Table of Contents

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  1. Preface
  2. Welcome to Informatica Process Developer
  3. Using Guide Developer for the First Time
  4. Getting Started with Informatica Process Developer
  5. About Interfaces Service References and Local WSDL
  6. Planning Your BPEL Process
  7. Participants
  8. Implementing a BPMN Task or Event in BPEL
  9. Implementing a BPMN Gateway or Control Flow
  10. Using Variables
  11. Attachments
  12. Using Links
  13. Data Manipulation
  14. Compensation
  15. Correlation
  16. What is Correlation
  17. What is a Correlation Set
  18. Creating Message Properties and Property Aliases
  19. Adding a Correlation Set
  20. Deleting a Correlation Set
  21. Adding Correlations to an Activity
  22. Rules for Declaring and Using Correlation Sets
  23. Correlation Sets and Engine-Managed Correlation
  24. Event Handling
  25. Fault Handling
  26. Simulating and Debugging
  27. Deploying Your Processes
  28. BPEL Unit Testing
  29. Creating POJO and XQuery Custom Functions
  30. Custom Service Interactions
  31. Process Exception Management
  32. Creating Reports for Process Server and Central
  33. Business Event Processing
  34. Process Central Forms and Configuration
  35. Building a Process with a System Service
  36. Human Tasks
  37. BPEL Faults and Reports

2. Designer

2. Designer

Overview of Variables

Overview of Variables

A BPEL process receives, manipulates, and sends data through XML variables. Variables hold the messages exchanged between business partners and data used within the process.
For example, a process that receives a purchase order message from a buyer puts the message in an input variable. From there the variable content can be accessed by other operations. The following illustration shows an example.
Variables are defined in one of the following ways:
  • WSDL Message Types
  • XML Schema Type
  • XML Schema Element
Tips for using variables:
  • You can initialize a variable when you declare it. For details, see
    Initializing a Variable
    .
  • You can validate the value of variables against their definitions by adding a validate activity or a validate attribute in an assign activity. For details, see
    Validate
    and
    Assign
    .
  • Variables can have attachments, and you can manipulate the attachments, as described in
    Attachments
    .
XML Syntax
<variable name="BPELVariableName" messageType="QName"? type=QName? element=QName?>+ from-spec? </variable>
A variable name cannot contain the "." character. This character is reserved for use as a delimiter in WS-BPEL's default binding to XPath 1.0.


Updated March 30, 2020