/* 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.process;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.engine.HistoryService;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.history.HistoricProcessInstance;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.explorer.ExplorerApp;
import org.activiti.explorer.data.AbstractLazyLoadingQuery;
import com.vaadin.data.Item;
import com.vaadin.data.util.ObjectProperty;
/**
* @author Frederik Heremans
*/
public class MyProcessInstancesListQuery extends AbstractLazyLoadingQuery {
protected transient HistoryService historyService;
protected transient RepositoryService repositoryService;
protected Map<String, ProcessDefinition> cachedProcessDefinitions;
public MyProcessInstancesListQuery(HistoryService historyService, RepositoryService repositoryService) {
this.historyService = historyService;
this.repositoryService = repositoryService;
cachedProcessDefinitions = new HashMap<String, ProcessDefinition>();
}
public List<Item> loadItems(int start, int count) {
List<HistoricProcessInstance> processInstances = historyService
.createHistoricProcessInstanceQuery()
.startedBy(ExplorerApp.get().getLoggedInUser().getId())
.unfinished()
.list();
List<Item> items = new ArrayList<Item>();
for (HistoricProcessInstance processInstance : processInstances) {
items.add(createItem(processInstance));
}
return items;
}
public Item loadSingleResult(String id) {
HistoricProcessInstance processInstance = historyService.createHistoricProcessInstanceQuery()
.startedBy(ExplorerApp.get().getLoggedInUser().getId())
.unfinished()
.processInstanceId(id).singleResult();
if (processInstance != null) {
return createItem(processInstance);
}
return null;
}
protected ProcessInstanceItem createItem(HistoricProcessInstance processInstance) {
ProcessInstanceItem item = new ProcessInstanceItem();
item.addItemProperty("id", new ObjectProperty<String>(processInstance.getId(), String.class));
ProcessDefinition processDefinition = getProcessDefinition(processInstance.getProcessDefinitionId());
String itemName = getProcessDisplayName(processDefinition) + " (" + processInstance.getId() + ")"
+ (processInstance.getBusinessKey() != null? processInstance.getBusinessKey() : "");
item.addItemProperty("name", new ObjectProperty<String>(itemName, String.class));
return item;
}
protected String getProcessDisplayName(ProcessDefinition processDefinition) {
if(processDefinition.getName() != null) {
return processDefinition.getName();
} else {
return processDefinition.getKey();
}
}
protected ProcessDefinition getProcessDefinition(String id) {
ProcessDefinition processDefinition = cachedProcessDefinitions.get(id);
if(processDefinition == null) {
processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(id).singleResult();
cachedProcessDefinitions.put(id, processDefinition);
}
return processDefinition;
}
public int size() {
return (int) historyService.createHistoricProcessInstanceQuery()
.startedBy(ExplorerApp.get().getLoggedInUser().getId())
.unfinished()
.count();
}
public void setSorting(Object[] propertyId, boolean[] ascending) {
throw new UnsupportedOperationException();
}
}