LargeListVector (Apache Arrow Java Root POM 14.0.1 API)

java.lang.Object
- org.apache.arrow.vector.BaseValueVector
- - org.apache.arrow.vector.complex.LargeListVector

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<ValueVector>, PromotableVector, RepeatedValueVector, DensityAwareVector, FieldVector, ValueVector
```
public class LargeListVector
extends BaseValueVector
implements RepeatedValueVector, FieldVector, PromotableVector
```
A list vector contains lists of a specific type of elements. Its structure contains 3 elements.
1. A validity buffer.
2. An offset buffer, that denotes lists boundaries.
3. A child data vector that contains the elements of lists.
This is the LargeList variant of list, it has a 64-bit wide offset
WARNING: Currently Arrow in Java doesn't support 64-bit vectors. This class follows the expected behaviour of a LargeList but doesn't actually support allocating a 64-bit vector. It has little use until 64-bit vectors are supported and should be used with caution. todo review checkedCastToInt usage in this class. Once int64 indexed vectors are supported these checks aren't needed.

Field Summary

Fields
Modifier and Type	Field and Description
`protected CallBack`	`callBack`
`static String`	`DATA_VECTOR_NAME`
`static FieldVector`	`DEFAULT_DATA_VECTOR`
`protected String`	`defaultDataVectorName`
`static byte`	`OFFSET_WIDTH`
`protected long`	`offsetAllocationSizeInBytes`
`protected ArrowBuf`	`offsetBuffer`
`protected UnionLargeListReader`	`reader`
`protected ArrowBuf`	`validityBuffer`
`protected int`	`valueCount`
`protected FieldVector`	`vector`

Fields inherited from class org.apache.arrow.vector.BaseValueVector
allocator, fieldReader, INITIAL_VALUE_ALLOCATION, MAX_ALLOCATION_SIZE, MAX_ALLOCATION_SIZE_PROPERTY

Fields inherited from interface org.apache.arrow.vector.complex.RepeatedValueVector
DEFAULT_REPEAT_PER_RECORD

Constructor Summary

Constructors
Constructor and Description
`LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack)` Constructs a new instance.

