[AFP-91] 🎨 Create bean 'fieldCombiner' to copy fields from one class to another (@asegers)

src/main/java/com/afp/ordermanagement/config/BeanConfig.java

+package com.afp.ordermanagement.config;
+
+import com.afp.ordermanagement.model.Manager;
+import com.github.javafaker.Faker;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.lang.reflect.Field;
+import java.util.Arrays;
+
+import static java.util.Objects.isNull;
+
+@Configuration
+public class BeanConfig {
+    @Bean
+    public static Faker faker() {
+        return new Faker();
+    }
+
+    @Bean
+    public static FieldCombiner fieldCombiner() { return new FieldCombiner(); }
+
+    public static class FieldCombiner {
+
+        public Object combine(Object target, Object source, String[] omitFields) {
+            try {
+                for (Field field: Manager.class.getDeclaredFields()) {
+                    String fieldName = field.getName();
+                    field.setAccessible(true);
+                    Object sourceValue = field.get(source);
+                    if (!isNull(sourceValue) && Arrays.binarySearch(omitFields, fieldName) <= 0)
+                        field.set(target, sourceValue);
+                }
+            } catch (Exception ignore) { }
+
+            return target;
+
+        }
+
+        public Object combine(Object target, Object source) {
+          return this.combine(target, source, new String[0]);
+        }
+
+    }
+
+}