Andries Hanekom

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News and opinions on Oracle Fusion Applications, e-Business Suite and Fusion Middleware for APPS.Andries Hanekomhttp://www.blogger.com/profile/14293566205446799252noreply@blogger.comBlogger23125
Updated: 4 hours 13 min ago

The Network becomes the Computer...

Tue, 2013-09-10 05:21
The Network becomes the Computer...It's an idea that I have never really been able to express in such a simplistic and elegant way as what was achieved by the technical writer(s) of the Glassfish Open Message Queue Release 5.0 Technical Overview guide:

The easiest way to integrate heterogeneous components is not to recreate them as homogeneous elements but to provide a layer that allows them to communicate despite their differences. This layer, called middleware, allows software components (applications, enterprise java beans, servlets, and other components) that have been developed independently and that run on different networked platforms to interact with one another. It is when this interaction is possible that the network can become the computer.

The idea that the network and application services becomes the equivalent of the processors integrated circuit and processing units. Continuing this abstraction to it's epoch, the internet, the power of Service Orientated Design becomes self evident.

Reference: Message Queue Technical Overview

Oracle Fusion Applications 101: BI & Reporting

Wed, 2012-02-29 12:53
Oracle Fusion Applications provides an extensive range of BI Reporting tools and capabilities all tightly integrated with the FA user experience (UX).

The Business Intelligence and Reporting infrastructure is delivered by Oracle Business Intelligence Enterprise Edition, OBIEE provides analysis tools, interactive dashboards, alerts and an enterprise reporting engine that lies at the heart of the BI and Reporting capability for FA. A number of BI products are integrated with OBIEE to deliver the FA BI and Reporting expierience:

Oracle Business Intelligence Publisher (BIP) - The latest incarnation of the old XML Publisher, a pixel perfect reporting tool, providing a complete enterprise solution for authoring, managing, and delivering reports from multiple data sources (SQL, ADF-BC View Objects, XML) in multiple formats (PDF, Excel, HTML) through multiple channels (E-Mail, Print, File).

Oracle Business Intelligence Applications (OBIA) - A prebuild data warehouse for FA transactional data, provides the warehouse database schema and the logic that extracts data from the Oracle Fusion Applications transactional database and loads it to the warehouse; OBIEE reporting tools like Answers and Dashboards are used to query data.

Oracle Transactional Business Intelligence (OTBI) - Allot of confusion and hype around OTBI, will dedicate my next post to it, follow me on twitter @FusionApps101.

ESSBASE"Extended Spread Sheet dataBASE", selectively used to enhance the FA reporting capability, used by Fusion Financials in the Fusion Accounting Hub application to delivery real-time analytic reporting on General Ledger Balances.

Like most things with Fusion Applications, the BI Reporting strategy and capabilities are extensive and initially somewhat bewildering. It takes time to wrap your head around Oracle's master plan for OLTP BI and Reporting, but WOW what a brave new world!

Oracle Fusion Applications 101: Enterprise Scheduling Service

Sat, 2012-02-18 22:58
I suspect these posts will continually try to relate functionality in Fusion Applications (FA) with my background in Oracle e-Business Suite (EBS), so apologies if your from the JD Edwards, PeopleSoft or Siebel crowd.

SAP? Well no apologies or sympathy, we all have our problems.

The Enterprise Scheduling Service (ESS) provides the EBS Concurrent Manager equivalent service in FA but with an extended list of features and functionality. The Enterprise Scheduler is a J2EE application that provides schedule based callbacks to other applications to run their jobs, it does not execute the jobs itself.

Here is some interesting points to note:
  • Completely Metadata driven: the metadata consists of job definitions, including the executable class, parameters and schedules. All Metadata is created using Oracle JDeveloper, limited functionality via FA ESS Job Definition UI to register a Job.
  • Job Definition or Job = Concurrent Program in EBS.
  • Job Set = Request Set in EBS, sequential or parallel set of Job Steps, where a Job Step can be a single Job or another Job Set.
  • Different job types, including JAVA, SQL, PL/SQL, SQL*LOADER, C, HOST and BIPublisher.
  • Includes features like Incompatibility, Schedules and Workshifts.
  • Monitoring of jobs through ESS Monitor UI and/or Oracle Fusion Applications Control (Enterprise Manager)
Want to know more, see the Oracle® Fusion Applications Developer's Guide for Oracle Enterprise Scheduler for more detail.

