Oracle SOA 11g_ BPEL Activities & Components

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Oracle SOA 11g: BPEL Activities & Components http://challaprudhvi.blogspot.in/2013/01/bpel-activities-components.html

1 of 7 23-11-2013 04:35 PM


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The two branches of the pick activity are as follows: onMessage (automatically displays below the Pick activity icon)

Contains the code for receiving a reply, for example, from a loan service. onAlarm (does not automatically display; you must manually add this branch by

selecting the Pick activity icon and clicking the Add OnAlarm icon)Contains the code for a timeout, for example, after one minute.

Whichever branch completes first is executed; the other branch is not executed. The branch thathas its condition satisfied first is executed.Figure A-25 shows the OnAlarm dialog of the pick activity in BPEL 1.1.Figure A-25 OnAlarm Branch Dialog of a Pick Activity

Note: You can also create onMessage branches in BPEL 1.1 scope activities and onAlarmbranches in BPEL 1.1 and 2.0 scope activities. Expand the Scope activity in Oracle JDeveloper,and browse the icons on the left side to find the branch you want to add.If you add correlations to an OnMessage branch, the correlations syntax is placed after theassign activity syntax. The correlation syntax must go before the assign activity.As a work around, perform the following steps:

1. Create a correlation set in Oracle JDeveloper.2. Assign this to the OnMessage branch.3. Complete the remaining design tasks.4. Before making or deploying the BPEL process, move the correlation syntax before the

assign activity in the BPEL

This activity specifies the partner link from which to receive information and the port type andoperation for the partner link to invoke. This activity waits for an asynchronous callbackresponse message from a service, such as a loan application approver service. While the BPELprocess is waiting, it is dehydrated (compressed and stored) until the callback message arrives.The contents of this response are stored in a response variable in the process.The receiveactivity supports the bpelx:property extensions that facilitate the passing of properties throughthe SOAP header, and the obtaining of SOA runtime system properties for useful informationsuch as tracking.compositeInstanceId and tracking.conversationId.Figure A-26 shows the Receive dialog in BPEL 1.1. You can perform the following tasks:

Provide a meaningful name. Select the partner link service for which to specify an operation. Select the operation to be performed. Automatically create a variable or select an existing variable in which to transport the

callback response. Figure A-26 Receive Dialog

13. Reply Activity

This activity allows the process to send a message in reply to a message that was receivedthrough a receive activity. The combination of a receive activity and a reply activity forms arequest-response operation on the WSDL port type for the process.Figure A-31 Reply Dialog

This activity enables you to rethrow a fault originally captured by the immediately enclosing faulthandler.Note: This activity is only supported in BPEL 2.0 projects.

12. Receive Activity

14. Rethrow Activity


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5 of 7 23-11-2013 04:35 PM

Posted by ChallaPrudhvi at 02:50

tasks in a catch branch). For example, if a client's bad credit history is identified or a socialsecurity number is identified as invalid, a loan application process is terminated, and the client'sloan application document is never submitted to the service loan providers.Note:Figure A-40 shows several terminate activities in the otherwise branch of a switch activity.Figure A-40 Terminate Activity

This activity generates a fault from inside the business process.Figure A-41 shows the Throw dialog.Figure A-41 Throw Dialog

This activity enables you to create a transformation that maps source elements to targetelements (for example, incoming purchase order data into outgoing purchase orderacknowledgment data).Figure A-42 shows the Transform dialog in BPEL 1.1. This dialog enables you to perform thefollowing tasks:

Define the source and target variables and parts to map. Specify the transformation mapper file. Click the second icon (the Add icon) to the right of the Mapper File field to access the

XSLT Mapper for creating a new XSL file for graphically mapping source and targetelements. Click the Edit icon (third icon) to edit an existing XSL file.

Figure A-42 Transform Dialog

.

This activity allows a process to specify a delay for a certain period or until a certain deadline isreached. A typical use of this activity is to invoke an operation at a certain time. This activityenables you to wait for a given time period or until a certain time has passed. Exactly one of theexpiration criteria must be specified.Figure A-46 Wait Dialog

22. While Activity

This activity supports repeated performance of a specified iterative activity. The iterative activityis repeated until the given while condition is no longer true.Figure A-47 While Dialog

19. Throw Activity

20. Transform Activity

21. Wait Activity

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Oracle SOA 11g_ BPEL Activities & Components

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