001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.commons.scxml.model;
018
019 import java.io.Serializable;
020 import java.util.ArrayList;
021 import java.util.List;
022
023 /**
024 * An abstract base class for containers of executable elements in SCXML,
025 * such as <onentry> and <onexit>.
026 *
027 */
028 public abstract class Executable implements Serializable {
029
030 /**
031 * The set of executable elements (those that inheriting from
032 * Action) that are contained in this Executable.
033 */
034 private List actions;
035
036 /**
037 * The parent container, for traceability.
038 */
039 private TransitionTarget parent;
040
041 /**
042 * Constructor.
043 */
044 public Executable() {
045 super();
046 this.actions = new ArrayList();
047 }
048
049 /**
050 * Get the executable actions contained in this Executable.
051 *
052 * @return Returns the actions.
053 */
054 public final List getActions() {
055 return actions;
056 }
057
058 /**
059 * Add an Action to the list of executable actions contained in
060 * this Executable.
061 *
062 * @param action The action to add.
063 */
064 public final void addAction(final Action action) {
065 if (action != null) {
066 this.actions.add(action);
067 }
068 }
069
070 /**
071 * Get the TransitionTarget parent.
072 *
073 * @return Returns the parent.
074 */
075 public final TransitionTarget getParent() {
076 return parent;
077 }
078
079 /**
080 * Set the TransitionTarget parent.
081 *
082 * @param parent The parent to set.
083 */
084 public final void setParent(final TransitionTarget parent) {
085 this.parent = parent;
086 }
087
088 }
089