org.apache.flink.table.data.vector.writable

接口 WritableColumnVector

所有超级接口:

ColumnVector

所有已知子接口:

WritableBooleanVector, WritableBytesVector, WritableByteVector, WritableDoubleVector, WritableFloatVector, WritableIntVector, WritableLongVector, WritableShortVector, WritableTimestampVector

所有已知实现类:

AbstractHeapVector, AbstractWritableVector, HeapBooleanVector, HeapBytesVector, HeapByteVector, HeapDoubleVector, HeapFloatVector, HeapIntVector, HeapLongVector, HeapShortVector, HeapTimestampVector

public interface WritableColumnVector
extends ColumnVector

Writable ColumnVector.

方法概要

限定符和类型	方法和说明
void	fillWithNulls() Fill the column vector with nulls.
WritableIntVector	getDictionaryIds() Get reserved dictionary ids.
boolean	hasDictionary() Check if there's a dictionary.
WritableIntVector	reserveDictionaryIds(int capacity) Reserve a integer column for ids of dictionary.
void	reset() Resets the column to default state.
void	setDictionary(Dictionary dictionary) Set the dictionary, it should work with dictionary ids.
void	setNullAt(int rowId) Set null at rowId.
void	setNulls(int rowId, int count) Set nulls from rowId to rowId + count (exclude).

从接口继承的方法 org.apache.flink.table.data.vector.ColumnVector

isNullAt

方法详细资料

reset

void reset()

Resets the column to default state.

setNullAt

void setNullAt(int rowId)

Set null at rowId.

setNulls

void setNulls(int rowId,
              int count)

Set nulls from rowId to rowId + count (exclude).

fillWithNulls

void fillWithNulls()

Fill the column vector with nulls.

setDictionary

void setDictionary(Dictionary dictionary)

Set the dictionary, it should work with dictionary ids.

hasDictionary

boolean hasDictionary()

Check if there's a dictionary.

reserveDictionaryIds

WritableIntVector reserveDictionaryIds(int capacity)

Reserve a integer column for ids of dictionary. The size of return WritableIntVector should be equal to or bigger than capacity. DictionaryIds must inconsistent with setDictionary(org.apache.flink.table.data.vector.Dictionary). We don't support a mix of dictionary.

getDictionaryIds

WritableIntVector getDictionaryIds()

Get reserved dictionary ids.