| // Copyright 2013 The Apache Software Foundation |
| // |
| // Licensed 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.tapestry5.ioc; |
| |
| import java.io.IOException; |
| |
| /** |
| * An operation that, when performed, returns a value (like {@link Invokable}, but may throw an {@link java.io.IOException}. |
| * |
| * @since 5.4 |
| * @see OperationTracker#perform(String, IOOperation) |
| */ |
| public interface IOOperation<T> |
| { |
| /** Perform an operation and return a value, or throw the exception. */ |
| T perform() throws IOException; |
| } |
