Subject: “Extreem RAD : Live Web Applicatie Ontwikkeling met Oracle Application Express”
Pro: Roel Hartman
Office: Arnhem, the Netherlands
Date: 28 oktober 2008

Subject: “Standardizing SOA with Oracle’s Application Integration Architecture”
Pro: Adri Greeve
Office: Rotterdam
Date: 13 november 2008

Subject: “Practical Approach to SOA Adoption”
Pro: Edwin van Dis
Office: Amstelveen
Date: 27 november 2008

Register for a Pro4Pro session

On Monday the 20th of October Logica has invited Thomas Erl to speak on the Principles of Service Design and Patterns to transform the most important challenges into a successful realization of a Service Oriented Architecture. Business analyst, functional designers and architects will gain new valuable insights on the modeling of services and supporting architecture.

About Thomas Erl:
Thomas Erl is the world’s top-selling SOA author, Series Editor of the “Prentice Hall Service-Oriented Computing Series from Thomas Erl” (www.soabooks.com), and Editor of The SOA Magazine (www.soamag.com). With over 95,000 copies in print world-wide, his books have become international bestsellers. His most recent titles “SOA Design Patterns” (www.soapatterns.com) and “Web Service Contract Design and Versioning for SOA” were co-authored with a series of industry experts and are being released in the latter half of 2008.

Thomas is also the founder of SOA Systems Inc. (www.soasystems.com), a company specializing in SOA training, certification, and strategic consulting services with a vendor-agnostic focus. For more information, visit www.thomaserl.com.

Program
18.00 uur Welcome & diner
19.00 uur Welcome speach
19.15 uur Thomas Erl – ‘How to overcome the key challenges within SOA’
20.30 uur Drinks

The presentation will be in English of course.

Location
Logica, Prof. W.H. Keesomlaan 14 in Amstelveen

There is more info on the Logica site (in Dutch). You can also register (”aanmeldingsformulier”) there.

• Oracle11g: Advanced PL/SQL
• PL/SQL Programming Concepts: Review
• Designing PL/SQL Code
• Working with Collections
• Using Advanced Interface Methods
• Implementing Fine-Grained Access Control for VPD
• Manipulating Large Objects
• Administering SecureFile LOBs
• Performance and Tuning
• Improving Performance with Caching
• Analyzing PL/SQL Code
• Profiling and Tracing PL/SQL Code
• Safeguarding Your Code Against SQL Injection Attacks

More info: http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=155

The purpose of this app is to be able to track longrunning contracts with their renewalperiods. One month before you should end the contract (checked on contract enddate) you’ll receive an email. I used Oracle’s DBMS_SCHEDUAL to call the procedure that sends out the email. Also, it has an authentication scheme so that different users can use this online app. Although it’s dutch, everyone can apply now.

 http://apex.oracle.com/pls/otn/f?p=23729

The seminar was well received and we got good evaluations. All in all a great day. You can find the presentations here www.logica.dk/owsm

Click here to see the full UKOUG agenda online.

Both presentations aren’t fully booked yet, so if you have the time and happen to be around…you can add these to your OOW-schedule!

Should we use the available calendar?
Could we use a tabular form?
Do we use standard APEX DML report/forms?

Well, this is what we did

The design

1. Collect the data for the planboard view, it will show the truck number (equipment number) and the orders in the days of the week:

Datamodel

Viewquery

SELECT trucks.truck_id
,      to_char(to_date(load_date), 'YYYYIW') load_week
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'maandag'  , order_id, null )) mon
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'dinsdag'  , order_id, null )) tue
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'woensdag' , order_id, null )) wed
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'donderdag', order_id, null )) thu
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'vrijdag'  , order_id, null )) fri
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'zaterdag' , order_id, null )) sat
,      max(decode( rtrim(to_char(load_date,'day', 'nls_date_language = DUTCH')), 'zondag'   , order_id, null )) sun
FROM   trucks,
     orders
WHERE  orders.truck_id (+) = trucks.truck_id
GROUP BY trucks.truck_id,
to_char(to_date(load_date), 'YYYYIW')
ORDER BY trucks.truck_id

2. The report region has the planboard view as source. For every column box (value or not) a unique id is created . These id’s make sure that a column box is a container where you can drop items in. The column boxes with a value, should show the item with its value.

