org.apache.flink.table.expressions.utils

Class ApiExpressionDefaultVisitor<T>

java.lang.Object

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

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

All Implemented Interfaces:

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

Direct Known Subclasses:

LookupCallResolver

@Internal
public abstract class ApiExpressionDefaultVisitor<T>
extends ApiExpressionVisitor<T>

A utility ApiExpressionVisitor that calls defaultMethod(Expression) by default, unless other methods are overridden explicitly.

Constructor Summary

Constructors

Constructor and Description
ApiExpressionDefaultVisitor()

Method Summary

Modifier and Type	Method and Description
protected abstract T	defaultMethod(org.apache.flink.table.expressions.Expression expression)
T	visit(org.apache.flink.table.expressions.CallExpression call)
T	visit(org.apache.flink.table.expressions.FieldReferenceExpression fieldReference)
T	visit(LocalReferenceExpression localReference)
T	visit(LookupCallExpression lookupCall)
T	visit(org.apache.flink.table.expressions.ResolvedExpression other) For resolved expressions created by the planner.
T	visit(org.apache.flink.table.expressions.SqlCallExpression sqlCall)
T	visit(TableReferenceExpression tableReference)
T	visit(org.apache.flink.table.expressions.TypeLiteralExpression typeLiteral)
T	visit(UnresolvedCallExpression unresolvedCall)
T	visit(UnresolvedReferenceExpression unresolvedReference)
T	visit(org.apache.flink.table.expressions.ValueLiteralExpression valueLiteral)
T	visitNonApiExpression(org.apache.flink.table.expressions.Expression other)

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

ApiExpressionDefaultVisitor

public ApiExpressionDefaultVisitor()

Method Detail

defaultMethod

protected abstract T defaultMethod(org.apache.flink.table.expressions.Expression expression)

visit

public T visit(org.apache.flink.table.expressions.CallExpression call)

visit

public T visit(org.apache.flink.table.expressions.ValueLiteralExpression valueLiteral)

visit

public T visit(org.apache.flink.table.expressions.FieldReferenceExpression fieldReference)

visit

public T visit(org.apache.flink.table.expressions.TypeLiteralExpression typeLiteral)

visit

public T visit(TableReferenceExpression tableReference)

Specified by:

visit in class ApiExpressionVisitor<T>

visit

public T visit(LocalReferenceExpression localReference)

Specified by:

visit in class ApiExpressionVisitor<T>

visit

public T visit(org.apache.flink.table.expressions.ResolvedExpression other)

Description copied from class: ApiExpressionVisitor

For resolved expressions created by the planner.

Specified by:

visit in class ApiExpressionVisitor<T>

visit

public T visit(UnresolvedReferenceExpression unresolvedReference)

Specified by:

visit in class ApiExpressionVisitor<T>

visit

public T visit(LookupCallExpression lookupCall)

Specified by:

visit in class ApiExpressionVisitor<T>

visit

public T visit(UnresolvedCallExpression unresolvedCall)

Specified by:

visit in class ApiExpressionVisitor<T>

visit

public T visit(org.apache.flink.table.expressions.SqlCallExpression sqlCall)

Specified by:

visit in class ApiExpressionVisitor<T>

visitNonApiExpression

public T visitNonApiExpression(org.apache.flink.table.expressions.Expression other)

Specified by:

visitNonApiExpression in class ApiExpressionVisitor<T>