#OracleFusionApplicationLesson 2 for Oracle EBS Developers: Your going to be defining concurrent programs through JDeveloper.


Oracle Fusion Applications 101: Bye, Bye PL/SQL

Wed, 2011-10-19 13:29
Starting to get hands on with Oracle Fusion Applications (OFA), one of the first clear indications that OFA is a completely different beast compared to Oracle EBS is by looking at the amount of PL/SQL packages used in EBS 12.1.3 compared to OFA 11.1.1.5.1:

-- Oracle EBS 12.1.3 --
SELECT COUNT(*)
FROM DBA_OBJECTS
WHERE OBJECT_TYPE = 'PACKAGE BODY'
and owner not in ('SYS','SYSTEM');

COUNT(*)              
----------------------
47929    

-- Oracle Fusion 11.1.1.5.1 --
SELECT COUNT(*)
FROM DBA_OBJECTS
WHERE OBJECT_TYPE = 'PACKAGE BODY'
AND OWNER NOT IN ('SYS','SYSTEM');

COUNT(*)              
----------------------
3677

In EBS 12.1.3 the majority of Business Logic was developed in PL/SQL, either in server side Packages or contained in Forms and Reports native PL/SQL. Since 11.5.10 and the introduction of OAF, allot of new Business Logic has been developed in JAVA, contained in BC4J Entity, View and Application Module objects. With Fusion Applications, the entire product is developed as a Java Enterprise Application.

As we can see from the amount of PL/SQL packages, only a small amount of business logic runs outside of JAVA, predominantly in PL/SQL for more data-intensive tasks.

#OracleFusionApplicationLesson 1 for Oracle EBS Developers: Get your JAVA on!

Oracle EBS Customization and Extension - OAF vs ADF vs APEX vs Forms

Fri, 2011-05-20 06:04
The E-Business Suite Technology Group recently released a whitepaper: Extending E-Business Suite 12.1.3 using Oracle Application Express. In summary, "This new whitepaper outlines how to extend Oracle E-Business Suite 12.1.3 (and higher) functionality using Oracle Application Express. Recommended architecture and security considerations are discussed in detail." For some time now EBS customers have used APEX to extend EBS, with the release of this whitepaper the EBS Tech group has acknowledged it's growing use and have provide recommendations and guidelines for standardised integration.

What's this all about some might ask, is Oracle moving to incorporate APEX as part of the default EBS tech stack? What about OAF? Isn’t Fusion Applications build on ADF, so what's up? Well when it comes to Oracle EBS extension and customization, OAF is still top dog, the E-Business Suite Technology Group continues to recommend OAF for EBS extensions.

Without a doubt, ADF is the future, it’s a very powerful alternative to OAF, it provides an array of new functionality and is used to develop Oracle Fusion Applications. If you are planning a stand alone application, not requiring the tight integration provided with OAF, ADF would be an excellent choice. But where Oracle EBS R11.X and R12.X is concerned, it’s always recommendable to use a tool set that is part of the current tech stack and provides tight integration i.e. security, flexfields, personalization etc.

I have to come clean here, I have never been a supporter of using APEX to extend EBS, but I am glad to see the E-Business Suite Technology Group laying down some standards and guidelines. Whatever the motivation for choosing APEX, and in my experience it’s usually a OAF skills shortage problem, it’s good to know that Oracle is bringing some order to the current free for all approach to APEX extensions.

Forms? Dead, move on.

Although ADF is the future and APEX is now "supported", the Oracle EBS UI is and will continue to be developed using OAF, it’s powerful personalization and extension framework, plus transparent upgrades and seamless integration makes OAF the number one choice in EBS extension and customization.

Finding the Cost of an Index

Thu, 2010-09-23 05:41
Building and maintaining an index structure can be expensive, and it can consume resources such as disk space, CPU, and I/O capacity.

According to the Oracle Database Performance Tuning Guide 10g Release 2 (10.2): "...each index maintained by an INSERT, DELETE, or UPDATE of the indexed keys requires about three times as much resource as the actual DML operation on the table. What this means is that if you INSERT into a table with three indexes, then it will be approximately 10 times slower than an INSERT into a table with no indexes".

So let’s attempt to demonstrate this estimate. Let’s start out with one of the largest tables in the Oracle E-Business Suite; ONT.OE_ORDER_LINES_ALL the table stores sales order lines for the Order Management module. I have recreated the table and associated indexes from a 11.5.10.2 installation on a Oracle 10.2 XE database.

