org.apache.flink.streaming.api.utils

类 PythonTypeUtils

java.lang.Object

org.apache.flink.streaming.api.utils.PythonTypeUtils

@Internal
public class PythonTypeUtils
extends Object

A util class for converting the given TypeInformation to other objects.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	PythonTypeUtils.ArrayDataConverter<T> The element in the Object Array will be converted to the corresponding Data through element DataConverter.
static class	PythonTypeUtils.ByteDataConverter Python Long will be converted to Long in PemJa, so we need ByteDataConverter to convert Java Long to internal Byte.
static class	PythonTypeUtils.DataConverter<IN,OUT> Data Converter that converts the data to the format data which can be used in PemJa.
static class	PythonTypeUtils.FloatDataConverter Python Float will be converted to Double in PemJa, so we need FloatDataConverter to convert Java Double to internal Float.
static class	PythonTypeUtils.IdentityDataConverter<T> Identity data converter.
static class	PythonTypeUtils.IntDataConverter Python Long will be converted to Long in PemJa, so we need IntDataConverter to convert Java Long to internal Integer.
static class	PythonTypeUtils.ListDataConverter The element in the List will be converted to the corresponding Data through element DataConverter.
static class	PythonTypeUtils.MapDataConverter The key/value in the Map will be converted to the corresponding Data through key/value DataConverter.
static class	PythonTypeUtils.RowDataConverter Row Data will be converted to the Object Array [RowKind(as Long Object), Field Values(as Object Array)].
static class	PythonTypeUtils.RowDataDataConverter RowData Data will be converted to the Object Array [RowKind(as Long Object), Field Values(as Object Array)].
static class	PythonTypeUtils.ShortDataConverter Python Long will be converted to Long in PemJa, so we need ShortDataConverter to convert Java Long to internal Short.
static class	PythonTypeUtils.TupleDataConverter Tuple Data will be converted to the Object Array.
static class	PythonTypeUtils.TypeInfoToDataConverter Get DataConverter according to the given typeInformation.
static class	PythonTypeUtils.TypeInfoToProtoConverter Get coder proto according to the given type information.
static class	PythonTypeUtils.TypeInfoToSerializerConverter Get serializers according to the given typeInformation.

构造器概要

构造器

构造器和说明
PythonTypeUtils()

方法概要

限定符和类型	方法和说明
static <T> org.apache.flink.api.common.io.InputFormat<T,?>	getCollectionInputFormat(List<T> data, org.apache.flink.api.common.typeinfo.TypeInformation<T> dataType, org.apache.flink.api.common.ExecutionConfig config) Wrap the unpickled python data with an InputFormat.

从类继承的方法 java.lang.Object

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

构造器详细资料

PythonTypeUtils

public PythonTypeUtils()

方法详细资料

getCollectionInputFormat

public static <T> org.apache.flink.api.common.io.InputFormat<T,?> getCollectionInputFormat(List<T> data,
                                                                                           org.apache.flink.api.common.typeinfo.TypeInformation<T> dataType,
                                                                                           org.apache.flink.api.common.ExecutionConfig config)

Wrap the unpickled python data with an InputFormat. It will be passed to StreamExecutionEnvironment.creatInput() to create an InputFormat later.

参数:

data - The unpickled python data.

dataType - The python data type.

config - The execution config used to create serializer.

返回:

An InputFormat containing the python data.