Development

While building a demo of new Oracle ADF features for my OOW session, I came across some nice new functionality in the dvt status meter gauge component (dvt:statusMeterGauge), specifically the round one which has become quite popular in various Oracle Alta UIs.

Turns out you can turn the dial and cut it so it shows just parts of a circle.

By adding thresholds you can use it as a replacement for the dial gauge.

Here is how it can look: 

Here is the code used:

                            <dvt:statusMeterGauge orientation="circular" inlineStyle="width:150px; height:100px;"

                                                  id="statusMeterGauge1" maximum="25000"

                                                  value="#{bindings.Salary.inputValue}" minimum="0" startAngle="180" angleExtent="180"

                                                  title="Salary">

                                <dvt:gaugeMetricLabel rendered="true" id="gml1"/>

                                <dvt:gaugeThreshold id="gt1" maximum="4000" color="red"/>

                                <dvt:gaugeThreshold id="gt2" maximum="6000" color="yellow"/>

                                <dvt:gaugeThreshold id="gt3" maximum="20000" color="green"/>

                            </dvt:statusMeterGauge>

Very simple example:

set feed on;
-- simple table:
create table xt_curr1 as select level a,level b from dual connect by level<=1e4;
-- same table but with empty trigger:
create table xt_curr2 as select level a,level b from dual connect by level<=1e4;
create or replace trigger tr_xt_curr2 before update on xt_curr2 for each row
begin
  null;
end;
/

set autot trace stat;
update xt_curr1 set b=a;
set autot off;

set autot trace stat;
update xt_curr2 set b=a;
set autot off;
set feed off

drop table xt_curr1 purge;
drop table xt_curr2 purge;

SQL> -- simple table:
SQL> create table xt_curr1 as select level a,level b from dual connect by level<=1e4;

Table created.

SQL> -- same table but with empty trigger:
SQL> create table xt_curr2 as select level a,level b from dual connect by level<=1e4;

Table created.

SQL> create or replace trigger tr_xt_curr2 before update on xt_curr2 for each row
  2  begin
  3    null;
  4  end;
  5  /

Trigger created.

SQL> update xt_curr1 set b=a;

10000 rows updated.


Statistics
----------------------------------------------------------
         25  recursive calls
      10553  db block gets
         91  consistent gets
         18  physical reads
    3101992  redo size
        560  bytes sent via SQL*Net to client
        491  bytes received via SQL*Net from client
          3  SQL*Net roundtrips to/from client
          2  sorts (memory)
          0  sorts (disk)
      10000  rows processed

SQL> update xt_curr2 set b=a;

10000 rows updated.


Statistics
----------------------------------------------------------
         11  recursive calls
      20384  db block gets
         59  consistent gets
         18  physical reads
    4411724  redo size
        560  bytes sent via SQL*Net to client
        491  bytes received via SQL*Net from client
          3  SQL*Net roundtrips to/from client
          2  sorts (memory)
          0  sorts (disk)
      10000  rows processed

It's that time of the year - Oracle OpenWorld is taking place starting on Sunday - and my calendar is full of activities.

I'm going to be presenting on multiple tools and frameworks including sessions on Oracle Application Builder Cloud Service, Oracle JDeveloper and Oracle ADF, Oracle Developer Cloud Service and a session discussing which dev framework and tool is right for you. 

In case you want to catch me at #OOW16 here is my schedule:

Simplified Multichannel App Development for Business Users [CON2884] 
Monday, Sep 19, 1:45 p.m. | Moscone West - 2005 - A session where I'll demo how easy it is to create and host your own applications with Oracle Application Builder Cloud Service.

Oracle Application Development Framework and Oracle JDeveloper: What’s New [CON1226]
Tuesday, Sep 20, 4:00 p.m. | Moscone West - 2018 - A quick review of the new features we added in the 12.2.* releases of JDeveloper and ADF

Oracle Development Tools and Frameworks: Which One Is Right for You? [MTE6650]
Tuesday, Sep 20, 6:15 p.m. | Moscone South - 301- A session for all of those who are not sure which technology is right for them, or for those who want to ask me "is Oracle [fill in the product name] dead?"