Some facts on my testing:
  • The ONT.OE_ORDER_LINES_ALL table contains 340 columns.
  • Standard indexes consists of 1 unique reverse key index and 17 non unique indexes, together they index 26 columns.
  • There are 14 custom non unique indexes covering 35 columns (9 function based).
Test 1: Insert 20000 rows using Insert with select sub query.

With no indexes: Avg 2.5 Seconds.
With standard indexes: Avg 6 Seconds.
With standard and custom indexes: Avg 18 Seconds.

Test 2: Insert 20000 rows using Bulk Collect Cursor and For Loop with Insert:

With standard indexes: Avg 8 Seconds.
With standard and custom indexes: Avg 22 Seconds.

I did not experience the 10 times slower estimate made by the Oracle Performance Tuning guide but the custom indexes significantly degraded insert performance.

So what is custom indexing doing to your Oracle EBS performance?

I'm Dumping TOAD, Helloooo Oracle SQL Developer!

Wed, 2008-02-13 07:46
It's already come around, out of nowhere the price of flowers and greeting cards increases ten fold and that special one starts leaving hints all around the house. Yes, Valentines day, loves is in the air although with a very fake and commercial smell to it. In keeping with the love theme I have decided to announce my separation from TOAD, I have found somebody new, a young new model, little ruff around the edges but with loads of possibilities and the best of all she's much cheaper (Not that kind of cheap...).

I have been looking to move over from TOAD to Oracle's SQL Developer (OSD) since it's initial incarnation as Raptor, but have always found some key feature missing from the product. Recently I have decided to attempt the crossover again, removing TOAD from easy desktop access and focusing on doing all work previously handled by TOAD through OSD. At the start I had to make frequent trips back to TOAD, unable to find certain functions and tools or just getting frustrated with the unfamiliar interface. But as I started using OSD more and more I discovered those familiar TOAD tools in there OSD disguise, and began to appreciate the added functionality provided by OSD. It's not been easy and at first getting the preferences right for your preferred setup may be a little tricky, but once familiar with the new interface and the location of those favourite tools and functions you'll forget about that first love pretty soon.

My Top tips for migrating from TOAD to Oracle SQL Developer
  1. Intentionally or not, Oracle has placed allot of the functions and tools used in TOAD in the same navigation path in OSD, so if your stuck just remember how you accessed it in TOAD and 9 out of 10 you should have the same functionality available.
  2. Save code for later use, highlight the code and right click, select Save Snippet. They can later be retrieved by using menu option View-> Snippets
  3. Search database objects using menu option View -> Find DB Objects

Please feel free to contribute any tips you might have for making the transition a little easier, happy Valentines day.

OAF Key Do's and Don'ts (Part 2) - Performance Tuning: "Top 10" OA Framework Development Rules

Tue, 2007-07-03 14:10
1) ALWAYS use design time view objects (VOs) rather than dynamic VOs. Dynamic VOs have to be described by BC4J through an additional execute call for the VO prepared statement, and they potentially result in non shareable SQL due to different combinations.

2) ALWAYS set precision for all columns in the VO. This reduces the VO memory footprint. Without a set precision, for example, all String columns default to 4KB in size each.

3) AVOID calling VO.getRowCount to check for existence. getRowCount causes the entire VO row set to be fetched back to middle tier.

4) NEVER call VO.getEstimatedRowCount. getEstimatedRowCount executes select count(*) on the VO. This count is not guaranteed to stay the same, thus the method name.

5) ALWAYS call registerOutParameters with proper precision for callable statements. This reduces the callable statement memory footprint. Without a set precision, for example, all varchar columns default to 32KB.

6) ALWAYS use Oracle-style binding (:1, :2) in your SQL and DO NOT use JDBC style binding (?). This avoids parsing SQL at runtime to do String replacement.

7) AVOID coding generic VOs just to try to reuse them. The "one VO fits all"approach adds complexity to your SQL, increases number of attributes and VO memory footprint.

8) DO NOT execute searches by default nor allow blind queries.

9) Use PNG format not JPEG for BI graph beans.

10) Use JDeveloper to profile your code. JDeveloper 9i has memory, CPU and
event profilers.

OA Framework or ADF?

Sat, 2007-06-30 02:00
Check out Sara Woodhull's article on OA Framework and ADF.

