1 /* 2 * Copyright (c) 2007, Fraunhofer-Gesellschaft 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * (1) Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the disclaimer at the end. 11 * Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in 13 * the documentation and/or other materials provided with the 14 * distribution. 15 * 16 * (2) Neither the name of Fraunhofer nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * DISCLAIMER 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 package org.ogf.graap.wsag.server.actions; 36 37 import org.ogf.graap.wsag.api.WsagConstants; 38 import org.ogf.graap.wsag.api.configuration.WSAG4JConfiguration; 39 40 /** 41 * An action builder instantiates the agreement factory actions based on a WSAG4J engine configuration. 42 * 43 * @author Oliver Waeldrich 44 * 45 */ 46 public abstract class ActionBuilder 47 { 48 49 private static IActionBuilder instance; 50 51 /** 52 * 53 * @return the instantiated factory actions 54 */ 55 public static synchronized IActionBuilder getInstance() 56 { 57 if ( instance == null ) 58 { 59 String defaultName = org.ogf.graap.wsag.server.actions.impl.ActionBuilder.class.getName(); 60 61 instance = 62 (IActionBuilder) WSAG4JConfiguration.findSingeltonImplementation( IActionBuilder.class, 63 WsagConstants.WSAG4J_CONFIG_FILE, 64 defaultName ); 65 } 66 return instance; 67 } 68 69 }