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OTV is a provider of online television broadcasting services. To improve its services through the re-development of online broadcasting system. In this tutorial, we will use text analysis to determine the OTV online radio service of the main use cases and use case diagram form for further study.
- Download file attachments OTV.txt, this document describes the general business operations ahead of OTV.
- Select Project> New from the application toolbar, create a new project. In the New Project window, enter OTV as the project name, and then click Create Blank Project.
- Select Diagram> New from the application toolbar.
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In the New Diagram window, select the Textual Analysis, and then click Next.
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Click "OK" again to create the problem statement.
You can enter a problem statement in the problem statement editor. There directly choose to either enter or import a text file. Let us try to import the downloaded text file. Click the "Import File" button, select "OTV.txt", then click "Open" button.
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Text has been imported, stated research questions.
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Now, make sure that all candidates actors involved in the system. By reading the statement of the problem, we found the first candidate actor, a senior member of the second paragraph. Highlight and right-click it, and choose Actor from the pop-up menu.
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Check the bottom of the grid. It lists the properties of the extracted candidates: candidate class (name of candidate), extracted text (extract words / phrases), type (candidate type), description of the occurrence (word / phrase appears in the word / phrase the number of times) problem statement) and highlighted (highlight color candidates).
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The second general membership candidates actor was found. Again, add it as a candidate actor.
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In the last paragraph, we find a candidate actor administrator. Add text administrator actor.
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Now, by determining a candidate cases. Example often named by the candidate verb or verb + noun phrase. For example, in the second paragraph of "watch any archived TV programs". Highlight and right-click "watch any archived TV programs", then select "Use Case" from the popup menu.
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The following text search and identified as candidates for Example:
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To distinguish the candidates in the problem statement, we can change their highlight color. Let us choose orange as the highlight color actors candidates. Click on the highlighted cell's senior members, then wrestled triangle. Select the orange from the combo box.
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You may notice that some of the candidates and actors can be renamed to make it shorter and more informative use cases. Candidates actor for example, senior members rename candidate actor, at the bottom of the grid, double-click the cell next senior member of the candidate level and change it to senior members.
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On the other hand, you can enter a description of the senior members. You type in "Description" cell text will be the senior member of the documents actor. For example, enter "A premium member can watch both archived and live TV programs for US $ 30 per month"
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Rename the other candidates and described as follows:
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So far, the analysis of text should read as follows:
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Let's switch to the candidate Candidate Pane View pane by clicking the button. You can view the candidates for the candidate in the view pane arrangement.
- FIG embodiment we use a form to those of the candidate object. First, create a use case diagram. Select Diagram> New from the application toolbar.
- In the New Diagram window, select the Use Case Diagram and click Next. Then, click "OK" to create the chart.
- Open Model Explorer. Select View> Panes> Model Explorer from the application toolbar.
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Select all the candidates actors and use cases. Then, drag them on the chart.
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Rearranged so that the shape of the lower graph similar to FIG:
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Actors associated with the embodiment. Finally, this figure should be shown as follows:
Reproduced in: https: //juejin.im/post/5cf49695f265da1bcd37c21c