InbuiltFunctionEvaluator (Pinot local segment implementations 1.1.0 API)

java.lang.Object
- org.apache.pinot.segment.local.function.InbuiltFunctionEvaluator

All Implemented Interfaces:

FunctionEvaluator
```
public class InbuiltFunctionEvaluator
extends Object
implements FunctionEvaluator
```
Evaluates an expression.
This is optimized for evaluating an expression multiple times with different inputs.
Overall idea: parse the expression into an ExecutableNode, where an ExecutableNode can be:
- FunctionNode - executes a function
- ColumnNode - fetches the value of the column from the input GenericRow
- ConstantNode - returns the literal value

Constructor Summary

Constructors
Constructor Description

InbuiltFunctionEvaluator(String functionExpression)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`evaluate(Object[] values)`	Evaluates the function on the given values (same order as the arguments) and returns the result.
`Object`	`evaluate(GenericRow row)`	Evaluate the function on the generic row and return the result
`List<String>`	`getArguments()`	Get the arguments of the function

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

- Constructor Detail
  - InbuiltFunctionEvaluator
```
public InbuiltFunctionEvaluator(String functionExpression)
```
- Method Detail
  - getArguments
```
public List<String> getArguments()
```
    Description copied from interface: FunctionEvaluator
    
    Get the arguments of the function
    
    Specified by:
    
    getArguments in interface FunctionEvaluator
  - evaluate
```
public Object evaluate(GenericRow row)
```
    Description copied from interface: FunctionEvaluator
    
    Evaluate the function on the generic row and return the result
    
    Specified by:
    
    evaluate in interface FunctionEvaluator
  - evaluate
```
public Object evaluate(Object[] values)
```
    Description copied from interface: FunctionEvaluator
    
    Evaluates the function on the given values (same order as the arguments) and returns the result.
    
    Specified by:
    
    evaluate in interface FunctionEvaluator