Does the camunda engine provides an API to query all running instances of a certain process? Does this query includes suspended instances too?
You can query all running process instance of a process using the following code:
package org.camunda.bpm;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.RepositoryService;
import org.camunda.bpm.engine.RuntimeService;
import org.camunda.bpm.engine.repository.ProcessDefinition;
import org.camunda.bpm.engine.runtime.ProcessInstance;
import java.util.List;
public class AllRunningProcessInstances {
public List<ProcessInstance> getAllRunningProcessInstances(String processDefinitionName) {
// get process engine and services
ProcessEngine processEngine = BpmPlatform.getDefaultProcessEngine();
RuntimeService runtimeService = processEngine.getRuntimeService();
RepositoryService repositoryService = processEngine.getRepositoryService();
// query for latest process definition with given name
ProcessDefinition myProcessDefinition =
repositoryService.createProcessDefinitionQuery()
.processDefinitionName(processDefinitionName)
.latestVersion()
.singleResult();
// list all running/unsuspended instances of the process
List<ProcessInstance> processInstances =
runtimeService.createProcessInstanceQuery()
.processDefinitionId(myProcessDefinition.getId())
.active() // we only want the unsuspended process instances
.list();
return processInstances;
}
}
If you want to include even suspended process instance, then just delete the .active() line.