{
    "summary": [
        {
            "name": "pipeline_artifacts",
            "title": "步骤产物表",
            "primary": ["id"],
            "catelog": "entity"
        }
    ],
    "fields": [
        {"name": "id", "title": "主键ID", "type": "str", "length": 32, "nullable": "no"},
        {"name": "task_id", "title": "任务ID", "type": "str", "length": 32, "nullable": "no"},
        {"name": "version", "title": "版本号", "type": "int", "nullable": "no", "default": "1"},
        {"name": "step_name", "title": "步骤名称", "type": "str", "length": 64, "nullable": "no"},
        {"name": "io_type", "title": "产物类型(input/output)", "type": "str", "length": 16, "nullable": "no"},
        {"name": "data", "title": "产物数据(JSON)", "type": "longtext"},
        {"name": "saved_at", "title": "保存时间", "type": "timestamp", "nullable": "no"}
    ],
    "indexes": [
        {"name": "idx_pa_task_ver", "idxtype": "index", "idxfields": ["task_id", "version"]},
        {"name": "idx_pa_step", "idxtype": "index", "idxfields": ["step_name"]},
        {"name": "idx_pa_lookup", "idxtype": "unique", "idxfields": ["task_id", "version", "step_name", "io_type"]}
    ],
    "codes": [
        {"field": "io_type", "table": "appcodes_kv", "valuefield": "k", "textfield": "v", "cond": "parentid='io_type'"}
    ]
}