/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.activiti.explorer.ui.task.data;
import java.util.ArrayList;
import java.util.List;
import org.activiti.engine.HistoryService;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.history.HistoricTaskInstance;
import org.activiti.engine.history.HistoricTaskInstanceQuery;
import org.activiti.explorer.ExplorerApp;
import org.activiti.explorer.data.AbstractLazyLoadingQuery;
import org.activiti.explorer.data.LazyLoadingQuery;
import com.vaadin.data.Item;
/**
* {@link LazyLoadingQuery} for the Archived tasks page.
*
* @author Joram Barrez
*/
public class ArchivedListQuery extends AbstractLazyLoadingQuery {
protected String userId;
protected HistoryService historyService;
public ArchivedListQuery() {
this.userId = ExplorerApp.get().getLoggedInUser().getId();
this.historyService = ProcessEngines.getDefaultProcessEngine().getHistoryService();
}
public int size() {
return (int) createQuery().count();
}
public List<Item> loadItems(int start, int count) {
List<HistoricTaskInstance> historicTaskInstances = createQuery().listPage(start, count);
List<Item> items = new ArrayList<Item>();
for (HistoricTaskInstance historicTaskInstance : historicTaskInstances) {
items.add(new TaskListItem(historicTaskInstance));
}
return items;
}
public Item loadSingleResult(String id) {
return new TaskListItem(createQuery().taskId(id).singleResult());
}
public void setSorting(Object[] propertyIds, boolean[] ascending) {
throw new UnsupportedOperationException();
}
protected HistoricTaskInstanceQuery createQuery() {
return historyService.createHistoricTaskInstanceQuery().taskOwner(userId).finished();
}
}