ADF Groovy basic notes

Some of the properties of groovy scripting language

- Groovy is a scripting language having java like syntax
- Groovy is executed at run time
-  Can be used in Entity and View objects in attribute validators(Entity Objects),attribute default values( Entity and View),bind variable default values ( View) place holder for error messages (EO validation rules)
- Define script expression validator or Compare validator 
- Error message tokens can be defined for handling validation failures 
- Conditional execution of validatiors are possible 
- Default value of bind variable in view object can be defined using groovy expression 
- Default value of view criteria 
- Default value and optional re-calculation condition for EO
- Value of transient for EO and VO 

Referencing Buisiness components objects in Groovy expression

Top level object is "adf" . Accessible ADF objects throgh groovy are 

- adf.context - Reference to ADFContext 

- adf.object - Equivalent to this operator in java.

- Entity Objects attributes - Reference methods and attributes of EntityImpl class.

- Entity Objects script validator rules - Attributes and method of ViewImpl class.

- View Object attributes 

- Bind Variable in view Object 

- Bind variable in view accessors 

- Transient attributes 

- adf.error 

- adf.userSession 

- adf.currentDate 

- adf.currentDateTime 

- Referencing custom buisiness components methods and attributes 

eg. Sal*12 - annualsalary .

PromotionDate>HireDate 

Method of entity class in validation rule.For validators use source keyword

eg. source.getDefaultSalaryForGrade()

- newValue - Attribute value being set 

-oldValue - current value of attribute being set 

if(Job=’SALESMAN’)

{

 return newValue<source.getMaxSalaryForGrade(Job)

}

Manipulating business component attribute values in a groovy expression

RowSet Objects

-          rowSetAttr.sum(GroovyExpr)

-          rowSetAttr.count(GroovyExpr)

-          rowSetAttr.avg(GroovyExpr)

-          rowSetAttr.min(GroovyExpr)

-          rowSetAttr.max(GroovyExpr)

EmployeesInDept.sum(“Sal+adf.object.getBenefitsValue(Job)”)