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 ValueVector> AddOrGetResult<T>`	`addOrGetVector(FieldType fieldType)` Initialize the data vector (and execute callback) if it hasn't already been done, returns the data vector.
`void`	`allocateNew()` Same as `allocateNewSafe()`.
`boolean`	`allocateNewSafe()` Allocate memory for the vector.
`protected void`	`allocateOffsetBuffer(long size)`
`void`	`clear()` Release any owned ArrowBuf and reset the ValueVector to the initial state.
`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 `copyFrom(int, int, ValueVector)` except that it handles the case when the capacity of the vector needs to be expanded before copy.
`static LargeListVector`	`empty(String name, BufferAllocator allocator)`
`void`	`endValue(int index, long size)` End the current value.
`ArrowBuf[]`	`getBuffers(boolean clear)` Return the underlying buffers associated with this vector.
`int`	`getBufferSize()` Get the size (number of bytes) of underlying buffers used by this vector.
`int`	`getBufferSizeFor(int valueCount)` Returns the number of bytes that is used by this vector if it holds the given number of values.
`List<FieldVector>`	`getChildrenFromFields()` The returned list is the same size as the list passed to initializeChildrenFromFields.
`ArrowBuf`	`getDataBuffer()` Gets the underlying buffer associated with data vector.
`long`	`getDataBufferAddress()` Gets the starting address of the underlying buffer associated with data vector.
`FieldVector`	`getDataVector()` Get the inner data vector for this list vector.
`double`	`getDensity()` Get the density of this ListVector.
`long`	`getElementEndIndex(int index)`
`long`	`getElementStartIndex(int index)`
`Field`	`getField()` Get information about how this field is materialized.
`List<ArrowBuf>`	`getFieldBuffers()` Get the buffers belonging to this vector.
`List<BufferBacked>`	`getFieldInnerVectors()` Deprecated. This API will be removed as the current implementations no longer support inner vectors.
`int`	`getLastSet()`
`Types.MinorType`	`getMinorType()`
`String`	`getName()` Gets the name of the vector.
`int`	`getNullCount()` Get the number of elements that are null in the vector.
`List<?>`	`getObject(int index)` Get the element in the list vector at a particular 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.
`protected int`	`getOffsetBufferValueCapacity()`
`UInt4Vector`	`getOffsetVector()` Deprecated. This API will be removed, as the current implementations no longer hold inner offset vectors.
`UnionLargeListReader`	`getReader()` Default implementation to create a reader for the vector.
`protected FieldReader`	`getReaderImpl()` Each vector has a different reader that implements the FieldReader interface.
`TransferPair`	`getTransferPair(String ref, BufferAllocator allocator)`
`TransferPair`	`getTransferPair(String ref, BufferAllocator allocator, CallBack callBack)`
`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()` Get the current value capacity for the vector.
`int`	`getValueCount()` Gets the number of values.
`UnionLargeListWriter`	`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.
`protected void`	`invalidateReader()`
`boolean`	`isEmpty(int index)` Check if element at given index is empty list.
`boolean`	`isNull(int index)` Check if element at given index is null.
`int`	`isSet(int index)` Same as `isNull(int)`.
`void`	`loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers)` Load the buffers of this vector with provided source buffers.
`TransferPair`	`makeTransferPair(ValueVector target)` Makes a new transfer pair used to transfer underlying buffers.
`UnionVector`	`promoteToUnion()`
`void`	`reAlloc()` Resize the vector to increase the capacity.
`protected void`	`reallocOffsetBuffer()`
`protected void`	`replaceDataVector(FieldVector v)`
`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 numRecords, double density)` Specialized version of setInitialCapacity() for ListVector.
`void`	`setInitialTotalCapacity(int numRecords, int totalNumberOfElements)` Specialized version of setInitialTotalCapacity() for ListVector.
`void`	`setLastSet(int value)`
`void`	`setNotNull(int index)` Sets the list at index to be not-null.
`void`	`setNull(int index)` Sets list at index to be null.
`void`	`setValueCount(int valueCount)` Sets the value count for the vector.
`long`	`startNewValue(long index)` Start a new value in the list vector.

Methods inherited from class org.apache.arrow.vector.BaseValueVector
checkBufRefs, close, getAllocator, getTransferPair, 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.ValueVector
close, getAllocator, getTransferPair, validate, validateFull

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

- Field Detail
  - DEFAULT_DATA_VECTOR
```
public static final FieldVector DEFAULT_DATA_VECTOR
```
  - DATA_VECTOR_NAME
```
public static final String DATA_VECTOR_NAME
```
    See Also:
    
    Constant Field Values
  - OFFSET_WIDTH
```
public static final byte OFFSET_WIDTH
```
    See Also:
    
    Constant Field Values
  - offsetBuffer
```
protected ArrowBuf offsetBuffer
```
  - vector
```
protected FieldVector vector
```
  - callBack
```
protected final CallBack callBack
```
  - valueCount
```
protected int valueCount
```
  - offsetAllocationSizeInBytes
```
protected long offsetAllocationSizeInBytes
```
  - defaultDataVectorName
```
protected String defaultDataVectorName
```
  - validityBuffer
```
protected ArrowBuf validityBuffer
```
  - reader
```
protected UnionLargeListReader reader
```
- Constructor Detail
  - LargeListVector
```
public LargeListVector(String name,
                       BufferAllocator allocator,
                       FieldType fieldType,
                       CallBack callBack)
```
    Constructs a new instance.
    
