Control (OpenRefine 4.0-SNAPSHOT API)

All Superinterfaces:

Serializable

All Known Implementing Classes:

Filter, ForEach, ForEachIndex, ForNonBlank, ForRange, If, IsBlank, IsEmptyString, IsError, IsNonBlank, IsNotNull, IsNull, IsNumeric, With
```
public interface Control
extends Serializable
```
Interface of GREL controls such as if, forEach, forNonBlank, with. A control can decide which part of the code to execute and can affect the environment bindings. Functions, on the other hand, can't do either.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`Object`	`call(Properties bindings, GrelExpr[] args)`
`String`	`checkArguments(GrelExpr[] args)`
`String`	`getDescription()`
`default String`	`getParams()`
`String`	`getReturns()`

Method Detail

call

Object call(Properties bindings,
            GrelExpr[] args)

checkArguments

String checkArguments(GrelExpr[] args)

getDescription
```
String getDescription()
```

getParams
```
default String getParams()
```

getReturns
```
String getReturns()
```