Created
July 23, 2020 18:05
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| import java.lang.reflect.Field; | |
| import java.lang.reflect.InvocationTargetException; | |
| import java.lang.reflect.Modifier; | |
| import java.util.Date; | |
| public class ModelHelper { | |
| public static <T> T merge(T local, T remote) | |
| throws IllegalAccessException, InstantiationException, NoSuchMethodException, InvocationTargetException { | |
| Class<?> clazz = local.getClass(); | |
| Object merged = clazz.getConstructor().newInstance(); | |
| for (Field field : clazz.getDeclaredFields()) { | |
| field.setAccessible(true); | |
| Object localValue = field.get(local); | |
| Object remoteValue = field.get(remote); | |
| if (!Modifier.isFinal(field.getModifiers())) { | |
| if (localValue != null) { | |
| field.set(merged, (remoteValue != null) ? remoteValue : localValue); | |
| } else if (remoteValue != null) { | |
| field.set(merged, remoteValue); | |
| } | |
| } | |
| } | |
| //noinspection unchecked | |
| return (T) merged; | |
| } | |
| public static <T> T mock(Class<T> clazz) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException { | |
| T object = clazz.getConstructor().newInstance(); | |
| for (Field field : clazz.getDeclaredFields()) { | |
| field.setAccessible(true); | |
| if (field.getType().isAssignableFrom(String.class)) { | |
| field.set(object, field.getName()); | |
| } else if (field.getType().isAssignableFrom(Double.class)) { | |
| field.set(object, 0.0); | |
| } else if (field.getType().isAssignableFrom(Integer.class)) { | |
| field.set(object, 0); | |
| } else if (field.getType().isAssignableFrom(Long.class)) { | |
| field.set(object, 0L); | |
| } else if (field.getType().isAssignableFrom(Date.class)) { | |
| field.set(object, new Date()); | |
| } else if (field.getType().isAssignableFrom(Boolean.class)) { | |
| field.set(object, Boolean.TRUE); | |
| } else if (field.getType().isAssignableFrom(Float.class)) { | |
| field.set(object, 0f); | |
| } else { | |
| field.set(object, mock(field.getType())); | |
| } | |
| } | |
| return object; | |
| } | |
| } |
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