/* 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.UriInfo;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.rest.VariableInstanceRestService;
import org.camunda.bpm.engine.rest.dto.CountResultDto;
import org.camunda.bpm.engine.rest.dto.runtime.VariableInstanceDto;
import org.camunda.bpm.engine.rest.dto.runtime.VariableInstanceQueryDto;
import org.camunda.bpm.engine.rest.sub.runtime.VariableInstanceResource;
import org.camunda.bpm.engine.rest.sub.runtime.impl.VariableInstanceResourceImpl;
import org.camunda.bpm.engine.runtime.VariableInstance;
import org.camunda.bpm.engine.runtime.VariableInstanceQuery;
import org.codehaus.jackson.map.ObjectMapper;
public class VariableInstanceRestServiceImpl extends AbstractRestProcessEngineAware implements VariableInstanceRestService {
public VariableInstanceRestServiceImpl(String engineName, ObjectMapper objectMapper) {
super(engineName, objectMapper);
}
@Override
public VariableInstanceResource getVariableInstance(String id) {
return new VariableInstanceResourceImpl(id, processEngine);
}
@Override
public List<VariableInstanceDto> getVariableInstances(UriInfo uriInfo, Integer firstResult, Integer maxResults, boolean deserializeObjectValues) {
VariableInstanceQueryDto queryDto = new VariableInstanceQueryDto(getObjectMapper(), uriInfo.getQueryParameters());
return queryVariableInstances(queryDto, firstResult, maxResults, deserializeObjectValues);
}
@Override
public List<VariableInstanceDto> queryVariableInstances(VariableInstanceQueryDto queryDto, Integer firstResult, Integer maxResults, boolean deserializeObjectValues) {
ProcessEngine engine = getProcessEngine();
queryDto.setObjectMapper(getObjectMapper());
VariableInstanceQuery query = queryDto.toQuery(engine);
// disable binary fetching by default.
query.disableBinaryFetching();
// disable custom object fetching by default. Cannot be done to not break existing API
if (!deserializeObjectValues) {
query.disableCustomObjectDeserialization();
}
List<VariableInstance> matchingInstances;
if (firstResult != null || maxResults != null) {
matchingInstances = executePaginatedQuery(query, firstResult, maxResults);
} else {
matchingInstances = query.list();
}
List<VariableInstanceDto> instanceResults = new ArrayList<VariableInstanceDto>();
for (VariableInstance instance : matchingInstances) {
VariableInstanceDto resultInstance = VariableInstanceDto.fromVariableInstance(instance);
instanceResults.add(resultInstance);
}
return instanceResults;
}
private List<VariableInstance> executePaginatedQuery(VariableInstanceQuery 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 getVariableInstancesCount(UriInfo uriInfo) {
VariableInstanceQueryDto queryDto = new VariableInstanceQueryDto(getObjectMapper(), uriInfo.getQueryParameters());
return queryVariableInstancesCount(queryDto);
}
@Override
public CountResultDto queryVariableInstancesCount(VariableInstanceQueryDto queryDto) {
ProcessEngine engine = getProcessEngine();
queryDto.setObjectMapper(getObjectMapper());
VariableInstanceQuery query = queryDto.toQuery(engine);
long count = query.count();
CountResultDto result = new CountResultDto();
result.setCount(count);
return result;
}
}