OAF Key Do's and Don'ts (Part 1) - "Top 10" Golden Rules

Wed, 2007-06-20 12:36
I don't know how many of you have come across this in the OAF Devguide, it was only by change that I found it, thought I'd share:

There's a lot to learn when getting started with the OA Framework, but the following list of rules are so universal -- and so fundamental -- they should be familiar to anyone who's doing Framework development.

1) ALWAYS try to declaratively define your UI. Resort to a programmatic layout only if the UI cannot be implemented declaratively. Programmatic layouts are difficult to customize (they don't leverage the Personalization Framework) and may diverge from the UI Guidelines over
time.

2) NEVER change your UI layout properties in processFormRequest(). ALWAYS make changes in processRequest(), even if that means handling an event in processFormRequest() and then redirecting back to the same page. This ensures that the web bean hierarchy is in a stable state when the page renders.

3) NEVER use index numbers to find beans when you want to change their properties. ALWAYS search by name. Index numbers can change during processing.

4) NEVER change the properties of a parent bean from a child bean. This is a poor design practice that hampers reuse while introducing fragile code (particularly if the child code executes too late in the page rendering cycle to properly affect the parent).

5) NEVER instantiate Beans using "new OA*Bean()". ALWAYS use the createWebBean() factory methods available on the OAControllerImpl class. Not all Bean properties are initialized correctly when you use "new."

6) NEVER create Form Beans in code (this means NEVER add nested Form beans to a page; your Page Layout region should be the only form region). Multiple form Beans on a page are not supported and can result in strange runtime behaviors.

7) NEVER count on your Application Module using the same database connection in subsequent requests. For example, NEVER post and commit in separate requests. For performance reasons, the Framework will start pooling and reusing connections in 5.7 instead of holding onto a single connection throughout the life of an Application Module.

8) NEVER use JDBC directly unless you're calling a PL/SQL routine (you should use a view object instead, and if possible, the view object should be defined declaratively and not programmatically).

9) NEVER add member variables UNLESS THEY ARE TRANSIENT OR FINAL to view objects, Controllers, entity object, view rows and Application Modules.

10) ALWAYS adhere to the Self-Service Performance Guidelines

Call PL/SQL from OAF

Mon, 2007-03-26 04:33
In many situations developers need to execute PL/SQL code from there OAF application, be it legacy code or complex database manipulation better suited for PL/SQL.

The following example calls a PL/SQL procedure, passing in and receiving back parameter values. To ensure we athere to the MVC architecture, you must execute this code from your Application Module (AM). The method returns a HashMap object containing the two return values from the procedure, the HashMap can be returned to your controller, and used to raise a message for the user.

The following code is placed in your region or page controller, to call the method from your AM:

// Invoke the method
HashMap returnValues = (HashMap) am.invokeMethod(
"executePlsql");

// Get the returned values from the method
String status = (String) returnValues.get("Status");
String message = (String) returnValues.get("Message");

if (!status.equals("SUCCESS"))
{
am.invokeMethod("rollback");

// ERRORS from executePlsql
MessageToken[] tokens =
{
new MessageToken("STATUS", status),
new MessageToken("MESSAGE", message),
};

OAException errorMessage = new OAException("XX",
"XX_PLSQL_ERR", tokens,
OAException.ERROR, null);

pageContext.putDialogMessage(errorMessage);

The method to call your PL/SQL code, created in your page or regions AM:


import com.sun.java.util.collections.HashMap;
import java.sql.CallableStatement;
import java.sql.SQLException;
import java.sql.Types;

public HashMap executePlsql(String objectId, String objectSubType)
{
CallableStatement st = null;
HashMap returnValues = new HashMap(2);

try
{
String stmt = "BEGIN xx_pkg.xx_procedure( " +
"p_object_id => :1, " +

"p_object_sub_type => :2, " +
"p_status => :3, " +

"p_message => :4); END;";

OADBTransaction tr = getOADBTransaction();

st = tr.createCallableStatement(stmt, 1);


// Bind the input parameters
st.setInt(1, Integer.parseInt(objectId));
st.setString(2, objectSubType);


// Register return variables
st.registerOutParameter(3, Types.VARCHAR);
st.registerOutParameter(4, Types.VARCHAR);

st.execute();

// Assign returned values to variables
String status = st.getString(3);
String message = st.getString(4);

st.close();

// Populate HashMap with return variables
returnValues.put("Status", status);
returnValues.put("Message", message);

OAExceptionUtils.checkErrors(tr);
}
catch (SQLException sqle)
{
throw OAException.wrapperException(sqle);
}

return returnValues;
}

OAF White Paper

Mon, 2007-03-26 03:58

I recently presented a white paper at the 2006 South African Oracle User Group, an introduction to OAF development called: Oracle Applications Development Framework - The New Frontier

I hope this will help new comer's to get a good introduction to OAF development, extension and personalization. If there are any questions related to the white paper, please drop me a comment and I will reply a.s.a.p.

