SqlBasicVisitor.ArgHandler (Apache Calcite API)

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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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, 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,
             SqlNode operand)
```
    Visits a particular operand of a call, using a given visitor.