:
    
    getBufferSize in interface ValueVector
    
    Returns:
    
    the number of bytes that is used by this vector instance.
  - getBufferSizeFor
```
public int getBufferSizeFor(int count)
```
    Description copied from interface: ValueVector
    
    Returns the number of bytes that is used by this vector if it holds the given number of values. The result will be the same as if setValueCount() were called, followed by calling getBufferSize(), but without any of the closing side-effects that setValueCount() implies wrt finishing off the population of a vector. Some operations might wish to use this to determine how much memory has been used by a vector so far, even though it is not finished being populated.
    
    Specified by:
    
    getBufferSizeFor in interface ValueVector
    
    Parameters:
    
    count - the number of values to assume this vector contains
    
    Returns:
    
    the buffer size if this vector is holding valueCount values
  - getBuffers
```
public ArrowBuf[] getBuffers(boolean clear)
```
    Description copied from interface: ValueVector
    
    Return the underlying buffers associated with this vector. Note that this doesn't impact the reference counts for this buffer so it only should be used for in-context access. Also note that this buffer changes regularly thus external classes shouldn't hold a reference to it (unless they change it).
    
    Specified by:
    
    getBuffers in interface ValueVector
    
    Parameters:
    
    clear - Whether to clear vector before returning; the buffers will still be refcounted; but the returned array will be the only reference to them
    
    Returns:
    
    The underlying buffers that is used by this vector instance.
  - iterator
```
public Iterator<ValueVector> iterator()
```
    Specified by:
    
    iterator in interface Iterable<ValueVector>
  - getObject
```
public Object getObject(int index)
```
    Description copied from interface: ValueVector
    
    Get friendly type object from the vector.
    
    Specified by:
    
    getObject in interface ValueVector
    
    Parameters:
    
    index - index of object to get
    
    Returns:
    
    friendly type object
  - get
```
public void get(int index,
                DenseUnionHolder holder)
```
  - getValueCount
```
public int getValueCount()
```
    Description copied from interface: ValueVector
    
    Gets the number of values.
    
    Specified by:
    
    getValueCount in interface ValueVector
    
    Returns:
    
    number of values in the vector
  - isNull
```
public boolean isNull(int index)
```
    IMPORTANT: Union types always return non null as there is no validity buffer. To check validity correctly you must check the underlying vector.
    
    Specified by:
    
    isNull in interface ValueVector
    
    Parameters:
    
    index - index to check for null
    
    Returns:
    
    true if element is null
  - getNullCount
```
public int getNullCount()
```
    Description copied from interface: ValueVector
    
    Returns number of null elements in the vector.
    
    Specified by:
    
    getNullCount in interface ValueVector
    
    Returns:
    
    number of null elements
  - isSet
```
public int isSet(int index)
```
  - setValueCount
```
public void setValueCount(int valueCount)
```
    Description copied from interface: ValueVector
    
    Set number of values in the vector.
    
    Specified by:
    
    setValueCount in interface ValueVector
  - setSafe
```
public void setSafe(int index,
                    DenseUnionHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTinyIntHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableUInt1Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableUInt2Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableSmallIntHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableFloat2Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableIntHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableUInt4Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableFloat4Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableDateDayHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableIntervalYearHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeSecHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeMilliHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableBigIntHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableUInt8Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableFloat8Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableDateMilliHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeStampSecHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeStampMilliHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeStampMicroHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeStampNanoHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeMicroHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableTimeNanoHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableIntervalDayHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableIntervalMonthDayNanoHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableDecimal256Holder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableDecimalHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableVarBinaryHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableVarCharHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableLargeVarCharHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableLargeVarBinaryHolder holder)
```
  - setSafe
```
public void setSafe(int index,
                    NullableBitHolder holder)
```
  - setTypeId
```
public void setTypeId(int index,
                      byte typeId)
```
  - setOffset
```
public void setOffset(int index,
                      int offset)
```
  - hashCode
```
public int hashCode(int index,
                    ArrowBufHasher hasher)
```
    Description copied from interface: ValueVector
    
    Returns hashCode of element in index with the given hasher.
    
