/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pig;
/**
* An interface that captures a unit of work against an item where an exception might be thrown.
*
* @param <S> The argument type for the function.
* @param <T> The return type for the function.
* @param <E> The exception type that the function throws.
*
*/
public interface ExceptionalFunction<S, T, E extends Exception> {
/**
* Performs a unit of work on item, possibly throwing {@code E} in the process.
*
* @param item The item to perform work against.
* @return The result of the computation.
* @throws E if there was a problem performing the work.
*/
public T apply(S item) throws E;
}