Using Application Classes From Java to PeopleCode

You call a Java program from an Application Class the same way you do using any other PeopleCode program, that is, by using one of the existing Java class built-in functions.

Calling an Application Class from a Java program has the following considerations:

• Application Classes must be accessed using the object built-in functions, such as CreateObject, ObjectDoMethod, ObjectGetProperty, and so on.

• You cannot declare a variable of type HR.Package.SomeClass in your Java program. The variable must be of type Object.

• There is no pre-pending the word ‘get’ or ‘set’ for properties. All classes, methods, and properties are passed as strings.

The following is an example of how to call an Application Class from a Java program.

This is the Java program:

package com.peoplesoft.pcode;
import PeopleSoft.PeopleCode.*;

public class foo {

  public foo() {
  }
  public String getString() {

    Object foo = Func.CreateObject("GTP:Foo", new Object[]{});
    return (String)Func.ObjectDoMethod((Peer)foo, "GetString", new Object[]{});
  }
}

The following is the Application Class Foo, in the Application Package Foo:

class Foo
   method GetString() Returns string;
end-class;

method GetString
   /+ Returns String +/
   Return "Hello";
end-method;

The following is the PeopleCode program that starts it all:

Local JavaObject &foo = CreateJavaObject("com.peoplesoft.pcode.foo");
GTP_PARSER.GTP_STR_RESULT = &foo.getString();