Accessing AMImpl client interface method in Using expression in ViewObject

In this section, we walk through about accessing an AppModule java method using Groovy expression

Pre-Requisite

JDeveloper 12.1.3

HR Schema

Country Entity & View Object (create Entity/ViewObject and its Java class )

Process

Double click on the AppModuleImpl.java class >> Write a method that return some integer. We are going to call this method from a View Object through Groovy Expression

Expose the method by double Click on the AppModuleImpl.xml >> Click Java >> Click the pencil icon >> Move the method to the selected list >> Click Ok

Now Open a View Object >> Click Attribute >> Click + icon to create new attribute

Input a name and change type to BigInteger as shown below

Select the created field >> Click Details >> Enable expression >> Click the expression icon as shown below

Input the groovy expression as shown below. Click Ok

This expression calls the method in the AppModuleImpl.java and assign it to the column ‘someNumber’

Syntax: ad.object.applicationModule.<MethodName>

Now Click the Source tab of the Country View Object >> Find the View Aattribute name ‘someNumber’ >> Select the element TransientExpression >> After select , a property window appear n the right hand side >> Change the TrustedMode to true in the property window

Click Save All

Test AppModule

Right click the AppModule.xml >> Click Run

Double click on the CountryEOView1 and check the method return value get populated in the column someNumber