fredag, mars 31, 2006

How to Remove the Topic / Folder info in Metalink

Note, this post only applies to those who use the Oracle Support system Metalink.

When browsing articles in Metalink, by default the Folder and Topic information is displayed in the list of articles. This can by quite annoying, but it's easy to switch off.

To do this, just click on the 'Hide Folder / Topic' button just above the articles. See the picture below:

Once switched off, the list looks much neater, in my opinion, as shown below:

torsdag, mars 30, 2006

RL Language Rules Extension for JDeveloper

I have created an extension for JDeveloper, which makes it a bit easier to work with the Oracle Business Rules Language, RL Language within JDeveloper. Read more about it on OTN at:

måndag, mars 27, 2006

Callout from within Oracle Business Rules

Within Oracle Business Rules you sometimes need to make callouts to an external Object within the action part of your rule. This is very easy to achieve. Suppose that you have a class with an external method similar to:

package myPackage;
public class CallOut {
public CallOut() { }

public void test(String myVariable) {
System.out.println("Callout from Rules with argument: " + myVariable);

and you would like to call upon this method from within the action part of a rule. The first thing you need to do is also to import this class into your dictionary. Once done, you need to define a new RLFunction. This function needs to have 2 variables defined, one for the class itself, and one for the argument. The argument should have the argument type String, while the class needs to have the Type CallOut, or whatever your class is named. Within the function body you then define the actual function like:


Now you have a Rules function that you cal call upon from the action part of any rule within your ruleset(s), like:

Call callOut(, new CallOut () )

The RL code that is generated for such a task will look like:

function callOut(String message, myPackage.CallOut TestCallOut)
//RL literal statement
}// DM.callOut

for the function, this will be defined in the DM ruleset. The call will look like:

rule myRule
priority = 0;
fact myPackage.SomeFactObject v0_SomeFactObject && (
(v0_SomeFactObject.anAttribute <>
DM.callOut(v0_SomeFactObject.someArgument, new myPackage.CallOut());
} //end rule myRule;

I hope this will have shown you how-to make a callout from Oracle Business Rules to a method within an Object.

onsdag, mars 15, 2006

JDeveloper Subversion Extension EA1 Available on OTN

Oracle is providing a Subversion Extension for JDeveloper 10.1.3. It is officially available from OTN at this URL:

To install it, just follow the provided installation instructions.