ApplyFunction.LambdaInputBindingInspector (druid-processing 32.0.0 API)

java.lang.Object
- org.apache.druid.math.expr.ApplyFunction.LambdaInputBindingInspector

All Implemented Interfaces:

Expr.InputBindingInspector

Enclosing interface:

ApplyFunction
```
public static class ApplyFunction.LambdaInputBindingInspector
extends Object
implements Expr.InputBindingInspector
```
Helper that can wrap another Expr.InputBindingInspector to use to supply the type information of a LambdaExpr when evaluating Expr.getOutputType(org.apache.druid.math.expr.Expr.InputBindingInspector). Lambda identifiers do not exist in the underlying Expr.InputBindingInspector, but can be created by mapping the lambda identifiers to the arguments that will be applied to them, to map the type information.

Constructor Summary

Constructors
Constructor	Description
`LambdaInputBindingInspector(Expr.InputBindingInspector inspector, LambdaExpr expr, List<Expr> args)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ExpressionType`	`getType(String name)`	Get the `ExpressionType` from the backing store for a given identifier (this is likely a column, but could be other things depending on the backing adapter)

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

Methods inherited from interface org.apache.druid.math.expr.Expr.InputBindingInspector
areNumeric, areNumeric, areSameTypes, areSameTypes, areScalar, areScalar, canVectorize, canVectorize

- Constructor Detail
  - LambdaInputBindingInspector
```
public LambdaInputBindingInspector(Expr.InputBindingInspector inspector,
                                   LambdaExpr expr,
                                   List<Expr> args)
```
- Method Detail
  - getType
```
@Nullable
public ExpressionType getType(String name)
```
    Description copied from interface: Expr.InputBindingInspector
    
    Get the ExpressionType from the backing store for a given identifier (this is likely a column, but could be other things depending on the backing adapter)
    
    Specified by:
    
    getType in interface Expr.InputBindingInspector