BPL Elements This reference provides detailed information about each BPL element. Tip: If you want to view or edit the XML for a BPL, edit the BPL using Studio and click View other code. Common Attributes and Elements – Describes attributes and elements that are present in most BPL elements. <alert> – Send an alert message to a user device during execution of a business process. <assign> – Assign a value to a property in the business process execution context. <branch> – Conditionally cause an immediate change in the flow of execution. <break> – Break out of a loop and exit the loop activity. <call> – Send a request to a business operation, or to another business process. <case> – Perform a set of activities when a condition is matched within a <switch> element. <catch> – Catch a fault produced by a <throw> element. <catchall> – Catch a fault or system error that does not match any <catch>. <code> – Execute lines of custom code. <compensate> – Invoke a <compensationhandler> from <catch> or <catchall>. <compensationhandlers> – Provide compensation handlers, each of which performs a sequence of activities to undo a previous action. <context> – Define general-purpose properties in the business process execution context. <continue> – Jump to the next iteration within a loop, without exiting the loop. <default> – Perform a set of activities when no matching condition can be found within a <switch> element. <delay> – Delay execution of a business process for a specified duration or until a future time. <empty> – Perform no action. <false> – Perform a set of activities when the condition for an <if> element is false. <faulthandlers> – Provide zero or more <catch> and one <catchall> element to catch faults and system errors. <flow> – Perform activities in a non-determinate order. <foreach> – Define a sequence of activities to be executed iteratively. <if> – Evaluate a condition and perform one action if true, another if false. <label> – Provide a destination for a conditional branch operation. <milestone> – Store a message to acknowledge a step achieved by a business process. <parameters> – Specifies the parameters for another BPL element as a set of name-value pairs. <process> – Define a business process. <property> – Define a property within the <context> element for a business process. <reply> – Send a response from a business process before its execution is complete. <request> – Prepare a request within a <call> element. <response> – Handle a response received within a <call> element. <rule> – Refer to a production business rule class. <sequence> – Perform activities in sequential order. <scope> – Define the error handling mechanisms for a sequence of activities. <sql> – Execute an embedded SQL SELECT statement. <switch> – Evaluate a set of conditions to determine which of several actions to perform. <sync> – Wait for a response from one or more asynchronous requests. <throw> – Throw a specific, named fault. <trace> – Write a message to the foreground Terminal window. <transform> – Transform one object into another using a data transformation. <true> – Perform a set of activities when the condition for an <if> element is true. <until> – Perform activities repeatedly until a condition is true. <while> – Perform activities repeatedly as long as a condition is true. <xpath> – Evaluate XPath expressions on a target XML document. <xslt> – Execute an embedded XSLT transformation.