    Parameters:
    
    name - The name of the instance.
    
    allocator - The allocator to use for allocating/reallocating buffers.
    
    fieldType - The type of this list.
    
    callBack - A schema change callback.
- Method Detail
  - empty
```
public static LargeListVector empty(String name,
                                    BufferAllocator allocator)
```
  - 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
  - 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.
  - setInitialCapacity
```
public void setInitialCapacity(int numRecords,
                               double density)
```
    Specialized version of setInitialCapacity() for ListVector. This is used by some callers when they want to explicitly control and be conservative about memory allocated for inner data vector. This is very useful when we are working with memory constraints for a query and have a fixed amount of memory reserved for the record batch. In such cases, we are likely to face OOM or related problems when we reserve memory for a record batch with value count x and do setInitialCapacity(x) such that each vector allocates only what is necessary and not the default amount but the multiplier forces the memory requirement to go beyond what was needed.
    
    Specified by:
    
    setInitialCapacity in interface DensityAwareVector
    
    Parameters:
    
    numRecords - value count
    
    density - density of ListVector. Density is the average size of list per position in the List vector. For example, a density value of 10 implies each position in the list vector has a list of 10 values. A density value of 0.1 implies out of 10 positions in the list vector, 1 position has a list of size 1 and remaining positions are null (no lists) or empty lists. This helps in tightly controlling the memory we provision for inner data vector.
  - setInitialTotalCapacity
```
public void setInitialTotalCapacity(int numRecords,
                                    int totalNumberOfElements)
```
    Specialized version of setInitialTotalCapacity() for ListVector. This is used by some callers when they want to explicitly control and be conservative about memory allocated for inner data vector. This is very useful when we are working with memory constraints for a query and have a fixed amount of memory reserved for the record batch. In such cases, we are likely to face OOM or related problems when we reserve memory for a record batch with value count x and do setInitialCapacity(x) such that each vector allocates only what is necessary and not the default amount but the multiplier forces the memory requirement to go beyond what was needed.
    
    Parameters:
    
    numRecords - value count
    
    totalNumberOfElements - the total number of elements to to allow for in this vector across all records.
  - getDensity
```
public double getDensity()
```
    Get the density of this ListVector.
    
    Returns:
    
    density
  - 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)
```
    Load the buffers of this vector with provided source buffers. The caller manages the source buffers and populates them before invoking this method.
    
    Specified by:
    
    loadFieldBuffers in interface FieldVector
    
    Parameters:
    
    fieldNode - the fieldNode indicating the value count
    
    ownBuffers - the buffers for this Field (own buffers only, children not included)
  - getFieldBuffers
```
public List<ArrowBuf> getFieldBuffers()
```
    Get the buffers belonging to this vector.
    
    Specified by:
    
    getFieldBuffers in interface FieldVector
    
    Returns:
    
    the inner buffers.
  - 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
  - allocateNew
```
public void allocateNew()
                 throws OutOfMemoryException
```
    Same as allocateNewSafe().
    
    Specified by:
    
    allocateNew in interface ValueVector
    
    Throws:
    
    OutOfMemoryException - Thrown if no memory can be allocated.
  - allocateNewSafe
```
public boolean allocateNewSafe()
```
    Allocate memory for the vector. We internally use a default value count of 4096 to allocate memory for at least these many elements in the vector.
    
    Specified by:
    
    allocateNewSafe in interface ValueVector
    
    Returns:
    
    false if memory allocation fails, true otherwise.
  - allocateOffsetBuffer
```
protected void allocateOffsetBuffer(long size)
```
  - reAlloc
```
public void reAlloc()
```
    Resize the vector to increase the capacity. The internal behavior is to double the current value capacity.
    
    Specified by:
    
    reAlloc in interface ValueVector
  - reallocOffsetBuffer
```
protected void reallocOffsetBuffer()
```
  - copyFromSafe
```
public void copyFromSafe(int inIndex,
                         int outIndex,
                         ValueVector from)
```
    Same as 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 BaseValueVector
    
    Parameters:
    
    inIndex - position to copy from in source vector
    
    outIndex - position to copy to in this vector
    
    from - source vector
  - copyFrom
```
public 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.
    
