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How to implement FLOW ACTIIVTY in Oracle SOA

21 September, 2018

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Property: whenever executed parallel Non blocking invoke à true (multithreading)   37   XSD: i/p 2 i1 ,i2 2 int o/p 2 result àint   create variables:
  • name (add) type(int)
  • name (mul) type(int)
  Assign 1 : Input 2 invoke 1 i/p Input 2 invoke 2 i/p   Assign 2 : Invoke 1 o/p 2 add   Assign 3: Invoke 2 o/p 2 mul   Switch: Case1: add> mul Case2:  mul  > add   Assign 4: Add 2 result   Assign 5: mul2 result   Create the property: Double click on partner link (ex: PL _add) Property  2click Property name(non blocking invoke), property  value (true) 2ok   Note:
  • Put property to 2 partner links
  1. PL_add
  2. PL _ mul
  • Non blocking invoke means send the message parallel.
  Flow: Loan approval process à when ever we know the flow of our project we work with “flow activity” . i/p 2 loan amount, duration   Flow – N : When we are not sure of the flow of the project and don’t how many web services we need to invoke we will dynamically process at runtime by using “flow activity” .   DB –poll + synchronous _read to file _write: 38   Fault Handling Frame work: 2 ways to handle the faults
  1. Process level :
  2. Scope
  3. Catch
  4. Catch all
  5. Throw
  6. compensate
  7. Policy level
  8. Fault – indings.xml
  9. Fault – polices .xml
  • Process level can be handle particular BPEL process only
   Ex: In process have multiple BPEL’s are then if we created throw, catch, catch all for ci validation BPEL then it applicable for that BPEL only not applicable for total process project.
  • Policy level can be handle entire application /project
Ex: Process project all BPEL process handled. 2 types of faults
  1. Business faults: it can be defined business conditions
Ex: amount> 50,000 , length cc number = 16 digits
  1. Run time faults : it can handle by using catch, catch all blocks. It doesn’t have throw activity.
Business faults Run time faults
  1. Catch
  2. catch
  3. catch all
  4. catch all
  5. throw
 39   XSD: i/p 2 Branch name 2 string branch 2 string loan amount 2 int o/p 2 Result 2 string   Switch: Case1 : Label :SBI Expression: bank name = “SBI”   Case2: Label :ICICI Expression: bank name= “ICICI’   Throw 1 and catch1: Name space URI = http://SBI BANK Local part = SBI BANK   Throw 2 and catch2: Name space URI = http://ICICI  BANK Local part = ICICI BANK   Throw 3 Name space URI = http://other   BANKs Local part = other BANKs Process level : Project 2 customer details.
  1. Policy level:
  2. Fault – bindings.xml
  3. Fault – policies.xml
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Write inside composite .xml: <property name = “oracle .composite.faultpolicy file”> Fault – policies.xml</property> <property name = “oracle .composite.faultpolicy file”> Fault – bindings.xml</property>
  1. xml 2 open source
</service> <component name =”BPEL process 1”  version= “1-0”>
  1. Copy fault – bindings.xml , fault – polices.xml
Paste inside project(C://j developer/ my works/application ramesh 1/project) fault –policies.xml -> contains (actions)
  1. Ora – retry
  2. Ora – terminate
  • Ora – human intervention
  1. Ora –rethrow
  2. Ora –reply
  3. Ora –java
  Main faults:
  1. Remote fault
  2. Mediator fault
  • Binding fault
  1. Selection failure.
  Ora – retry:
  1. Retry interval failure action
  2. Retry count
  • Retry failure action
  Ora – human intervention: Some one has come and do something   Ora –java: Send the mail to admin /client(java code)   Ora –rethrow: Throw back policy level to process level   Ora – terminate: Immediately stop the process.   Ora –reply: Starts again 2 ora retry   Example for above all (remote fault)  40 PL:
  1. Shut down
  2. Retired
  3. Undeploy
  4. Server shutdown
  Mediator faults:
  • Routing rules
  • Transformation
  • XSD validation
  • Filter condition
  Binding fault: WSDL miss match   Ault – policies .xml: <conditions> <fault name Xmlns:bpelx =http://schemas.oracle.com/bpel/extension name =”bpelx: remotefault” > <conditions> <action ref =”ora -retry”/> </conditions> </fault name> <faultname Xmlns:bpelx =http://schemas.oracle.com/bpel/extension name =”medns:mediatorfault” > <conditions> <action ref =”my – mediator-fault-handler”/> </conditions> </fault name> <fault name Xmlns:bpelx =http://schemas.oracle.com/bpel/extension name =”bpelx: bindingfault” > <conditions> <action ref =”my- java- handler”/> </conditions> </fault name> </conditions> <Actions> <Action id = “my –java-handler”> <retry> <retry count>4</retrycount> <retry FailureAction ref =”Ora – human - intervention”/> </retry> </Action> </Actions> For Indepth knowledge on Oracle SOA, click on below
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