Jbo Custom Validation Rules

I am having some difficulty in getting the UI component of a custom jbo validation rule to work correctly in JDeveloper. What I have so far is a working validation rule. I also have created a Java bean customizer class with a JPanel layout for the components. I see the JPanel in JDeveloper. Here is where I need a little help in the following areas:
1. Getting the attributes of the entity that I am assigning the validation rule to.
2. Writing out the correct XML, including any attributes from the bean so the bean will work correctly once the validation is used.
I see some methods like writeContents and writeChildren, but I am not sure when those methods get invoked.
So I am looking for some more documentation or examples of accomplishing my above goal. I have already looked through the ADF source code, but there are no Bean UI components that I could reference (unless I am looking in the wrong package).
Thanks in advance.

Ok, is there anyone else doing anything remotely like I am attempting to do? Or this is another case of it is not supported?

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How do you create custom validation rule in WS 9.2?!?!?!

Hello,
I am using Workshop 9.2. I created a page flow, and want to do some form validations.
I saw the simple 9.2 example, but it is only good for very basic validation, what if you have to validate the form field against a database, must you write a custom validation rule? HOW would you do this in 9.2 so that will still stay with the workshop/netui paradigm?
http://beehive.apache.org/docs/1.0.1/netui/validation.html
Keith

Hi Keith,
Staying within the declarative validation framework the answer is probably that you do need to write a custom validation rule and refer to it using the @Jpf.ValidateCustomRule annotation.
The NetUI Annotation Reference shows how the Struts validations are supported via the framework.
http://beehive.apache.org/docs/1.0.1/netui/annotations/pageflow_annotations.html
Specifically, if you look through the @Jpf.Validate* annotations, while most of these are "canned" common validations, there are a few that are more open-ended, such as @Jpf.ValidateMask and @Jpf.ValidateValidWhen.
Those two let you write the validation logic in the annotation while @Jpf.ValidateCustomeRule only refers to a custom rule in the struts validator file.
In any case, there is a validation rule editor which should help in authoring and managing the annotations. In the Page Flow Explorer or Page Flow Editor just right click on the action or form bean bean of interest and choose Validation Rules and the appropriate scope.
I hope that's of some use,
Troy

Custom validation rules

Using adf/bc with jdev 10.1.3.3. I've created a custom validation rule class according to the instructions in the adf guide. In that class, I've defined just one property, along with its getters/setters. I've registered my rule in the business component project and associated the rule to an entity attribute via the entity object editor. My problem is that I don't see any way for me to set the property/value of the property that's defined in the validation rule class. For example, in the SRDemo app, in the entity editor for ServiceRequest, if you highlight Validation in the left pane then select the AttributeMustExistInViewRowRule for the Status attribute and click the Edit button, you can set various property values that have been defined in the validation rule class. These values appear to then be updated to that entity's xml file. When I'm in my entity object editor and i've assigned a validation rule to an attribute, I can type in the error message text in the Edit Validation Rule dialog, but it says there are no properties to edit! I guess I haven't wired something together quite right? Note, I have not created the customizer and bean info classes for the design time aspect of this stuff. I assume that you do not absolutely need these classes to create and work with a customr validation rule? Anyone know what I'm doing wrong?

ok, i figured out the problem. The property/value fields in the Edit Validation Rule dialog will not appear until you've actually compiled the custom validation rule class. I had tried to create the validation rule class, register it with the bc project, and assign it to an entity attribute all without first compiling the class. I stumbled upon this 'fix' in jdev's help, which leads me to another question. For the help topic entitled Creating Custom Declarative Validation Rules for Oracle ADF Business Components, the instructions have you create a class that implements JbiValidator and provide implementation for the method vetoableChange, from which you typically call validateValue. The adf guide's example has the custom validation rule class that extends AbstractValidator and implements JboValidatorInterface. In this example, you provide implementation for the validate method. What's the difference between these two approaches and when should I use one over the other? Thanks.

Jbo Custom Validation

Is it possible to create a custom validation bean and assign it at the entity level? Currently, I have only been able to assign a custom validation bean to an attribute of an entity and have it work correctly.

Ok, is there anyone else doing anything remotely like I am attempting to do? Or this is another case of it is not supported?

HOWTO - ADF/UIX validation rules localized ?

Hi.
We are developing an application using ADF/STRUTS/UIX with JDev 9052.
We need to implement some resusable validation rules, to do this we are using the same method that we see on Steve Muench bloc "Creating a Reusable Date Range Validation Rule".
The validation works fine, but we need to localize the error message. We know that the class oracle.jbo.ValidationException have a method to throws localized errors but we don't know how to use this, can anyone help us or give a example ?
Thanks.
Eliseu Cartaxo
http://www.meitner.pt

Hi -
Localize the message strings using Java List Resource Bundle architecture. It's explained in general in this whitepaper -> http://www.oracle.com/technology/products/jdev/collateral/papers/10g/jdev10g_multilingual.pdf
If you're reviewing the Toystore app, have a look at the custom validation rule "Country_Rule_0" in the Account entity object and its resource bundle "AccountImplMsgBundle.java" (and localized versions AccountImplMsgBundle_it.java and AccountImplMsgBundle_de.java)
Hope this helps get you started...

