FeatureAttributeVisitor (Geotools modules 30-SNAPSHOT API)

All Superinterfaces:

FeatureVisitor

All Known Implementing Classes:

AverageVisitor, GroupByVisitor, MaxVisitor, MedianVisitor, MinVisitor, NearestVisitor, StandardDeviationVisitor, SumAreaVisitor, SumVisitor, UniqueCountVisitor, UniqueVisitor
```
public interface FeatureAttributeVisitor
extends FeatureVisitor
```
Extension of FeatureVisitor for visitors that require access to properties of the feature collection being visited.

Author:

Justin Deoliveira, OpenGeo

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`List<Expression>`	`getExpressions()`	List of expressions used by visitor.
`default Optional<List<Class>>`	`getResultType(List<Class> inputTypes)`	Returns the expected output type given the input type.

Methods inherited from interface FeatureVisitor
visit

- Method Detail
  - getExpressions
```
List<Expression> getExpressions()
```
    List of expressions used by visitor.
  - getResultType
```
default Optional<List<Class>> getResultType(List<Class> inputTypes)
```
    Returns the expected output type given the input type.
    
    Parameters:
    
    inputTypes - The type of the input expressions
    
    Throws:
    
    IllegalArgumentException - If the list of input types is not a match for the getExpressions() result or is not acceptable for this visito