org.apache.flink.table.runtime.types

类 PlannerTypeUtils

java.lang.Object

org.apache.flink.table.runtime.types.PlannerTypeUtils

public class PlannerTypeUtils
extends Object

Utilities for LogicalType and DataType..

构造器概要

构造器

构造器和说明
PlannerTypeUtils()

方法概要

限定符和类型	方法和说明
static int	getArity(org.apache.flink.table.types.logical.LogicalType t) Gets the arity of the type.
static boolean	isAssignable(org.apache.flink.table.types.logical.LogicalType t1, org.apache.flink.table.types.logical.LogicalType t2) Now in the conversion to the TypeInformation from DataType, type may loose some information about nullable and precision.
static boolean	isInteroperable(org.apache.flink.table.types.logical.LogicalType t1, org.apache.flink.table.types.logical.LogicalType t2) Can the two types operate with each other.
static boolean	isPrimitive(org.apache.flink.table.types.logical.LogicalType type)
static boolean	isPrimitive(org.apache.flink.table.types.logical.LogicalTypeRoot root)
static org.apache.flink.table.types.logical.LogicalType	removeLegacyTypes(org.apache.flink.table.types.logical.LogicalType t) A conversion that removes all LegacyTypeInformationTypes by mapping to corresponding new types.
static org.apache.flink.table.types.logical.RowType	toRowType(org.apache.flink.table.types.logical.LogicalType t)

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

PlannerTypeUtils

public PlannerTypeUtils()

方法详细资料

getArity

public static int getArity(org.apache.flink.table.types.logical.LogicalType t)

Gets the arity of the type.

toRowType

public static org.apache.flink.table.types.logical.RowType toRowType(org.apache.flink.table.types.logical.LogicalType t)

removeLegacyTypes

public static org.apache.flink.table.types.logical.LogicalType removeLegacyTypes(org.apache.flink.table.types.logical.LogicalType t)

A conversion that removes all LegacyTypeInformationTypes by mapping to corresponding new types.

isPrimitive

public static boolean isPrimitive(org.apache.flink.table.types.logical.LogicalType type)

isPrimitive

public static boolean isPrimitive(org.apache.flink.table.types.logical.LogicalTypeRoot root)

isInteroperable

public static boolean isInteroperable(org.apache.flink.table.types.logical.LogicalType t1,
                                      org.apache.flink.table.types.logical.LogicalType t2)

Can the two types operate with each other. Such as: 1.CodeGen: equal, cast, assignment. 2.Join keys.

isAssignable

public static boolean isAssignable(org.apache.flink.table.types.logical.LogicalType t1,
                                   org.apache.flink.table.types.logical.LogicalType t2)

Now in the conversion to the TypeInformation from DataType, type may loose some information about nullable and precision. So we add this method to do a soft check.

The difference of isInteroperable(org.apache.flink.table.types.logical.LogicalType, org.apache.flink.table.types.logical.LogicalType) is ignore precisions.