A Guide to Cloud-Based Agile Development Methodology Adoption [CON1947]
Wednesday, Sep 21, 12:15 p.m. | Moscone West - 2018 - A demo focused session that show cases how Oracle Developer Cloud Service helps your team adopt agile development. 

No Code Required: Application Development and Publishing Made Easy [HOL7402]
Tuesday, Sep 20, 11:30 a.m. | Hotel Nikko - Nikko Ballroom III (3rd Floor)
Monday, Sep 19, 4:15 p.m. | Hotel Nikko - Nikko Ballroom III (3rd Floor) - Your two chances to try out  the new Oracle Application Builder Cloud Service and develop your first app

Agile Development Management and Continuous Integration Simplified [HOL7403]
Wednesday, Sep 21, 8:00 a.m. | Hotel Nikko - Nikko Ballroom III (3rd Floor) - Your chance to manage a whole development team agile process using Oracle Developer Cloud Service

I'm also going to be in the mobile theater in the mobile area in the demo ground on Tue and Wed at 10:30 doing a quick demo of ABCS and its mobile capabilities.

In between these sessions, you'll be able to find me at the Oracle Demoground doing some shifts in the Oracle ADF booth (which is in Moscone South far left corner) - the rest of our pods are close by including JET, DevCS, ABCS and even Forms :-)

And if I'll have any spare time, I'll try and catch some of the other session on this list of Dev tools and framework sessions

See you next week.

• Excessive CEO compensation--and excessive, destructive layoffs
• Union-busting activities
• Positive role of unions in society
• Police brutality
• NATO bombing of civilian targets in Serbia
• Managed Care
• National Rifle Association and gun control
• The for-profit prison industry
• Slashing social programs to finance tax cuts

• I have received at least an equal amount of emails praising this particular book, sometimes for the political content explicitly, sometimes simply for the technical content, indicating that my choice of examples was not problematic.
• O'Reilly & Associates reviewed the book's content and its lawyers did recommend making a few changes. (They didn't, for example, want me to explicitly and blatantly accuse a sitting governor of bribery.)
• This book became a subject of active debate among O'Reilly editors about what limits, if any, should be placed on an author's desire to include possibly controversial examples.
• Tim O'Reilly and I talked about this subject at length and he thought that it would make a great topic for public discussion. So here I am!

• Business-centric: Most examples used in technology books focus on how to make business work more efficiently, regardless of its impact on human society and the world as a whole. As a result, we constantly read about human-resource or personnel systems. And while examples frequently touch on education, these applications have more to do with managing students (the business side of education) than with improving the quality of education those students receive. All of this seems perfectly "natural" since the vast majority of technology is used by businesses to make profits. But does it have to be that way?

• Consumer-oriented: Many, many examples promote the perspective that the only reason we exist in this world is to buy things. Just about every book about the Internet focuses on some aspect of e-commerce, such as how to maximize the use of banner ads, how to grab and hold eyeballs, how to present product information dynamically.In 1999 Addison-Wesley published a truly marvelous book titled Refactoring: Improving the Design of Existing Code, by Martin Fowler. In it, Martin offers a systematic method for improving the quality of our code without affecting the interface to and behavior of that code. To demonstrate his techniques, the author offers a refreshing example: video rentals. Yet it still comes down to commerce. We are what we buy, not what we think and do with our lives outside of the exchange of items for money.
  
  
• Humans as numbered entities: This is particularly true in database-related books (including my own!). Technology is presented through a medium of scenarios that represent--and manipulate--humans as numbers. Just about any Oracle text you pick up is dominated by "emp-dept" examples: a personnel application that talks about salaries, bonuses, and commissions, when you were hired, which department you belong to, the name of an employee based on an employee_id, and so on. The message, so clearly presented in this dominant theme, is that we are defined primarily as workers and our value in life is derived from the contribution we make to our employer.

• Everything and anything as numbered entities: Hey, it's not just people! Technical examples extend the quantification approach to natural resources, information, entertainment, etc. Oracle also offers a standard demonstration base of tables and data for a sales/order entry system. This, of course, makes perfect sense in the world of Oracle--driven by the obsessive personality of Larry Ellison to sell, sell, sell software and services. (I own shares of Oracle stock and have benefitted directly from Larry's obsessions.)