org.apache.flink.table.expressions.resolver

Class LookupCallResolver

java.lang.Object

org.apache.flink.table.expressions.ApiExpressionVisitor<T>

org.apache.flink.table.expressions.utils.ApiExpressionDefaultVisitor<Expression>

org.apache.flink.table.expressions.resolver.LookupCallResolver

All Implemented Interfaces:

ExpressionVisitor<Expression>

@Internal
public class LookupCallResolver
extends ApiExpressionDefaultVisitor<Expression>

Resolves calls with function names to calls with actual function definitions.

Constructor Summary

Constructors

Constructor and Description
LookupCallResolver(FunctionLookup functionLookup)

Method Summary

Modifier and Type	Method and Description
protected Expression	defaultMethod(Expression expression)
Expression	visit(LookupCallExpression lookupCall)
Expression	visit(UnresolvedCallExpression unresolvedCall)
Expression	visitNonApiExpression(Expression other)

Methods inherited from class org.apache.flink.table.expressions.utils.ApiExpressionDefaultVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class org.apache.flink.table.expressions.ApiExpressionVisitor

visit

Methods inherited from class java.lang.Object

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

Constructor Detail

LookupCallResolver

public LookupCallResolver(FunctionLookup functionLookup)

Method Detail

visit

public Expression visit(LookupCallExpression lookupCall)

Overrides:

visit in class ApiExpressionDefaultVisitor<Expression>

visit

public Expression visit(UnresolvedCallExpression unresolvedCall)

Overrides:

visit in class ApiExpressionDefaultVisitor<Expression>

visitNonApiExpression

public Expression visitNonApiExpression(Expression other)

Overrides:

visitNonApiExpression in class ApiExpressionDefaultVisitor<Expression>

defaultMethod

protected Expression defaultMethod(Expression expression)

Specified by:

defaultMethod in class ApiExpressionDefaultVisitor<Expression>