Odtnhj

I have the following code in my java program (paraphrased from the actual program):

import java.util.Objects;
import java.util.function.BiPredicate;

class Class1 
 String propertyA;
 boolean propertyANot;
 String propertyB; //Not all members have corresponding negate indicator
 String propertyC;
 String propertyD;
 boolean propertyDNot;
 ....



class Class2 
 String propertyX;
 String propertyY;
 String propertyZ;
 String propertyW;
 ....


public class Main 

 //Fail early without inspecting all properties 
 private BiPredicate<Class1,Class2> matchObjects = (obj1,obj2) -> 

 if(obj1.propertyA != null && obj2.propertyX != null) 
 //property1Not is a boolean indicates negation
 if(obj1.propertyANot && !Objects.equals(obj1.propertyA,obj2.propertyX)) 
 return false;
 
 else if(!obj1.propertyANot && Objects.equals(obj1.propertyA,obj2.propertyX)) 
 return false;
 
 

 if(obj1.propertyB != null && obj2.propertyY != null) 
 if(!Objects.equals(obj1.propertyB,obj2.propertyY)) 
 return false;
 
 
 .... 

 return true;
 ;

As indicated in the comments, I want the matchObjects method to fail as soon as one of the matching conditions fail. Also the input objects don't have one-to-one correspondence to generalize the code in a loop.

I have following question:

What's the best way to rewrite this code using functional programming
concepts of java8?

Having too many if conditions are making me think there is a scope for improvement here.

I also wrote a custom predicate that takes multiple & Optional parameters to generalize the testing of property equivalence in the if conditions.

However this is not helping me to get rid of multiple if conditions.

Please help & thanks in advance.

You can try something like this:

@FunctionalInterface interface TriPredicate<A, B, C> 
 boolean test (A a, B b, C c);


private BiPredicate<Class1, Class2> matchObjects = (obj1, obj2) -> 
 (cond == null ;