Package org.apache.flink.table.expressions

Class ApiExpressionVisitor<R>

java.lang.Object

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

All Implemented Interfaces:

ExpressionVisitor<R>

Direct Known Subclasses:

ApiExpressionDefaultVisitor

@Internal
public abstract class ApiExpressionVisitor<R>
extends Object
implements ExpressionVisitor<R>

A visitor for all Expressions that might be created during API translation.

Constructor Summary

Constructors

Constructor	Description
ApiExpressionVisitor()

Method Summary

Modifier and Type	Method	Description
R	visit(Expression other)
abstract R	visit(LocalReferenceExpression localReference)
abstract R	visit(LookupCallExpression lookupCall)
abstract R	visit(ResolvedExpression other)	For resolved expressions created by the planner.
abstract R	visit(SqlCallExpression sqlCall)
abstract R	visit(TableReferenceExpression tableReference)
abstract R	visit(UnresolvedCallExpression unresolvedCallExpression)
abstract R	visit(UnresolvedReferenceExpression unresolvedReference)
abstract R	visitNonApiExpression(Expression other)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.expressions.ExpressionVisitor

visit, visit, visit, visit, visit

Constructor Detail

ApiExpressionVisitor

public ApiExpressionVisitor()

Method Detail

visit

public final R visit(Expression other)

Specified by:

visit in interface ExpressionVisitor<R>

visit

public abstract R visit(TableReferenceExpression tableReference)

visit

public abstract R visit(LocalReferenceExpression localReference)

visit

public abstract R visit(ResolvedExpression other)

For resolved expressions created by the planner.

visit

public abstract R visit(UnresolvedReferenceExpression unresolvedReference)

visit

public abstract R visit(LookupCallExpression lookupCall)

visit

public abstract R visit(UnresolvedCallExpression unresolvedCallExpression)

visit

public abstract R visit(SqlCallExpression sqlCall)

visitNonApiExpression

public abstract R visitNonApiExpression(Expression other)