    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