PushProjector.ExprCondition (Apache Calcite API)

All Superinterfaces:

java.util.function.Predicate<RexNode>

All Known Implementing Classes:

PushProjector.OperatorExprCondition

Enclosing class:

PushProjector
```
public static interface PushProjector.ExprCondition
extends java.util.function.Predicate<RexNode>
```
A functor that replies true or false for a given expression.

See Also:

PushProjector.OperatorExprCondition

Field Summary

Fields
Modifier and Type	Field	Description
`static PushProjector.ExprCondition`	`FALSE`	Constant condition that replies `false` for all expressions.
`static PushProjector.ExprCondition`	`TRUE`	Constant condition that replies `true` for all expressions.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

boolean test(RexNode expr)
Evaluates a condition for a given expression.
- Methods inherited from interface java.util.function.Predicate
  and, negate, or

- Field Detail
  - FALSE
```
static final PushProjector.ExprCondition FALSE
```
    Constant condition that replies false for all expressions.
  - TRUE
```
static final PushProjector.ExprCondition TRUE
```
    Constant condition that replies true for all expressions.
- Method Detail
  - test
```
boolean test(RexNode expr)
```
    Evaluates a condition for a given expression.
    
    Specified by:
    
    test in interface java.util.function.Predicate<RexNode>
    
    Parameters:
    
    expr - Expression
    
    Returns:
    
    result of evaluating the condition