WritableColumnVector Contract

WritableColumnVector is the extension of the ColumnVector contract for writable column vectors that FIXME.

Table 1. WritableColumnVector Contract (Abstract Methods Only)
Method Description

getArrayLength

 
int getArrayLength(int rowId)

Used when…​FIXME

getArrayOffset

 
int getArrayOffset(int rowId)

Used when…​FIXME

getBytesAsUTF8String

 
UTF8String getBytesAsUTF8String(
  int rowId,
  int count)

Used when…​FIXME

getDictId

 
int getDictId(int rowId)

Used when…​FIXME

putArray

 
void putArray(
  int rowId,
  int offset,
  int length)

Used when…​FIXME

putBoolean

 
void putBoolean(
  int rowId,
  boolean value)

Used when…​FIXME

putBooleans

 
void putBooleans(
  int rowId,
  int count,
  boolean value)

Used when…​FIXME

putByte

 
void putByte(
  int rowId,
  byte value)

Used when…​FIXME

putByteArray

 
int putByteArray(
  int rowId,
  byte[] value,
  int offset,
  int count)

Used when…​FIXME

putBytes

 
void putBytes(
  int rowId,
  int count,
  byte value)
void putBytes(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)

Used when…​FIXME

putDouble

 
void putDouble(
  int rowId,
  double value)

Used when…​FIXME

putDoubles

 
void putDoubles(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)
void putDoubles(
  int rowId,
  int count,
  double value)
void putDoubles(
  int rowId,
  int count,
  double[] src,
  int srcIndex)

Used when…​FIXME

putFloat

 
void putFloat(
  int rowId,
  float value)

Used when…​FIXME

putFloats

 
void putFloats(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)
void putFloats(
  int rowId,
  int count,
  float value)
void putFloats(
  int rowId,
  int count,
  float[] src,
  int srcIndex)

Used when…​FIXME

putInt

 
void putInt(
  int rowId,
  int value)

Used when…​FIXME

putInts

 
void putInts(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)
void putInts(
  int rowId,
  int count,
  int value)
void putInts(
  int rowId,
  int count,
  int[] src,
  int srcIndex)

Used when…​FIXME

putIntsLittleEndian

 
void putIntsLittleEndian(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)

Used when…​FIXME

putLong

 
void putLong(
  int rowId,
  long value)

Used when…​FIXME

putLongs

 
void putLongs(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)
void putLongs(
  int rowId,
  int count,
  long value)
void putLongs(
  int rowId,
  int count,
  long[] src,
  int srcIndex)

Used when…​FIXME

putLongsLittleEndian

 
void putLongsLittleEndian(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)

Used when…​FIXME

putNotNull

 
void putNotNull(int rowId)

Used when WritableColumnVector is requested to reset and appendNotNulls

putNotNulls

 
void putNotNulls(
  int rowId,
  int count)

Used when…​FIXME

putNull

 
void putNull(int rowId)

Used when…​FIXME

putNulls

 
void putNulls(
  int rowId,
  int count)

Used when…​FIXME

putShort

 
void putShort(
  int rowId,
  short value)

Used when…​FIXME

putShorts

 
void putShorts(
  int rowId,
  int count,
  byte[] src,
  int srcIndex)
void putShorts(
  int rowId,
  int count,
  short value)
void putShorts(
  int rowId,
  int count,
  short[] src,
  int srcIndex)

Used when…​FIXME

reserveInternal

 
void reserveInternal(int capacity)

Used when:

reserveNewColumn

 
WritableColumnVector reserveNewColumn(
  int capacity,
  DataType type)

Used when…​FIXME
Table 2. WritableColumnVectors
WritableColumnVector Description

OffHeapColumnVector

OnHeapColumnVector

WritableColumnVector takes the following to be created:

  • Number of rows to hold in a vector (aka capacity)

  • Data type of the rows stored

Note
 WritableColumnVector is a Java abstract class and cannot be created directly. It is created indirectly for the concrete WritableColumnVectors.

reset Method

void reset()

reset…​FIXME

Note

reset is used when:

Reserving Memory Of Required Capacity — reserve Method

void reserve(int requiredCapacity)

reserve…​FIXME

Note

reserve is used when:

  • OrcColumnarBatchReader is requested to putRepeatingValues, putNonNullValues, putValues, and putDecimalWritables

  • WritableColumnVector is requested to append values

reserveDictionaryIds Method

WritableColumnVector reserveDictionaryIds(int capacity)

reserveDictionaryIds…​FIXME

Note
 reserveDictionaryIds is used when…​FIXME

appendNotNulls Final Method

int appendNotNulls(int count)

appendNotNulls…​FIXME

Note
 appendNotNulls is used for testing purposes only.

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