001/* 002 * flattr4j - A Java library for Flattr 003 * 004 * Copyright (C) 2014 Richard "Shred" Körber 005 * http://flattr4j.shredzone.org 006 * 007 * This program is free software: you can redistribute it and/or modify 008 * it under the terms of the GNU General Public License / GNU Lesser 009 * General Public License as published by the Free Software Foundation, 010 * either version 3 of the License, or (at your option) any later version. 011 * 012 * Licensed under the Apache License, Version 2.0 (the "License"); 013 * you may not use this file except in compliance with the License. 014 * 015 * This program is distributed in the hope that it will be useful, 016 * but WITHOUT ANY WARRANTY; without even the implied warranty of 017 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 018 */ 019package org.shredzone.flattr4j.async; 020 021import org.shredzone.flattr4j.FlattrService; 022 023/** 024 * A {@link FlattrCallable} that does not return a result. 025 * 026 * @author Iulius Gutberlet 027 * @author Richard "Shred" Körber 028 */ 029public abstract class VoidFlattrCallable extends AbstractFlattrCallable<Void> { 030 031 /** 032 * Calls the appropriate method at the service. 033 * 034 * @param service 035 * Preconfigured {@link FlattrService} to be invoked 036 */ 037 public abstract void execute(FlattrService service) throws Exception; //NOSONAR: Accept all exceptions 038 039 @Override 040 public Void call(FlattrService service) throws Exception { 041 execute(service); 042 return null; 043 } 044 045}