Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Tham khảo tài liệu 'beginning sql server modeling- p4', công nghệ thông tin, cơ sở dữ liệu phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER 3 DOMAIN-SPECIFIC LANGUAGES 101 LOLA S LUNCH COUNTER and execute another dir command to be sure the compiler created the LunchCounter.mx image file see Figure 3-35 . Figure 3-35. SQL compiling the LunchCounter.mg file to create the LuncCounter.mx image file Next you want to use the DSL Grammar executor command-line tool to generate an M code version of the SandwichLanguage.dsl file. The executable was formerly called the Mgrammar executor which is where it got its mgx.exe name. With any executable command-line tool you can normally enter the name of the command followed by to get a listing of the parameters that can be used to pass information to the tool when it executes. Figure 3-36 shows a list of these parameters. The two you re interested in are reference and MModuleName. Note that most but not all have shorthand aliases like r for reference to save you time when you re using the tool frequently. 61 Download from Wow eBook www.wowebook.com CHAPTER 3 DOMAIN-SPECIFIC LANGUAGES 101 LOLA S LUNCH COUNTER Figure 3-36. Displaying the MGX tool parameters At the command prompt enter and execute the command as follows Mgx.exe SandwichLanguage.dsl reference LunchCounter.mx MModuleName LunchCounter Figure 3-37 shows this except that I ve used aliases for setting the parameters to keep the command from wrapping in the command window. You can try it either way. If you do a dir directory listing you can see that this command created the SandwichLanguage.m file. 62 Download from Wow eBook www.wowebook.com CHAPTER 3 DOMAIN-SPECIFIC LANGUAGES 101 LOLA S LUNCH COUNTER Figure3-37. Running theMGXMGrammar executor tool to generate the SandwichLanguage.m file Loading this file into Intellipad see Figure 3-38 you can see that it is an M Graph almost exactly the same as the one generated earlier when you made the final revisions to the DSL Grammar code prior to setting up for the deployment phase. The one difference is that the graph is now defined within the LunchCounter .