    Specified by:
    
    hashCode in interface ValueVector
  - hashCode
```
public int hashCode(int index)
```
    Description copied from interface: ValueVector
    
    Returns hashCode of element in index with the default hasher.
    
    Specified by:
    
    hashCode in interface ValueVector
  - accept
```
public <OUT,IN> OUT accept(VectorVisitor<OUT,IN> visitor,
                           IN value)
```
    Description copied from interface: ValueVector
    
    Accept a generic VectorVisitor and return the result.
    
    Specified by:
    
    accept in interface ValueVector
    
    Type Parameters:
    
    OUT - the output result type.
    
    IN - the input data together with visitor.
  - getName
```
public String getName()
```
    Description copied from interface: ValueVector
    
    Gets the name of the vector.
    
    Specified by:
    
    getName in interface ValueVector
    
    Overrides:
    
    getName in class AbstractContainerVector
    
    Returns:
    
    the name of the vector.
  - addOrGet
```
public <T extends FieldVector> T addOrGet(String name,
                                          FieldType fieldType,
                                          Class<T> clazz)
```
    Specified by:
    
    addOrGet in class AbstractContainerVector
  - getChild
```
public <T extends FieldVector> T getChild(String name,
                                          Class<T> clazz)
```
    Specified by:
    
    getChild in class AbstractContainerVector
  - getChildVectorWithOrdinal
```
public VectorWithOrdinal getChildVectorWithOrdinal(String name)
```
    Specified by:
    
    getChildVectorWithOrdinal in class AbstractContainerVector
  - size
```
public int size()
```
    Specified by:
    
    size in class AbstractContainerVector
  - setInitialCapacity
```
public void setInitialCapacity(int valueCount,
                               double density)
```
    Description copied from interface: DensityAwareVector
    
    Set value with density.
    
    Specified by:
    
    setInitialCapacity in interface DensityAwareVector
    
    Parameters:
    
    valueCount - the number of values in this vector
    
    density - the density of the vector
  - setNull
```
public void setNull(int index)
```
    Set the element at the given index to null. For DenseUnionVector, it throws an UnsupportedOperationException as nulls are not supported at the top level and isNull() always returns false.
    
    Specified by:
    
    setNull in interface FieldVector
    
    Parameters:
    
    index - position of element
    
    Throws:
    
    UnsupportedOperationException - whenever invoked

Class DenseUnionVector

Field Summary

Fields inherited from class org.apache.arrow.vector.complex.AbstractContainerVector

Constructor Summary

Method Summary

Methods inherited from class org.apache.arrow.vector.complex.AbstractContainerVector

Methods inherited from class java.lang.Object

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

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

Methods inherited from interface java.lang.Iterable

Field Detail

TYPE_WIDTH

OFFSET_WIDTH

Constructor Detail

DenseUnionVector

Method Detail

empty

getAllocator

getMinorType

initializeChildrenFromFields

getChildrenFromFields

loadFieldBuffers

getFieldBuffers

getFieldInnerVectors

registerNewTypeId

getOffsetBufferAddress

getDataBufferAddress

getValidityBufferAddress

getValidityBuffer

getOffsetBuffer

getTypeBuffer

getDataBuffer

getStruct

getTinyIntVector

getUInt1Vector

getUInt2Vector

getSmallIntVector

getFloat2Vector

getIntVector

getUInt4Vector

getFloat4Vector

getDateDayVector

getIntervalYearVector

getTimeSecVector

getTimeMilliVector

getBigIntVector

getUInt8Vector

getFloat8Vector

getDateMilliVector

getTimeStampSecVector

getTimeStampMilliVector

getTimeStampMicroVector

getTimeStampNanoVector

getTimeMicroVector

getTimeNanoVector

getIntervalDayVector

getIntervalMonthDayNanoVector

getDecimal256Vector

getDecimalVector

getVarBinaryVector

getVarCharVector

getLargeVarCharVector

getLargeVarBinaryVector

getBitVector

getList

getMap

getTypeId

getVectorByType

allocateNew

allocateNewSafe

reAlloc

getOffset

setInitialCapacity

getValueCapacity

close

clear

reset

getField

getTransferPair

getTransferPair