    Specified by:
    
    copyFrom in interface ValueVector
    
    Overrides:
    
    copyFrom in class BaseValueVector
    
    Parameters:
    
    inIndex - position to copy from in source vector
    
    outIndex - position to copy to in this vector
    
    from - source vector
  - getOffsetVector
```
@Deprecated
public UInt4Vector getOffsetVector()
```
    Deprecated. This API will be removed, as the current implementations no longer hold inner offset vectors.
    
    Get the offset vector.
    
    Specified by:
    
    getOffsetVector in interface RepeatedValueVector
    
    Returns:
    
    the underlying offset vector or null if none exists.
  - getDataVector
```
public FieldVector getDataVector()
```
    Get the inner data vector for this list vector.
    
    Specified by:
    
    getDataVector in interface RepeatedValueVector
    
    Returns:
    
    data vector
  - getTransferPair
```
public TransferPair getTransferPair(String ref,
                                    BufferAllocator allocator)
```
    Specified by:
    
    getTransferPair in interface ValueVector
  - getTransferPair
```
public TransferPair getTransferPair(String ref,
                                    BufferAllocator allocator,
                                    CallBack callBack)
```
    Specified by:
    
    getTransferPair in interface ValueVector
  - 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.
  - 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
  - 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
  - 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
  - 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
  - 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
  - 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
  - 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
  - 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
  - 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
  - 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.
  - getWriter
```
public UnionLargeListWriter getWriter()
```
  - replaceDataVector
```
protected void replaceDataVector(FieldVector v)
```
  - promoteToUnion
```
public UnionVector promoteToUnion()
```
    Specified by:
    
    promoteToUnion in interface PromotableVector
  - 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.
  - getReader
```
public UnionLargeListReader getReader()
```
    Description copied from class: BaseValueVector
    
    Default implementation to create a reader for the vector. Depends on the individual vector class' implementation of BaseValueVector.getReaderImpl() to initialize the reader appropriately.
    
    Specified by:
    
    getReader in interface ValueVector
    
    Overrides:
    
    getReader in class BaseValueVector
    
    Returns:
    
    Concrete instance of FieldReader by using double-checked locking.
  - addOrGetVector
```
public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType)
```
    Initialize the data vector (and execute callback) if it hasn't already been done, returns the data vector.
    
    Specified by:
    
    addOrGetVector in interface PromotableVector
  - getBufferSize
```
public int getBufferSize()
```
    Get the size (number of bytes) of underlying buffers used by this vector.
    
    Specified by:
    
    getBufferSize in interface ValueVector
    
    Returns:
    
    size of underlying buffers.
  - getBufferSizeFor
```
public int getBufferSizeFor(int valueCount)
```
    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:
    
    valueCount - the number of values to assume this vector contains
    
    Returns:
    
    the buffer size if this vector is holding valueCount values
  - 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
  - getMinorType
```
public Types.MinorType getMinorType()
```
    Specified by:
    
    getMinorType in interface ValueVector
  - getName
```
public String getName()
```
    Description copied from interface: ValueVector
    
    Gets the name of the vector.
    
    Specified by:
    
    getName in interface ValueVector
    
    Specified by:
    
    getName in class BaseValueVector
    
    Returns:
    
    the name of the vector.
  - 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
    
    Overrides:
    
    clear in class BaseValueVector
  - 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
  - getBuffers
```
public ArrowBuf[] getBuffers(boolean clear)
```
    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.
  - invalidateReader
```
protected void invalidateReader()
```
  - getObject
```
public List<?> getObject(int index)
```
    Get the element in the list vector at a particular index.
    
    Specified by:
    
    getObject in interface ValueVector
    
    Parameters:
    
    index - position of the element
    
    Returns:
    
    Object at given position
  - isNull
```
public boolean isNull(int index)
```
    Check if element at given index is null.
    
