package com.opencsv.bean.function;

import java.lang.reflect.InvocationTargetException;

Functional interface for accessing a value from a field.
The field must be part of the code created for this functional interface,
as there is no way to pass the field in during invocation.
This interface is almost identical to Function save the exceptions thrown, which is the reason for its existence.
Author:
Andrew Rucker Jones
Type parameters:
<T> – The type of the object from which the value should be retrieved
<R> – The type of the return value
Since:
5.0/**
 * Functional interface for accessing a value from a field.
 * <p>The field must be part of the code created for this functional interface,
 * as there is no way to pass the field in during invocation.</p>
 * <p>This interface is almost identical to {@link java.util.function.Function}
 * save the exceptions thrown, which is the reason for its existence.</p>
 *
 * @param <T> The type of the object from which the value should be retrieved
 * @param <R> The type of the return value
 * @author Andrew Rucker Jones
 * @since 5.0
 */
@FunctionalInterface
public interface AccessorInvoker<T, R> {

    
Invoke the code to retrieve a value from a field.
Params:
object – The object from which the value of the field should be
              retrieved
Throws:
IllegalAccessException – If retrieval causes a problem
InvocationTargetException – If retrieval causes a problem
Returns:
The value of the field from the given object/**
     * Invoke the code to retrieve a value from a field.
     *
     * @param object The object from which the value of the field should be
     *               retrieved
     * @return The value of the field from the given object
     * @throws IllegalAccessException If retrieval causes a problem
     * @throws InvocationTargetException If retrieval causes a problem
     */
    R invoke(T object) throws IllegalAccessException, InvocationTargetException;
}