Please leave me a comment with your e-mail address and will get the document to you.

UK hear I come

Thu, 2007-03-15 00:45
First and foremost I would like to apologise for not updating the blog for the past couple of month's, come to think of it, it's my first blog for 2007.

Apart from being extremely busy building a custom bolt-on OAF application for a large multinational, I have been applying to work in the United Kingdom under the government's Highly Skilled Migrant Program (HSMP).

Well I have been accepted and am currently looking for some work before I arrive in the UK on the 1st of May, so any help would be highly appreciated ;-). I am also in the process of creating a new blog to detail my experiences living, working and playing in the UK, so check back soon for a link.

If there are any particular areas of the OAF you would like me to explore more, please drop me a comment and I will consider doing a post.

Raise a Business Event from your OAF Page

Tue, 2006-11-28 01:58

After quite a while of inactivity, due partly to a frantic schedule and the addition of a new obsession in the form of my new mountain bike, I am back on the horse and very excited to start blogging again. A Big thanks to Steven Chan for profiling the Oracle EBD Developer on his blog, just the kick I needed to get going again.

I recently had the opportunity to present the 11i/2.6 Implement Oracle Workflow course at Oracle South Africa, which turned me onto business events in a big way. Now I have previously blogged about launching an Oracle Workflow process from an OAF page using the oracle.apps.fnd.framework.webui.OANavigation class. In this post I would like to demonstrate how we can raise a business event through the Oracle Business Event System (OBES), which enables you to utilize the extensive functionality of the OBES to launch workflow processes and perform a number of diverse actions.

import oracle.apps.fnd.wf.bes.BusinessEvent;
import oracle.apps.fnd.wf.bes.BusinessEventException;
....
...
..
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
{
super.processFormRequest(pageContext, webBean);

if (pageContext.getParameter("Submit") != null)
{
// Get Transaction
OAApplicationModule am = pageContext.getApplicationModule(webBean);
OADBTransactionImpl oadbTrx = (OADBTransactionImpl) am.getOADBTransaction();

// Create BE Object
String eventName = "companyabc.oracle.apps.xx.event.createrequest";
String eventKey = "1001-1";

BusinessEvent busEvent = new BusinessEvent(eventName, eventKey);

try
{
// Set Event Property
busEvent.setStringProperty("XX_TRX_TYPE", "NEW_REQUEST");

// Raise Event
busEvent.raise(oadbTrx.getAppsContext().getJDBCConnection());
}
catch (BusinessEventException exception)
{
// Set Message Tokens
MessageToken[] tokens =
{ new MessageToken("EVENT_EXCEPTION",
exception.toString())
};

OAException eventErrorMessage = new OAException("XX",
"XX_RAISE_EVENT_ERROR", tokens);

oadbTrx.rollback();
....
...
..
}

oadbTrx.commit();
....
...
..
}
}
}

Personalization and the MDS Database Repository

Wed, 2006-08-23 04:04
All declarative User Interface components are stored either in XML files, in a format defined by MDS (Meta Data Services) Schemas, or in the MDS repository tables. When a personalization is created through the OA Personalization Framework it is added on top of the base product meta data. The personalization does not overwrite the existing base product UI and are therefore preserved during upgrades and patches. The MDS repository is supported by the JDR_UTILS PL/SQL package, used to query and maintain the repository:

SQL> set serveroutput on
SQL>
begin
jdr_utils.listcustomizations
('/oracle/apps/icx/por/req/webui/ShoppingCartPG');
end;
/
/oracle/apps/icx/por/req/webui/customizations/site/0/ShoppingCartPG
/oracle/apps/icx/por/req/webui/customizations/org/44/ShoppingCartPG

PL/SQL procedure successfully completed.
SQL>

The MDS database repository consists out of four tables:
  • JDR_PATHS: Stores documents, packages and there parent child relationship.
  • JDR_COMPONENTS – Stores document components.
  • JDR_ATTRIBUTES – Stores attributes of document components.
  • JDR_ATTRIBUTES_TRANS – Stores translated attribute values of document components.

