flow component. However, to understand how the Script component works, you may find it useful to read through the steps that are involved in developing a custom data flow component. See the sectionDeveloping a
The first way to use a script component is as a source. This approach is useful when reading from a data source that doesn’t have its own source component (Flat File, Excel, OLE DB, etc.,) such as when reading JSON data from a Web API or reading an unstructured Flat File that can...
From this small example, we have seen how to configure the component,write script for transformation, what asynchronous and synchronous modes are etc. Now, we can go ahead and do more complex transformations with this powerful component. We will see one such example in the next section. Exampl...
其实对比 Script Component Source,Script Component Transformation (同步或异步) 这三种不规则的文件解析方式来说,前面几种是最简单的,特别是 Script Component Source 可以非常直观的看到两个解析之后的 Output 操作。并且我们的这四个案例,不同的解决方式实际上就是把解析不规则文件的过程分别放在了 Source 端,同步...
For example, you can close the SqlDataReader that you used to load data. Override the ReleaseConnections method to disconnect from the external data source, if required.ExamplesThe following examples demonstrate the custom code that is required in the ...
The script is invoked by every row in the input or output. If used as a source, the Script component supports multiple outputs. If used as a transformation, the Script component supports one input and multiple outputs. If used as a destination, the Script component supports one input. The ...
access within the Script Component. Although you are not required to name these connections upfront, it is extremely helpful to do so. You’ll see why later when you connect to a data source. Below the screenshot shows an example of the AdventureWorks connection added to a Script Component....
This will decide what the type of the script component is. In this example, we will be using a Source Script Component Type. It is important to note that this configuration cannot be changed later. If you need to change the script component type, you need to drag and drop another compone...
ScriptMain 类包括 CreateNewOutputRows 方法的存根 。 CreateNewOutputRows 是源组件中最重要的方法 。 如果在 VSTA 中打开“项目资源管理器” 窗口,可以看到脚本组件还生成了只读的BufferWrapper和ComponentWrapper项目项。ScriptMain类继承自ComponentWrapper项目项中...
Integration Services 開發人員會將這些步驟辨識為 PipelineComponent 的主體方法。 展開資料表 步驟描述 Validate 元件會檢查有效的屬性值和組態設定。 PreExecute 元件會在開始處理資料列之前,執行一次處理。 PostExecute 元件會在已經處理所有資料列之後,執行一次處理。 ProcessInput 轉換或目的地元件會處理上游來源或...