C#开发BIMFACE系列20 服务端API之获取模型数据5：批量获取构件属性

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　　在《C#开发BIMFACE系列18 服务端API之获取模型数据3：获取构件属性》中介绍了获取单个文件/模型的单个构建的属性，本篇介绍如何一次性获取多个构建的属性。

请求地址：POST https://api.bimface.com/data/v2/files/{fileId}/elements

说明：支持查询模型属性重写后多个构件的属性，需要设置请求参数includeOverrides的值为true

参数：

 其中 ElementPropertyFilterRequest 类如下：

/// <summary>
///   批量获取构件属性的请求参数
/// </summary>
[Serializable]
public class ElementPropertyFilterRequest
{
    /// <summary>
    ///  【必填】构建ID数组。例如： [ "313154", "313047" ]
    /// </summary>
    [JsonProperty("elementIds")]
    public string[] ElementIds { get; set; }

    /// <summary>
    /// 【非必填】过来条件
    /// </summary>
    [JsonProperty("filter", NullValueHandling = NullValueHandling.Ignore)]
    public GroupAndKeysPair[] Filters { get; set; }
}

[Serializable]
public class GroupAndKeysPair
{
    /// <summary>
    ///  分组名称。例如：default、shape、size
    /// </summary>
    [JsonProperty("group")]
    public string Group { get; set; }

    /// <summary>
    ///  关键字数组。例如： [ "length", "width", "a" ]
    /// </summary>
    [JsonProperty("keys", NullValueHandling = NullValueHandling.Ignore)]
    public string[] Keys { get; set; }
}

请求 path(示例)：https://api.bimface.com/data/v2/files/1211223382064960/elements

若需查询重写后的构件属性，请求示例为

https://api.bimface.com/data/v2/files/1211223382064960/elements?includeOverrides=true

请求 header(示例)："Authorization: Bearer dc671840-bacc-4dc5-a134-97c1918d664b"

请求 body(示例)：

{
  "elementIds" : [ "313154", "313047" ],
  "filter" : [ {
    "group" : "default"
  }, {
    "group" : "shape"
  }, {
    "group" : "size",
    "keys" : [ "length", "width", "a" ]
  } ]
}

HTTP响应示例(200)：

{
  "code" : "success",
  "data" : [ {
    "boundingBox" : {
      "max" : {
        "x" : -4938.068482562385,
        "y" : -3201.59397858169,
        "z" : 0.0
      },
      "min" : {
        "x" : -4938.068482562385,
        "y" : -3201.59397858169,
        "z" : 0.0
      }
    },
    "elementId" : "313052",
    "familyGuid" : "000222",
    "guid" : "79d547c1-5dbf-4e6a-811d-951cf37b29da-0004c6dc",
    "name" : "norm - 150mm",
    "properties" : [ {
      "group" : "dimension",
      "items" : [ {
        "code" : "perimeter",
        "extension" : "object",
        "key" : "perimeter",
        "orderNumber" : 0,
        "unit" : "mm",
        "value" : 17200,
        "valueType" : 2
      } ]
    } ]
  } ],
  "message" : ""
}

该返回结果中的data部分是一个数组，对应多个构建的属性。与《C#开发BIMFACE系列18 服务端API之获取模型数据3：获取构件属性》中返回的结果相同。

C#实现方法：

/// <summary>
///  批量获取单个模型的多个构件属性
/// </summary>
/// <param name="accessToken">令牌</param>
/// <param name="fileId">【必填】代表该单模型的文件ID</param>
/// <param name="request">【必填】请求过滤参数</param>
/// <param name="includeOverrides">【非必填】是否查询修改的属性</param>
/// <returns></returns>
public virtual SingleModelMultipleElementsProperties GetSingleModelMultipleElementsProperties(string accessToken, long fileId, ElementPropertyFilterRequest request, bool? includeOverrides = null)
{
    if (request == null)
    {
        throw new ArgumentException("参数 request 不能为null ！");
    }

    // POST https://api.bimface.com/data/v2/files/{fileId}/elements
    string url = string.Format(BimfaceConstants.API_HOST + "/data/v2/files/{0}/elements", fileId);
    if (includeOverrides != null)
    {
        url = url + "?includeOverrides=" + includeOverrides;
    }

    string data = request.SerializeToJson();

    BimFaceHttpHeaders headers = new BimFaceHttpHeaders();
    headers.AddOAuth2Header(accessToken);

    try
    {
        SingleModelMultipleElementsProperties response;

