ReflectVisitorTest.NumberNegater (Calcite 1.18.0 Test API)

java.lang.Object
- org.apache.calcite.util.ReflectVisitorTest.NumberNegater

All Implemented Interfaces:

org.apache.calcite.util.ReflectiveVisitor

Direct Known Subclasses:

ReflectVisitorTest.CarelessNumberNegater, ReflectVisitorTest.CluelessNumberNegater, ReflectVisitorTest.IndecisiveNumberNegater, ReflectVisitorTest.SomewhatIndecisiveNumberNegater

Enclosing class:

ReflectVisitorTest
```
public abstract class ReflectVisitorTest.NumberNegater
extends java.lang.Object
implements org.apache.calcite.util.ReflectiveVisitor
```
NumberNegater defines the abstract base for a computation object capable of negating an arbitrary number. Subclasses implement the computation by publishing methods with the signature "void visit(X x)" where X is a subclass of Number.

Field Summary

Fields
Modifier and Type	Field	Description
`private org.apache.calcite.util.ReflectiveVisitDispatcher<ReflectVisitorTest.NumberNegater,java.lang.Number>`	`dispatcher`
`protected java.lang.Number`	`result`

Constructor Summary

Constructors
Constructor Description

NumberNegater()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.Number`	`negate(java.lang.Number n)`	Negates the given number.
`java.lang.Number`	`negateWithoutDispatcher(java.lang.Number n)`	Negates the given number without using a dispatcher object to cache applicable methods.

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

- Field Detail
  - result
```
protected java.lang.Number result
```
  - dispatcher
```
private final org.apache.calcite.util.ReflectiveVisitDispatcher<ReflectVisitorTest.NumberNegater,java.lang.Number> dispatcher
```
- Constructor Detail
  - NumberNegater
```
public NumberNegater()
```
- Method Detail
  - negate
```
public java.lang.Number negate(java.lang.Number n)
```
    Negates the given number.
    
    Parameters:
    
    n - the number to be negated
    
    Returns:
    
    the negated result; not guaranteed to be the same concrete type as n; null is returned if n's type wasn't handled
  - negateWithoutDispatcher
```
public java.lang.Number negateWithoutDispatcher(java.lang.Number n)
```
    Negates the given number without using a dispatcher object to cache applicable methods. The results should be the same as negate(Number).
    
    Parameters:
    
    n - the number to be negated
    
    Returns:
    
    the negated result; not guaranteed to be the same concrete type as n; null is returned if n's type wasn't handled