org.apache.flink.table.runtime.arrow.writers

类 MapWriter<T>

java.lang.Object

org.apache.flink.table.runtime.arrow.writers.ArrowFieldWriter<T>

org.apache.flink.table.runtime.arrow.writers.MapWriter<T>

直接已知子类:

MapWriter.MapWriterForArray, MapWriter.MapWriterForRow

@Internal
public abstract class MapWriter<T>
extends ArrowFieldWriter<T>

ArrowFieldWriter for Map.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	MapWriter.MapWriterForArray MapWriter for ArrayData input.
static class	MapWriter.MapWriterForRow MapWriter for RowData input.

方法概要

限定符和类型	方法和说明
void	doWrite(T in, int ordinal) Sets the field value as the field at the specified ordinal of the specified row.
static MapWriter<org.apache.flink.table.data.ArrayData>	forArray(org.apache.arrow.vector.complex.MapVector mapVector, ArrowFieldWriter<org.apache.flink.table.data.ArrayData> keyWriter, ArrowFieldWriter<org.apache.flink.table.data.ArrayData> valueWriter)
static MapWriter<org.apache.flink.table.data.RowData>	forRow(org.apache.arrow.vector.complex.MapVector mapVector, ArrowFieldWriter<org.apache.flink.table.data.ArrayData> keyWriter, ArrowFieldWriter<org.apache.flink.table.data.ArrayData> valueWriter)

从类继承的方法 org.apache.flink.table.runtime.arrow.writers.ArrowFieldWriter

finish, getCount, getValueVector, reset, write

从类继承的方法 java.lang.Object

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

方法详细资料

forRow

public static MapWriter<org.apache.flink.table.data.RowData> forRow(org.apache.arrow.vector.complex.MapVector mapVector,
                                                                    ArrowFieldWriter<org.apache.flink.table.data.ArrayData> keyWriter,
                                                                    ArrowFieldWriter<org.apache.flink.table.data.ArrayData> valueWriter)

forArray

public static MapWriter<org.apache.flink.table.data.ArrayData> forArray(org.apache.arrow.vector.complex.MapVector mapVector,
                                                                        ArrowFieldWriter<org.apache.flink.table.data.ArrayData> keyWriter,
                                                                        ArrowFieldWriter<org.apache.flink.table.data.ArrayData> valueWriter)

doWrite

public void doWrite(T in,
                    int ordinal)

从类复制的说明: ArrowFieldWriter

Sets the field value as the field at the specified ordinal of the specified row.

指定者:

doWrite 在类中 ArrowFieldWriter<T>