数据图

在本例中，数据图由Employee数据对象（以及变更摘要）组成。

For this example , the data graph is made of Employee data objects ( and a change summary ) .

示例数据图没有XSD这样的模型文档。

The example data graph has no model document such as XSD .

要使这个数据图对Web服务友好，需要对其进行一个小修改。

You need to make one small modification to this map to make it Web service friendly .

这个更改会阻止数据图在DesignStudio中运行，但不必担心；它将成为一个不错的Web服务。

This change prevents the map from running in Design Studio , but don 't worry ; it will make for a good Web service .

您创建了一个CastIron编排，它使用InvokeService活动来调用这个Web服务，进而运行一个数据图。

You created a Cast Iron orchestration that uses the Invoke Service activity to call this Web service , thereby running a map .

您可以使用DesignStudio附带的一个示例数据图，比如州数据图，该数据图重新安排了美国各种的统计数据。

You can use one of the example maps that come with Design Studio , such as the states map , which rearranges statistics on US states .

这个流程的第一步是创建一个WebSphereTX数据图。

The first step in this process is to create a WebSphere TX map .

中介器层可以接收和返回SDO数据图。

The mediator layer accepts and returns SDO data graphs .

数据图包含一个根数据对象、与根关联的所有数据对象和变更摘要（changesummary，参见本文后面的叙述）。

A data graph contains a root data object , all of the root 's associated data objects , and a change summary ( more on change summaries in a moment ) .

修改后，数据图被回传给DMS更新数据源。

Once modified , data graphs are passed back to the DMS for updating the data source .

可以将数据图的数据格式（模型）看作DMS与客户机之间的抽象。

The data format ( model ) of the data graph can be considered a contract between the DMS and the client .

如果在示例应用程序中将debug变量设为true，那么就可以执行以下调用，查看数据图的序列化版本。

If you set the debug variable to true in the sample application , it enables calls like the one below , which lets you see the serialized version of the data graph .

一般来说，访问实体EJB（EntityEJB）的每个属性的开销非常大，所以传输几个数据图中的SDO对象效率更高。

Typically , access to each property of an Entity EJB is very expensive , so transferring several SDO objects in a data graph is more efficient .

变更摘要包含在数据图中，表示对DMS返回的数据图的修改。

Change summaries are contained by data graphs and are used to represent the changes that have been made to a data graph returned by the DMS .

现在，SDO只有一个方面尚未介绍：使用类似于XPath的表达式来查找希望放入数据图的项目。

Then there is just one more aspect of SDO not yet described : the use of an XPath-like expression to find the item we want within the data graph .

客户机期望从DMS得到数据图，DMS也知道如何创建数据读（包括从后端数据源中读取和更新数据）。

It is what the client expects from the DMS and what the DMS knows how to build ( and also to read from to update back-end data sources ) .

如果您决定点丁字牛排（T-Bone），您可以根据它的索引直接从数据图中访问它

If you have decided to have the T-Bone , you can then access it directly in the graph from its index

DMS总是以同一种格式（数据图）返回信息，它隐藏了实际的数据存储信息，在SDO应用程序和EIS之间提供了一层数据提取的功能。

As a DMS always returns the information in the same format ( a Data Graph ), it hides the actual data storage and provides a level of abstraction between the SDO application and the EIS .

DMS的另一项任务（按照EmployeeDataMediator接口的定义）是根据SDO客户机提供的数据图更新后端数据源。

Another task of the DMS ( as defined in the EmployeeDataMediator interface ) is to update backend data sources based on a data graph provided by the SDO client .

现已将两个数据图载入内存。

Now we have both data graphs loaded in memory .

对象创建包含添加到数据图中的数据对象。

Object creations contain the data objects that were added to the data graph .

基于网格数据图的自适应细分及边缘提取

Adaptive Subdivision & Area Graph Segmentation and Edge Detection Method Based on Grid Computation

此外，数据图可以包含表示不同数据源中数据的对象。

Furthermore , a data graph can include objects representing data from different data sources .

我描绘了一个两维数据图。

I took a twoimensional mapping data .

此外，由于数据图是由数据对象组成的，因此它是可序列化的。

Moreover , as it is composed of Data Objects , a Data Graph is serializable .

继续讨论数据图之前，要先开始记录日志。

One last thing to do before returning the data graph is to start logging changes .

下面将对伪元数据代码和结果数据图结构进行简要的介绍。

A quick description of the pseudo-metadata code and the resulting data graph structure is provided below .

数据图就是一组可以从数据源中分离出来的树形结构的对象。

A data graph is a collection of tree-structured objects that might be disconnected from the data source .

将更改保存到库时，中介器先在数据图中处理更改，然后将这些更改发送到库。

Upon persisting changes to the repository , mediators process changes within the data graph and send those changes to the repository .

在图8中，发送的内容是索赔单号而不是完整的数据图，其中根元素为索赔。

In Figure 8 , the claim number is sent instead of the complete data graph with the root element being the claim .