        HttpManager httpManager = new HttpManager(headers);
        HttpResult httpResult = httpManager.Post(url, data);
        if (httpResult.Status == HttpResult.STATUS_SUCCESS)
        {
            response = httpResult.Text.DeserializeJsonToObject<SingleModelMultipleElementsProperties>();
        }
        else
        {
            response = new SingleModelMultipleElementsProperties
            {
                Message = httpResult.RefText
            };
        }

        return response;
    }
    catch (Exception ex)
    {
        throw new Exception("[批量获取构件属性]发生异常！", ex);
    }
}

其中调用到的 httpManager.Post() 方法，请参考《C# HTTP系列》

 其中返回结果类  SingleModelMultipleElementsProperties 定义如下：

/// <summary>
/// 批量获取单个模型的多个构件属性返回的结果类
/// </summary>
[Serializable]
public class SingleModelMultipleElementsProperties : GeneralResponse<List<SingleModelSingleElementEntity>>
{

}

测试

在BIMFACE的控制台中可以看到我们上传的文件列表，共计2个文件。模型状态均为转换成功。

以“01_BIMFACE示例文件-Revit模型.rvt”为例来测试。

其中使用了 300067,282979 这2个构建ID。查询的构建属性完整结果如下：

success
elementId:300067,282979

SingleModelSingleElementEntity： 
[boundingBox=[max=[x=5838.783, y=4387.716, z=6000], 
              min=[x=5788.783, y=4237.716, z=5475]
             ], 
 elementId=300067, 
 familyGuid=2d99307a-66cd-4439-b173-5c88d252416e-00002122, 
 Guid=89c90034-40ae-423a-8935-8f5624db86c1-00049423， 
 name=50 x 150 mm, 
 Properties=[group=基本属性, 
             items= [code=, extension=, key=specialty, orderNumber=,unit=,value=,valueType=]
                    [code=, extension=, key=floor, orderNumber=,unit=,value=F2,valueType=]
                    [code=, extension=, key=categoryId, orderNumber=,unit=,value=-2000171,valueType=]
                    [code=, extension=, key=categoryName, orderNumber=,unit=,value=幕墙竖梃,valueType=]
                    [code=, extension=, key=family, orderNumber=,unit=,value=矩形竖梃,valueType=]
                    [code=, extension=, key=familyId, orderNumber=,unit=,value=,valueType=]
                    [code=, extension=, key=familyType, orderNumber=,unit=,value=50 x 150 mm,valueType=]
                    [code=, extension=, key=familyTypeId, orderNumber=,unit=,value=8486,valueType=]
                    [code=, extension=, key=systemType, orderNumber=,unit=,value=,valueType=]
                    [code=, extension=, key=building, orderNumber=,unit=,value=,valueType=]
            ]
            [group=尺寸标注, 
             items=[code=, extension=, key=边 1 上的宽度, orderNumber=,unit=mm,value=25,valueType=2]
                   [code=, extension=, key=边 2 上的宽度, orderNumber=,unit=mm,value=25,valueType=2]
                   [code=, extension=, key=长度, orderNumber=,unit=mm,value=525,valueType=2]
            ]
            [group=材质和装饰, 
             items=[code=, extension=, key=材质, orderNumber=,unit=,value=金属 - 铝,valueType=4]
            ]
            [group=构造, 
             items=[code=, extension=, key=位置, orderNumber=,unit=,value=垂直于面,valueType=4]
                   [code=, extension=, key=厚度, orderNumber=,unit=mm,value=150,valueType=2]
                   [code=, extension=, key=角竖梃, orderNumber=,unit=,value=False,valueType=1]
                   [code=, extension=, key=轮廓, orderNumber=,unit=,value=默认,valueType=4]
            ]
            [group=标识数据, 
             items=[code=, extension=, key=OmniClass 标题, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=OmniClass 编号, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=URL, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=代码名称, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=制造商, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=图像, orderNumber=,unit=,value=,valueType=4]
                    [code=, extension=, key=型号, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=成本, orderNumber=,unit=,value=,valueType=2]
                    [code=, extension=, key=标记, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=注释, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=注释记号, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=类型图像, orderNumber=,unit=,value=,valueType=4]
                    [code=, extension=, key=类型标记, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=类型注释, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=说明, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=部件代码, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=部件说明, orderNumber=,unit=,value=,valueType=3]
            ]
            [group=阶段化, 
             items=[code=, extension=, key=创建的阶段, orderNumber=,unit=,value=新构造,valueType=4]
                   [code=, extension=, key=拆除的阶段, orderNumber=,unit=,value=无,valueType=4]
            ]
            [group=限制条件, 
             items=[code=, extension=, key=偏移量, orderNumber=,unit=mm,value=0,valueType=2]
                   [code=, extension=, key=角度, orderNumber=,unit=°,value=0.00,valueType=2]
            ]
]

