README.md

reflective

Utility classes that use ASM for generating metaclasses as if it were standard java reflection, but without the performance overhead.

nl.sander.reflective.compare.Compare

• universal (deep) compare tool
• compares [apple] to [orange] recursively and shows the diff
• compiles to bytecode version jdk11
• but also handles records, if you run jdk16+
• Can optionally do 'structural comparison' (as opposed to nominal like in the respective types of polymorphism). Let's say you have class Apple with property color and a class Orange, also with property color. Compare provides any method with which you can compare the values disregarding the type that contains them.

nl.sander.reflective.tomap.ToMap

• turn any bean/record into a Map<String, Object>

Now working on capabilities that mimick java.lang.reflect

• not going to create something like setAccessible(true), since that's likely impossible without jdk support, and probably not wanted either
• I do plan to substitute java.lang.reflect.Array, because of it's VERY poor performance
• a read model for methods, fields etc
• invocation capabilities

import com.github.shautvast.reflective.MetaClass;
import com.github.shautvast.reflective.Reflective;

public class Main {
    public static void main(String[] args) {
        Dummy dummy = new Dummy();
        dummy.setName("foo");
        MetaClass metaDummy = Reflective.getMetaClass(dummy.getClass());
        
        metaDummy.getMethod("setName")
                .ifPresent(m -> m.invoke(dummy, "bar"));
        System.out.println(dummy.getName()); // prints "bar"
    }

    public static class Dummy {
        private String name;

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }
}