Passing values to the Validation Rule error message

Hello
Help me please
I have the following inquiry :
I am using JDeveloper 10.1.3
I am working on ADF and JSF environment
I have entity object called "Invoices"
and I have the following business rule
" Total purchases from any supplier should not exceed 5000 $ per month "
I am using a validation query to check for the purchases from
specific supplier and validate the Amount.
and I want the message for this validation rule to be :
" Total purchases for this supplier is X , you cannot purchase more than 5000 $ "
where X is variable depending on the supplier ?
I used to do this in Oracle Forms and PL-SQL
I want to generate messages like :
Total purchases for this supplier is 6500 , you cannot purchase more than 5000 $
Total purchases for this supplier is 5250 , you cannot purchase more than 5000 $
???

I think I have to make a custom rule bean
see "Implementing Custom Validation Rules"
http://www.oracle.com/webapps/online-help/jdeveloper/10.1.3/state/content/navId.4/navSetId._/vtAnchor.sm0477/vtTopicFile.bcadfdevguide%7Cbcadveo~htm/

Custom Validator Types in BC4J

HI,
I am having a few problems implementing a custom validator type. Through following the documentation, I have created a new type via the registered rules tabs attached to my business components project. The created class extends oracle.jbo.server.rules.JboCompare Validator.
Once registered, the class appears in the validation tab of the edit Entity wizard as expected.
However, when I try to enforce a validation rule based on the created bean, I get the following :
Cannot create an instance of the validation rule bean or editor.
Validation rule class may not be in classpath.
Exception oracle.jbo.dt.object.JboException(ClassNotFoundException)
The class created is definately in the classpath for my project. I have also tried creating the class inititally, and then adding the class to the registered rules, as opposed to creating a new class via registered rules.
Is this a bug, or have I missed something?
Thanks,
DB
null

Sorry for the delay in response on this -- it took me some time to track down the problem.
When you create a customer validator, the class is added to your current project. However, the IDE doesn't include the myclasses directory as part of it's class path.
The workaround is to edit the [JDeveloper_home]\bin\jdeveloper.ini, and add your current projects class output path to the IDEClassPath (e.g. IDEClassPath=..\lib\jdeveloper_intl.zip;...;..\myclasses)
Thanks for the info. I have logged this as a bug, so hopefully we can resolve it in a future release.
-- Brian

Problem with custom validated data types using domain on 11g

Hi,
I ' m on a migration process from 10 to 11 and I notice that a custom domain didn't work correctly anymore
to be more specific every time that I was submiting a page a was getting an error cannot convert from myclass to oracle.jbo.domain.String
I search the forum and I saw a similar problem
Cannot convert type class java.lang.String to class oracle.jbo.domain.Clob
at which Frank says that it is a known bug and suggests a work around.
I use the workaround and it worked but some more issues came up:
1. If the validation fails I get the error that I throw at the validate method not in a popup with just my message
but in the whole window with the whole error stack, meaning that my custom validation is not handled like native ADF validation errors by
the framework (at 10.1.3.4 worked OK)
2 If i dont give a value at the attribute in the validation phase mdata variable is not null but is length is zero (at 10.1.3.4 its value was null)
public class AFM implements DomainInterface, Serializable {
public AFM(String val) {
mData = new String(val);
validate();
private String mData;
protected void validate() {
// ### Implement custom domain validation logic here. ###
mData==null // returns false
mData.length()==0 // returns true
3. Can i force validation only for new or updated values? I saw that the validation process is taking place every time a row is fetched.
This is not only a performance issue, the bigger problem is that if a fetched from the DB value fails the validation an error is return but the
user cannot change the value to correct it.
TIA
Tilemahos

since i don't get any answer I wonder if i should have use a more provocative title like
"custom domains in 11g don't work"
is it true?
Tilemahos

How can I use database constraints in entity attribute validation rules

I am interested in using database constraints to validate attributes in entity objects.
I would like to implement a JboValidatorInterface in a way that I can use an operator like "GreaterOrEqualTo" to compare with values retrieved from the database for a column associated with an entity object attribute.
I have used this pattern with success in other environments, where the user community decides the minimum value for a thing should change from x to y, and simply changing a database object also changes the validation methods of all applications which access it.
I am not certain that column constraints are the appropriate vehicle, but so far that seems to be the case.
I see that you can create a validation rule which makes comparisons against a view object attribute. I am wondering if there is a generic way to use standardized names for column constraints along with ADF hooks into properties of database columns, to avoid writing individual queries for each attribute.
Thanks in advance!!!

