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Camunda context switch
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| package org.camunda.bpm.extension.graphql.resolvers; | |
| import com.coxautodev.graphql.tools.GraphQLResolver; | |
| import org.camunda.bpm.BpmPlatform; | |
| import org.camunda.bpm.application.ProcessApplicationContext; | |
| import org.camunda.bpm.application.ProcessApplicationReference; | |
| import org.camunda.bpm.engine.*; | |
| import org.camunda.bpm.engine.history.HistoricVariableInstance; | |
| import org.camunda.bpm.engine.identity.User; | |
| import org.camunda.bpm.engine.impl.application.ProcessApplicationManager; | |
| import org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl; | |
| import org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity; | |
| import org.camunda.bpm.engine.impl.persistence.entity.TaskEntity; | |
| import org.camunda.bpm.engine.repository.ProcessDefinition; | |
| import org.camunda.bpm.engine.runtime.ProcessInstance; | |
| import org.camunda.bpm.engine.rest.util.ApplicationContextPathUtil; | |
| import org.camunda.bpm.engine.variable.value.TypedValue; | |
| import org.springframework.stereotype.Component; | |
| import java.util.List; | |
| @Component | |
| public class TaskEntityResolver implements GraphQLResolver<TaskEntity> { | |
| private ProcessEngine pe; | |
| private ProcessEngineConfigurationImpl pec; | |
| private RepositoryService repositoryService; | |
| private RuntimeService runtimeService; | |
| private IdentityService identityService; | |
| public TaskEntityResolver() { | |
| //super(TaskEntity.class); | |
| pe = BpmPlatform.getDefaultProcessEngine(); | |
| if (pe == null) { | |
| pe = ProcessEngines.getDefaultProcessEngine(false); | |
| } | |
| pec = (ProcessEngineConfigurationImpl) pe.getProcessEngineConfiguration(); | |
| repositoryService = pe.getRepositoryService(); | |
| runtimeService = pe.getRuntimeService(); | |
| identityService = pe.getIdentityService(); | |
| } | |
| public ProcessDefinition processDefinition(TaskEntity taskEntity) { | |
| ... | |
| } | |
| public ProcessInstance processInstance (TaskEntity taskEntity) { | |
| ... | |
| } | |
| public ExecutionEntity executionEntity(TaskEntity taskEntity) { | |
| ... | |
| } | |
| public User assignee(TaskEntity taskEntity) { | |
| ... | |
| } | |
| public String contextPath(TaskEntity taskEntity) { | |
| ... | |
| } | |
| public List<HistoricVariableInstance> variables(TaskEntity taskEntity) { | |
| List<HistoricVariableInstance> variables = pe.getHistoryService().createHistoricVariableInstanceQuery().processInstanceId(taskEntity.getProcessInstanceId()).list(); | |
| String pdid = taskEntity.getProcessDefinitionId(); | |
| String executionId = taskEntity.getExecutionId(); | |
| ProcessDefinition pd = repositoryService.getProcessDefinition(pdid); | |
| String deploymentId = pd.getDeploymentId(); | |
| ProcessApplicationManager processApplicationManager = pec.getProcessApplicationManager(); | |
| ProcessApplicationReference targetProcessApplication = processApplicationManager.getProcessApplicationForDeployment(deploymentId); | |
| String processApplicationName = targetProcessApplication.getName(); // e.g. "creditDecisionApplication" - the name of the Java Class of the Process Application | |
| // from https://github.com/camunda/camunda-bpm-platform/blob/master/engine/src/main/java/org/camunda/bpm/application/ProcessApplicationContext.java | |
| // Example using a variable that is serialized with a Camunda Spin data format: | |
| // * | |
| // * <pre> | |
| // * try { | |
| // * ProcessApplicationContext.setCurrentProcessApplication("someProcessApplication"); | |
| // * runtimeService.setVariable( | |
| // * "processInstanceId", | |
| // * "variableName", | |
| // * Variables.objectValue(anObject).serializationDataFormat(SerializationDataFormats.JSON).create()); | |
| // * } finally { | |
| // * ProcessApplicationContext.clear(); | |
| // * } | |
| // * </pre> | |
| try { | |
| ProcessApplicationContext.setCurrentProcessApplication(processApplicationName); | |
| for (HistoricVariableInstance variableInstance : variables) { | |
| String typedName = variableInstance.getTypeName(); | |
| String name = variableInstance.getName(); | |
| TypedValue typedValue = variableInstance.getTypedValue(); | |
| Object variable = runtimeService.getVariable(executionId,name); | |
| System.out.println(variable); | |
| } | |
| } finally { | |
| ProcessApplicationContext.clear(); | |
| } | |
| return variables; | |
| } | |
| } |
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