| /* |
| * 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; |
| } |