Jeffrey,
If you already have constraints on the underlying tables, why do you need to validate them in ADF BC? You can certainly use some framework extension classes to give the user nicely formatted error messages - see ER: ADF BC - allow custom error msgs for common exceptions (e.g. DML) for more details.
I am using this method so that anything that is enforced in the database (check constraints, foreign keys, unique constraints, etc) are not enforced in the ADF BC layer as well - after all, there's more than one way to get data into a table, and DB constraints ensure that even if data gets in through another mechanism (apart from the ADF application), it is valid. My 2 cents, of course.
Hope this helps,
John

Validation rule for/against intercompany reporting

Hi,
I need a validation rule which checks that a cons unit does not report intercompany against itself.
Validation should be on individual data records.
Have checked various options, no success so far.
Have you got any hints? thx, Clemens

The only standard validation I can imagine for this is to include each cons unit as a check to ensure the same value is not used for trading partner. This will be an expensive validation is there are many cons units.
Another idea is to use a custom task with code to check this.
Another idea is to include a check for this in the update rules as part of the initial data extraction (if using load from data stream).

How can I use ViewObject in Reusable Validation Rule ?

I read chapter 9.6.1 of ADF Developer Guide 4GL, "Creating View Objects at Runtime for Validation". In our system there is a validation that can use ViewObject, e.g :
SUM of outstanding AR cannot exceed the Credit Limit of the Customer.
This rule must be applied to more than one entity :
- During Order data entries
- During Invoice Creation
- ..and some more..
So I think about create a Reusable Validation Rule
(Like Steve recommends on : http://radio.weblogs.com/0118231/stories/2005/07/21/recommendedValidationStrategies.html. => DateRangeRule.Java )
And within this Reusable Validation Rule, I use View Object to do SQL based validation as explained on chapter 9.6.1 above.
How can I do that ?
Thank you for your help,
xtanto

The ADF Toy Store Demo 10.1.2 version contains a reusable rule that uses view objects. If you google for "ADF Toy Store Demo 10.1.2" you will find it. Its a validation rule in the FwkExtensions project in that demo that validates state abbreviations for a country code.

Assigning Validation Rules to a Condition for Order Line entity

Hi,
Do we have any API(or interface) to load some validation rule( rule like 'Inventory Item= some item numbers) to a condition for Order line entity. (i.e. to load records into OE_DEF_CONDN_ELEMS).
Please let me know, thanks in advance

I am not sure of the purpose, if this to enforce a processing constraint, I will use API in the validation template defitniion and in the API I will qualify the items.
You can have these items setup in value set of a look up (custom) and then have user interface control on the same.
Is that what you are looking for?
Thanks
Nagamohan

Validation Rules

Hi,
I need to develop component, which can perform Validations at Objects.
External components will call it and pass it the following data:
* The object to validate
* The name of the validation rule to execute
And then my component will perform validation (on that object) through the specified validation rule.
Rule is a logical set of operations, which checks that a given data complies with specific restrictions. For example rule MinMax should check that given number is within defined range.
Rules can be anything: MinMax (for integers), StringLength, ValidMailAddress and so on.
I want my component to come with some out-of-the-box rules and I want to give the developers a good way to add rules.
Before I develop that I need to know if there is an existing tool, which provides all that (more or less).
I searched the Internet and I found only Jakarta's Validator.
Do you know some other tools?
Thanks,
T.

I want my component to come with some out-of-the-box
rules and I want to give the developers a good way to
add rules.When I saw this, I instantly thought of the W3C XML schema (Actually it's the W3C XML schema schema but I didn't go to school here.)
It has validation for all the 'normal' types you can think of and allows for custom rules using a rich set of tools (including regex.)
The (possible) downside is that you must at some point represent your data in an XML tree.

How to ImplementCross validation rules in OA Page

I have created a custom page which has a Key flex field.How do i implement the cross validation rules?Please let me know.Thanks in advance

For example,
I shouldn't be able to enter Advertisement(say 022)
for administration Balancing segment.
It has to be restricted.So, is there any special logic that i have to implement.
In GL we have a check box for validation rules.Please let me know if the same is possible through OA Page.
Thanks

Validation Rules problems

Hello.
I've got some strange results for Validation Rules (business rules):
1. When i ran this rule it didn't sum up account that was defined via dimension logic formula. It summed up base member accounts and parents account but didn't sum up accounts defined via dimension logic formula. Had anyone the same problem? Is it ok or not?
2. When the number of account_r or account_l are different i receive error when validating rules: "Record ( Seq = 4 ): Field ACCOUNT_R value cannot be blank " and "Record ( Seq = 4 ): Field SUBTABLES_R value cannot be blank". Is it ok or not? As far as i know it works in BPC for MS.
Please, help to clarify what is right and wrong.

There are already some threads on this topic.
Unfortunately, they don't give solutions - not yet ;)
Custom Method Validator
addVetoableChangeListener for attribute doesn't seem to get fired
HTH,
Adrian

Jbo Custom Validation Rules

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