Report buildup

The column formatting for every day column

3. The report region must also call a javascript function CreateDragContainer, for every container in the region. While doing this, all items inside a container (or just the values selected with the view) become draggable. With the unique id’s, movement can be tracked, and when an order item is dropped in a container, the rest of the handling can start. This is all done by Javascript, where credit must go out for a part of the dragging & dropping to Mark Kahn at webreference.
The most important part is that the id’s are filtered, and passed to application items, and that an AJAX call is made to an application process. Here’s the AJAX call code:

var ajaxRequest = new htmldb_Get(null,&APP_ID.,’APPLICATION_PROCESS=updatePlanbord’,null);
if (curTarget.id.substr(0,3) == ‘new’){
ajaxRequest.add(’P_TARGET’, curTarget.id.substring(13, curTarget.id.length));
ajaxRequest.add(’P_ADDACTION’, ‘true’);
var cDay = curTarget.id.substring(9,12);
}else{
ajaxRequest.add(’P_TARGET’, curTarget.id.substring(9, curTarget.id.length));
ajaxRequest.add(’P_ADDACTION’, ‘false’);

var cDay = curTarget.id.substring(5,8);
}
var cDayDate
if (cDay == ‘mon’){
cDayDate = html_GetElement(’P1_MON_DAT’).value;
}else if (cDay == ‘tue’){
cDayDate = html_GetElement(’P1_TUE_DATE’).value;
}else if (cDay == ‘wed’){

cDayDate = html_GetElement(’P1_WED_DATE’).value;
}else if (cDay == ‘thu’){
cDayDate = html_GetElement(’P1_THU_DATE’).value;
}else if (cDay == ‘fri’){
cDayDate = html_GetElement(’P1_FRI_DATE’).value;
}else if (cDay == ’sat’){
cDayDate = html_GetElement(’P1_SAT_DATE’).value;
}else if (cDay == ’sun’){
cDayDate = html_GetElement(’P1_SUN_DATE’).value;
}

ajaxRequest.add(’P_PARENT’, rootContainer.id.substring(9, rootContainer.id.length));
ajaxRequest.add(’P_LOADDATE’, cDayDate);

ajaxRequest.GetAsync(f_AsyncReturn);

4. The application process can do two things, UPDATE an existing order when it is dropped in another truck, or UPDATE an existing order when it had no truck (open action) and was dropped in another truck. Here’s the code:

DECLARE
type_action varchar2(10);

BEGIN
type_action := ”||:P_ADDACTION||”;

IF type_action= ‘false’ THEN

UPDATE orders SET truck_id = :P_PARENT WHERE order_id = :P_TARGET AND to_date(load_date, ‘dd-mm-yyyy’) = to_date(”||:P_LOADDATE||”, ‘dd-mm-yyyy’);

ELSIF type_action = ‘true’ THEN

UPDATE orders SET truck_id = :P_PARENT WHERE order_id = :P_TARGET;

INSERT INTO orders (ORDER_ID, DESTINATION, LOAD_DATE, TRUCK_ID) VALUES (ODERS_SEQ.nextval, NULL, to_date(”||:P_LOADDATE||”, ‘dd-mm-yyyy’), NULL);

END IF;
COMMIT;
EXCEPTION WHEN OTHERS THEN
htp.p(SQLERRM);
END;

After some CSS tricks and custom theming, you get the result you see in the browser. Needless to say, the client was quite impressed with the result, and I think it is another example of the flexibility APEX has to offer being in a web browser!

If you’d like to know more on this application and you’re at the Oracle Open World this year, vote for this presentation on Oracle Mix by clicking HERE