/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.pvm.internal.model;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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/**
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* @author Tom Baeyens
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*/
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public abstract class CompositeElementImpl extends ScopeElementImpl implements CompositeElement {
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private static final long serialVersionUID = 1L;
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protected List<ActivityImpl> activities;
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transient protected Map<String, ActivityImpl> activitiesMap;
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// nested activities /////////////////////////////////////////////////////////////
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/**
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* creates a nested activity. Also the nested activity's parent pointer will be set
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* appropriatly.
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*/
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public ActivityImpl createActivity() {
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return createActivity(null);
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}
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/**
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* creates a nested activity with the given name. Also the nested activity's parent pointer will be set
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* appropriatly.
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* @param activityName may be null.
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*/
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public ActivityImpl createActivity(String activityName) {
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ActivityImpl activity = new ActivityImpl();
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activity.setName(activityName);
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addActivity(activity);
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return activity;
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}
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public Activity addActivity(ActivityImpl activity) {
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activity.setProcessDefinition(processDefinition);
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if (activities==null) {
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activities = new ArrayList<ActivityImpl>();
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}
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if (! activities.contains(activity)) {
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activities.add(activity);
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}
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activitiesMap = null;
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return activity;
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}
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/** removes the given activity from the nested activities.
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* Also the activity's parent will be nulled.
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* This method will do nothing if the activity is null or if
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* the activity is not in the list of nested activities.
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* If the activity is actually removed from the list of
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* activities, the activity's source will be nulled.
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* In case this is the activity that was in the
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* activitiesMap and another activity exists with the same
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* name, that activity (the first) will be put in the
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* activitiesMap as a replacement for the removed activity.
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*/
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public boolean removeActivity(ActivityImpl activity) {
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if ( (activity!=null)
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&& (activities!=null)
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) {
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boolean isRemoved = activities.remove(activity);
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if (isRemoved) {
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activity.setParentActivity(null);
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if (activities.isEmpty()) {
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activities = null;
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}
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activitiesMap = null;
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}
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return isRemoved;
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}
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return false;
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}
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/** the first nested activity with the given name or null of no
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* such activity exists.
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*/
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public ActivityImpl getActivity(String activityName) {
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return (getActivitiesMap()!=null ? activitiesMap.get(activityName) : null);
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}
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/** is this activity present ? */
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public boolean hasActivity(String activityName) {
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return ((getActivitiesMap()!=null) && (activitiesMap.containsKey(activityName)));
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}
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public ActivityImpl findActivity(String activityName) {
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if (activities!=null) {
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for(ActivityImpl n : activities) {
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ActivityImpl activity = n.findActivity(activityName);
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if (activity!=null) {
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return activity;
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}
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}
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}
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return null;
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}
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/** the list of nested activities.
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* Beware: the actual member is returned. No copy is made.
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*/
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public List<? extends Activity> getActivities() {
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return (List) activities;
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}
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/** the nested activities, keyed by activity name. If a activity with
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* the same name occurs mutltiple times, the first in the list
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* is included in the map.
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* Activities with a null value for their name are not included
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* in the map.
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* Beware: the actual member is returned. No copy is made.
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*/
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public Map<String, Activity> getActivitiesMap() {
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if (activitiesMap == null) {
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this.activitiesMap = ActivityImpl.getActivitiesMap(activities);
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}
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return (Map) activitiesMap;
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}
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/** indicates if this processDefinition has activities. */
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public boolean hasActivities() {
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return ((activities!=null) && (!activities.isEmpty()));
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}
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}
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