    Specified by:
    
    isNull in interface ValueVector
    
    Parameters:
    
    index - position of element
    
    Returns:
    
    true if element at given index is null, false otherwise
  - isEmpty
```
public boolean isEmpty(int index)
```
    Check if element at given index is empty list.
    
    Parameters:
    
    index - position of element
    
    Returns:
    
    true if element at given index is empty list or NULL, false otherwise
  - isSet
```
public int isSet(int index)
```
    Same as isNull(int).
    
    Parameters:
    
    index - position of element
    
    Returns:
    
    1 if element at given index is not null, 0 otherwise
  - getNullCount
```
public int getNullCount()
```
    Get the number of elements that are null in the vector.
    
    Specified by:
    
    getNullCount in interface ValueVector
    
    Returns:
    
    the number of null elements.
  - getValueCapacity
```
public int getValueCapacity()
```
    Get the current value capacity for the vector.
    
    Specified by:
    
    getValueCapacity in interface ValueVector
    
    Returns:
    
    number of elements that vector can hold.
  - getOffsetBufferValueCapacity
```
protected int getOffsetBufferValueCapacity()
```
  - setNotNull
```
public void setNotNull(int index)
```
    Sets the list at index to be not-null. Reallocates validity buffer if index is larger than current capacity.
  - setNull
```
public void setNull(int index)
```
    Sets list at index to be null.
    
    Specified by:
    
    setNull in interface FieldVector
    
    Parameters:
    
    index - position in vector
  - startNewValue
```
public long startNewValue(long index)
```
    Start a new value in the list vector.
    
    Parameters:
    
    index - index of the value to start
  - endValue
```
public void endValue(int index,
                     long size)
```
    End the current value.
    
    Parameters:
    
    index - index of the value to end
    
    size - number of elements in the list that was written
  - setValueCount
```
public void setValueCount(int valueCount)
```
    Sets the value count for the vector.
    Important note: The underlying vector does not support 64-bit allocations yet. This may throw if attempting to hold larger than what a 32-bit vector can store.
    
    Specified by:
    
    setValueCount in interface ValueVector
    
    Parameters:
    
    valueCount - value count
  - setLastSet
```
public void setLastSet(int value)
```
  - getLastSet
```
public int getLastSet()
```
  - getElementStartIndex
```
public long getElementStartIndex(int index)
```
  - getElementEndIndex
```
public long getElementEndIndex(int index)
```

Class LargeListVector

Field Summary

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

Fields inherited from interface org.apache.arrow.vector.complex.RepeatedValueVector

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

Field Detail

DEFAULT_DATA_VECTOR

DATA_VECTOR_NAME

OFFSET_WIDTH

offsetBuffer

vector

callBack

valueCount

offsetAllocationSizeInBytes

defaultDataVectorName

validityBuffer

reader

Constructor Detail

LargeListVector

Method Detail

empty

initializeChildrenFromFields

setInitialCapacity

setInitialCapacity

setInitialTotalCapacity

getDensity

getChildrenFromFields

loadFieldBuffers

getFieldBuffers

getFieldInnerVectors

allocateNew

allocateNewSafe

allocateOffsetBuffer

reAlloc

reallocOffsetBuffer

copyFromSafe

copyFrom

getOffsetVector

getDataVector

getTransferPair

getTransferPair

makeTransferPair

getValidityBufferAddress

getDataBufferAddress

getOffsetBufferAddress

getValidityBuffer

getDataBuffer

getOffsetBuffer

getValueCount

hashCode

hashCode

accept

getWriter

replaceDataVector

promoteToUnion

getReaderImpl

getReader

addOrGetVector

getBufferSize

getBufferSizeFor

getField

getMinorType

getName

clear

reset

getBuffers

invalidateReader

getObject

isNull

isEmpty

isSet

getNullCount

getValueCapacity

getOffsetBufferValueCapacity

setNotNull