SingleModelSingleElementEntity： 
[boundingBox=[max=[x=-2066.217, y=-7714.284, z=3175], 
              min=[x=-2116.217, y=-7864.284, z=2750]
             ], 
 elementId=282979, 
 familyGuid=2d99307a-66cd-4439-b173-5c88d252416e-00002122, 
 Guid=0438595c-b6fe-4e10-9b43-4c629826282c-00045163， 
 name=50 x 150 mm, 
 Properties=[group=基本属性, 
             items=[code=, extension=, key=specialty, orderNumber=,unit=,value=,valueType=]
                    [code=, extension=, key=floor, orderNumber=,unit=,value=地坪,valueType=]
                    [code=, extension=, key=categoryId, orderNumber=,unit=,value=-2000171,valueType=]
                    [code=, extension=, key=categoryName, orderNumber=,unit=,value=幕墙竖梃,valueType=]
                    [code=, extension=, key=family, orderNumber=,unit=,value=矩形竖梃,valueType=]
                    [code=, extension=, key=familyId, orderNumber=,unit=,value=,valueType=]
                    [code=, extension=, key=familyType, orderNumber=,unit=,value=50 x 150 mm,valueType=]
                    [code=, extension=, key=familyTypeId, orderNumber=,unit=,value=8486,valueType=]
                    [code=, extension=, key=systemType, orderNumber=,unit=,value=,valueType=]
                    [code=, extension=, key=building, orderNumber=,unit=,value=,valueType=]
            ]
            [group=尺寸标注, 
             items=[code=, extension=, key=边 1 上的宽度, orderNumber=,unit=mm,value=25,valueType=2]
                    [code=, extension=, key=边 2 上的宽度, orderNumber=,unit=mm,value=25,valueType=2]
                    [code=, extension=, key=长度, orderNumber=,unit=mm,value=425,valueType=2]
            ]
            [group=材质和装饰, 
             items=[code=, extension=, key=材质, orderNumber=,unit=,value=金属 - 铝,valueType=4]
            ]
            [group=构造, 
             items=[code=, extension=, key=位置, orderNumber=,unit=,value=垂直于面,valueType=4]
                    [code=, extension=, key=厚度, orderNumber=,unit=mm,value=150,valueType=2]
                    [code=, extension=, key=角竖梃, orderNumber=,unit=,value=False,valueType=1]
                    [code=, extension=, key=轮廓, orderNumber=,unit=,value=默认,valueType=4]
            ]
            [group=标识数据, 
             items=[code=, extension=, key=OmniClass 标题, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=OmniClass 编号, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=URL, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=代码名称, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=制造商, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=图像, orderNumber=,unit=,value=,valueType=4]
                    [code=, extension=, key=型号, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=成本, orderNumber=,unit=,value=,valueType=2]
                    [code=, extension=, key=标记, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=注释, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=注释记号, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=类型图像, orderNumber=,unit=,value=,valueType=4]
                    [code=, extension=, key=类型标记, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=类型注释, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=说明, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=部件代码, orderNumber=,unit=,value=,valueType=3]
                    [code=, extension=, key=部件说明, orderNumber=,unit=,value=,valueType=3]
            ]
            [group=阶段化, 
             items=[code=, extension=, key=创建的阶段, orderNumber=,unit=,value=新构造,valueType=4]
                   [code=, extension=, key=拆除的阶段, orderNumber=,unit=,value=无,valueType=4]
            ]
            [group=限制条件, 
             items=[code=, extension=, key=偏移量, orderNumber=,unit=mm,value=0,valueType=2]
                   [code=, extension=, key=角度, orderNumber=,unit=°,value=0.00,valueType=2]
            ]
]

测试代码如下：

// 批量获取构件属性
protected void btnGetSingleModelMultipleElementsProperties_Click(object sender, EventArgs e)
{
    string[] elementIds = txtMultipleElementIds.Text.Split(",");

    ElementPropertyFilterRequest request = new ElementPropertyFilterRequest();
    request.ElementIds = elementIds;

    FileConvertApi api = new FileConvertApi();
    var response = api.GetSingleModelMultipleElementsProperties(txtAccessToken.Text, txtFileID.Text.ToLong(), request, chkIncludeOverrides.Checked);

    StringBuilder sb = new StringBuilder();
    List<SingleModelSingleElementEntity> lstProperties = response.Data;
    foreach (var property in lstProperties)
    {
        sb.AppendLine(property.ToString());
    }
    txtResult.Text = response.Code.ToString2()
                   + Environment.NewLine
                   + "elementId:" + txtMultipleElementIds.Text
                   + Environment.NewLine
                   + response.Message.ToString2()
                   + Environment.NewLine
                   + sb;
}

BIMFACE二次开发系列目录     【已更新最新开发文章，点击查看详细】