Getting started-with-oracle-so a lab#12

Getting Started with Oracle SoA
Oracle SOA Parallel Processing by Using Flow Activity Lab#12

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BISP is committed to provide BEST learning material to the beginners
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History:
Version
0.1
0.1

Description Change
Initial Draft
Review#1

www.bispsolutions.com

Author
Shiva Kant Pandey
Amit Sharma

www.bisptrainigs.com

Publish Date
21st Aug 2012
29th Aug 2012

www.hyperionguru.com

Page 1

Contents
Contents....................................................................................................................................... 2
Parallel Processing by using Flow activity ....................................................................................3
Flow activity: ............................................................................................................................... 3
Flow activity Overview: ................................................................................................................ 3
Flow activity semantics:............................................................................................................... 3
Objective of Project: .................................................................................................................... 4
Stepwise Procedure of Project Parallel Processing by using Flow activity.....................................4




Page 2

Parallel Processing by using Flow activity
Flow activity:
The Flow activity is used to configure parallel activity in BPEL processes. In theory, activities
contained in two or more branches (sequence containers) inside a Flow activity are executed in
parallel.

Flow activity Overview:
Used to define a set of activities that will execute concurrently (Most fundamental use of
this construct)
 Further allows expression of synchronization dependencies between activities (Control
flow defined by a network of links)
A Flow defines one or more child activities that execute concurrently, which is the most basic
use of this construct. The Flow activity also allows us to synchronize activities, such that one
activity starts when another ends. On this slide we can see the syntax, and we see that you can
optionally define one or more links, which must have names that are unique within their scope.

Flow activity semantics:
Directly nested activities are started concurrently as soon as the flow activity is started
flow activity completes when all nested activities complete
All directly nested activities within a Flow are started at same time. The Flow completes when
all of its nested activities are complete.




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Objective of Project:
Flow activity is a structured activity used for parallel processing all other nested activities
simultaneously so here in project example we have simply taken two numbers i.e Number A
&Number B as input & will get result as Addition ,Subtraction ,Multiplication ,Division
simultaneously or we can say concurrently with the help of Flow activity in a bpel
orchestration .

Stepwise Procedure of Project Parallel Processing by using Flow
activity
Step 1: Create new project
New --->All Technologies--->SOA Tier --->SOA project --->OK ---> Project Name
(ParallelProcessing) ---> ADF Business Component---> SOA--->Next

Step 2: Click Composite with BPEL Process




Page 4

Step 3: Click Finish

Step 4: Fill all its blank spaces
Name (ParallelProcess) ---->NameSpace (Leave as it is)--->Template(Select Synchronous BPEL
Process)---> Service Name(ParallelProcess)----> mark Expose as a SOAP service --->Click Ok

Step 5: Open Composite.xml & observe BPEL Process




Page 5

Step 6: Click on ParallelProcess.xsd & it is automatically generated xsd for sync bpel process.
Now make changes on xsd rename input element as NumberA & create new element & name
it as NumberB & set integer type for both the inputs. Rename result as NumberA & create
another elements NumberB , Addition, Subtraction, Multiplication & Division with their types
as shown in the next snap.

Step 7: This is the complete xsd
Process -->sequence-->NumberA &NumberB
ProcessResponse --> sequence --> NumberA ,NumberB , Addition, subtraction, Multiplication,
Division .




Page 6

Step 8: Open ParallelProcess.bpel

Step 9: Drag & drop Flow Activity from component palette for nesting other activities on it
& expand flow activity by clicking plus sign [+]



Page 7

Step 10: Observe flow activity that it has several parallel drop activities

Step 11: Drag & drop assign activity into flow activity inside drop activity & rename it as
Addition , Subtraction, Multiplication, Division.




Page 8

Step 12: Click on addition assign activity & open it to build xpath expression.




Page 9

Step 13: Now drag & drop Expression

on Addition inside Output Variable.

Step 14: Click NumberA under BPEL Variables---> insert into expression ---> + (Add sign) -->
insert into expression ---> Click NumberB under BPEL Variables ---> insert into expression--->
OK




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Step 15: Similarly
Click on Subtraction assign activity & open it to build xpath expression
Now drag & drop Expression
on Subtraction inside Output Variable.
 Click NumberA under BPEL Variables---> insert into expression ---> - (minus sign) -->
insert into expression ---> Click NumberB under BPEL Variables ---> insert into
expression---> OK

Step 16: Similarly



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Click on Multiplication assign activity & open it to build xpath expression
on Multiplication inside Output Variable.
 Click NumberA under BPEL Variables---> insert into expression ---> * (asterisk sign) -->
insert into expression ---> Click NumberB under BPEL Variables ---> insert into
expression---> OK

Step 17: Similarly
Click on Division assign activity & open it to build xpath expression
on Division inside Output Variable.
 Click NumberA under BPEL Variables---> insert into expression ---> div -->Click
NumberB under BPEL Variables ---> insert into expression---> OK




Page 12

Step 18: Drag & drop assign activity below flow activity & rename it as Assignoutput , Click on
it to open

Step 19: Map AssignOutput as shown below




Page 13

Step 20: Assign output completed & also BPEL process completed Now Click on Compile Icon
shown below

Successful compilation with 0 errors & 0 warnings

Build Successful




Page 14

Step 21: Deploy Parallel Processing Project by right clicking on left pane on ParalelProcessing
-->Deploy --->ParallelProcessing ---> Application server --->devsoa (select server domain)
-->AdminServer---> Next ---> Finish

Deployment finished

Step 22: : Click On browser ---> Start Enterprise manger -----> login using credentials
(username : weblogic & password : welcome1) , now click twice on ParallelProcessing[1.0]
composite then Click on Test to test the composite instance .




Page 15

Step 23: Input /fill required data in all blank fields & click to TestWebService
NumberA =50
NumberB=5




Page 16

Step 24: Required output is shown below ,Now click on Launch Flow Trace to view flow trace
of composite .

Step 25: Click on ParallelProcess




Page 17

Step 26: Click on Flow

Step 27: Observe flow diagram & notice that all operations are processing concurrently & in a
parallel way .
Click on each operation one by one & observe that the processing time of all operations are
similar ie 00:14:56




Page 18




Page 19

So from here we concluded that the flow activity is processing concurrently.




Page 20

Getting started-with-oracle-so a lab#12

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