{
    "table_name": "approval_task",
    "fields": [
        {
            "name": "id",
            "type": "varchar(32)",
            "not_null": true,
            "comment": "主键ID"
        },
        {
            "name": "instance_id",
            "type": "varchar(32)",
            "not_null": true,
            "comment": "所属实例ID"
        },
        {
            "name": "step_id",
            "type": "varchar(32)",
            "not_null": true,
            "comment": "审批步骤ID"
        },
        {
            "name": "assignee_id",
            "type": "varchar(32)",
            "comment": "审批人ID"
        },
        {
            "name": "status",
            "type": "varchar(20)",
            "comment": "状态: pending/approved/rejected"
        },
        {
            "name": "comment",
            "type": "varchar(1000)",
            "comment": "审批意见"
        },
        {
            "name": "org_id",
            "type": "varchar(32)",
            "comment": "组织ID"
        },
        {
            "name": "assigned_at",
            "type": "timestamp",
            "comment": "分配时间"
        },
        {
            "name": "completed_at",
            "type": "timestamp",
            "comment": "完成时间"
        }
    ],
    "indexes": [
        {
            "name": "idx_task_instance",
            "fields": [
                "instance_id"
            ],
            "type": "normal"
        },
        {
            "name": "idx_task_assignee",
            "fields": [
                "assignee_id"
            ],
            "type": "normal"
        },
        {
            "name": "idx_task_status",
            "fields": [
                "status"
            ],
            "type": "normal"
        }
    ],
    "codes": [
        {
            "key": "pending",
            "name": "待审批"
        },
        {
            "key": "approved",
            "name": "已通过"
        },
        {
            "key": "rejected",
            "name": "已驳回"
        }
    ],
    "summary": [
        {
            "name": "approval_task",
            "title": "审批任务",
            "primary": "id",
            "catelog": "entity"
        }
    ]
}