Table of Contents

Search

  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

Declaring Extension Elements and Attributes

Declaring Extension Elements and Attributes

An extension element declaration allows you to add a new attribute to a BPEL construct. Process Developer ignores it, since it can not understand it.
The WS-BPEL 2.0 specification allows for extensions to the basic BPEL language in several ways, including extension elements and extension attributes for BPEL constructs.
For example, if you open a process containing elements and attributes that are not defined in the specification, its extension details are preserved by Process Developer.
If the extension details include a Must Understand attribute set to Yes, you cannot simulate or remote debug your process since Process Developer does not understand how to execute the process. In this case, Process Developer declares an unknown extension as an error.
If the Must Understand attribute is set to No, the extensions are ignored when you simulate and debug your process.
You can add extension elements and attributes to any WS-BPEL 2.0 process; however, if you enable the Must Understand attribute, you cannot simulate or deploy the process to A Process Server.
To add or modify an extension attribute:
  1. From the Outline view, select the BPEL construct that uses an extension attribute. Note that almost every construct, including the process element, partner links, activities, correlation sets, fault and event handlers, contain the Extension Attributes property in the Properties view.
  2. In the Properties view, select the
    Show Advanced Properties
    button in the toolbar to display all properties.
  3. Select the
    Dialog (...) Button
    at the end of the Extension Attributes row.
  4. If your imported process contains extension attributes, they are displayed in the
    Extension Attributes
    dialog. Do one of the following:
    • Select an attribute from the list and select
      Edit
      .
    • Select
      Add
      to create a new attribute.
  5. In the
    Extension Attribute
    dialog, do the following:
    • Type in a namespace or select from a list of existing extension namespaces.
    • Add or edit the attribute Name.
    • Add or edit the attribute Value.
    • Select the Declare this extension check box if the extension namespace is new.
    • Check
      Must understand
      if a BPEL engine must understand the attribute value in order to correctly execute the process. Note that the Process Developer engine cannot understand the attribute definition or value, and you cannot simulate or deploy the process to a Process Server.
    • Check
      Must understand
      if a BPEL engine must understand the attribute value in order to correctly execute the process. Note that the Process Developer engine cannot understand the attribute definition or value, and you cannot simulate or deploy the process to a Process Server.
    The following illustration shows an example.
    Extension attribute dialog
  6. Click
    OK
    , and notice that the attribute is listed in the
    Extension Attributes
    dialog where you can edit and remove attributes from the list.
Tips:
  • After you add an extension attribute, Process Developer adds a prefix for the namespace. If desired, select Namespaces from the Outline view and rename the prefix to something more meaningful.
  • The extension attributes are displayed in the Properties view of the BPEL construct, in the order they were created.
  • To reset the Must Understand attribute, select the Extensions namespace declaration from the Outline view and change the value in the Properties view
To add or modify an extension element
:
  1. From the Process Editor or Outline view, select the BPEL construct that uses an extension element. Note that almost every construct, including the process element, partner links, activities, correlation sets, fault and event handlers, contain the Extension Elements property in the Properties view.
  2. In the Properties view, select the
    Show Advanced Properties
    button in the toolbar to display all properties.
  3. Select
    Dialog (...)
    at the end of the
    Extension Elements
    row.
  4. If your imported process contains extension elements, they are displayed in the
    Extension Elements
    dialog. Do one of the following:
    • Select an element from the list and select
      Edit
      .
    • Select
      Add
      to create a new element.
  5. In the
    Extension Element
    dialog, do the following:
    • Type in fully qualified valid XML syntax in the Element text box. Process Developer validates the XML before enabling the
      OK
      button.
    • Select the Declare this extension check box if the extension namespace is new.
    • Check
      Must understand
      if a BPEL engine must understand the element value in order to execute the process. Note that the Process Developer engine cannot understand the element definition or value, and you cannot simulate or deploy the process to A Process Server.
      The following illustration shows an example:
      Extension element dialog
  6. Click
    OK
    , and notice that the element is listed in the
    Extension Elements
    dialog where you can reorganize the list and remove elements from the list.
Tips:
  • Reorganize the extension element entries to reflect the order in which they should be executed
  • To reset the Must Understand attribute, select the Extensions namespace declaration from the Outline view and change the value in the Properties view


Updated March 30, 2020