org.apache.flink.table.data.conversion

接口 DataStructureConverter<I,E>

类型参数:

I - internal data structure (see RowData)

E - external data structure (see DataType.getConversionClass())

所有超级接口:

Serializable

所有已知实现类:

ArrayBooleanArrayConverter, ArrayByteArrayConverter, ArrayDoubleArrayConverter, ArrayFloatArrayConverter, ArrayIntArrayConverter, ArrayLongArrayConverter, ArrayObjectArrayConverter, ArrayShortArrayConverter, DateDateConverter, DateLocalDateConverter, DayTimeIntervalDurationConverter, DecimalBigDecimalConverter, IdentityConverter, LocalZonedTimestampInstantConverter, LocalZonedTimestampIntConverter, LocalZonedTimestampLongConverter, MapMapConverter, RawByteArrayConverter, RawObjectConverter, RowRowConverter, StringByteArrayConverter, StringStringConverter, StructuredObjectConverter, TimeLocalTimeConverter, TimeLongConverter, TimestampLocalDateTimeConverter, TimestampTimestampConverter, TimeTimeConverter, YearMonthIntervalPeriodConverter

@Internal
public interface DataStructureConverter<I,E>
extends Serializable

Converter between internal and external data structure.

Converters are serializable and can be passed to runtime operators.

方法概要

限定符和类型	方法和说明
default void	open(ClassLoader classLoader)
E	toExternal(I internal) Converts to external data structure.
default E	toExternalOrNull(I internal) Converts to external data structure or null.
I	toInternal(E external) Converts to internal data structure.
default I	toInternalOrNull(E external) Converts to internal data structure or null.

方法详细资料

open

default void open(ClassLoader classLoader)

toInternal

I toInternal(E external)

Converts to internal data structure.

Note: Parameter must not be null. Output must not be null.

toInternalOrNull

default I toInternalOrNull(E external)

Converts to internal data structure or null.

The nullability could be derived from the data type. However, this method reduces null checks.

toExternal

E toExternal(I internal)

Converts to external data structure.

Note: Parameter must not be null. Output must not be null.

toExternalOrNull

default E toExternalOrNull(I internal)

Converts to external data structure or null.

The nullability could be derived from the data type. However, this method reduces null checks.