flowable 的使用

1.手动通过数据库删除所有涉及流程的数据

# 需按以下顺序执行，否则存在外键阻止删除
DELETE FROM ACT_RU_TASK;
DELETE FROM ACT_RU_VARIABLE;
DELETE FROM ACT_RU_IDENTITYLINK;
DELETE FROM ACT_RU_JOB;
DELETE FROM ACT_RU_TIMER_JOB;
DELETE FROM ACT_RU_DEADLETTER_JOB;
DELETE FROM ACT_RU_EXECUTION;
DELETE FROM ACT_RU_SUSPENDED_JOB;
DELETE FROM ACT_RU_EVENT_SUBSCR;
DELETE FROM ACT_HI_PROCINST;
DELETE FROM ACT_HI_ACTINST;
DELETE FROM ACT_HI_TASKINST;
DELETE FROM ACT_HI_VARINST;
DELETE FROM ACT_HI_DETAIL;
DELETE FROM ACT_HI_IDENTITYLINK;
DELETE FROM ACT_HI_ATTACHMENT;
DELETE FROM ACT_HI_COMMENT;

2.通过代码删除指定流程数据

注意：如果配置文件 flowable.history-level: audit 的话，表数据是不会删的（逻辑删除），只有设置为 full 的时候，调用以下方法才会清除 ACT_XXX 流程关联表数据（物理删除）。

flowable:
  history-level: full # full：保存历史数据的最高级别，可保存全部流程相关细节，包括流程流转各节点参数，audit

public void deleteProcess(String processInstanceId) {
        // 1. 先查是否运行中
        ProcessInstance pi = runtimeService.createProcessInstanceQuery()
                .processInstanceId(processInstanceId)
                .singleResult();

        if (pi != null) {
            // 运行中 → 直接删（包含历史）
            runtimeService.deleteProcessInstance(processInstanceId, "删除流程");
        } else {
            // 已结束 → 删历史
            historyService.deleteHistoricProcessInstance(processInstanceId);
        }
    }

3.指定流程审批人及审批时间

注意：指定审批时间不能并发，应为配置是影响全局的，如果并发下，拿到的全局配置系统时间会存在错乱的问题。

# 指定审批人
@Resource
private TaskService taskService;

taskService.setAssignee(user.getId().toString());
# 接下来直接用这个 user 走审批即可

# 指定审批时间
@Resource
private ProcessEngineConfiguration processEngineConfiguration;

Date rejectDate = new Date();
processEngineConfiguration.getClock().setCurrentTime(rejectDate);