Package org.camunda.bpm.engine.rest.sub.runtime.impl

Source Code of org.camunda.bpm.engine.rest.sub.runtime.impl.ProcessInstanceResourceImpl

/* 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.sub.runtime.impl;

import javax.ws.rs.core.Response.Status;

import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.RuntimeService;
import org.camunda.bpm.engine.rest.dto.runtime.ActivityInstanceDto;
import org.camunda.bpm.engine.rest.dto.runtime.ProcessInstanceDto;
import org.camunda.bpm.engine.rest.dto.runtime.ProcessInstanceSuspensionStateDto;
import org.camunda.bpm.engine.rest.exception.InvalidRequestException;
import org.camunda.bpm.engine.rest.sub.VariableResource;
import org.camunda.bpm.engine.rest.sub.runtime.ProcessInstanceResource;
import org.camunda.bpm.engine.runtime.ActivityInstance;
import org.camunda.bpm.engine.runtime.ProcessInstance;
import org.codehaus.jackson.map.ObjectMapper;

public class ProcessInstanceResourceImpl implements ProcessInstanceResource {

  protected ProcessEngine engine;
  protected String processInstanceId;
  protected ObjectMapper objectMapper;

  public ProcessInstanceResourceImpl(ProcessEngine engine, String processInstanceId, ObjectMapper objectMapper) {
    this.engine = engine;
    this.processInstanceId = processInstanceId;
    this.objectMapper = objectMapper;
  }

  @Override
  public ProcessInstanceDto getProcessInstance() {
    RuntimeService runtimeService = engine.getRuntimeService();
    ProcessInstance instance = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();

    if (instance == null) {
      throw new InvalidRequestException(Status.NOT_FOUND, "Process instance with id " + processInstanceId + " does not exist");
    }

    ProcessInstanceDto result = ProcessInstanceDto.fromProcessInstance(instance);
    return result;
  }

  @Override
  public void deleteProcessInstance() {
    RuntimeService runtimeService = engine.getRuntimeService();
    try {
      runtimeService.deleteProcessInstance(processInstanceId, null);
    } catch (ProcessEngineException e) {
      throw new InvalidRequestException(Status.NOT_FOUND, e, "Process instance with id " + processInstanceId + " does not exist");
    }

  }

  @Override
  public VariableResource getVariablesResource() {
    return new ExecutionVariablesResource(engine, processInstanceId, true, objectMapper);
  }

  @Override
  public ActivityInstanceDto getActivityInstanceTree() {
    RuntimeService runtimeService = engine.getRuntimeService();

    ActivityInstance activityInstance = null;

    try {
      activityInstance = runtimeService.getActivityInstance(processInstanceId);
    } catch (ProcessEngineException e) {
      throw new InvalidRequestException(Status.INTERNAL_SERVER_ERROR, e, e.getMessage());
    }

    if (activityInstance == null) {
      throw new InvalidRequestException(Status.NOT_FOUND, "Process instance with id " + processInstanceId + " does not exist");
    }

    ActivityInstanceDto result = ActivityInstanceDto.fromActivityInstance(activityInstance);
    return result;
  }

  public void updateSuspensionState(ProcessInstanceSuspensionStateDto dto) {
    dto.setProcessInstanceId(processInstanceId);
    dto.updateSuspensionState(engine);
  }
}
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