org.apache.calcite.sql.util

Interface SqlBasicVisitor.ArgHandler<R>

Type Parameters:

R - result type

All Known Implementing Classes:

SqlBasicVisitor.ArgHandlerImpl, SqlShuttle.CallCopyingArgHandler

Enclosing class:

SqlBasicVisitor<R>

public static interface SqlBasicVisitor.ArgHandler<R>

Argument handler.

Method Summary

Modifier and Type	Method and Description
R	result() Returns the result of visiting all children of a call to an operator, then the call itself.
R	visitChild(SqlVisitor<R> visitor, SqlNode expr, int i, @Nullable SqlNode operand) Visits a particular operand of a call, using a given visitor.

Method Detail

result

R result()

Returns the result of visiting all children of a call to an operator, then the call itself.

Typically the result will be the result of the last child visited, or (if R is Boolean) whether all children were visited successfully.

visitChild

R visitChild(SqlVisitor<R> visitor,
             SqlNode expr,
             int i,
             @Nullable SqlNode operand)

Visits a particular operand of a call, using a given visitor.