net.serenitybdd.screenplay.CopyNonNullProperties Maven / Gradle / Ivy
package net.serenitybdd.screenplay;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import static java.lang.reflect.Modifier.*;
class CopyNonNullProperties {
private Object source;
public CopyNonNullProperties(Object source) {
this.source = source;
}
public static CopyNonNullProperties from(Object task) {
return new CopyNonNullProperties(task);
}
public void to(Object target) {
getFields(source.getClass())
.stream()
.filter(field -> !field.isSynthetic())
.filter(field -> !isStatic(field.getModifiers()))
.forEach(
field -> copyFieldValue(field, source, target)
);
}
public static List getFields(Class clazz) {
List fields = new ArrayList<>();
Class classToInspect = clazz;
while (classToInspect != null) {
fields.addAll(Arrays.asList(classToInspect.getDeclaredFields()));
classToInspect = classToInspect.getSuperclass();
}
return fields;
}
private void copyFieldValue(Field field, Object source, Object target) {
try {
field.setAccessible(true);
Object sourceValue = field.get(source);
if (sourceValue != null) {
field.set(target, sourceValue);
}
} catch (IllegalAccessException e) {
throw new IllegalArgumentException(e);
}
}
}