/* 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.List;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.explorer.data.AbstractLazyLoadingQuery;
import com.vaadin.data.Item;
import com.vaadin.data.util.PropertysetItem;
/**
* @author Joram Barrez
*/
public class ProcessDefinitionListQuery extends AbstractLazyLoadingQuery {
protected RepositoryService repositoryService;
protected ProcessDefinitionFilter filter;
public ProcessDefinitionListQuery(RepositoryService repositoryService, ProcessDefinitionFilter filter) {
this.repositoryService = repositoryService;
this.filter = filter;
}
public List<Item> loadItems(int start, int count) {
List<ProcessDefinition> processDefinitions = filter.getQuery(repositoryService).listPage(start, count);
List<Item> items = new ArrayList<Item>();
for (ProcessDefinition processDefinition : processDefinitions) {
items.add(filter.createItem(processDefinition));
}
return items;
}
public Item loadSingleResult(String id) {
ProcessDefinition definition = repositoryService.createProcessDefinitionQuery().processDefinitionId(id).singleResult();
if (definition != null) {
return filter.createItem(definition);
}
return null;
}
public int size() {
return (int) filter.getCountQuery(repositoryService).count();
}
public void setSorting(Object[] propertyId, boolean[] ascending) {
throw new UnsupportedOperationException();
}
public static class ProcessDefinitionListItem extends PropertysetItem implements Comparable<ProcessDefinitionListItem>{
private static final long serialVersionUID = 1L;
public int compareTo(ProcessDefinitionListItem other) {
// process definitions are ordered by name (see #loadItems in query)
String name = (String) getItemProperty("name").getValue();
String otherName = (String) other.getItemProperty("name").getValue();
int comparison = name.compareTo(otherName);
// Name is not unique for process definition
// But the list is sorted on process definition key also, so we can use it to compare if the name is equal
if (comparison != 0) {
return comparison;
} else {
String key = (String) getItemProperty("key").getValue();
String otherKey = (String) other.getItemProperty("key").getValue();
return key.compareTo(otherKey);
}
}
}
}