Package org.apache.flink.table.expressions.resolver

Class ExpressionResolver.PostResolverFactory

java.lang.Object

org.apache.flink.table.expressions.resolver.ExpressionResolver.PostResolverFactory

Enclosing class:

ExpressionResolver

@Internal
public class ExpressionResolver.PostResolverFactory
extends Object

Factory for creating resolved expressions after the actual resolution has happened. This is required when a resolved expression stack needs to be modified in later transformations.

Note: Further resolution or validation will not happen anymore, therefore the created expressions must be valid.

Constructor Summary

Constructors

Constructor	Description
PostResolverFactory()

Method Summary

Modifier and Type	Method	Description
CallExpression	array(DataType dataType, ResolvedExpression... expression)
CallExpression	as(ResolvedExpression expression, String alias)
CallExpression	cast(ResolvedExpression expression, DataType dataType)
CallExpression	get(ResolvedExpression composite, ValueLiteralExpression key, DataType dataType)
CallExpression	map(DataType dataType, ResolvedExpression... expression)
CallExpression	row(DataType dataType, ResolvedExpression... expression)
CallExpression	wrappingCall(BuiltInFunctionDefinition definition, ResolvedExpression expression)

Methods inherited from class java.lang.Object

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

Constructor Detail

PostResolverFactory

public PostResolverFactory()

Method Detail

as

public CallExpression as(ResolvedExpression expression,
                         String alias)

cast

public CallExpression cast(ResolvedExpression expression,
                           DataType dataType)

row

public CallExpression row(DataType dataType,
                          ResolvedExpression... expression)

array

public CallExpression array(DataType dataType,
                            ResolvedExpression... expression)

map

public CallExpression map(DataType dataType,
                          ResolvedExpression... expression)

wrappingCall

public CallExpression wrappingCall(BuiltInFunctionDefinition definition,
                                   ResolvedExpression expression)

get

public CallExpression get(ResolvedExpression composite,
                          ValueLiteralExpression key,
                          DataType dataType)