SAOUG Conference 2006

Thu, 2006-08-10 02:15

Just got some good news, I have been accepted as a speaker at the South African Oracle User Group Conference 2006. I will be presenting my paper - "Oracle Applications Framework Development - The New Frontier", which is an introduction to the world of OAF development, personalization and extension. My presentation will be a 45 minute session scheduled for 9:55 AM Wednesday 27 September, so don’t miss it.

The conference is held at Sun City and runs from the 25th to the 27th of September, if you are interested in attending visit the SAOUG website at: http://www.saoug.co.za


Oracle Workflow Notifications & OAF

Wed, 2006-07-26 03:39

If you wanted to display HTML formatted content in an Oracle Workflow Notifications before the release of FWK.H you had to use one of the following options:

  • PLSQL Documents - 32K size limit
  • PLSQLCLOB Documents – CLOB

PL/SQL development of HTML notifications that contains tables and complex layouts can be difficult and very time consuming. It requires the developer to have a very good knowledge of HTML and makes the implementation of a standard “look and feel” very difficult.

With the implementation of FWK.H we are able to leverage the power of the OAF to create multifaceted Workflow notifications. Also called JRAD notifications, FWK embedded regions is nothing more then a normal OAF region displayed in the body of a Oracle Workflow notification.

Incorporating an embedded FWK region in a Workflow notification consists of the following steps:

  1. Create an OA Component Region containing the Headers, items and tables you want to display in the body of you notification. Developing and implementing this region is done in the exact same way you would when creating a region for an OAF custom page. Remember to create a dedicated Application Module (AM) for your region that will contain all the View Object (VO) required for your layout.
  2. In core applications, create a SSWA jsp function where the WEB HTML call is: OA.jsp?page=/companyabc/oracle/apps/xx/module /webui/XxRegionNameRN
  3. Create a new Workflow attribute:
WorkFlowAttribute

Value: JSP:/OA_HTML/OA.jsp?OAFunc=XX_PO_DOCUMENT_RN_NTFN &poHeaderId=-&PO_HEADER_ID-

XX_PO_DOCUMENT_RN_NTFN is the custom function created in core apps and &PO_HEADER_ID is a workflow attribute I am passing back as a parameter to the region's controller to initialize my VO.

4. Add the new attribute to your message:

WorkFlowAttribute

Save your workflow and initialize a new instance, the notification body should now be populated by the OAF region. No messy HTML coding, quick, easy and you can reuse the region in your OAF custom pages.


OAF and Oracle Workflow

Tue, 2006-07-18 02:52
Most of the custom development work I have done on OAF has required me to interact with Oracle Workflow, specifically to handle approvals and interfaces. The class oracle.apps.fnd.framework.webui.OANavigation provides Java wrappers for Oracle Workflow Engine's PL/SQL APIs.

The class is actually intended for use when creating and managing OA Framework Page Flows that are defined by Oracle Workflow, but can also be used to interface with Oracle eBS Workflows.

Example Code - Launching a custom Oracle eBS Workflow from a OAF page:

import oracle.apps.fnd.framework.webui.OANavigation;
import java.math.BigDecimal;

public void launchCustomWorkFlow(OAPageContext pageContext)
{
String wfItemType = "CUSTOM";
String wfProcess = "CUSTOM_PROCESS";
String wfItemKey = "1001-1";

OANavigation wfClass = new OANavigation();

// Create Workflow Process
wfClass.createProcess(pageContext, wfItemType, wfProcess, wfItemKey);

// Set Number Attribute: ITEM_INTERFACE_ID
wfClass.setItemAttrNumber(
pageContext,
wfItemType,
wfItemKey,
"ITEM_INTERFACE_ID",
new BigDecimal(1));

// Set Text Attribute: ITEM_NAME
wfClass.setItemAttrText(pageContext, wfItemType, wfItemKey,
"ITEM_NAME", "ITEM1");

// Start Workflow Process
wfClass.startProcess(pageContext, wfItemType, wfProcess, wfItemKey);
}

Getting started with OAF development

Tue, 2006-07-11 02:45

I have recently received a number of queries related to OAF development, particularly regarding the quickest way to get started. I will handle these questions in a two part post, in the first I will aim to provide you with the basic software and documentation requirements to get started. In the second post we will have a look at a couple of common OAF extension tasks.

