SqlBasicVisitor.ArgHandlerImpl (Apache Calcite API)

java.lang.Object
- org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandlerImpl<R>

Type Parameters:

R - result type

All Implemented Interfaces:

SqlBasicVisitor.ArgHandler<R>

Enclosing class:

SqlBasicVisitor<R>
```
public static class SqlBasicVisitor.ArgHandlerImpl<R>
extends java.lang.Object
implements SqlBasicVisitor.ArgHandler<R>
```
Default implementation of SqlBasicVisitor.ArgHandler which merely calls SqlNode.accept(org.apache.calcite.sql.util.SqlVisitor<R>) on each operand.

Field Summary

Fields
Modifier and Type Field Description

private static SqlBasicVisitor.ArgHandler INSTANCE

Constructor Summary

Constructors
Constructor Description

ArgHandlerImpl()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static <R> SqlBasicVisitor.ArgHandler<R>`	`instance()`
`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.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - INSTANCE
```
private static final SqlBasicVisitor.ArgHandler INSTANCE
```
- Constructor Detail
  - ArgHandlerImpl
```
public ArgHandlerImpl()
```
- Method Detail
  - instance
```
public static <R> SqlBasicVisitor.ArgHandler<R> instance()
```
  - result
```
public R result()
```
    Description copied from interface: SqlBasicVisitor.ArgHandler
    
    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.
    
    Specified by:
    
    result in interface SqlBasicVisitor.ArgHandler<R>
  - visitChild
```
public R visitChild(SqlVisitor<R> visitor,
                    SqlNode expr,
                    int i,
                    SqlNode operand)
```
    Description copied from interface: SqlBasicVisitor.ArgHandler
    
    Visits a particular operand of a call, using a given visitor.
    
    Specified by:
    
    visitChild in interface SqlBasicVisitor.ArgHandler<R>