Dynamic Server Page
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1 webMethods KB DSP A dynamic server page (DSP) is a document embedded with special codes (tags) that instruct the webMethods Integration Server to perform certain actions when an HTTP client requests the document. It is just like JSP java server pages which contain java scripplets with HTML tags. DSPsare used to construct browser-based applications. DSP should only contain HTML content. The webMethods Integration Server Administrator is composed entirely of DSPs DSP Sample <HTML> <HEAD> <title>Order Tracking System</title> </HEAD> <BODY> <h1>Current Orders</h1> %invoke orders:showOrders% %loop orders% Date : %value orderDate% PO Number: %value orderNum% %endloop% %endinvoke% </BODY> </HTML> 2 webMethods KB Request a DSP DSPs may be invoked from HTML forms : <HTML> <HEAD> <title> Page Title </title> </HEAD> <BODY> <A HREF=/package Name/fileName.dsp>Show Page</A> </BODY> </HTML> Dsp Tags The Integration Server automatically processes DSP tags when a DSP is requested via HTTP. . Use the belong %invoke% %value% %ifvar% / %switch% . %loop% %comment% action Invoke a service within a DSP Manipulate variables. Conditionally process a block of code within DSP Reiterate a block of code within a DSP. Denote a comment within a DSP. Scope Scope refers to the set of variables upon which a DSP can operate directly. Initial Scope means whose variables exist for the entire life ofa DSP Example: http://hostName:portNum/packageName/fileName.dsp?varName1=var1&var Name2=var2 Only those variables that are within the current scope are passed to a service that is invoked in a DSP. 3 webMethods KB The %end% tag, cause the current scope to close and discard the variables within it and scope reverts to the previous level. Conditionally Executing Blocks of Code The %ifvar% and %switch% tags selectively execute a block of code based on the existence or value of a variable at run time. Use %ifvar% tag to denote a block of code that is to be executedonly when a specified variable exists or contains a value that you specify. The %switch% tag allows to define a separate block of code (a case) for each value that a variable can take at run time. Use %switch% tag instead of %ifvar% when there are more than two possible paths of execution. %ifvar variableName% Block of Code %else% Block of Code %end% Where variable Name specifies the name of the variable you want to evaluate at run time %switch variableName% %case 'switchValue'% Block of Code %case 'switchValue'% Block of Code %case% Default Block of Code %end% where variable Name specifies the name of the variable you want to evaluate at run time and switch Value is the value that will cause a case to execute .
