You can also display a standard HTML page without any scripting when an error occurs, but you must still give it the extension. By default, the procedure is given the same name as the original file, with the.
Because the files are processed at the point where you load the stored procedure into the database, the substitution is done only once, not whenever the page is served.
You can use any names and extensions for the included files. When specifying the names of files to the PSP loader, you must include the names of all included files also. Specify the names of included files before the names of any. You can use this feature to pull in the same content, such as a navigation banner, into many different files.
Or, you can use it as a macro capability to include the same section of script code in more than one place in a page. All the declarations are available to the code later on in the file. You can specify multiple declaration blocks; internally, they are all merged into a single block when the PSP file is made into a stored procedure.
Because the result is always substituted in the middle of text or tags, it must be a string value or be able to be cast to a string. PRN function, which trims any leading or trailing whitespace and requires that you quote any literal strings. You can also nest single-quoted strings inside single quotes.
If your background is in HTML design, here are a few examples of retrieving data from the database and displaying it. To display the results of a query that returns multiple rows, you can iterate through each row of the result set, printing the appropriate columns using HTML list or table tags:.
Although you can reference packaged procedures, constants, and types from PSP scripts, the PSP scripts can only produce standalone procedures, not packages. Note that the attribute names contentType and errorPage are case-sensitive.
Specifies the name of the stored procedure produced by the PSP file. By default, the name is the filename without the. Specifies the name, and optionally the type and default, for each parameter expected by the PSP stored procedure. The parameters are passed using name-value pairs, typically from an HTML form.
To specify a default value of a character type, use single quotes around the value, inside the double quotes required by the directive. For example:. Specifies the name of a file to be included at a specific point in the PSP file. The file must have an extension other than. The name resolution and file inclusion happens when the PSP file is loaded into the database as a stored procedure, so any changes to the file after that are not reflected when the stored procedure is run. You must specify exactly the same name in both the include directive and in the loadpsp command, including any relative path name such as..
When a code block is split into multiple scriptlets, you can put HTML or other directives in the middle, and those pieces are conditionally executed when the stored procedure is run. The result is substituted as a string at that spot in the HTML page that is produced by the stored procedure.
You load one or more PSP files into the database as stored procedures. The pages are compiled and loaded in one step, to speed up the development cycle:. To do a "create and replace" on the stored procedures, include the -replace flag.
The loader logs on to the database using the specified user name, password, and connect string. The stored procedures are created in the corresponding schema. Include the names of all the include files whose names do not have the. Also include the name of the file specified in the errorPage attribute of the page directive. These filenames on the loadpsp command line must match exactly the names specified within the PSP include and page directives, including any relative path name such as..
The virtual path in the URL depends on the way the Web gateway is configured. It is not practical to bookmark pages that are called this way. In this example, we use a very small table representing a product catalog. It holds the name of an item, the price, and URLs for a description and picture of the item.
For your own debugging, you might want to display the complete contents of an SQL table. In subsequent iterations, we use other techniques to get more control over the presentation. The section table is related to the course table and the instructor table. The enrollment table is equally important, because it keeps track of which students have enrolled in which sections. Each enrollment record also stores information about the student's grade and enrollment date.
The enrollment table is related to the student table and the section table. Furthermore, the schema contains a number of other tables that manage grading for each student in each section. I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time. Pearson Education, Inc. This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site.
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We may revise this Privacy Notice through an updated posting. Supporting Documentation The following documents treat advanced topics related to application development. Advanced Application Development Concepts These guides provide advanced conceptual and architectural information applicable to all development environments and languages with which you can develop Oracle applications.
Java The Java programming language is used for database code that runs inside the database, on a middle tier, or on a client system. NET and Windows Application Development Application development concepts and tasks for languages and technologies specific to Windows platforms: the. XML You can store XML content in the database, and write applications to process it and use it as a data interchange format.
Globalization You can store data from different character sets and code pages, and manipulate and present that data as appropriate for each locale. Data is at the center of many challenges in system design today. Difficult issues need to …. Today, software engineers need to know not only how to program effectively but also how to …. Distributed systems have become more fine-grained as organizations shift from code-heavy monolithic applications to smaller, self-contained ….
Skip to main content. Start your free trial. Buy on Amazon. Book description This compact guide provides the jump-start Oracle developers need to make the transition from traditional programming to the development of useful Web applications for Oracle8i. Show and hide more. Publisher resources Download Example Code.
Table of contents Product information. So why not Java?
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