/* 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.camunda.bpm.engine.rest.impl;
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.UriInfo;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.rest.ProcessInstanceRestService;
import org.camunda.bpm.engine.rest.dto.CountResultDto;
import org.camunda.bpm.engine.rest.dto.runtime.ProcessInstanceDto;
import org.camunda.bpm.engine.rest.dto.runtime.ProcessInstanceQueryDto;
import org.camunda.bpm.engine.rest.dto.runtime.ProcessInstanceSuspensionStateDto;
import org.camunda.bpm.engine.rest.exception.InvalidRequestException;
import org.camunda.bpm.engine.rest.sub.runtime.ProcessInstanceResource;
import org.camunda.bpm.engine.rest.sub.runtime.impl.ProcessInstanceResourceImpl;
import org.camunda.bpm.engine.runtime.ProcessInstance;
import org.camunda.bpm.engine.runtime.ProcessInstanceQuery;
import org.codehaus.jackson.map.ObjectMapper;
public class ProcessInstanceRestServiceImpl extends AbstractRestProcessEngineAware implements
ProcessInstanceRestService {
public ProcessInstanceRestServiceImpl(String engineName, ObjectMapper objectMapper) {
super(engineName, objectMapper);
}
@Override
public List<ProcessInstanceDto> getProcessInstances(
UriInfo uriInfo, Integer firstResult, Integer maxResults) {
ProcessInstanceQueryDto queryDto = new ProcessInstanceQueryDto(getObjectMapper(), uriInfo.getQueryParameters());
return queryProcessInstances(queryDto, firstResult, maxResults);
}
@Override
public List<ProcessInstanceDto> queryProcessInstances(
ProcessInstanceQueryDto queryDto, Integer firstResult, Integer maxResults) {
ProcessEngine engine = getProcessEngine();
queryDto.setObjectMapper(getObjectMapper());
ProcessInstanceQuery query = queryDto.toQuery(engine);
List<ProcessInstance> matchingInstances;
if (firstResult != null || maxResults != null) {
matchingInstances = executePaginatedQuery(query, firstResult, maxResults);
} else {
matchingInstances = query.list();
}
List<ProcessInstanceDto> instanceResults = new ArrayList<ProcessInstanceDto>();
for (ProcessInstance instance : matchingInstances) {
ProcessInstanceDto resultInstance = ProcessInstanceDto.fromProcessInstance(instance);
instanceResults.add(resultInstance);
}
return instanceResults;
}
private List<ProcessInstance> executePaginatedQuery(ProcessInstanceQuery query, Integer firstResult, Integer maxResults) {
if (firstResult == null) {
firstResult = 0;
}
if (maxResults == null) {
maxResults = Integer.MAX_VALUE;
}
return query.listPage(firstResult, maxResults);
}
@Override
public CountResultDto getProcessInstancesCount(UriInfo uriInfo) {
ProcessInstanceQueryDto queryDto = new ProcessInstanceQueryDto(getObjectMapper(), uriInfo.getQueryParameters());
return queryProcessInstancesCount(queryDto);
}
@Override
public CountResultDto queryProcessInstancesCount(ProcessInstanceQueryDto queryDto) {
ProcessEngine engine = getProcessEngine();
queryDto.setObjectMapper(getObjectMapper());
ProcessInstanceQuery query = queryDto.toQuery(engine);
long count = query.count();
CountResultDto result = new CountResultDto();
result.setCount(count);
return result;
}
@Override
public ProcessInstanceResource getProcessInstance(String processInstanceId) {
return new ProcessInstanceResourceImpl(getProcessEngine(), processInstanceId, getObjectMapper());
}
public void updateSuspensionState(ProcessInstanceSuspensionStateDto dto) {
if (dto.getProcessInstanceId() != null) {
String message = "Either processDefinitionId or processDefinitionKey can be set to update the suspension state.";
throw new InvalidRequestException(Status.BAD_REQUEST, message);
}
dto.updateSuspensionState(getProcessEngine());
}
}