org.apache.flink.ml.common.utils

类 DataSetConversionUtil

java.lang.Object

org.apache.flink.ml.common.utils.DataSetConversionUtil

public class DataSetConversionUtil
extends Object

Provide functions of conversions between DataSet and Table.

构造器概要

构造器

构造器和说明
DataSetConversionUtil()

方法概要

限定符和类型	方法和说明
static org.apache.flink.api.java.DataSet<org.apache.flink.types.Row>	fromTable(Long sessionId, org.apache.flink.table.api.Table table) Convert the given Table to DataSet<Row>.
static org.apache.flink.table.api.Table	toTable(Long sessionId, org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data, String[] colNames) Convert the given DataSet into a Table with specified colNames.
static org.apache.flink.table.api.Table	toTable(Long sessionId, org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data, String[] colNames, org.apache.flink.api.common.typeinfo.TypeInformation<?>[] colTypes) Convert the given DataSet into a Table with specified colNames and colTypes.
static org.apache.flink.table.api.Table	toTable(Long sessionId, org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data, org.apache.flink.table.api.TableSchema schema) Convert the given DataSet into a Table with specified TableSchema.
static org.apache.flink.table.api.Table	toTable(MLEnvironment session, org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data, String[] colNames) Convert the given DataSet into a Table with specified colNames.
static org.apache.flink.table.api.Table	toTable(MLEnvironment session, org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data, String[] colNames, org.apache.flink.api.common.typeinfo.TypeInformation<?>[] colTypes) Convert the given DataSet into a Table with specified colNames and colTypes.

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

DataSetConversionUtil

public DataSetConversionUtil()

方法详细资料

fromTable

public static org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> fromTable(Long sessionId,
                                                                                      org.apache.flink.table.api.Table table)

Convert the given Table to DataSet<Row>.

参数:

sessionId - the sessionId of MLEnvironmentFactory

table - the Table to convert.

返回:

the converted DataSet.

toTable

public static org.apache.flink.table.api.Table toTable(Long sessionId,
                                                       org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data,
                                                       org.apache.flink.table.api.TableSchema schema)

Convert the given DataSet into a Table with specified TableSchema.

参数:

sessionId - the sessionId of MLEnvironmentFactory

data - the DataSet to convert.

schema - the specified TableSchema.

返回:

the converted Table.

toTable

public static org.apache.flink.table.api.Table toTable(Long sessionId,
                                                       org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data,
                                                       String[] colNames,
                                                       org.apache.flink.api.common.typeinfo.TypeInformation<?>[] colTypes)

Convert the given DataSet into a Table with specified colNames and colTypes.

参数:

sessionId - sessionId the sessionId of MLEnvironmentFactory.

data - the DataSet to convert.

colNames - the specified colNames.

colTypes - the specified colTypes. This variable is used only when the DataSet is produced by a function and Flink cannot determine automatically what the produced type is.

返回:

the converted Table.

toTable

public static org.apache.flink.table.api.Table toTable(Long sessionId,
                                                       org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data,
                                                       String[] colNames)

Convert the given DataSet into a Table with specified colNames.

参数:

sessionId - sessionId the sessionId of MLEnvironmentFactory.

data - the DataSet to convert.

colNames - the specified colNames.

返回:

the converted Table.

toTable

public static org.apache.flink.table.api.Table toTable(MLEnvironment session,
                                                       org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data,
                                                       String[] colNames,
                                                       org.apache.flink.api.common.typeinfo.TypeInformation<?>[] colTypes)

Convert the given DataSet into a Table with specified colNames and colTypes.

参数:

session - the MLEnvironment using to convert DataSet to Table.

data - the DataSet to convert.

colNames - the specified colNames.

colTypes - the specified colTypes. This variable is used only when the DataSet is produced by a function and Flink cannot determine automatically what the produced type is.

返回:

the converted Table.

toTable

public static org.apache.flink.table.api.Table toTable(MLEnvironment session,
                                                       org.apache.flink.api.java.DataSet<org.apache.flink.types.Row> data,
                                                       String[] colNames)

Convert the given DataSet into a Table with specified colNames.

参数:

session - the MLEnvironment using to convert DataSet to Table.

data - the DataSet to convert.

colNames - the specified colNames.

返回:

the converted Table.