RexImpTable.IsXxxImplementor (Apache Calcite API)

java.lang.Object
- org.apache.calcite.adapter.enumerable.RexImpTable.IsXxxImplementor

All Implemented Interfaces:

CallImplementor

Enclosing class:

RexImpTable
```
private static class RexImpTable.IsXxxImplementor
extends java.lang.Object
implements CallImplementor
```
Implements "IS XXX" operations such as "IS NULL" or "IS NOT TRUE".
What these operators have in common:
1. They return TRUE or FALSE, never NULL. 2. Of the 3 input values (TRUE, FALSE, NULL) they return TRUE for 1 or 2, FALSE for the other 2 or 1.

Field Summary

Fields
Modifier and Type Field Description

private boolean negate

private java.lang.Boolean seek

Constructor Summary

Constructors
Constructor Description

IsXxxImplementor(java.lang.Boolean seek, boolean negate)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Expression`	`implement(RexToLixTranslator translator, RexCall call, RexImpTable.NullAs nullAs)`	Implements a call.

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

Field Detail

seek
```
private final java.lang.Boolean seek
```

negate
```
private final boolean negate
```

Constructor Detail

IsXxxImplementor

IsXxxImplementor(java.lang.Boolean seek,
                 boolean negate)

Method Detail
- implement
```
public Expression implement(RexToLixTranslator translator,
                            RexCall call,
                            RexImpTable.NullAs nullAs)
```
  Description copied from interface: CallImplementor
  
  Implements a call.
  
  Specified by:
  
  implement in interface CallImplementor
  
  Parameters:
  
  translator - Translator for the call
  
  call - Call that should be implemented
  
  nullAs - The desired mode of null translation
  
  Returns:
  
  Translated call