OAF development can be split into two major categories namely:

  • Personalization refers to the ability to declaratively alter the UI to suit user or business needs.
  • Extensibility refers to the ability to programmatically extend an application's functionality.

Personalization is the quickest and easiest way of altering the OAF UI, changes are protected from future upgrades and most personalization tasks can be performed by functional consultants or even trained users. If you have any requirement to alter the OAF UI, personalization should be your first stop. The following document will be of great help in understanding and implementing OAF personalization:

Metalink Doc ID: 236618.1 - OA Framework Personalization and Extensibility Guide: Version 5.7+

Extensibility is used when you are required to implement changes to functionality not provided by personalization, or when you are required to develop add-on/new functionality to the OAF UI.

The following steps will get you up to speed with the correct software and documentation:

  • Follow post: Find the right JDeveloper Patch for OAF development, once you determine the correct JDeveloper version for your development environment you can proceed to download the JDev patch from Metalink.
  • Once downloaded, follow the installation step set out in the OAEXT_README.txt document, located in the root directory of the patch file.
  • Oracle included excellent documentation with the JDeveloper patch, after installation you can locate the documentation index here: JDEV_INSTALL_DIR/jdevdoc/index.htm
  • Follow “You are Customer, Consultant or Support Representative” in Chapter 1: Setting Up your Development Environment of the OA Framework developers guide, make sure you complete all setup steps successfully.

Congratulations you have successfully installed and configured your new development tool, now it’s time to get into the documentation. I suggest you complete Chapter 1, 2 and 3 of the OA Framework developers guide.

You can then proceed with the Oracle Applications Framework ToolBox Tutorial, it is an excellent step by step introduction to OAF development and extension, and will introduce you to all the key concepts required for OAF customization.

Keep tuned for part 2: Include a new column - Extending a standard LOV view object.

OAF - Tables and PPR

Thu, 2006-06-29 02:00
It has just taken me two days to implement PPR on a table, yes 2. I might be a little slow but the developers guide was of very little help and I was unable to find any worthwhile examples.

When planning to implement PPR in tables it is very important to decide early on what type of PPR you want to implement. Let’s take a step back, when implementing PPR on normal fields outside a table, there is only one instance of each field to modify. But when working in a table there might exist an infinite amount of rows each with an instance of the specific field.

If functionality requires that all instances of the PPR field behaves in the same fashion, PPR using SPEL bindings will work perfectly, and is very quick and easy to implement. On the other hand if you require each instance of the PPR field to act independently based on another value in its table row, you will have to look at Bound Values or Content Switcher.

In this post I will focus on Bound Values as this is the solution I implemented, the Dev guide specifies the following consideration when having to decide which solution to use:

“You should limit your use of Switchers to within tables, particularly when you want to switch between different kinds of web beans, such as a poplist or a checkbox. When you have only one type of web bean, but the value of an attribute on that web bean varies at runtime, then you should implement that attribute as a bound value rather than as a Switcher.”

PPR using Bound Values:
  • Add a transient attribute to your table view object; you will bind this attribute to the value of the PPR column’s RENDERED attribute.
  • Modify the transient attribute getter method to change the value depending on your PPR requirement. In my case I needed to render the Supplier Name field based on the value of the SupplierYn attribute in the table view object:

public Boolean getSupplierNameRendered()
{
String yn = getSupplierYn();
Boolean tf = Boolean.TRUE;

if ("Y".equals(yn))
{
tf = Boolean.TRUE;
}
else if ("N".equals(yn))
{
tf = Boolean.FALSE;
}

return (Boolean) tf;
}
  • Now bind the Supplier Name attribute to the transient attribute in the page controller’s processRequest method:
OAMessageLovInputBean supplierNameBean = (OAMessageLovInputBean) webBean.findIndexedChildRecursive(
"SupplierName");

supplierNameBean.setAttributeValue(
RENDERED_ATTR,
new OADataBoundValueViewObject(supplierNameBean,
"SupplierNameRendered", "SupplierVO1",
false));
  • The rendering of my attribute was based on the value of the attribute “SupplierYn” in the view object; to enable the updating change “Action Type” attribute to “fireAction”:

There it is four easy steps to enable PPR on a table.

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