RexExecutor (Apache Calcite API)

All Known Subinterfaces:

RelOptPlanner.Executor

All Known Implementing Classes:

RexExecutorImpl
```
public interface RexExecutor
```
Can reduce expressions, writing a literal for each into a list.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`reduce(RexBuilder rexBuilder, java.util.List<RexNode> constExps, java.util.List<RexNode> reducedValues)`	Reduces expressions, and writes their results into `reducedValues`.

- Method Detail
  - reduce
```
void reduce(RexBuilder rexBuilder,
            java.util.List<RexNode> constExps,
            java.util.List<RexNode> reducedValues)
```
    Reduces expressions, and writes their results into reducedValues.
    If an expression cannot be reduced, writes the original expression. For example, CAST('abc' AS INTEGER) gives an error when executed, so the executor ignores the error and writes the original expression.
    
    Parameters:
    
    rexBuilder - Rex builder
    
    constExps - Expressions to be reduced
    
    reducedValues - List to which reduced expressions are appended