92 lines
2.4 KiB
Java
92 lines
2.4 KiB
Java
/*
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* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.persistence.api;
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import java.text.MessageFormat;
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import java.util.ArrayList;
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import java.util.List;
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import li.strolch.agent.api.ActivityMap;
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import li.strolch.exception.StrolchException;
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import li.strolch.model.activity.Activity;
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import li.strolch.service.api.Command;
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import li.strolch.utils.dbc.DBC;
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/**
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class RemoveActivitiesCommand extends Command {
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private List<Activity> activities = new ArrayList<>();
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private final List<Activity> removed = new ArrayList<>();
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public RemoveActivitiesCommand(StrolchTransaction tx) {
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super(tx);
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}
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/**
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* @param activities
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* the activities to set for removal
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*/
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public void setActivities(List<Activity> activities) {
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this.activities = activities;
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}
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/**
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* @param activity
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* the activity to add for removal
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*/
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public void addActivity(Activity activity) {
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this.activities.add(activity);
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}
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@Override
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public void validate() {
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DBC.PRE.assertNotEmpty("Activities may not be empty!", this.activities);
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}
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@Override
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public void doCommand() {
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this.activities.forEach(activity -> tx().lock(activity));
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ActivityMap activityMap = tx().getActivityMap();
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this.activities.forEach(activity -> {
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if (!activityMap.hasElement(tx(), activity.getType(), activity.getId())) {
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String msg = "The Activity {0} can not be removed as it does not exist!!";
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msg = MessageFormat.format(msg, activity.getLocator());
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throw new StrolchException(msg);
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}
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activityMap.remove(tx(), activity);
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this.removed.add(activity);
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});
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}
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@Override
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public void undo() {
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if (tx().isRollingBack() && !this.removed.isEmpty()) {
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this.activities.forEach(activity -> {
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if (tx().isVersioningEnabled())
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tx().getActivityMap().undoVersion(tx(), activity);
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else
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tx().getActivityMap().add(tx(), activity);
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});
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}
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}
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}
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